@@ -9,70 +9,125 @@
9{-# LANGUAGE GADTs #-}
9{-# LANGUAGE GADTs #-}
10{-# LANGUAGE GeneralizedNewtypeDeriving #-}
10{-# LANGUAGE GeneralizedNewtypeDeriving #-}
11{-# LANGUAGE LambdaCase #-}
11{-# LANGUAGE LambdaCase #-}
12−{-# LANGUAGE MagicHash #-}
13−{-# LANGUAGE MultiParamTypeClasses #-}
14−{-# LANGUAGE MultiWayIf #-}
15{-# LANGUAGE RankNTypes #-}
12{-# LANGUAGE RankNTypes #-}
16−{-# LANGUAGE RecursiveDo #-}
17{-# LANGUAGE RoleAnnotations #-}
13{-# LANGUAGE RoleAnnotations #-}
18{-# LANGUAGE ScopedTypeVariables #-}
14{-# LANGUAGE ScopedTypeVariables #-}
19{-# LANGUAGE TypeFamilies #-}
15{-# LANGUAGE TypeFamilies #-}
20{-# LANGUAGE TypeOperators #-}
16{-# LANGUAGE TypeOperators #-}
21−{-# LANGUAGE UnboxedTuples #-}
22{-# LANGUAGE UndecidableInstances #-}
17{-# LANGUAGE UndecidableInstances #-}
23−module Reflex.Spider.Internal (Spider, SpiderEnv (..), Global, SpiderHost, runSpiderHost, SpiderEventHandle (..), showSubscriberType, showEventType, ComputeM (..), MergeSubscribedParent (..), HasSpiderEnv (..), newSpiderEnv, SpiderPullM (..), SpiderPushM (..), ReadPhase (..)) where
18+{-# LANGUAGE PolyKinds #-}
19+{-# LANGUAGE DeriveFunctor #-}
20+{-# LANGUAGE StandaloneDeriving #-}
21+{-# LANGUAGE InstanceSigs #-}
22+{-# LANGUAGE MultiWayIf #-}
25−import Data.WeakBag (WeakBag, WeakBagTicket)
24+#ifdef USE_REFLEX_OPTIMIZER
26−import qualified Data.WeakBag as WeakBag
25+{-# OPTIONS_GHC -fplugin=Reflex.Optimizer #-}
27−import qualified Reflex.Class as R
26+#endif
28−import qualified Reflex.Host.Class as R
27+{-# OPTIONS_GHC -Wunused-binds #-}
28+-- | This module is the implementation of the 'Spider' 'Reflex' engine. It uses
29+-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
30+module Reflex.Spider.Internal (module Reflex.Spider.Internal) where
32+#if MIN_VERSION_base(4,10,0)
30−import Control.Applicative
33+import Control.Applicative (liftA2)
31import Control.Concurrent
35import Control.Concurrent
32import Control.Exception
36import Control.Exception
33−import Control.Monad hiding (forM, forM_, mapM, mapM_, sequence)
37+import Control.Monad hiding (forM, forM_, mapM, mapM_)
34import Control.Monad.Exception
38import Control.Monad.Exception
35−import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_, sequence)
39+import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_)
40+import Control.Monad.Primitive
36−import Control.Monad.Reader hiding (forM, forM_, mapM, mapM_, sequence)
41+import Control.Monad.Reader.Class
42+import Control.Monad.IO.Class
43+import Control.Monad.ReaderIO
37import Control.Monad.Ref
44import Control.Monad.Ref
38−import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
45+import Control.Monad.Fail (MonadFail)
46+import qualified Control.Monad.Fail as MonadFail
39import Data.Align
47import Data.Align
40−import Data.Dependent.Map (DMap, DSum (..))
49+import Data.Dependent.Map (DMap)
41import qualified Data.Dependent.Map as DMap
50import qualified Data.Dependent.Map as DMap
42−import Data.Foldable
51+import Data.Dependent.Sum (DSum (..))
52+import Data.FastMutableIntMap (FastMutableIntMap, PatchIntMap (..))
53+import qualified Data.FastMutableIntMap as FastMutableIntMap
54+import Data.Foldable hiding (concat, elem, sequence_)
55+import Data.Functor.Constant
43−import Data.Function
56+import Data.Functor.Misc
44−import Data.Functor.Compose
57+import Data.Functor.Product
45import Data.GADT.Compare
58import Data.GADT.Compare
46import Data.IntMap.Strict (IntMap)
59import Data.IntMap.Strict (IntMap)
47import qualified Data.IntMap.Strict as IntMap
60import qualified Data.IntMap.Strict as IntMap
48import Data.IORef
61import Data.IORef
49−import Data.List
62+import Data.Kind (Type)
50−import Data.Maybe
63+import Data.Maybe hiding (mapMaybe)
51−import Data.Monoid ((<>))
64+import Data.Monoid (mempty, (<>))
52−import Data.Some (Some)
65+import Data.Proxy
53−import qualified Data.Some as Some
54import Data.These
66import Data.These
55import Data.Traversable
67import Data.Traversable
56−import System.Mem.Weak
68+import Data.Type.Equality ((:~:)(Refl))
57−
69+import Data.Witherable (Filterable, mapMaybe)
58−import GHC.Base (IO (..))
70+import GHC.Exts hiding (toList)
59import GHC.IORef (IORef (..))
71import GHC.IORef (IORef (..))
60import GHC.Stack
72import GHC.Stack
61−
73+import Reflex.FastWeak
62−import Control.Monad.Primitive
64import System.IO.Unsafe
74import System.IO.Unsafe
75+import System.Mem.Weak
65import Unsafe.Coerce
76import Unsafe.Coerce
78+#ifdef MIN_VERSION_semialign
79+#if MIN_VERSION_these(0,8,0)
80+import Data.These.Combinators (justThese)
82+#if MIN_VERSION_semialign(1,1,0)
83+import Data.Zip (Zip (..))
88+import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
67import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
91import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
68import qualified Data.List.NonEmpty as NonEmpty
92import qualified Data.List.NonEmpty as NonEmpty
69import Data.Tree (Forest, Tree (..), drawForest)
93import Data.Tree (Forest, Tree (..), drawForest)
94+import Data.List (isPrefixOf)
71−-- Note: must come last to silence warnings due to AMP on GHC < 7.10
96+import Data.FastWeakBag (FastWeakBag, FastWeakBagTicket)
72−import Prelude hiding (any, concat, mapM, mapM_, sequence)
97+import qualified Data.FastWeakBag as FastWeakBag
74−type SubscriberList a = WeakBag (Subscriber a)
99+import Data.Reflection
75−type SubscriberListTicket a = WeakBagTicket (Subscriber a)
100+import Data.Some (Some(Some))
101+import Data.Type.Coercion
102+import Data.Profunctor.Unsafe ((#.), (.#))
103+import Data.WeakBag (WeakBag, WeakBagTicket, _weakBag_children)
104+import qualified Data.WeakBag as WeakBag
105+import qualified Reflex.Class
106+import qualified Reflex.Class as R
107+import qualified Reflex.Host.Class
108+import Reflex.NotReady.Class
110+import qualified Data.Patch.DMapWithMove as PatchDMapWithMove
111+import Reflex.PerformEvent.Base (PerformEventT)
113+#ifdef DEBUG_TRACE_EVENTS
114+import qualified Data.ByteString.Char8 as BS8
115+import System.IO (stderr)
116+import Data.List (isPrefixOf)
119+-- TODO stdout might not be the best channel for debug output
120+debugStrLn :: String -> IO ()
121+debugStrLn = putStrLn
123+#ifdef DEBUG_TRACE_EVENTS
124+withStackOneLine :: (BS8.ByteString -> a) -> a
125+withStackOneLine expr = unsafePerformIO $ do
126+ stack <- currentCallStack
127+ return (expr . BS8.pack . unwords . dropInternal . reverse $ stack)
128+ where dropInternal = filterStack "Reflex.Spider.Internal"
77debugPropagate :: Bool
132debugPropagate :: Bool
@@ -81,52 +136,65 @@ debugInvalidateHeight :: Bool
81debugInvalidate :: Bool
136debugInvalidate :: Bool
83#ifdef DEBUG
138#ifdef DEBUG
85#define DEBUG_NODEIDS
139#define DEBUG_NODEIDS
141+#ifdef DEBUG_TRACE_PROPAGATION
87debugPropagate = True
142debugPropagate = True
144+debugPropagate = False
147+#ifdef DEBUG_TRACE_HEIGHT
148+debugInvalidateHeight = True
89debugInvalidateHeight = False
150debugInvalidateHeight = False
153+#ifdef DEBUG_TRACE_INVALIDATION
91debugInvalidate = True
154debugInvalidate = True
156+debugInvalidate = False
93class HasNodeId a where
159class HasNodeId a where
94 getNodeId :: a -> Int
160 getNodeId :: a -> Int
96−instance HasNodeId (Hold p a) where
162+instance HasNodeId (CacheSubscribed x a) where
97− getNodeId = holdNodeId
163+ getNodeId = _cacheSubscribed_nodeId
99−instance HasNodeId (PushSubscribed a b) where
165+instance HasNodeId (FanInt x a) where
100− getNodeId = pushSubscribedNodeId
166+ getNodeId = _fanInt_nodeId
102−instance HasNodeId (SwitchSubscribed a) where
168+instance HasNodeId (Hold x p) where
103− getNodeId = switchSubscribedNodeId
169+ getNodeId = holdNodeId
105−instance HasNodeId (MergeSubscribed a) where
171+instance HasNodeId (SwitchSubscribed x a) where
106− getNodeId = mergeSubscribedNodeId
172+ getNodeId = switchSubscribedNodeId
108−instance HasNodeId (FanSubscribed a) where
174+instance HasNodeId (FanSubscribed x v a) where
109 getNodeId = fanSubscribedNodeId
175 getNodeId = fanSubscribedNodeId
111−instance HasNodeId (CoincidenceSubscribed a) where
177+instance HasNodeId (CoincidenceSubscribed x a) where
112 getNodeId = coincidenceSubscribedNodeId
178 getNodeId = coincidenceSubscribedNodeId
114−instance HasNodeId (RootSubscribed a) where
180+instance HasNodeId (RootSubscribed x a) where
115 getNodeId = rootSubscribedNodeId
181 getNodeId = rootSubscribedNodeId
117−instance HasNodeId (Pull a) where
183+instance HasNodeId (Pull x a) where
118 getNodeId = pullNodeId
184 getNodeId = pullNodeId
120{-# INLINE showNodeId #-}
186{-# INLINE showNodeId #-}
121showNodeId :: HasNodeId a => a -> String
187showNodeId :: HasNodeId a => a -> String
122−showNodeId = ("#"<>) . show . getNodeId
188+showNodeId = showNodeId' . getNodeId
190+showNodeId' :: Int -> String
191+showNodeId' = ("#"<>) . show
126debugPropagate = False
196debugPropagate = False
128debugInvalidateHeight = False
197debugInvalidateHeight = False
130debugInvalidate = False
198debugInvalidate = False
132-- This must be inline, or error messages will cause memory leaks due to retaining the node in question
200-- This must be inline, or error messages will cause memory leaks due to retaining the node in question
@@ -134,6 +202,10 @@ debugInvalidate = False
134showNodeId :: a -> String
202showNodeId :: a -> String
135showNodeId _ = ""
203showNodeId _ = ""
205+{-# INLINE showNodeId' #-}
206+showNodeId' :: Int -> String
139#ifdef DEBUG_NODEIDS
211#ifdef DEBUG_NODEIDS
@@ -143,41 +215,637 @@ nextNodeIdRef = unsafePerformIO $ newIORef 1
144newNodeId :: IO Int
216newNodeId :: IO Int
145newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
217newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
220+--------------------------------------------------------------------------------
222+--------------------------------------------------------------------------------
224+--NB: Once you subscribe to an Event, you must always hold on the the WHOLE EventSubscription you get back
225+-- If you do not retain the subscription, you may be prematurely unsubscribed from the parent event.
226+data EventSubscription x = EventSubscription
227+ { _eventSubscription_unsubscribe :: !(IO ())
228+ , _eventSubscription_subscribed :: {-# UNPACK #-} !(EventSubscribed x)
231+unsubscribe :: EventSubscription x -> IO ()
232+unsubscribe (EventSubscription u _) = u
234+--------------------------------------------------------------------------------
236+--------------------------------------------------------------------------------
238+newtype Event x a = Event { unEvent :: Subscriber x a -> EventM x (EventSubscription x, Maybe a) }
240+{-# INLINE subscribeAndRead #-}
241+subscribeAndRead :: Event x a -> Subscriber x a -> EventM x (EventSubscription x, Maybe a)
242+subscribeAndRead = unEvent
245+"cacheEvent/cacheEvent" forall e. cacheEvent (cacheEvent e) = cacheEvent e
246+"cacheEvent/pushCheap" forall f e. pushCheap f (cacheEvent e) = cacheEvent (pushCheap f e)
247+"hold/cacheEvent" forall f e. hold f (cacheEvent e) = hold f e
250+-- | Construct an 'Event' equivalent to that constructed by 'push', but with no
251+-- caching; if the computation function is very cheap, this is (much) more
252+-- efficient than 'push'
253+{-# INLINE [1] pushCheap #-}
254+pushCheap :: HasSpiderTimeline x => (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
255+pushCheap !f e = Event $ \sub -> do
256+ (subscription, occ) <- subscribeAndRead e $ debugSubscriber' "push" $ sub
257+ { subscriberPropagate = \a -> do
259+ mapM_ (subscriberPropagate sub) mb
261+ occ' <- join <$> mapM f occ
262+ return (subscription, occ')
264+-- | A subscriber that never triggers other 'Event's
265+{-# INLINE terminalSubscriber #-}
266+terminalSubscriber :: (a -> EventM x ()) -> Subscriber x a
267+terminalSubscriber p = Subscriber
268+ { subscriberPropagate = p
269+ , subscriberInvalidateHeight = \_ -> return ()
270+ , subscriberRecalculateHeight = \_ -> return ()
273+-- | Subscribe to an Event only for the duration of one occurrence
274+{-# INLINE subscribeAndReadHead #-}
275+subscribeAndReadHead :: HasSpiderTimeline x => Event x a -> Subscriber x a -> EventM x (EventSubscription x, Maybe a)
276+subscribeAndReadHead e sub = do
277+ subscriptionRef <- liftIO $ newIORef $ error "subscribeAndReadHead: not initialized"
278+ (subscription, occ) <- subscribeAndRead e $ debugSubscriber' "head" $ sub
279+ { subscriberPropagate = \a -> do
280+ liftIO $ unsubscribe =<< readIORef subscriptionRef
281+ subscriberPropagate sub a
283+ liftIO $ case occ of
284+ Nothing -> writeIORef subscriptionRef $! subscription
285+ Just _ -> unsubscribe subscription
286+ return (subscription, occ)
288+--TODO: Make this lazy in its input event
289+headE :: (MonadIO m, Defer (SomeMergeInit x) m, HasSpiderTimeline x) => Event x a -> m (Event x a)
291+ parent <- liftIO $ newIORef $ Just originalE
292+ defer $ SomeMergeInit $ do --TODO: Rename SomeMergeInit appropriately
293+ let clearParent = liftIO $ writeIORef parent Nothing
294+ (_, occ) <- subscribeAndReadHead originalE $ terminalSubscriber $ const clearParent
295+ when (isJust occ) clearParent
296+ return $ Event $ \sub ->
297+ liftIO (readIORef parent) >>= \case
298+ Nothing -> subscribeAndReadNever
299+ Just e -> subscribeAndReadHead e sub
301+data CacheSubscribed x a
302+ = CacheSubscribed { _cacheSubscribed_subscribers :: {-# UNPACK #-} !(FastWeakBag (Subscriber x a))
303+ , _cacheSubscribed_parent :: {-# UNPACK #-} !(EventSubscription x)
304+ , _cacheSubscribed_occurrence :: {-# UNPACK #-} !(IORef (Maybe a))
306+ , _cacheSubscribed_nodeId :: {-# UNPACK #-} !Int
310+nowSpiderEventM :: (HasSpiderTimeline x) => EventM x (R.Event (SpiderTimeline x) ())
314+now :: (MonadIO m, Defer (Some Clear) m, HasSpiderTimeline x
317+ nowOrNot <- liftIO $ newIORef $ Just ()
318+ scheduleClear nowOrNot
319+ return . Event $ \_ -> do
320+ occ <- liftIO . readIORef $ nowOrNot
321+ return ( EventSubscription (return ()) eventSubscribedNow
325+-- | Construct an 'Event' whose value is guaranteed not to be recomputed
328+--TODO: Try a caching strategy where we subscribe directly to the parent when
329+--there's only one subscriber, and then build our own FastWeakBag only when a second
331+{-# NOINLINE [0] cacheEvent #-}
332+cacheEvent :: forall x a. HasSpiderTimeline x => Event x a -> Event x a
334+#ifdef DEBUG_TRACE_EVENTS
335+ withStackOneLine $ \callSite -> Event $
339+ unsafePerformIO $ do
340+ mSubscribedRef :: IORef (FastWeak (CacheSubscribed x a))
341+ <- newIORef emptyFastWeak
342+ pure $ \sub -> {-# SCC "cacheEvent" #-} do
343+#ifdef DEBUG_TRACE_EVENTS
344+ unless (BS8.null callSite) $ liftIO $ BS8.hPutStrLn stderr callSite
346+ subscribedTicket <- liftIO (readIORef mSubscribedRef >>= getFastWeakTicket) >>= \case
347+ Just subscribedTicket -> return subscribedTicket
350+ nodeId <- liftIO newNodeId
352+ subscribers <- liftIO FastWeakBag.empty
353+ occRef <- liftIO $ newIORef Nothing -- This should never be read prior to being set below
355+ (parentSub, occ) <- subscribeAndRead e $ debugSubscriber' ("cacheEvent" <> showNodeId' nodeId) $ Subscriber
357+ (parentSub, occ) <- subscribeAndRead e $ Subscriber
359+ { subscriberPropagate = \a -> do
360+ liftIO $ writeIORef occRef (Just a)
361+ scheduleClear occRef
362+ propagateFast a subscribers
363+ , subscriberInvalidateHeight = FastWeakBag.traverse_ subscribers . invalidateSubscriberHeight
364+ , subscriberRecalculateHeight = FastWeakBag.traverse_ subscribers . recalculateSubscriberHeight
366+ when (isJust occ) $ do
367+ liftIO $ writeIORef occRef occ -- Set the initial value of occRef; we don't need to do this if occ is Nothing
368+ scheduleClear occRef
369+ let !subscribed = CacheSubscribed
370+ { _cacheSubscribed_subscribers = subscribers
371+ , _cacheSubscribed_parent = parentSub
372+ , _cacheSubscribed_occurrence = occRef
374+ , _cacheSubscribed_nodeId = nodeId
377+ subscribedTicket <- liftIO $ mkFastWeakTicket subscribed
378+ liftIO $ writeIORef mSubscribedRef =<< getFastWeakTicketWeak subscribedTicket
379+ return subscribedTicket
380+ liftIO $ cacheSubscription sub mSubscribedRef subscribedTicket
382+cacheSubscription :: Subscriber x a -> IORef (FastWeak (CacheSubscribed x a))
383+ -> FastWeakTicket (CacheSubscribed x a) -> IO (EventSubscription x, Maybe a)
384+cacheSubscription sub mSubscribedRef subscribedTicket = do
385+ subscribed <- getFastWeakTicketValue subscribedTicket
386+ ticket <- FastWeakBag.insert sub $ _cacheSubscribed_subscribers subscribed
387+ occ <- readIORef $ _cacheSubscribed_occurrence subscribed
389+ let parentSub = _cacheSubscribed_parent subscribed
390+ es = EventSubscription
391+ { _eventSubscription_unsubscribe = do
392+ FastWeakBag.remove ticket
394+ isEmpty <- FastWeakBag.isEmpty $ _cacheSubscribed_subscribers subscribed
396+ writeIORef mSubscribedRef emptyFastWeak
397+ unsubscribe parentSub
399+ touch subscribedTicket
400+ , _eventSubscription_subscribed = EventSubscribed
401+ { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed parentSub
402+ , eventSubscribedRetained = toAny subscribedTicket
404+ , eventSubscribedGetParents = return [_eventSubscription_subscribed parentSub]
405+ , eventSubscribedHasOwnHeightRef = False
406+ , eventSubscribedWhoCreated = whoCreatedIORef mSubscribedRef
413+subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x)
414+subscribe e s = fst <$> subscribeAndRead e s
417+wrap :: MonadIO m => (t -> EventSubscribed x) -> (Subscriber x a -> m (WeakBagTicket, t, Maybe a)) -> Subscriber x a -> m (EventSubscription x, Maybe a)
418+wrap tag getSpecificSubscribed sub = do
419+ (sln, subd, occ) <- getSpecificSubscribed sub
421+ return (EventSubscription (WeakBag.remove sln >> touch sln) es, occ)
423+eventRoot :: (GCompare k, HasSpiderTimeline x) => k a -> Root x k -> Event x a
424+eventRoot !k !r = Event $ wrap eventSubscribedRoot $ liftIO . getRootSubscribed k r
426+subscribeAndReadNever :: EventM x (EventSubscription x, Maybe a)
427+subscribeAndReadNever = return (EventSubscription (return ()) eventSubscribedNever, Nothing)
429+eventNever :: Event x a
430+eventNever = Event $ const subscribeAndReadNever
432+eventFan :: (GCompare k, HasSpiderTimeline x) => k a -> Fan x k v -> Event x (v a)
433+eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
435+eventSwitch :: HasSpiderTimeline x => Switch x a -> Event x a
436+eventSwitch !s = Event $ wrap eventSubscribedSwitch $ getSwitchSubscribed s
438+eventCoincidence :: HasSpiderTimeline x => Coincidence x a -> Event x a
439+eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
441+eventHold :: Hold x p -> Event x p
442+eventHold !h = Event $ subscribeHoldEvent h
444+eventDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Event x p
445+eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
447+{-# INLINE subscribeCoincidenceInner #-}
448+subscribeCoincidenceInner :: HasSpiderTimeline x => Event x a -> Height -> CoincidenceSubscribed x a -> EventM x (Maybe a, Height, EventSubscribed x)
449+subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
450+ subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
451+ (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
452+ innerHeight <- liftIO $ getEventSubscribedHeight innerSubd
453+ let height = max innerHeight outerHeight
454+ defer $ SomeResetCoincidence subscription $ if height > outerHeight then Just subscribedUnsafe else Nothing
455+ return (innerOcc, height, innerSubd)
457+--------------------------------------------------------------------------------
459+--------------------------------------------------------------------------------
461+data Subscriber x a = Subscriber
462+ { subscriberPropagate :: !(a -> EventM x ())
463+ , subscriberInvalidateHeight :: !(Height -> IO ())
464+ , subscriberRecalculateHeight :: !(Height -> IO ())
467+newSubscriberHold :: (HasSpiderTimeline x, Patch p) => Hold x p -> IO (Subscriber x p)
468+newSubscriberHold h = return $ Subscriber
469+ { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
470+ , subscriberInvalidateHeight = \_ -> return ()
471+ , subscriberRecalculateHeight = \_ -> return ()
147−{-# NOINLINE unsafeNodeId #-}
474+newSubscriberFan :: forall x k v. (HasSpiderTimeline x, GCompare k) => FanSubscribed x k v -> IO (Subscriber x (DMap k v))
148−unsafeNodeId :: a -> Int
475+newSubscriberFan subscribed = debugSubscriber ("SubscriberFan " <> showNodeId subscribed) $ Subscriber
149−unsafeNodeId a = unsafePerformIO $ do
476+ { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
150− touch a
477+ subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
151− newNodeId
478+ tracePropagate (Proxy :: Proxy x) $ show (DMap.size subs) <> " keys subscribed, " <> show (DMap.size a) <> " keys firing"
479+ liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
480+ scheduleClear $ fanSubscribedOccurrence subscribed
481+ let f _ (Pair v subsubs) = do
482+ propagate v $ _fanSubscribedChildren_list subsubs
483+ return $ Constant ()
484+ _ <- DMap.traverseWithKey f $ DMap.intersectionWithKey (\_ -> Pair) a subs --TODO: Would be nice to have DMap.traverse_
486+ , subscriberInvalidateHeight = \old -> do
487+ subscribers <- readIORef $ fanSubscribedSubscribers subscribed
488+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
489+ , subscriberRecalculateHeight = \new -> do
490+ subscribers <- readIORef $ fanSubscribedSubscribers subscribed
491+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
494+newSubscriberSwitch :: forall x a. HasSpiderTimeline x => SwitchSubscribed x a -> IO (Subscriber x a)
495+newSubscriberSwitch subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
496+ { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
497+ liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
498+ scheduleClear $ switchSubscribedOccurrence subscribed
499+ propagate a $ switchSubscribedSubscribers subscribed
500+ , subscriberInvalidateHeight = \_ -> do
501+ oldHeight <- readIORef $ switchSubscribedHeight subscribed
502+ when (oldHeight /= invalidHeight) $ do
503+ writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
504+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
505+ , subscriberRecalculateHeight = (`updateSwitchHeight` subscribed)
508+newSubscriberCoincidenceOuter :: forall x b. HasSpiderTimeline x => CoincidenceSubscribed x b -> IO (Subscriber x (Event x b))
509+newSubscriberCoincidenceOuter subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
510+ { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
511+ outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
512+ tracePropagate (Proxy :: Proxy x) $ " outerHeight = " <> show outerHeight
513+ (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
514+ tracePropagate (Proxy :: Proxy x) $ " isJust occ = " <> show (isJust occ)
515+ tracePropagate (Proxy :: Proxy x) $ " innerHeight = " <> show innerHeight
517+ liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
518+ scheduleClear $ coincidenceSubscribedInnerParent subscribed
521+ when (innerHeight > outerHeight) $ liftIO $ do -- If the event fires, it will fire at a later height
522+ writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
523+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
524+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
525+ Just o -> do -- Since it's already firing, no need to adjust height
526+ liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
527+ scheduleClear $ coincidenceSubscribedOccurrence subscribed
528+ propagate o $ coincidenceSubscribedSubscribers subscribed
529+ , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
530+ , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
533+newSubscriberCoincidenceInner :: forall x a. HasSpiderTimeline x => CoincidenceSubscribed x a -> IO (Subscriber x a)
534+newSubscriberCoincidenceInner subscribed = debugSubscriber ("SubscriberCoincidenceInner" <> showNodeId subscribed) $ Subscriber
535+ { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
536+ occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
538+ Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
540+ liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
541+ scheduleClear $ coincidenceSubscribedOccurrence subscribed
542+ propagate a $ coincidenceSubscribedSubscribers subscribed
543+ , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
544+ , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
547+invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
548+invalidateSubscriberHeight = flip subscriberInvalidateHeight
550+recalculateSubscriberHeight :: Height -> Subscriber x a -> IO ()
551+recalculateSubscriberHeight = flip subscriberRecalculateHeight
553+-- | Propagate everything at the current height
554+propagate :: forall x a. HasSpiderTimeline x => a -> WeakBag (Subscriber x a) -> EventM x ()
555+propagate a subscribers = withIncreasedDepth (Proxy::Proxy x) $
556+ -- Note: in the following traversal, we do not visit nodes that are added to the list during our traversal; they are new events, which will necessarily have full information already, so there is no need to traverse them
557+ --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
558+ WeakBag.traverse_ subscribers $ \s -> subscriberPropagate s a
560+-- | Propagate everything at the current height
561+propagateFast :: forall x a. HasSpiderTimeline x => a -> FastWeakBag (Subscriber x a) -> EventM x ()
562+propagateFast a subscribers = withIncreasedDepth (Proxy::Proxy x) $
563+ -- Note: in the following traversal, we do not visit nodes that are added to the list during our traversal; they are new events, which will necessarily have full information already, so there is no need to traverse them
564+ --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
565+ FastWeakBag.traverse_ subscribers $ \s -> subscriberPropagate s a
567+--------------------------------------------------------------------------------
569+--------------------------------------------------------------------------------
574+-- Why do we use Any here, instead of just giving eventSubscribedRetained an
575+-- existential type? Sadly, GHC does not currently know how to unbox types
576+-- with existentially quantified fields. So instead we just coerce values
577+-- to type Any on the way in. Since we never coerce them back, this is
579+data EventSubscribed x = EventSubscribed
580+ { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
581+ , eventSubscribedRetained :: {-# NOUNPACK #-} !Any
583+ , eventSubscribedGetParents :: !(IO [EventSubscribed x]) -- For debugging loops
584+ , eventSubscribedHasOwnHeightRef :: !Bool
585+ , eventSubscribedWhoCreated :: !(IO [String])
589+eventSubscribedRoot :: RootSubscribed x a -> EventSubscribed x
590+eventSubscribedRoot !r = EventSubscribed
591+ { eventSubscribedHeightRef = zeroRef
592+ , eventSubscribedRetained = toAny r
594+ , eventSubscribedGetParents = return []
595+ , eventSubscribedHasOwnHeightRef = False
596+ , eventSubscribedWhoCreated = return ["root"]
600+eventSubscribedNever :: EventSubscribed x
601+eventSubscribedNever = EventSubscribed
602+ { eventSubscribedHeightRef = zeroRef
603+ , eventSubscribedRetained = toAny ()
605+ , eventSubscribedGetParents = return []
606+ , eventSubscribedHasOwnHeightRef = False
607+ , eventSubscribedWhoCreated = return ["never"]
610+eventSubscribedNow :: EventSubscribed x
611+eventSubscribedNow = EventSubscribed
612+ { eventSubscribedHeightRef = zeroRef
613+ , eventSubscribedRetained = toAny ()
615+ , eventSubscribedGetParents = return []
616+ , eventSubscribedHasOwnHeightRef = False
617+ , eventSubscribedWhoCreated = return ["now"]
621+eventSubscribedFan :: FanSubscribed x k v -> EventSubscribed x
622+eventSubscribedFan !subscribed = EventSubscribed
623+ { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
624+ , eventSubscribedRetained = toAny subscribed
626+ , eventSubscribedGetParents = return [_eventSubscription_subscribed $ fanSubscribedParent subscribed]
627+ , eventSubscribedHasOwnHeightRef = False
628+ , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
632+eventSubscribedSwitch :: SwitchSubscribed x a -> EventSubscribed x
633+eventSubscribedSwitch !subscribed = EventSubscribed
634+ { eventSubscribedHeightRef = switchSubscribedHeight subscribed
635+ , eventSubscribedRetained = toAny subscribed
637+ , eventSubscribedGetParents = do
638+ s <- readIORef $ switchSubscribedCurrentParent subscribed
639+ return [_eventSubscription_subscribed s]
640+ , eventSubscribedHasOwnHeightRef = True
641+ , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
645+eventSubscribedCoincidence :: CoincidenceSubscribed x a -> EventSubscribed x
646+eventSubscribedCoincidence !subscribed = EventSubscribed
647+ { eventSubscribedHeightRef = coincidenceSubscribedHeight subscribed
648+ , eventSubscribedRetained = toAny subscribed
650+ , eventSubscribedGetParents = do
651+ innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
652+ let outerParent = _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
653+ innerParents = maybeToList $ innerSubscription
654+ return $ outerParent : innerParents
655+ , eventSubscribedHasOwnHeightRef = True
656+ , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
660+getEventSubscribedHeight :: EventSubscribed x -> IO Height
661+getEventSubscribedHeight es = readIORef $ eventSubscribedHeightRef es
664+whoCreatedEventSubscribed :: EventSubscribed x -> IO [String]
665+whoCreatedEventSubscribed = eventSubscribedWhoCreated
667+walkInvalidHeightParents :: EventSubscribed x -> IO [EventSubscribed x]
668+walkInvalidHeightParents s0 = do
669+ subscribers <- flip execStateT mempty $ ($ s0) $ fix $ \loop s -> do
670+ h <- liftIO $ readIORef $ eventSubscribedHeightRef s
671+ when (h == invalidHeight) $ do
672+ when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
674+ mapM_ loop =<< liftIO (eventSubscribedGetParents s)
675+ forM_ subscribers $ \s -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
679+{-# INLINE subscribeHoldEvent #-}
680+subscribeHoldEvent :: Hold x p -> Subscriber x p -> EventM x (EventSubscription x, Maybe p)
681+subscribeHoldEvent = subscribeAndRead . holdEvent
683+--------------------------------------------------------------------------------
685+--------------------------------------------------------------------------------
687+newtype Behavior x a = Behavior { readBehaviorTracked :: BehaviorM x a }
689+behaviorHold :: Hold x p -> Behavior x (PatchTarget p)
690+behaviorHold !h = Behavior $ readHoldTracked h
692+behaviorHoldIdentity :: Hold x (Identity a) -> Behavior x a
693+behaviorHoldIdentity = behaviorHold
695+behaviorConst :: a -> Behavior x a
696+behaviorConst !a = Behavior $ return a
698+behaviorPull :: Pull x a -> Behavior x a
699+behaviorPull !p = Behavior $ do
700+ val <- liftIO $ readIORef $ pullValue p
702+ Just subscribed -> do
703+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
704+ askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
705+ liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
706+ return $ pullSubscribedValue subscribed
708+ i <- liftIO $ newInvalidatorPull p
709+ wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
710+ parentsRef <- liftIO $ newIORef []
711+ holdInits <- askBehaviorHoldInits
712+ a <- liftIO $ runReaderIO (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
713+ invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
714+ parents <- liftIO $ readIORef parentsRef
715+ let subscribed = PullSubscribed
716+ { pullSubscribedValue = a
717+ , pullSubscribedInvalidators = invsRef
718+ , pullSubscribedOwnInvalidator = i
719+ , pullSubscribedParents = parents
721+ liftIO $ writeIORef (pullValue p) $ Just subscribed
722+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
725+behaviorDyn :: Patch p => Dyn x p -> Behavior x (PatchTarget p)
726+behaviorDyn !d = Behavior $ readHoldTracked =<< getDynHold d
728+{-# INLINE readHoldTracked #-}
729+readHoldTracked :: Hold x p -> BehaviorM x (PatchTarget p)
730+readHoldTracked h = do
731+ result <- liftIO $ readIORef $ holdValue h
732+ askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
733+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedHold h)) :))
734+ liftIO $ touch h -- Otherwise, if this gets inlined enough, the hold's parent reference may get collected
737+{-# INLINABLE readBehaviorUntracked #-}
738+readBehaviorUntracked :: Defer (SomeHoldInit x) m => Behavior x a -> m a
739+readBehaviorUntracked b = do
740+ holdInits <- getDeferralQueue
741+ liftIO $ runBehaviorM (readBehaviorTracked b) Nothing holdInits --TODO: Specialize readBehaviorTracked to the Nothing and Just cases
743+--------------------------------------------------------------------------------
745+--------------------------------------------------------------------------------
747+type DynamicS x p = Dynamic x (PatchTarget p) p
749+data Dynamic x target p = Dynamic
750+ { dynamicCurrent :: !(Behavior x target)
751+ , dynamicUpdated :: Event x p -- This must be lazy; see the comment on holdEvent --TODO: Would this let us eliminate `Dyn`?
754+deriving instance (HasSpiderTimeline x) => Functor (Dynamic x target)
759+dynamicHold :: Hold x p -> DynamicS x p
760+dynamicHold !h = Dynamic
761+ { dynamicCurrent = behaviorHold h
762+ , dynamicUpdated = eventHold h
765+dynamicHoldIdentity :: Hold x (Identity a) -> DynamicS x (Identity a)
766+dynamicHoldIdentity = dynamicHold
768+dynamicConst :: PatchTarget p -> DynamicS x p
769+dynamicConst !a = Dynamic
770+ { dynamicCurrent = behaviorConst a
771+ , dynamicUpdated = eventNever
774+dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> DynamicS x p
775+dynamicDyn !d = Dynamic
776+ { dynamicCurrent = behaviorDyn d
777+ , dynamicUpdated = eventDyn d
780+dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> DynamicS x (Identity a)
781+dynamicDynIdentity = dynamicDyn
783+--------------------------------------------------------------------------------
785+--------------------------------------------------------------------------------
154−--TODO: Figure out why certain things are not 'representational', then make them representational so we can use coerce
155--type role Hold representational
787--type role Hold representational
156−data Hold p a
788+data Hold x p
157− = Hold { holdValue :: !(IORef a)
789+ = Hold { holdValue :: !(IORef (PatchTarget p))
158− , holdInvalidators :: !(IORef [Weak Invalidator])
790+ , holdInvalidators :: !(IORef [Weak (Invalidator x)])
791+ , holdEvent :: Event x p -- This must be lazy, or holds cannot be defined before their input Events
159− , holdParent :: !(IORef (Either (Event (p a)) (EventSubscription (p a)))) -- Keeps its parent alive (will be undefined until the hold is initialized) --TODO: Probably shouldn't be an IORef
792+ , holdParent :: !(IORef (Maybe (EventSubscription x))) -- Keeps its parent alive (will be undefined until the hold is initialized) --TODO: Probably shouldn't be an IORef
160#ifdef DEBUG_NODEIDS
793#ifdef DEBUG_NODEIDS
161 , holdNodeId :: Int
794 , holdNodeId :: Int
798+-- | A statically allocated 'SpiderTimeline'
801+{-# NOINLINE globalSpiderTimelineEnv #-}
802+globalSpiderTimelineEnv :: SpiderTimelineEnv Global
803+globalSpiderTimelineEnv = unsafePerformIO unsafeNewSpiderTimelineEnv
805+-- | Stores all global data relevant to a particular Spider timeline; only one
806+-- value should exist for each type @x@
807+newtype SpiderTimelineEnv x = STE {unSTE :: SpiderTimelineEnv' x}
808+-- We implement SpiderTimelineEnv with a newtype wrapper so
809+-- we can get the coercions we want safely.
810+type role SpiderTimelineEnv nominal
812+data SpiderTimelineEnv' x = SpiderTimelineEnv
813+ { _spiderTimeline_lock :: {-# UNPACK #-} !(MVar ())
814+ , _spiderTimeline_eventEnv :: {-# UNPACK #-} !(EventEnv x)
816+ , _spiderTimeline_depth :: {-# UNPACK #-} !(IORef Int)
819+type role SpiderTimelineEnv' phantom
821+instance Eq (SpiderTimelineEnv x) where
822+ _ == _ = True -- Since only one exists of each type
824+instance GEq SpiderTimelineEnv where
825+ a `geq` b = if _spiderTimeline_lock (unSTE a) == _spiderTimeline_lock (unSTE b)
826+ then Just $ unsafeCoerce Refl -- This unsafeCoerce is safe because the same SpiderTimelineEnv can't have two different 'x' arguments
165data EventEnv x
829data EventEnv x
166− = EventEnv { eventEnvSpiderEnv :: !(SpiderEnv x)
167− , eventEnvAssignments :: !(IORef [SomeAssignment]) -- Needed for Subscribe
830+ = EventEnv { eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
168− , eventEnvHoldInits :: !(IORef [SomeHoldInit]) -- Needed for Subscribe
831+ , eventEnvHoldInits :: !(IORef [SomeHoldInit x]) -- Needed for Subscribe
832+ , eventEnvDynInits :: !(IORef [SomeDynInit x])
169− , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate])
833+ , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
170− , eventEnvMergeInits :: !(IORef [SomeMergeInit]) -- Needed for Subscribe
834+ , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
171− , eventEnvClears :: !(IORef [SomeClear]) -- Needed for Subscribe
835+ , eventEnvClears :: !(IORef [Some Clear]) -- Needed for Subscribe
836+ , eventEnvIntClears :: !(IORef [Some IntClear])
172− , eventEnvRootClears :: !(IORef [SomeRootClear])
837+ , eventEnvRootClears :: !(IORef [Some RootClear])
173 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
838 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
174− , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence]) -- Needed for Subscribe
839+ , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
175− , eventEnvDelayedMerges :: !(IORef (IntMap [DelayedMerge]))
840+ , eventEnvDelayedMerges :: !(IORef (IntMap [EventM x ()]))
178{-# INLINE runEventM #-}
843{-# INLINE runEventM #-}
179−runEventM :: EventM x a -> EventEnv x -> IO a
844+runEventM :: EventM x a -> IO a
180−runEventM = runReaderT . unEventM
845+runEventM = unEventM
847+asksEventEnv :: forall x a. HasSpiderTimeline x => (EventEnv x -> a) -> EventM x a
848+asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (unSTE (spiderTimeline :: SpiderTimelineEnv x))
182class MonadIO m => Defer a m where
850class MonadIO m => Defer a m where
183 getDeferralQueue :: m (IORef [a])
851 getDeferralQueue :: m (IORef [a])
@@ -188,90 +856,98 @@ defer a = do
188 q <- getDeferralQueue
856 q <- getDeferralQueue
189 liftIO $ modifyIORef' q (a:)
857 liftIO $ modifyIORef' q (a:)
191−instance Defer SomeAssignment (EventM x) where
859+instance HasSpiderTimeline x => Defer (SomeAssignment x) (EventM x) where
860+ {-# INLINE getDeferralQueue #-}
861+ getDeferralQueue = asksEventEnv eventEnvAssignments
863+instance HasSpiderTimeline x => Defer (SomeHoldInit x) (EventM x) where
192 {-# INLINE getDeferralQueue #-}
864 {-# INLINE getDeferralQueue #-}
193− getDeferralQueue = EventM $ asks eventEnvAssignments
865+ getDeferralQueue = asksEventEnv eventEnvHoldInits
195−instance Defer SomeHoldInit (EventM x) where
867+instance HasSpiderTimeline x => Defer (SomeDynInit x) (EventM x) where
196 {-# INLINE getDeferralQueue #-}
868 {-# INLINE getDeferralQueue #-}
197− getDeferralQueue = EventM $ asks eventEnvHoldInits
869+ getDeferralQueue = asksEventEnv eventEnvDynInits
199−instance Defer SomeHoldInit BehaviorM where
871+instance Defer (SomeHoldInit x) (BehaviorM x) where
200 {-# INLINE getDeferralQueue #-}
872 {-# INLINE getDeferralQueue #-}
201 getDeferralQueue = BehaviorM $ asks snd
873 getDeferralQueue = BehaviorM $ asks snd
203−instance Defer SomeMergeUpdate (EventM x) where
875+instance HasSpiderTimeline x => Defer (SomeMergeUpdate x) (EventM x) where
204 {-# INLINE getDeferralQueue #-}
876 {-# INLINE getDeferralQueue #-}
205− getDeferralQueue = EventM $ asks eventEnvMergeUpdates
877+ getDeferralQueue = asksEventEnv eventEnvMergeUpdates
207−instance Defer SomeMergeInit (EventM x) where
879+instance HasSpiderTimeline x => Defer (SomeMergeInit x) (EventM x) where
208 {-# INLINE getDeferralQueue #-}
880 {-# INLINE getDeferralQueue #-}
209− getDeferralQueue = EventM $ asks eventEnvMergeInits
881+ getDeferralQueue = asksEventEnv eventEnvMergeInits
211−class HasCurrentHeight m where
883+class HasSpiderTimeline x => HasCurrentHeight x m | m -> x where
212 getCurrentHeight :: m Height
884 getCurrentHeight :: m Height
213− scheduleMerge :: Height -> MergeSubscribed a -> m ()
885+ scheduleMerge :: Height -> EventM x () -> m ()
215−instance HasCurrentHeight (EventM x) where
887+instance HasSpiderTimeline x => HasCurrentHeight x (EventM x) where
216 {-# INLINE getCurrentHeight #-}
888 {-# INLINE getCurrentHeight #-}
217− getCurrentHeight = EventM $ do
889+ getCurrentHeight = do
218− heightRef <- asks eventEnvCurrentHeight
890+ heightRef <- asksEventEnv eventEnvCurrentHeight
219 liftIO $ readIORef heightRef
891 liftIO $ readIORef heightRef
220 {-# INLINE scheduleMerge #-}
892 {-# INLINE scheduleMerge #-}
221− scheduleMerge height subscribed = EventM $ do
893+ scheduleMerge height subscribed = do
222− delayedRef <- asks eventEnvDelayedMerges
894+ delayedRef <- asksEventEnv eventEnvDelayedMerges
223− liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [DelayedMerge subscribed]
895+ liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [subscribed]
225−class HasSpiderEnv x m | m -> x where
226− askSpiderEnv :: m (SpiderEnv x)
228−instance HasSpiderEnv x (EventM x) where
897+class HasSpiderTimeline x where
229− {-# INLINE askSpiderEnv #-}
898+ -- | Retrieve the current SpiderTimelineEnv
230− askSpiderEnv = EventM $ asks eventEnvSpiderEnv
899+ spiderTimeline :: SpiderTimelineEnv x
232−instance HasSpiderEnv x (SpiderHost x) where
901+instance HasSpiderTimeline Global where
233− {-# INLINE askSpiderEnv #-}
902+ spiderTimeline = globalSpiderTimelineEnv
234− askSpiderEnv = SpiderHost ask
236−putCurrentHeight :: Height -> EventM x ()
904+putCurrentHeight :: HasSpiderTimeline x => Height -> EventM x ()
237−putCurrentHeight h = EventM $ do
905+putCurrentHeight h = do
238− heightRef <- asks eventEnvCurrentHeight
906+ heightRef <- asksEventEnv eventEnvCurrentHeight
239 liftIO $ writeIORef heightRef $! h
907 liftIO $ writeIORef heightRef $! h
241−instance Defer SomeClear (EventM x) where
909+instance HasSpiderTimeline x => Defer (Some Clear) (EventM x) where
242 {-# INLINE getDeferralQueue #-}
910 {-# INLINE getDeferralQueue #-}
243− getDeferralQueue = EventM $ asks eventEnvClears
911+ getDeferralQueue = asksEventEnv eventEnvClears
245{-# INLINE scheduleClear #-}
913{-# INLINE scheduleClear #-}
246−scheduleClear :: Defer SomeClear m => IORef (Maybe a) -> m ()
914+scheduleClear :: Defer (Some Clear) m => IORef (Maybe a) -> m ()
247−scheduleClear r = defer $ SomeClear r
915+scheduleClear r = defer $ Some $ Clear r
249−instance Defer SomeRootClear (EventM x) where
917+instance HasSpiderTimeline x => Defer (Some IntClear) (EventM x) where
250 {-# INLINE getDeferralQueue #-}
918 {-# INLINE getDeferralQueue #-}
919+ getDeferralQueue = asksEventEnv eventEnvIntClears
921+{-# INLINE scheduleIntClear #-}
922+scheduleIntClear :: Defer (Some IntClear) m => IORef (IntMap a) -> m ()
923+scheduleIntClear r = defer $ Some $ IntClear r
925+instance HasSpiderTimeline x => Defer (Some RootClear) (EventM x) where
926+ {-# INLINE getDeferralQueue #-}
251− getDeferralQueue = EventM $ asks eventEnvRootClears
927+ getDeferralQueue = asksEventEnv eventEnvRootClears
253{-# INLINE scheduleRootClear #-}
929{-# INLINE scheduleRootClear #-}
254−scheduleRootClear :: Defer SomeRootClear m => IORef (DMap k Identity) -> m ()
930+scheduleRootClear :: Defer (Some RootClear) m => IORef (DMap k Identity) -> m ()
255−scheduleRootClear r = defer $ SomeRootClear r
931+scheduleRootClear r = defer $ Some $ RootClear r
257−instance Defer SomeResetCoincidence (EventM x) where
933+instance HasSpiderTimeline x => Defer (SomeResetCoincidence x) (EventM x) where
258 {-# INLINE getDeferralQueue #-}
934 {-# INLINE getDeferralQueue #-}
259− getDeferralQueue = EventM $ asks eventEnvResetCoincidences
935+ getDeferralQueue = asksEventEnv eventEnvResetCoincidences
261-- Note: hold cannot examine its event until after the phase is over
937-- Note: hold cannot examine its event until after the phase is over
262−{-# SPECIALIZE hold :: R.Patch p => a -> Event (p a) -> EventM x (Hold p a) #-}
938+{-# INLINE [1] hold #-}
263−{-# SPECIALIZE hold :: R.Patch p => a -> Event (p a) -> ComputeM (Hold p a) #-}
264−hold :: (R.Patch p, Defer SomeHoldInit m) => a -> Event (p a) -> m (Hold p a)
939+hold :: (Patch p, Defer (SomeHoldInit x) m) => PatchTarget p -> Event x p -> m (Hold x p)
265hold v0 e = do
940hold v0 e = do
266 valRef <- liftIO $ newIORef v0
941 valRef <- liftIO $ newIORef v0
267 invsRef <- liftIO $ newIORef []
942 invsRef <- liftIO $ newIORef []
268− parentRef <- liftIO $ newIORef $ Left e
943+ parentRef <- liftIO $ newIORef Nothing
269#ifdef DEBUG_NODEIDS
944#ifdef DEBUG_NODEIDS
270 nodeId <- liftIO newNodeId
945 nodeId <- liftIO newNodeId
272 let h = Hold
947 let h = Hold
273 { holdValue = valRef
948 { holdValue = valRef
274 , holdInvalidators = invsRef
949 , holdInvalidators = invsRef
275 , holdParent = parentRef
951 , holdParent = parentRef
276#ifdef DEBUG_NODEIDS
952#ifdef DEBUG_NODEIDS
277 , holdNodeId = nodeId
953 , holdNodeId = nodeId
@@ -280,155 +956,115 @@ hold v0 e = do
280 defer $ SomeHoldInit h
956 defer $ SomeHoldInit h
284−mkWeakIORefKey :: IORef a -> b -> IO () -> IO (Weak b)
285−mkWeakIORefKey r@(IORef (STRef r#)) b (IO f) = IO $ \s ->
286− case mkWeak# r# b f s of (# s1, w #) -> (# s1, Weak w #)
289{-# INLINE getHoldEventSubscription #-}
959{-# INLINE getHoldEventSubscription #-}
290−getHoldEventSubscription :: forall m p a x. (Defer SomeAssignment m, Defer SomeHoldInit m, Defer SomeClear m, R.Patch p, HasCurrentHeight m, Defer SomeMergeInit m, Defer SomeResetCoincidence m, HasSpiderEnv x m) => Hold p a -> m (EventSubscription (p a))
960+getHoldEventSubscription :: forall p x. (HasSpiderTimeline x, Patch p) => Hold x p -> EventM x (EventSubscription x)
291getHoldEventSubscription h = do
961getHoldEventSubscription h = do
292 ep <- liftIO $ readIORef $ holdParent h
962 ep <- liftIO $ readIORef $ holdParent h
293 case ep of
963 case ep of
294− Right subd -> return subd
964+ Just subd -> return subd
295− Left e -> do
965+ Nothing -> do
296 subscriptionRef <- liftIO $ newIORef $ error "getHoldEventSubscription: subdRef uninitialized"
967 subscriptionRef <- liftIO $ newIORef $ error "getHoldEventSubscription: subdRef uninitialized"
298− spiderEnv <- askSpiderEnv
299− weakSubscriptionRef <- liftIO $ mkWeakIORef subscriptionRef $ return ()
300− wh <- liftIO $ mkWeakIORefKey (holdValue h) h $ do
301− msr <- deRefWeak weakSubscriptionRef
302− forM_ msr $ \sr -> do
303− subscription <- readIORef sr
304− atomicModifyIORef (_spiderEnv_toUnsubscribe spiderEnv) $ \x -> (SomeEventSubscription subscription : x, ())
307− -- What can we do? 1) Detect GCs at the SpiderEnv level, then go over the tree
308− 2) Have a finalizer on every SubscriberListNode that only runs if its parent is still alive, and does a normal unsubscribe if so; this would seem to double the number of weakRefs we use, but perhaps not the weakDepth, so maybe it's OK; we will probably need to move the regular call to unsubscribe into the finalizer and then use finalize instead of that call; we can have a strong reference to the SubscriberListNode, which means we just need a single weak reference to each EventSubscribed, which we can reuse in all of the finalizers that need to (potentially) unsubscribe from it
311− subscription@(EventSubscription _ subd) <- subscribe e =<< liftIO (newSubscriberHold h)
968+ (subscription@(EventSubscription _ _), occ) <- subscribeAndRead e =<< liftIO (newSubscriberHold h)
312 liftIO $ writeIORef subscriptionRef $! subscription
969 liftIO $ writeIORef subscriptionRef $! subscription
313− occ <- liftIO $ readEventSubscribed subd
314 case occ of
970 case occ of
315 Nothing -> return ()
971 Nothing -> return ()
316 Just o -> do
972 Just o -> do
317 old <- liftIO $ readIORef $ holdValue h
973 old <- liftIO $ readIORef $ holdValue h
318− case R.apply o old of
974+ case apply o old of
319 Nothing -> return ()
975 Nothing -> return ()
320 Just new -> do
976 Just new -> do
321 -- Need to evaluate these so that we don't retain the Hold itself
977 -- Need to evaluate these so that we don't retain the Hold itself
322 v <- liftIO $ evaluate $ holdValue h
978 v <- liftIO $ evaluate $ holdValue h
323 i <- liftIO $ evaluate $ holdInvalidators h
979 i <- liftIO $ evaluate $ holdInvalidators h
324 defer $ SomeAssignment v i new
980 defer $ SomeAssignment v i new
325− liftIO $ writeIORef (holdParent h) $! Right subscription
981+ liftIO $ writeIORef (holdParent h) $ Just subscription
326 return subscription
982 return subscription
328−type BehaviorEnv = (Maybe (Weak Invalidator, IORef [SomeBehaviorSubscribed]), IORef [SomeHoldInit])
984+type BehaviorEnv x = (Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]), IORef [SomeHoldInit x])
330−--type role BehaviorM representational
331-- BehaviorM can sample behaviors
986-- BehaviorM can sample behaviors
332−newtype BehaviorM a = BehaviorM { unBehaviorM :: ReaderT BehaviorEnv IO a } deriving (Functor, Applicative, MonadIO, MonadFix)
987+newtype BehaviorM x a = BehaviorM { unBehaviorM :: ReaderIO (BehaviorEnv x) a }
988+ deriving (Functor, Applicative, MonadIO, MonadFix, MonadReader (BehaviorEnv x))
334−instance Monad BehaviorM where
990+instance Monad (BehaviorM x) where
335 {-# INLINE (>>=) #-}
991 {-# INLINE (>>=) #-}
336 BehaviorM x >>= f = BehaviorM $ x >>= unBehaviorM . f
992 BehaviorM x >>= f = BehaviorM $ x >>= unBehaviorM . f
337 {-# INLINE (>>) #-}
993 {-# INLINE (>>) #-}
338 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
994 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
339 {-# INLINE return #-}
995 {-# INLINE return #-}
340 return x = BehaviorM $ return x
996 return x = BehaviorM $ return x
997+#if !MIN_VERSION_base(4,13,0)
341 {-# INLINE fail #-}
998 {-# INLINE fail #-}
342 fail s = BehaviorM $ fail s
999 fail s = BehaviorM $ fail s
344−data BehaviorSubscribed a
1002+data BehaviorSubscribed x a
345− = forall p. BehaviorSubscribedHold (Hold p a)
1003+ = forall p. BehaviorSubscribedHold (Hold x p)
346− | BehaviorSubscribedPull (PullSubscribed a)
1004+ | BehaviorSubscribedPull (PullSubscribed x a)
348−data SomeBehaviorSubscribed = forall a. SomeBehaviorSubscribed (BehaviorSubscribed a)
1006+newtype SomeBehaviorSubscribed x = SomeBehaviorSubscribed (Some (BehaviorSubscribed x))
350--type role PullSubscribed representational
1008--type role PullSubscribed representational
351−data PullSubscribed a
1009+data PullSubscribed x a
352 = PullSubscribed { pullSubscribedValue :: !a
1010 = PullSubscribed { pullSubscribedValue :: !a
353− , pullSubscribedInvalidators :: !(IORef [Weak Invalidator])
1011+ , pullSubscribedInvalidators :: !(IORef [Weak (Invalidator x)])
354− , pullSubscribedOwnInvalidator :: !Invalidator
1012+ , pullSubscribedOwnInvalidator :: !(Invalidator x)
355− , pullSubscribedParents :: ![SomeBehaviorSubscribed] -- Need to keep parent behaviors alive, or they won't let us know when they're invalidated
1013+ , pullSubscribedParents :: ![SomeBehaviorSubscribed x] -- Need to keep parent behaviors alive, or they won't let us know when they're invalidated
358--type role Pull representational
1016--type role Pull representational
359−data Pull a
1017+data Pull x a
360− = Pull { pullValue :: !(IORef (Maybe (PullSubscribed a)))
1018+ = Pull { pullValue :: !(IORef (Maybe (PullSubscribed x a)))
361− , pullCompute :: !(BehaviorM a)
1019+ , pullCompute :: !(BehaviorM x a)
362#ifdef DEBUG_NODEIDS
1020#ifdef DEBUG_NODEIDS
363 , pullNodeId :: Int
1021 , pullNodeId :: Int
367−data Invalidator
1025+data Invalidator x
368− = forall a. InvalidatorPull (Pull a)
1026+ = forall a. InvalidatorPull (Pull x a)
369− | forall a. InvalidatorSwitch (SwitchSubscribed a)
1027+ | forall a. InvalidatorSwitch (SwitchSubscribed x a)
371−data RootSubscribed a = forall k. GCompare k => RootSubscribed
1029+data RootSubscribed x a = forall k. GCompare k => RootSubscribed
372 { rootSubscribedKey :: !(k a)
1030 { rootSubscribedKey :: !(k a)
373− , rootSubscribedCachedSubscribed :: !(IORef (DMap k RootSubscribed)) -- From the original Root
1031+ , rootSubscribedCachedSubscribed :: !(IORef (DMap k (RootSubscribed x))) -- From the original Root
374− , rootSubscribedSubscribers :: !(SubscriberList a)
1032+ , rootSubscribedSubscribers :: !(WeakBag (Subscriber x a))
375 , rootSubscribedOccurrence :: !(IO (Maybe a)) -- Lookup from rootOccurrence
1033 , rootSubscribedOccurrence :: !(IO (Maybe a)) -- Lookup from rootOccurrence
376 , rootSubscribedUninit :: IO ()
1034 , rootSubscribedUninit :: IO ()
377− , rootSubscribedWeakSelf :: !(IORef (Weak (RootSubscribed a))) --TODO: Can we make this a lazy non-IORef and then force it manually to avoid an indirection each time we use it?
1035+ , rootSubscribedWeakSelf :: !(IORef (Weak (RootSubscribed x a))) --TODO: Can we make this a lazy non-IORef and then force it manually to avoid an indirection each time we use it?
378#ifdef DEBUG_NODEIDS
1036#ifdef DEBUG_NODEIDS
379 , rootSubscribedNodeId :: Int
1037 , rootSubscribedNodeId :: Int
383−data Root (k :: * -> *)
1041+data Root x k
384 = Root { rootOccurrence :: !(IORef (DMap k Identity)) -- The currently-firing occurrence of this event
1042 = Root { rootOccurrence :: !(IORef (DMap k Identity)) -- The currently-firing occurrence of this event
385− , rootSubscribed :: !(IORef (DMap k RootSubscribed))
1043+ , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
386− , rootInit :: !(forall a. k a -> RootTrigger a -> IO (IO ()))
1044+ , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
389−data SomeHoldInit = forall p a. R.Patch p => SomeHoldInit !(Hold p a)
1047+data SomeHoldInit x = forall p. Patch p => SomeHoldInit !(Hold x p)
391−data SomeMergeUpdate = forall k. GCompare k => SomeMergeUpdate (R.PatchDMap (DMap k Event)) (MergeSubscribed k)
1049+data SomeDynInit x = forall p. Patch p => SomeDynInit !(Dyn x p)
393−data SomeMergeInit = forall k. GCompare k => SomeMergeInit !(MergeSubscribed k) !(Event (R.PatchDMap (DMap k Event)))
1051+data SomeMergeUpdate x = SomeMergeUpdate
1052+ { _someMergeUpdate_update :: !(EventM x [EventSubscription x])
1053+ , _someMergeUpdate_invalidateHeight :: !(IO ())
1054+ , _someMergeUpdate_recalculateHeight :: !(IO ())
395−data SomeEventSubscription = forall a. SomeEventSubscription (EventSubscription a)
1057+newtype SomeMergeInit x = SomeMergeInit { unSomeMergeInit :: EventM x () }
397-- EventM can do everything BehaviorM can, plus create holds
1059-- EventM can do everything BehaviorM can, plus create holds
398−newtype EventM x a = EventM { unEventM :: ReaderT (EventEnv x) IO a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix, MonadException, MonadAsyncException) -- The environment should be Nothing if we are not in a frame, and Just if we are - in which case it is a list of assignments to be done after the frame is over
1060+newtype EventM x a = EventM { unEventM :: IO a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix, MonadException, MonadAsyncException)
400−data PushSubscribed a b
401− = PushSubscribed { pushSubscribedCachedSubscribed :: !(IORef (Maybe (PushSubscribed a b)))
402− , pushSubscribedOccurrence :: !(IORef (Maybe b)) -- If the current height is less than our height, this should always be Nothing; during our height, this will get filled in at some point, always before our children are notified; after our height, this will be filled in with the correct value (Nothing if we are not firing, Just if we are)
403− , pushSubscribedHeight :: !(IORef Height)
404− , pushSubscribedSubscribers :: !(SubscriberList b)
405− , pushSubscribedSelf :: !(Subscriber a) -- Hold this in memory to ensure our WeakReferences don't die --TODO: Probably unneeded now
406− , pushSubscribedWeakSelf :: !(IORef (Weak (PushSubscribed a b)))
407− , pushSubscribedParent :: !(EventSubscription a)
409− , pushSubscribedNodeId :: Int
413−newtype ComputeM a = ComputeM { unComputeM :: ReaderT (IORef [SomeHoldInit]) IO a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
1062+newtype MergeSubscribedParent x a = MergeSubscribedParent { unMergeSubscribedParent :: EventSubscription x }
415−instance Defer SomeHoldInit ComputeM where
1064+data MergeSubscribedParentWithMove x k a = MergeSubscribedParentWithMove
416− getDeferralQueue = ComputeM ask
1065+ { _mergeSubscribedParentWithMove_subscription :: !(EventSubscription x)
417−
1066+ , _mergeSubscribedParentWithMove_key :: !(IORef (k a))
418−{-# SPECIALIZE runComputeM :: ComputeM a -> EventM x a #-}
419−runComputeM :: Defer SomeHoldInit m => ComputeM a -> m a
420−runComputeM (ComputeM a) = liftIO . runReaderT a =<< getDeferralQueue
423− = Push { pushCompute :: !(a -> ComputeM (Maybe b)) -- Compute the current firing value; assumes that its parent has been computed --TODO: This only uses Defer SomeHoldInit EventM; perhaps only the hold init queue should be passed in (also, perhaps those hold inits can be accelerated - can there be a loop we would need to worry about?)
424− , pushParent :: !(Event a)
425− , pushSubscribed :: !(IORef (Maybe (PushSubscribed a b))) --TODO: Can we replace this with an unsafePerformIO thunk?
428−data MergeSubscribedParent k a
429− = MergeSubscribedParent { mergeSubscribedParentSubscription :: !(EventSubscription a)
430− , mergeSubscribedParentSubscriber :: !(Subscriber a)
433data HeightBag = HeightBag
1069data HeightBag = HeightBag
434 { _heightBag_size :: {-# UNPACK #-} !Int
1070 { _heightBag_size :: {-# UNPACK #-} !Int
@@ -446,7 +1082,8 @@ heightBagFromList :: [Height] -> HeightBag
446heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
1082heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
448heightBagAdd :: Height -> HeightBag -> HeightBag
1084heightBagAdd :: Height -> HeightBag -> HeightBag
449−heightBagAdd (Height h) (HeightBag s c) = heightBagVerify $ HeightBag (succ s) $ IntMap.insertWithKey (\_ _ old -> succ old) h 0 c
1085+heightBagAdd (Height h) (HeightBag s c) = heightBagVerify $ HeightBag (succ s) $
1086+ IntMap.insertWithKey (\_ _ old -> succ old) h 0 c
451heightBagRemove :: Height -> HeightBag -> HeightBag
1088heightBagRemove :: Height -> HeightBag -> HeightBag
452heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.lookup h c of
1089heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.lookup h c of
@@ -455,6 +1092,13 @@ heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.loo
455 0 -> IntMap.delete h c
1092 0 -> IntMap.delete h c
456 _ -> IntMap.insert h (pred old) c
1093 _ -> IntMap.insert h (pred old) c
1095+heightBagRemoveMaybe :: Height -> HeightBag -> Maybe HeightBag
1096+heightBagRemoveMaybe (Height h) b@(HeightBag s c) = heightBagVerify . removed <$> IntMap.lookup h c where
1097+ removed old = HeightBag (pred s) $ case old of
1098+ 0 -> IntMap.delete h c
1099+ _ -> IntMap.insert h (pred old) c
458heightBagMax :: HeightBag -> Height
1102heightBagMax :: HeightBag -> Height
459heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
1103heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
460 Just ((h, _), _) -> Height h
1104 Just ((h, _), _) -> Height h
@@ -472,363 +1116,183 @@ heightBagVerify b@(HeightBag s c) = if
472heightBagVerify = id
1116heightBagVerify = id
475−data MergeSubscribed k
1119+data FanSubscribedChildren x k v a = FanSubscribedChildren
476− = MergeSubscribed { mergeSubscribedCachedSubscribed :: !(IORef (Maybe (MergeSubscribed k))) -- From the original merge
1120+ { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x (v a)))
477− , mergeSubscribedOccurrence :: !(IORef (Maybe (DMap k Identity)))
478− , mergeSubscribedAccum :: !(IORef (DMap k Identity)) -- This will accumulate occurrences until our height is reached, at which point it will be transferred to mergeSubscribedOccurrence
479− , mergeSubscribedHeight :: !(IORef Height)
480− , mergeSubscribedHeightBag :: !(IORef HeightBag)
481− , mergeSubscribedSubscribers :: !(SubscriberList (DMap k Identity))
482− , mergeSubscribedChange :: !(IORef (Subscriber (R.PatchDMap (DMap k Event)), EventSubscribed (R.PatchDMap (DMap k Event))))
483− , mergeSubscribedParents :: !(IORef (DMap k (MergeSubscribedParent k)))
484− , mergeSubscribedWeakSelf :: !(IORef (Weak (MergeSubscribed k)))
486− , mergeSubscribedNodeId :: Int
490−--TODO: DMap sucks; we should really write something better (with a functor for the value as well as the key)
492− = Merge { mergeParents :: !(Dynamic R.PatchDMap (DMap k Event))
493− , mergeSubscribed :: !(IORef (Maybe (MergeSubscribed k)))
496−data FanSubscribedChildren k a = FanSubscribedChildren
497− { _fanSubscribedChildren_list :: !(SubscriberList a)
498− , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed k)
1121+ , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k v)
499− , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed k)))
1122+ , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k v)))
502−data FanSubscribed k
1125+data FanSubscribed x k v
503− = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed k)))
1126+ = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
1127+ , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k v)))
504− , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren k))) -- This DMap should never be empty
1128+ , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren x k v))) -- This DMap should never be empty
505− , fanSubscribedParent :: !(EventSubscription (DMap k Identity))
1129+ , fanSubscribedParent :: !(EventSubscription x)
506#ifdef DEBUG_NODEIDS
1130#ifdef DEBUG_NODEIDS
507 , fanSubscribedNodeId :: Int
1131 , fanSubscribedNodeId :: Int
511−data Fan k
1135+data Fan x k v
512− = Fan { fanParent :: !(Event (DMap k Identity))
1136+ = Fan { fanParent :: !(Event x (DMap k v))
513− , fanSubscribed :: !(IORef (Maybe (FanSubscribed k)))
1137+ , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
516−data SwitchSubscribed a
1140+data SwitchSubscribed x a
517− = SwitchSubscribed { switchSubscribedCachedSubscribed :: !(IORef (Maybe (SwitchSubscribed a)))
1141+ = SwitchSubscribed { switchSubscribedCachedSubscribed :: !(IORef (Maybe (SwitchSubscribed x a)))
518 , switchSubscribedOccurrence :: !(IORef (Maybe a))
1142 , switchSubscribedOccurrence :: !(IORef (Maybe a))
519 , switchSubscribedHeight :: !(IORef Height)
1143 , switchSubscribedHeight :: !(IORef Height)
520− , switchSubscribedSubscribers :: !(SubscriberList a)
1144+ , switchSubscribedSubscribers :: !(WeakBag (Subscriber x a))
521− , switchSubscribedOwnInvalidator :: {-# NOUNPACK #-} !Invalidator
1145+ , switchSubscribedOwnInvalidator :: {-# NOUNPACK #-} !(Invalidator x)
522− , switchSubscribedOwnWeakInvalidator :: !(IORef (Weak Invalidator))
1146+ , switchSubscribedOwnWeakInvalidator :: !(IORef (Weak (Invalidator x)))
523− , switchSubscribedBehaviorParents :: !(IORef [SomeBehaviorSubscribed])
1147+ , switchSubscribedBehaviorParents :: !(IORef [SomeBehaviorSubscribed x])
524− , switchSubscribedParent :: !(Behavior (Event a))
1148+ , switchSubscribedParent :: !(Behavior x (Event x a))
525− , switchSubscribedCurrentParent :: !(IORef (EventSubscription a))
1149+ , switchSubscribedCurrentParent :: !(IORef (EventSubscription x))
526− , switchSubscribedWeakSelf :: !(IORef (Weak (SwitchSubscribed a)))
1150+ , switchSubscribedWeakSelf :: !(IORef (Weak (SwitchSubscribed x a)))
527#ifdef DEBUG_NODEIDS
1151#ifdef DEBUG_NODEIDS
528 , switchSubscribedNodeId :: Int
1152 , switchSubscribedNodeId :: Int
532−data Switch a
1156+data Switch x a
533− = Switch { switchParent :: !(Behavior (Event a))
1157+ = Switch { switchParent :: !(Behavior x (Event x a))
534− , switchSubscribed :: !(IORef (Maybe (SwitchSubscribed a)))
1158+ , switchSubscribed :: !(IORef (Maybe (SwitchSubscribed x a)))
1161+#ifdef USE_TEMPLATE_HASKELL
1162+{-# ANN CoincidenceSubscribed "HLint: ignore Redundant bracket" #-}
537−data CoincidenceSubscribed a
1164+data CoincidenceSubscribed x a
538− = CoincidenceSubscribed { coincidenceSubscribedCachedSubscribed :: !(IORef (Maybe (CoincidenceSubscribed a)))
1165+ = CoincidenceSubscribed { coincidenceSubscribedCachedSubscribed :: !(IORef (Maybe (CoincidenceSubscribed x a)))
539 , coincidenceSubscribedOccurrence :: !(IORef (Maybe a))
1166 , coincidenceSubscribedOccurrence :: !(IORef (Maybe a))
540− , coincidenceSubscribedSubscribers :: !(SubscriberList a)
1167+ , coincidenceSubscribedSubscribers :: !(WeakBag (Subscriber x a))
541 , coincidenceSubscribedHeight :: !(IORef Height)
1168 , coincidenceSubscribedHeight :: !(IORef Height)
542− , coincidenceSubscribedOuter :: {-# NOUNPACK #-} (Subscriber (Event a))
1169+ , coincidenceSubscribedOuter :: {-# NOUNPACK #-} (Subscriber x (Event x a))
543− , coincidenceSubscribedOuterParent :: !(EventSubscription (Event a))
1170+ , coincidenceSubscribedOuterParent :: !(EventSubscription x)
544− , coincidenceSubscribedInnerParent :: !(IORef (Maybe (EventSubscribed a)))
1171+ , coincidenceSubscribedInnerParent :: !(IORef (Maybe (EventSubscribed x)))
545− , coincidenceSubscribedWeakSelf :: !(IORef (Weak (CoincidenceSubscribed a)))
1172+ , coincidenceSubscribedWeakSelf :: !(IORef (Weak (CoincidenceSubscribed x a)))
546#ifdef DEBUG_NODEIDS
1173#ifdef DEBUG_NODEIDS
547 , coincidenceSubscribedNodeId :: Int
1174 , coincidenceSubscribedNodeId :: Int
551−data Coincidence a
1178+data Coincidence x a
552− = Coincidence { coincidenceParent :: !(Event (Event a))
1179+ = Coincidence { coincidenceParent :: !(Event x (Event x a))
553− , coincidenceSubscribed :: !(IORef (Maybe (CoincidenceSubscribed a)))
1180+ , coincidenceSubscribed :: !(IORef (Maybe (CoincidenceSubscribed x a)))
556−data Subscriber a
1183+{-# NOINLINE newInvalidatorSwitch #-}
557− = forall b. SubscriberPush (a -> ComputeM (Maybe b)) (PushSubscribed a b) --TODO: Why does this have the pushCompute in it?
1184+newInvalidatorSwitch :: SwitchSubscribed x a -> IO (Invalidator x)
558− | forall k. GCompare k => SubscriberMerge !(k a) (MergeSubscribed k) --TODO: Can we inline the GCompare?
1185+newInvalidatorSwitch subd = return $! InvalidatorSwitch subd
559− | forall k. (a ~ R.PatchDMap (DMap k Event), GCompare k) => SubscriberMergeChange (MergeSubscribed k)
560− | forall k. (GCompare k, a ~ DMap k Identity) => SubscriberFan (FanSubscribed k)
561− | forall p b. (a ~ p b, R.Patch p) => SubscriberHold !(Hold p b)
562− | forall b. (a ~ Identity b) => SubscriberHoldIdentity !(Hold Identity b)
563− | SubscriberSwitch (SwitchSubscribed a)
564− | forall b. a ~ Event b => SubscriberCoincidenceOuter (CoincidenceSubscribed b)
565− | SubscriberCoincidenceInner (CoincidenceSubscribed a)
568−showSubscriberType :: Subscriber a -> String
569−showSubscriberType = \case
570− SubscriberPush _ _ -> "SubscriberPush"
571− SubscriberMerge _ _ -> "SubscriberMerge"
572− SubscriberFan _ -> "SubscriberFan"
573− SubscriberMergeChange _ -> "SubscriberMergeChange"
574− SubscriberHold _ -> "SubscriberHold"
575− SubscriberHoldIdentity _ -> "SubscriberHoldIdentity"
576− SubscriberSwitch _ -> "SubscriberSwitch"
577− SubscriberCoincidenceOuter _ -> "SubscriberCoincidenceOuter"
578− SubscriberCoincidenceInner _ -> "SubscriberCoincidenceInner"
579− SubscriberHandle -> "SubscriberHandle"
582− = forall k. GCompare k => EventRoot !(k a) !(Root k)
584− | forall b. EventPush !(Push b a)
585− | forall k. (GCompare k, a ~ DMap k Identity) => EventMerge !(Merge k)
586− | forall k. GCompare k => EventFan !(k a) !(Fan k)
587− | EventSwitch !(Switch a)
588− | EventCoincidence !(Coincidence a)
589− | forall p b. (a ~ p b, R.Patch p) => EventHold !(Hold p b)
590− | forall p b. (a ~ p b, R.Patch p) => EventDyn !(Dyn p b)
591− | forall b. (a ~ Identity b) => EventHoldIdentity !(Hold Identity b)
592− | forall b. (a ~ Identity b) => EventDynIdentity !(Dyn Identity b)
594−showEventType :: Event a -> String
595−showEventType = \case
596− EventRoot _ _ -> "EventRoot"
597− EventNever -> "EventNever"
598− EventPush _ -> "EventPush"
599− EventMerge _ -> "EventMerge"
600− EventFan _ _ -> "EventFan"
601− EventSwitch _ -> "EventSwitch"
602− EventCoincidence _ -> "EventCoincidence"
603− EventHold _ -> "EventHold"
604− EventDyn _ -> "EventDyn"
605− EventHoldIdentity _ -> "EventHoldIdentity"
606− EventDynIdentity _ -> "EventDynIdentity"
608−data EventSubscription a = EventSubscription
609− { _eventSubscription_ticket :: !(Maybe (SubscriberListTicket a))
610− , _eventSubscription_subscribed :: !(EventSubscribed a)
613−data EventSubscribed a
614− = EventSubscribedRoot {-# NOUNPACK #-} (RootSubscribed a)
615− | EventSubscribedNever
616− | forall b. EventSubscribedPush !(PushSubscribed b a)
617− | forall k. (GCompare k, a ~ DMap k Identity) => EventSubscribedMerge !(MergeSubscribed k)
618− | forall k. GCompare k => EventSubscribedFan !(k a) !(FanSubscribed k)
619− | EventSubscribedSwitch !(SwitchSubscribed a)
620− | EventSubscribedCoincidence !(CoincidenceSubscribed a)
622−unsubscribe :: EventSubscription a -> IO ()
623−unsubscribe (EventSubscription msln _) = forM_ msln $ \sln -> WeakBag.remove sln
625−-- These function are constructor functions that are marked NOINLINE so they are
626−-- opaque to GHC. If we do not do this, then GHC will sometimes fuse the constructor away
627−-- so any weak references that are attached to the constructors will have their
628−-- finalizer run. Using the opaque constructor, does not see the
629−-- constructor application, so it behaves like an IORef and cannot be fused away.
631−-- The result is also evaluated to WHNF, since forcing a thunk invalidates
632−-- the weak pointer to it in some cases.
634−--TODO: I think all of these noinlines are now unnecessary
635−{-# NOINLINE newSubscriberPush #-}
636−newSubscriberPush :: (a -> ComputeM (Maybe b)) -> PushSubscribed a b -> IO (Subscriber a)
637−newSubscriberPush compute subd = return $! SubscriberPush compute subd
640− "newSubscriberHold/Identity" forall h. newSubscriberHold h = newSubscriberHoldIdentity h
642−{-# NOINLINE newSubscriberHold #-}
643−newSubscriberHold :: R.Patch p => Hold p a -> IO (Subscriber (p a))
644−newSubscriberHold h = return $! SubscriberHold h
646−{-# NOINLINE newSubscriberHoldIdentity #-}
647−newSubscriberHoldIdentity :: Hold Identity a -> IO (Subscriber (Identity a))
648−newSubscriberHoldIdentity h = return $! SubscriberHoldIdentity h
650−{-# NOINLINE newSubscriberMerge #-}
651−newSubscriberMerge :: GCompare k => k a -> MergeSubscribed k -> IO (Subscriber a)
652−newSubscriberMerge k subd = return $! SubscriberMerge k subd
654−{-# NOINLINE newSubscriberMergeChange #-}
655−newSubscriberMergeChange :: GCompare k => MergeSubscribed k -> IO (Subscriber (R.PatchDMap (DMap k Event)))
656−newSubscriberMergeChange subd = return $! SubscriberMergeChange subd
658−{-# NOINLINE newSubscriberFan #-}
1187+{-# NOINLINE newInvalidatorPull #-}
659−newSubscriberFan :: GCompare k => FanSubscribed k -> IO (Subscriber (DMap k Identity))
1188+newInvalidatorPull :: Pull x a -> IO (Invalidator x)
660−newSubscriberFan subd = return $! SubscriberFan subd
1189+newInvalidatorPull p = return $! InvalidatorPull p
662−{-# NOINLINE newSubscriberSwitch #-}
1191+instance HasSpiderTimeline x => Filterable (Event x) where
663−newSubscriberSwitch :: SwitchSubscribed a -> IO (Subscriber a)
1192+ mapMaybe f = push $ return . f
664−newSubscriberSwitch subd = return $! SubscriberSwitch subd
666−{-# NOINLINE newSubscriberCoincidenceOuter #-}
1194+instance HasSpiderTimeline x => Align (Event x) where
667−newSubscriberCoincidenceOuter :: CoincidenceSubscribed b -> IO (Subscriber (Event b))
1195+ nil = eventNever
668−newSubscriberCoincidenceOuter subd = return $! SubscriberCoincidenceOuter subd
1196+#if MIN_VERSION_these(0, 8, 0)
1197+instance HasSpiderTimeline x => Semialign (Event x) where
1199+ align ea eb = mapMaybe dmapToThese $ mergeG coerce $ dynamicConst $
1200+ DMap.fromDistinctAscList [LeftTag :=> ea, RightTag :=> eb]
670−{-# NOINLINE newSubscriberCoincidenceInner #-}
1202+#ifdef MIN_VERSION_semialign
671−newSubscriberCoincidenceInner :: CoincidenceSubscribed a -> IO (Subscriber a)
1203+#if MIN_VERSION_semialign(1,1,0)
672−newSubscriberCoincidenceInner subd = return $! SubscriberCoincidenceInner subd
1204+instance HasSpiderTimeline x => Zip (Event x) where
1206+ zip x y = mapMaybe justThese $ align x y
674−{-# NOINLINE newInvalidatorSwitch #-}
1209+data DynType x p = UnsafeDyn !(BehaviorM x (PatchTarget p), Event x p)
675−newInvalidatorSwitch :: SwitchSubscribed a -> IO Invalidator
1210+ | BuildDyn !(EventM x (PatchTarget p), Event x p)
676−newInvalidatorSwitch subd = return $! InvalidatorSwitch subd
1211+ | HoldDyn !(Hold x p)
678−{-# NOINLINE newInvalidatorPull #-}
1213+newtype Dyn (x :: Type) p = Dyn { unDyn :: IORef (DynType x p) }
679−newInvalidatorPull :: Pull a -> IO Invalidator
680−newInvalidatorPull p = return $! InvalidatorPull p
682−data Dynamic p a
1215+newMapDyn :: HasSpiderTimeline x => (a -> b) -> DynamicS x (Identity a) -> DynamicS x (Identity b)
683− = DynamicHold !(Hold p a)
684− | p ~ Identity => DynamicHoldIdentity !(Hold Identity a)
686− | DynamicDyn !(Dyn p a)
687− | p ~ Identity => DynamicDynIdentity !(Dyn Identity a)
689−{-# INLINE current #-}
690−current :: R.Patch p => Dynamic p a -> Behavior a
692− DynamicHold h -> BehaviorHold h
693− DynamicHoldIdentity h -> BehaviorHoldIdentity h
694− DynamicConst a -> BehaviorConst a
695− DynamicDyn d -> BehaviorDyn d
696− DynamicDynIdentity d -> BehaviorDynIdentity d
698−--TODO: If you only need updated, not current, can we avoid actually constructing the Hold?
699−{-# INLINE updated #-}
700−updated :: R.Patch p => Dynamic p a -> Event (p a)
702− DynamicHold h -> EventHold h
703− DynamicHoldIdentity h -> EventHoldIdentity h
704− DynamicConst _ -> EventNever
705− DynamicDyn d -> EventDyn d
706− DynamicDynIdentity d -> EventDynIdentity d
708−newMapDyn :: (a -> b) -> Dynamic Identity a -> Dynamic Identity b
709−newMapDyn f d = DynamicDynIdentity $ unsafeDyn (fmap f $ readBehaviorTracked $ current d) (fmap (Identity . f . runIdentity) $ updated d)
1216+newMapDyn f d = dynamicDynIdentity $ unsafeBuildDynamic (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
711−instance Functor (Dynamic Identity) where
712− fmap f d = newMapDyn f d
714−instance Applicative (Dynamic Identity) where
716− (<*>) = zipDynWith ($)
720−instance R.FunctorMaybe Event where
721− fmapMaybe f = push $ return . f
723−instance Align Event where
725− align ea eb = R.fmapMaybe R.dmapToThese $ merge $ DynamicConst $ DMap.fromList [R.LeftTag :=> ea, R.RightTag :=> eb]
727--TODO: Avoid the duplication between this and R.zipDynWith
1218--TODO: Avoid the duplication between this and R.zipDynWith
728−zipDynWith :: (a -> b -> c) -> Dynamic Identity a -> Dynamic Identity b -> Dynamic Identity c
1219+zipDynWith :: HasSpiderTimeline x => (a -> b -> c) -> DynamicS x (Identity a) -> DynamicS x (Identity b) -> DynamicS x (Identity c)
729zipDynWith f da db =
1220zipDynWith f da db =
730− let eab = align (updated da) (updated db)
1221+ let eab = align (dynamicUpdated da) (dynamicUpdated db)
731 ec = flip push eab $ \o -> do
1222 ec = flip push eab $ \o -> do
732 (a, b) <- case o of
1223 (a, b) <- case o of
733 This (Identity a) -> do
1224 This (Identity a) -> do
734− b <- readBehaviorUntracked $ current db
1225+ b <- readBehaviorUntracked $ dynamicCurrent db
735 return (a, b)
1226 return (a, b)
736 That (Identity b) -> do
1227 That (Identity b) -> do
737− a <- readBehaviorUntracked $ current da
1228+ a <- readBehaviorUntracked $ dynamicCurrent da
738 return (a, b)
1229 return (a, b)
739 These (Identity a) (Identity b) -> return (a, b)
1230 These (Identity a) (Identity b) -> return (a, b)
740 return $ Just $ Identity $ f a b
1231 return $ Just $ Identity $ f a b
741− in DynamicDynIdentity $ unsafeDyn (f <$> readBehaviorUntracked (current da) <*> readBehaviorUntracked (current db)) ec
1232+ in dynamicDynIdentity $ unsafeBuildDynamic (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
743−instance Monad (Dynamic Identity) where
1234+buildDynamic :: (Defer (SomeDynInit x) m, Patch p) => EventM x (PatchTarget p) -> Event x p -> m (Dyn x p)
744− {-# INLINE return #-}
1235+buildDynamic readV0 v' = do
745− return = pure
1236+ result <- liftIO $ newIORef $ BuildDyn (readV0, v')
746− {-# INLINE (>>=) #-}
1237+ let !d = Dyn result
747− x >>= f = DynamicDynIdentity $ newJoinDyn $ newMapDyn f x --TODO: (>>), fail
1238+ defer $ SomeDynInit d
748− {-# INLINE (>>) #-}
1239+ return d
751− fail _ = error "Dynamic does not support 'fail'"
753−newtype Dyn p a = Dyn { unDyn :: IORef (Either (BehaviorM a, Event (p a)) (Hold p a)) }
755−unsafeDyn :: BehaviorM a -> Event (p a) -> Dyn p a
1241+unsafeBuildDynamic :: BehaviorM x (PatchTarget p) -> Event x p -> Dyn x p
756−unsafeDyn readV0 v' = Dyn $ unsafeNewIORef x $ Left x
1242+unsafeBuildDynamic readV0 v' =
757− where x = (readV0, v')
1243+ Dyn $ unsafePerformIO $ newIORef $ UnsafeDyn (readV0, v')
759−newJoinDyn :: Dynamic Identity (Dynamic Identity a) -> Dyn Identity a
761− let readV0 = readBehaviorTracked . current =<< readBehaviorTracked (current d)
762− eOuter = push (fmap (Just . Identity) . readBehaviorUntracked . current . runIdentity) $ updated d
763− eInner = switch $ fmap updated $ current d
764− eBoth = coincidence $ fmap (updated . runIdentity) $ updated d
765− v' = unSpiderEvent $ R.leftmost $ map SpiderEvent [eBoth, eOuter, eInner]
766− in unsafeDyn readV0 v'
768−--type role Behavior representational
770− = forall p. BehaviorHold !(Hold p a)
771− | BehaviorHoldIdentity !(Hold Identity a)
773− | BehaviorPull !(Pull a)
774− | BehaviorDynIdentity !(Dyn Identity a)
775− | forall p. R.Patch p => BehaviorDyn !(Dyn p a)
777-- ResultM can read behaviors and events
1245-- ResultM can read behaviors and events
778type ResultM = EventM
1246type ResultM = EventM
780−{-# NOINLINE unsafeNewIORef #-}
781−unsafeNewIORef :: a -> b -> IORef b
782−unsafeNewIORef _ b = unsafePerformIO $ newIORef b
784−instance Functor Event where
1248+instance HasSpiderTimeline x => Functor (Event x) where
785 fmap f = push $ return . Just . f
1249 fmap f = push $ return . Just . f
787−instance Functor Behavior where
1251+instance Functor (Behavior x) where
788− fmap f = pull . liftM f . readBehaviorTracked
1252+ fmap f = pull . fmap f . readBehaviorTracked
790−{-# NOINLINE push #-} --TODO: If this is helpful, we can get rid of the unsafeNewIORef and use unsafePerformIO directly
1254+{-# INLINE push #-}
791−push :: forall a b. (a -> ComputeM (Maybe b)) -> Event a -> Event b
1255+push :: HasSpiderTimeline x => (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
792−push f e = EventPush $ Push
1256+push f e = cacheEvent (pushCheap f e)
795− , pushSubscribed = unsafeNewIORef (f, e) Nothing --TODO: Does the use of the tuple here create unnecessary overhead?
797−-- DISABLED: {- RULES "push/push" forall f g e. push f (push g e) = push (maybe (return Nothing) f <=< g) e #-}
799−{-# NOINLINE pull #-}
1258+{-# INLINABLE pull #-}
800−pull :: BehaviorM a -> Behavior a
1259+pull :: BehaviorM x a -> Behavior x a
801−pull a = BehaviorPull $ Pull
1260+pull a = unsafePerformIO $ do
802− { pullCompute = a
1261+ ref <- newIORef Nothing
803− , pullValue = unsafeNewIORef a Nothing
804#ifdef DEBUG_NODEIDS
1262#ifdef DEBUG_NODEIDS
805− , pullNodeId = unsafeNodeId a
1263+ nid <- newNodeId
807− }
1265+ pure $ behaviorPull $ Pull
808−
1266+ { pullCompute = a
809−{-# NOINLINE switch #-}
1267+ , pullValue = ref
810−switch :: Behavior (Event a) -> Event a
1268+#ifdef DEBUG_NODEIDS
811−switch a = EventSwitch $ Switch
1269+ , pullNodeId = nid
812− { switchParent = a
1270+#endif
813− , switchSubscribed = unsafeNewIORef a Nothing
816−coincidence :: Event (Event a) -> Event a
1273+{-# INLINABLE switch #-}
817−coincidence a = EventCoincidence $ Coincidence
1274+switch :: HasSpiderTimeline x => Behavior x (Event x a) -> Event x a
818− { coincidenceParent = a
1275+switch a = unsafePerformIO $ do
819− , coincidenceSubscribed = unsafeNewIORef a Nothing
1276+ ref <- newIORef Nothing
1277+ pure $ eventSwitch $ Switch
1279+ , switchSubscribed = ref
822−propagateAndUpdateSubscribersRef :: SubscriberList a -> a -> EventM x ()
1282+coincidence :: HasSpiderTimeline x => Event x (Event x a) -> Event x a
823−propagateAndUpdateSubscribersRef subscribersRef a = do
1283+coincidence a = unsafePerformIO $ do
824− propagate a subscribersRef
1284+ ref <- newIORef Nothing
1285+ pure $ eventCoincidence $ Coincidence
1286+ { coincidenceParent = a
1287+ , coincidenceSubscribed = ref
826-- Propagate the given event occurrence; before cleaning up, run the given action, which may read the state of events and behaviors
1290-- Propagate the given event occurrence; before cleaning up, run the given action, which may read the state of events and behaviors
827−run :: [DSum RootTrigger Identity] -> ResultM x b -> SpiderHost x b
1291+run :: forall x b. HasSpiderTimeline x => [DSum (RootTrigger x) Identity] -> ResultM x b -> SpiderHost x b
828run roots after = do
1292run roots after = do
829− tracePropagate $ "Running an event frame with " <> show (length roots) <> " events"
1293+ tracePropagate (Proxy :: Proxy x) $ "Running an event frame with " <> show (length roots) <> " events"
830− spiderEnv <- SpiderHost ask
1294+ let t = spiderTimeline :: SpiderTimelineEnv x
831− result <- SpiderHost $ lift $ withMVar (_spiderEnv_lock spiderEnv) $ \_ -> flip runReaderT spiderEnv $ unSpiderHost $ runFrame $ do
1295+ result <- SpiderHost $ withMVar (_spiderTimeline_lock (unSTE t)) $ \_ -> unSpiderHost $ runFrame $ do
832 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
1296 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
833 occBefore <- liftIO $ do
1297 occBefore <- liftIO $ do
834 occBefore <- readIORef occRef
1298 occBefore <- readIORef occRef
@@ -839,43 +1303,40 @@ run roots after = do
839 return $ Just r
1303 return $ Just r
840 else return Nothing
1304 else return Nothing
841 forM_ (catMaybes rootsToPropagate) $ \(RootTrigger (subscribersRef, _, _) :=> Identity a) -> do
1305 forM_ (catMaybes rootsToPropagate) $ \(RootTrigger (subscribersRef, _, _) :=> Identity a) -> do
842− propagateAndUpdateSubscribersRef subscribersRef a
1306+ propagate a subscribersRef
843− delayedRef <- EventM $ asks eventEnvDelayedMerges
1307+ delayedRef <- asksEventEnv eventEnvDelayedMerges
844 let go = do
1308 let go = do
845 delayed <- liftIO $ readIORef delayedRef
1309 delayed <- liftIO $ readIORef delayedRef
846 case IntMap.minViewWithKey delayed of
1310 case IntMap.minViewWithKey delayed of
847 Nothing -> return ()
1311 Nothing -> return ()
848 Just ((currentHeight, cur), future) -> do
1312 Just ((currentHeight, cur), future) -> do
849− tracePropagate $ "Running height " ++ show currentHeight
1313+ tracePropagate (Proxy :: Proxy x) $ "Running height " ++ show currentHeight
850 putCurrentHeight $ Height currentHeight
1314 putCurrentHeight $ Height currentHeight
851 liftIO $ writeIORef delayedRef $! future
1315 liftIO $ writeIORef delayedRef $! future
852− forM_ cur $ \d -> case d of
1316+ sequence_ cur
853− DelayedMerge subscribed -> do
854− height <- liftIO $ readIORef $ mergeSubscribedHeight subscribed
855− case height `compare` Height currentHeight of
856− LT -> error "Somehow a merge's height has been decreased after it was scheduled"
857− GT -> scheduleMerge height subscribed -- The height has been increased (by a coincidence event; TODO: is this the only way?)
859− m <- liftIO $ readIORef $ mergeSubscribedAccum subscribed
860− liftIO $ writeIORef (mergeSubscribedAccum subscribed) $! DMap.empty
861− --TODO: Assert that m is not empty
862− liftIO $ writeIORef (mergeSubscribedOccurrence subscribed) $! Just m
863− scheduleClear $ mergeSubscribedOccurrence subscribed
864− propagateAndUpdateSubscribersRef (mergeSubscribedSubscribers subscribed) m
867 putCurrentHeight maxBound
1319 putCurrentHeight maxBound
869− tracePropagate "Done running an event frame"
1321+ tracePropagate (Proxy :: Proxy x) "Done running an event frame"
870 return result
1322 return result
872−data SomeClear = forall a. SomeClear (IORef (Maybe a))
1324+scheduleMerge' :: HasSpiderTimeline x => Height -> IORef Height -> EventM x () -> EventM x ()
1325+scheduleMerge' initialHeight heightRef a = scheduleMerge initialHeight $ do
1326+ height <- liftIO $ readIORef heightRef
1327+ currentHeight <- getCurrentHeight
1328+ case height `compare` currentHeight of
1329+ LT -> error "Somehow a merge's height has been decreased after it was scheduled"
1330+ GT -> scheduleMerge' height heightRef a -- The height has been increased (by a coincidence event; TODO: is this the only way?)
1333+newtype Clear a = Clear (IORef (Maybe a))
874−data SomeRootClear = forall k. SomeRootClear (IORef (DMap k Identity))
1335+newtype IntClear a = IntClear (IORef (IntMap a))
876−data SomeAssignment = forall a. SomeAssignment {-# UNPACK #-} !(IORef a) {-# UNPACK #-} !(IORef [Weak Invalidator]) a
1337+newtype RootClear k = RootClear (IORef (DMap k Identity))
878−data DelayedMerge = forall k. DelayedMerge (MergeSubscribed k)
1339+data SomeAssignment x = forall a. SomeAssignment {-# UNPACK #-} !(IORef a) {-# UNPACK #-} !(IORef [Weak (Invalidator x)]) a
880debugFinalize :: Bool
1341debugFinalize :: Bool
881debugFinalize = False
1342debugFinalize = False
@@ -885,79 +1346,110 @@ mkWeakPtrWithDebug x debugNote = do
885 x' <- evaluate x
1346 x' <- evaluate x
886 mkWeakPtr x' $
1347 mkWeakPtr x' $
887 if debugFinalize
1348 if debugFinalize
888− then Just $ putStrLn $ "finalizing: " ++ debugNote
1349+ then Just $ debugStrLn $ "finalizing: " ++ debugNote
889 else Nothing
1350 else Nothing
891type WeakList a = [Weak a]
1352type WeakList a = [Weak a]
893−{-# INLINE withIncreasedDepth #-}
1354+type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
894#ifdef DEBUG
1359#ifdef DEBUG
1361+debugSubscriber :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> IO (Subscriber x a)
1362+debugSubscriber description = return . debugSubscriber' description
1364+debugSubscriber' :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> Subscriber x a
1365+debugSubscriber' description subscribed = Subscriber
1367+ subscriberPropagate = \m -> do
1368+ tracePropagate (Proxy :: Proxy x) ("subscriberPropagate: " <> description)
1369+ subscriberPropagate subscribed m
1370+ , subscriberInvalidateHeight = \old -> do
1371+ traceInvalidateHeight $ "invalidateSubscriberHeight: " <> description <> ", old = " <> show (unHeight old)
1372+ subscriberInvalidateHeight subscribed old
1373+ traceInvalidateHeight $ "invalidateSubscriberHeight: " <> description <> ", done"
1374+ , subscriberRecalculateHeight = \new -> do
1375+ traceInvalidateHeight $ "subscriberRecalculateHeight: " <> description <> ", new = " <> show (unHeight new)
1376+ subscriberRecalculateHeight subscribed new
1377+ traceInvalidateHeight $ "subscriberRecalculateHeight: " <> description <> ", done"
895−withIncreasedDepth :: CanTrace x m => m a -> m a
1381+{-# INLINE withIncreasedDepth #-}
1382+withIncreasedDepth :: forall proxy x m a. CanTrace x m => proxy x -> m a -> m a
896−withIncreasedDepth a = do
1383+withIncreasedDepth _ a = do
897− spiderEnv <- askSpiderEnv
1384+ liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) succ
898− liftIO $ modifyIORef' (_spiderEnv_depth spiderEnv) succ
899 result <- a
1385 result <- a
900− liftIO $ modifyIORef' (_spiderEnv_depth spiderEnv) pred
1386+ liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) pred
901 return result
1387 return result
903−withIncreasedDepth :: m a -> m a
904−withIncreasedDepth = id
907−type CanTrace x m = (HasSpiderEnv x m, MonadIO m)
909{-# INLINE tracePropagate #-}
1389{-# INLINE tracePropagate #-}
910−tracePropagate :: (CanTrace x m) => String -> m ()
1390+tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
911−tracePropagate = traceWhen debugPropagate
1391+tracePropagate p = when debugPropagate . trace p
913−{-# INLINE traceSubscribe #-}
914−traceSubscribe :: String -> IO ()
915−traceSubscribe = when debugSubscribe . liftIO . putStrLn
917{-# INLINE traceInvalidate #-}
1393{-# INLINE traceInvalidate #-}
918traceInvalidate :: String -> IO ()
1394traceInvalidate :: String -> IO ()
919−traceInvalidate = when debugInvalidate . liftIO . putStrLn
1395+traceInvalidate = when debugInvalidate . liftIO . debugStrLn
1397+{-# INLINE traceInvalidateHeight #-}
1398+traceInvalidateHeight :: String -> IO ()
1399+traceInvalidateHeight = when debugInvalidateHeight . liftIO . debugStrLn
921−{-# INLINE traceWhen #-}
1401+{-# INLINE trace #-}
922−traceWhen :: (CanTrace x m) => Bool -> String -> m ()
1402+trace :: (CanTrace x m) => proxy x -> String -> m ()
923−traceWhen b message = traceMWhen b $ return message
1403+trace p message = traceM p $ return message
925−{-# INLINE traceMWhen #-}
1405+{-# INLINE traceM #-}
926−traceMWhen :: (CanTrace x m) => Bool -> m String -> m ()
1406+traceM :: forall x proxy m. (CanTrace x m) => proxy x -> m String -> m ()
927−traceMWhen b getMessage = when b $ do
1407+traceM _ getMessage = do
928 message <- getMessage
1408 message <- getMessage
929−#ifdef DEBUG
1409+ d <- liftIO $ readIORef $ _spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
930− spiderEnv <- askSpiderEnv
1410+ liftIO $ debugStrLn $ replicate d ' ' <> message
931− d <- liftIO $ readIORef $ _spiderEnv_depth spiderEnv
1411+
1414+{-# INLINE withIncreasedDepth #-}
1415+withIncreasedDepth :: proxy x -> m a -> m a
1416+withIncreasedDepth _ = id
1418+{-# INLINE tracePropagate #-}
1419+tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1420+tracePropagate _ _ = return ()
1422+{-# INLINE traceInvalidate #-}
1423+traceInvalidate :: String -> IO ()
1424+traceInvalidate _ = return ()
1426+{-# INLINE traceInvalidateHeight #-}
1427+traceInvalidateHeight :: String -> IO ()
1428+traceInvalidateHeight _ = return ()
1430+{-# INLINE debugSubscriber #-}
1431+debugSubscriber :: String -> Subscriber x a -> IO (Subscriber x a)
1432+debugSubscriber _ = return
1434+{-# INLINE debugSubscriber' #-}
1435+debugSubscriber' :: String -> Subscriber x a -> Subscriber x a
1436+debugSubscriber' _ = id
1440+{-# INLINE trace #-}
1441+trace :: (CanTrace x m) => proxy x -> String -> m ()
1442+trace _ _ = return ()
1444+{-# INLINE traceM #-}
1445+traceM :: (CanTrace x m) => proxy x -> m String -> m ()
1446+traceM _ _ = return ()
935− liftIO $ putStrLn $ replicate d ' ' <> message
937whoCreatedIORef :: IORef a -> IO [String]
1450whoCreatedIORef :: IORef a -> IO [String]
938whoCreatedIORef (IORef a) = whoCreated $! a
1451whoCreatedIORef (IORef a) = whoCreated $! a
940−whoCreatedEventSubscribed :: EventSubscribed a -> IO [String]
941−whoCreatedEventSubscribed = \case
942− EventSubscribedRoot _ -> return ["root"]
943− EventSubscribedNever -> return ["never"]
944− EventSubscribedPush subscribed -> whoCreatedIORef $ pushSubscribedCachedSubscribed subscribed
945− EventSubscribedFan _ subscribed -> whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
946− EventSubscribedMerge subscribed -> whoCreatedIORef $ mergeSubscribedCachedSubscribed subscribed
947− EventSubscribedSwitch subscribed -> whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
948− EventSubscribedCoincidence subscribed -> whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
950−walkInvalidHeightParents :: EventSubscribed a -> IO [Some EventSubscribed]
951−walkInvalidHeightParents s0 = do
952− subscribers <- flip execStateT mempty $ ($ Some.This s0) $ fix $ \loop (Some.This s) -> do
953− h <- liftIO $ readIORef $ eventSubscribedHeightRef s
954− when (h == invalidHeight) $ do
955− when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
956− modify (Some.This s :)
957− mapM_ loop =<< liftIO (eventSubscribedGetParents s)
958− forM_ subscribers $ \(Some.This s) -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
961groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
1453groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
962groupByHead = \case
1454groupByHead = \case
963 [] -> []
1455 [] -> []
@@ -968,562 +1460,288 @@ groupByHead = \case
968 | otherwise -> (x, xs :| []) : l
1460 | otherwise -> (x, xs :| []) : l
970listsToForest :: Eq a => [[a]] -> Forest a
1462listsToForest :: Eq a => [[a]] -> Forest a
971−listsToForest l = fmap (\(a, l') -> Node a $ listsToForest $ toList l') $ groupByHead $ catMaybes $ fmap nonEmpty l
1463+listsToForest lists = buildForest <$> groupByHead (mapMaybe nonEmpty lists)
1464+ where buildForest (a, lists') = Node a $ listsToForest $ toList lists'
973−-- | Propagate everything at the current height
1466+showStacks :: [[String]] -> String
974−propagate :: a -> SubscriberList a -> EventM x ()
1467+showStacks = drawForest . listsToForest . fmap (filterStack "Reflex.Spider.Internal")
975−propagate a subscribers = withIncreasedDepth $ do
976− -- Note: in the following traversal, we do not visit nodes that are added to the list during our traversal; they are new events, which will necessarily have full information already, so there is no need to traverse them
977− --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
978− WeakBag.traverse subscribers $ \s -> case s of
979− SubscriberPush compute subscribed -> {-# SCC "traversePush" #-} do
980− tracePropagate $ "SubscriberPush" <> showNodeId subscribed
981− occ <- runComputeM $ compute a
983− Nothing -> return () -- No need to write a Nothing back into the Ref
985− liftIO $ writeIORef (pushSubscribedOccurrence subscribed) occ
986− scheduleClear $ pushSubscribedOccurrence subscribed
987− propagate o $ pushSubscribedSubscribers subscribed
988− SubscriberMerge k subscribed -> {-# SCC "traverseMerge" #-} do
989− tracePropagate $ "SubscriberMerge" <> showNodeId subscribed
990− oldM <- liftIO $ readIORef $ mergeSubscribedAccum subscribed
991− let newM = DMap.insertWith (error $ "Same key fired multiple times for Merge" <> showNodeId subscribed) k (Identity a) oldM
992− tracePropagate $ " DMap.size oldM = " <> show (DMap.size oldM) <> "; DMap.size newM = " <> show (DMap.size newM)
993− liftIO $ writeIORef (mergeSubscribedAccum subscribed) $! newM
994− when (DMap.null oldM) $ do -- Only schedule the firing once
995− height <- liftIO $ readIORef $ mergeSubscribedHeight subscribed
996− --TODO: assertions about height
997− currentHeight <- getCurrentHeight
998− when (height <= currentHeight) $ do
999− myStack <- liftIO $ whoCreatedIORef $ mergeSubscribedCachedSubscribed subscribed
1000− if height /= invalidHeight
1001− then error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
1003− nodesInvolvedInCycle <- walkInvalidHeightParents $ EventSubscribedMerge subscribed
1004− stacks <- forM nodesInvolvedInCycle $ \(Some.This es) -> whoCreatedEventSubscribed es
1005− error $ "Causality loop found:\n" <> drawForest (listsToForest stacks)
1006− scheduleMerge height subscribed
1007− SubscriberMergeChange subscribed -> {-# SCC "traverseMergeChange" #-} do
1008− tracePropagate $ "SubscriberMerge" <> showNodeId subscribed
1009− defer $ SomeMergeUpdate a subscribed
1010− SubscriberFan subscribed -> {-# SCC "traverseFan" #-} do
1011− subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
1012− tracePropagate $ "SubscriberFan" <> showNodeId subscribed <> ": " ++ show (DMap.size subs) ++ " keys subscribed, " ++ show (DMap.size a) ++ " keys firing"
1013− --TODO: We need a better DMap intersection; here, we are assuming that the number of firing keys is small and the number of subscribers is large
1014− forM_ (DMap.toList a) $ \(k :=> Identity v) -> {-# SCC "SubscriberFan" #-} case DMap.lookup k subs of
1016− tracePropagate "No subscriber for key"
1019− propagate v $ _fanSubscribedChildren_list subsubs
1021− SubscriberHold h -> {-# SCC "traverseHold" #-} propagateSubscriberHold h a
1022− SubscriberHoldIdentity h -> {-# SCC "traverseHoldIdentity" #-} propagateSubscriberHold h a
1023− SubscriberSwitch subscribed -> {-# SCC "traverseSwitch" #-} do
1024− tracePropagate $ "SubscriberSwitch" <> showNodeId subscribed
1025− liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $! Just a
1026− scheduleClear $ switchSubscribedOccurrence subscribed
1027− propagate a $ switchSubscribedSubscribers subscribed
1028− SubscriberCoincidenceOuter subscribed -> {-# SCC "traverseCoincidenceOuter" #-} do
1029− tracePropagate $ "SubscriberCoincidenceOuter" <> showNodeId subscribed
1030− outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
1031− tracePropagate $ " outerHeight = " <> show outerHeight
1032− (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
1033− tracePropagate $ " isJust occ = " <> show (isJust occ)
1034− tracePropagate $ " innerHeight = " <> show innerHeight
1035− liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $! Just innerSubd
1036− scheduleClear $ coincidenceSubscribedInnerParent subscribed
1039− when (innerHeight > outerHeight) $ liftIO $ do -- If the event fires, it will fire at a later height
1040− writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
1041− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
1042− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
1043− Just o -> do -- Since it's already firing, no need to adjust height
1044− liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
1045− scheduleClear $ coincidenceSubscribedOccurrence subscribed
1046− propagate o $ coincidenceSubscribedSubscribers subscribed
1047− SubscriberCoincidenceInner subscribed -> {-# SCC "traverseCoincidenceInner" #-} do
1048− tracePropagate $ "SubscriberCoincidenceInner" <> showNodeId subscribed
1049− occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
1051− Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
1053− liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $! Just a
1054− scheduleClear $ coincidenceSubscribedOccurrence subscribed
1055− propagate a $ coincidenceSubscribedSubscribers subscribed
1056− SubscriberHandle -> {-# SCC "traverseHandle" #-} tracePropagate "SubscriberHandle"
1058−{-# INLINE propagateSubscriberHold #-}
1469+filterStack :: String -> [String] -> [String]
1059−propagateSubscriberHold :: R.Patch p => Hold p a -> p a -> EventM x ()
1470+#ifdef DEBUG_HIDE_INTERNALS
1060−propagateSubscriberHold h a = do
1471+filterStack prefix = filter (not . (prefix `isPrefixOf`))
1061− {-# SCC "trace" #-} traceMWhen debugPropagate $ liftIO $ do
1472+#else
1062− invalidators <- liftIO $ readIORef $ holdInvalidators h
1473+filterStack prefix = id
1063− return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1474+#endif
1064− v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1065− case {-# SCC "apply" #-} R.apply a v of
1066− Nothing -> return ()
1068− {-# SCC "trace2" #-} withIncreasedDepth $ tracePropagate $ "propagateSubscriberHold: assigning Hold" <> showNodeId h
1069− vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1070− iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1071− defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
1073−data SomeResetCoincidence = forall a. SomeResetCoincidence !(EventSubscription a) !(Maybe (CoincidenceSubscribed a)) -- The CoincidenceSubscriber will be present only if heights need to be reset
1476+#ifdef DEBUG_CYCLES
1075−{-# INLINE subscribeCoincidenceInner #-}
1478+data EventLoopException = EventLoopException [[String]]
1076−subscribeCoincidenceInner :: CanSubscribe x m => Event a -> Height -> CoincidenceSubscribed a -> m (Maybe a, Height, EventSubscribed a)
1479+instance Exception EventLoopException
1077−subscribeCoincidenceInner o outerHeight subscribedUnsafe = do
1078− subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
1079− subscription@(EventSubscription _ innerSubd) <- subscribe o subInner
1080− innerOcc <- liftIO $ readEventSubscribed innerSubd
1081− innerHeight <- liftIO $ readIORef $ eventSubscribedHeightRef innerSubd
1082− let height = max innerHeight outerHeight
1083− defer $ SomeResetCoincidence subscription $ if height > outerHeight then Just subscribedUnsafe else Nothing
1084− return (innerOcc, height, innerSubd)
1086−{-# SPECIALIZE readBehaviorUntracked :: Behavior a -> BehaviorM a #-}
1481+instance Show EventLoopException where
1087−{-# SPECIALIZE readBehaviorUntracked :: Behavior a -> EventM x a #-}
1482+ show (EventLoopException stacks) = "causality loop detected:\n" <> if null stacks
1088−readBehaviorUntracked :: Defer SomeHoldInit m => Behavior a -> m a
1483+ then "no location information, compile with profiling enabled for stack tree"
1089−readBehaviorUntracked b = do
1484+ else showStacks stacks
1090− holdInits <- getDeferralQueue
1485+
1091− liftIO $ runBehaviorM (readBehaviorTracked b) Nothing holdInits --TODO: Specialize readBehaviorTracked to the Nothing and Just cases
1486+#else
1093−runBehaviorM :: BehaviorM a -> Maybe (Weak Invalidator, IORef [SomeBehaviorSubscribed]) -> IORef [SomeHoldInit] -> IO a
1488+data EventLoopException = EventLoopException
1094−runBehaviorM a mwi holdInits = runReaderT (unBehaviorM a) (mwi, holdInits)
1489+instance Exception EventLoopException
1096−askInvalidator :: BehaviorM (Maybe (Weak Invalidator))
1491+instance Show EventLoopException where
1097−askInvalidator = liftM (fmap fst . fst) $ BehaviorM ask
1492+ show EventLoopException = "causality loop detected: \n" <>
1493+ "compile reflex with flag 'debug-cycles' and compile with profiling enabled for stack tree"
1099−askParentsRef :: BehaviorM (Maybe (IORef [SomeBehaviorSubscribed]))
1495+#endif
1100−askParentsRef = liftM (fmap snd . fst) $ BehaviorM ask
1102−askBehaviorHoldInits :: BehaviorM (IORef [SomeHoldInit])
1103−askBehaviorHoldInits = liftM snd $ BehaviorM ask
1105−readBehaviorTracked :: Behavior a -> BehaviorM a
1498+{-# INLINE propagateSubscriberHold #-}
1106−readBehaviorTracked b = case b of
1499+propagateSubscriberHold :: forall x p. (HasSpiderTimeline x, Patch p) => Hold x p -> p -> EventM x ()
1107− BehaviorHold h -> readHoldTracked h
1500+propagateSubscriberHold h a = do
1108− BehaviorHoldIdentity h -> readHoldTracked h
1501+ {-# SCC "trace" #-} when debugPropagate $ traceM (Proxy :: Proxy x) $ liftIO $ do
1109− BehaviorConst a -> return a
1110− BehaviorPull p -> do
1111− val <- liftIO $ readIORef $ pullValue p
1502+ invalidators <- liftIO $ readIORef $ holdInvalidators h
1112− case val of
1503+ return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1113− Just subscribed -> do
1504+
1114− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
1505+ v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1115− askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
1506+ case {-# SCC "apply" #-} apply a v of
1116− liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
1117− return $ pullSubscribedValue subscribed
1118− Nothing -> do
1507+ Nothing -> return ()
1119− i <- liftIO $ newInvalidatorPull p
1508+ Just v' -> do
1120− wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
1509+ {-# SCC "trace2" #-} withIncreasedDepth (Proxy :: Proxy x) $
1121− parentsRef <- liftIO $ newIORef []
1510+ tracePropagate (Proxy :: Proxy x) ("propagateSubscriberHold: assigning Hold" <> showNodeId h)
1122− holdInits <- askBehaviorHoldInits
1511+ vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1123− a <- liftIO $ runReaderT (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
1512+ iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1124− invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
1513+ defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
1125− parents <- liftIO $ readIORef parentsRef
1126− let subscribed = PullSubscribed
1127− { pullSubscribedValue = a
1128− , pullSubscribedInvalidators = invsRef
1129− , pullSubscribedOwnInvalidator = i
1130− , pullSubscribedParents = parents
1132− liftIO $ writeIORef (pullValue p) $! Just subscribed
1133− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
1135− BehaviorDyn d -> readHoldTracked =<< getDynHold d
1136− BehaviorDynIdentity d -> readHoldTracked =<< getDynHold d
1138−{-# INLINE readHoldTracked #-}
1515+data SomeResetCoincidence x = forall a. SomeResetCoincidence !(EventSubscription x) !(Maybe (CoincidenceSubscribed x a)) -- The CoincidenceSubscriber will be present only if heights need to be reset
1139−readHoldTracked :: Hold p a -> BehaviorM a
1516+
1140−readHoldTracked h = do
1517+runBehaviorM :: BehaviorM x a -> Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]) -> IORef [SomeHoldInit x] -> IO a
1141− result <- liftIO $ readIORef $ holdValue h
1518+runBehaviorM a mwi holdInits = runReaderIO (unBehaviorM a) (mwi, holdInits)
1142− askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
1519+
1143− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedHold h) :))
1520+askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
1524+ Nothing -> return Nothing
1525+ Just (!wi, _) -> return $ Just wi
1527+askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
1531+ Nothing -> return Nothing
1532+ Just (_, !p) -> return $ Just p
1534+askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
1535+askBehaviorHoldInits = do
1144− return result
1537+ return his
1146{-# INLINE getDynHold #-}
1539{-# INLINE getDynHold #-}
1147−getDynHold :: (Defer SomeHoldInit m, R.Patch p) => Dyn p a -> m (Hold p a)
1540+getDynHold :: (Defer (SomeHoldInit x) m, Patch p) => Dyn x p -> m (Hold x p)
1148getDynHold d = do
1541getDynHold d = do
1149 mh <- liftIO $ readIORef $ unDyn d
1542 mh <- liftIO $ readIORef $ unDyn d
1150 case mh of
1543 case mh of
1151− Right h -> return h
1544+ HoldDyn h -> return h
1152− Left (readV0, v') -> do
1545+ UnsafeDyn (readV0, v') -> do
1153 holdInits <- getDeferralQueue
1546 holdInits <- getDeferralQueue
1154 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1547 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1549+ BuildDyn (readV0, v') -> do
1550+ v0 <- liftIO $ runEventM readV0
1155 h <- hold v0 v'
1554 h <- hold v0 v'
1156− liftIO $ writeIORef (unDyn d) $! Right h
1555+ liftIO $ writeIORef (unDyn d) $ HoldDyn h
1157 return h
1556 return h
1160−readEvent :: Event a -> ResultM (Maybe a)
1161−readEvent e = case e of
1162− EventRoot k r -> liftIO . liftM (coerce . DMap.lookup k) . readIORef $ rootOccurrence r
1163− EventNever -> return Nothing
1165− subscribed <- getPushSubscribed p
1166− liftIO $ readPushSubscribed subscribed
1168− subscribed <- getMergeSubscribed m
1169− liftIO $ readMergeSubscribed subscribed
1171− subscribed <- getFanSubscribed f
1172− liftIO $ readFanSubscribed k subscribed
1173− EventSwitch s -> do
1174− subscribed <- getSwitchSubscribed s
1175− liftIO $ readSwitchSubscribed subscribed
1176− EventCoincidence c -> do
1177− subscribed <- getCoincidenceSubscribed c
1178− liftIO $ readCoincidenceSubscribed subscribed
1179− EventHold h -> liftIO . readEventSubscribed =<< getHoldEventSubscription h
1180− EventDyn d -> liftIO . readEventSubscribed =<< getHoldEventSubscription =<< getDynHold d
1181− EventHoldIdentity h -> liftIO . readEventSubscribed =<< getHoldEventSubscription h
1182− EventDynIdentity d -> liftIO . readEventSubscribed =<< getHoldEventSubscription =<< getDynHold d
1185−readEventSubscribed :: EventSubscribed a -> IO (Maybe a)
1186−readEventSubscribed = \case
1187− EventSubscribedRoot rs -> readRootSubscribed rs
1188− EventSubscribedNever -> return Nothing
1189− EventSubscribedPush ps -> readPushSubscribed ps
1190− EventSubscribedMerge ms -> readMergeSubscribed ms
1191− EventSubscribedFan k fs -> readFanSubscribed k fs
1192− EventSubscribedSwitch ss -> readSwitchSubscribed ss
1193− EventSubscribedCoincidence cs -> readCoincidenceSubscribed cs
1195−readRootSubscribed :: RootSubscribed a -> IO (Maybe a)
1196−readRootSubscribed = rootSubscribedOccurrence
1198−readPushSubscribed :: PushSubscribed b a -> IO (Maybe a)
1199−readPushSubscribed subscribed = do
1200− result <- readIORef $ pushSubscribedOccurrence subscribed -- Since ResultM is always called after the final height is reached, this will always be valid
1201− touch $ pushSubscribedSelf subscribed
1204−readMergeSubscribed :: MergeSubscribed k -> IO (Maybe (DMap k Identity))
1205−readMergeSubscribed subscribed = do
1206− result <- readIORef $ mergeSubscribedOccurrence subscribed
1207− touch $ mergeSubscribedParents subscribed
1210−readFanSubscribed :: GCompare k => k a -> FanSubscribed k -> IO (Maybe a)
1211−readFanSubscribed k fs = do
1212− parentOcc <- readEventSubscribed $ _eventSubscription_subscribed $ fanSubscribedParent fs
1213− return $ coerce $ DMap.lookup k =<< parentOcc
1215−readSwitchSubscribed :: SwitchSubscribed a -> IO (Maybe a)
1216−readSwitchSubscribed subscribed = do
1217− result <- readIORef $ switchSubscribedOccurrence subscribed
1218− touch $ switchSubscribedOwnInvalidator subscribed
1221−readCoincidenceSubscribed :: CoincidenceSubscribed a -> IO (Maybe a)
1222−readCoincidenceSubscribed subscribed = do
1223− result <- readIORef $ coincidenceSubscribedOccurrence subscribed
1224− touch $ coincidenceSubscribedOuter subscribed
1225− --TODO: do we need to touch the inner subscriber?
1228-- Always refers to 0
1559-- Always refers to 0
1229{-# NOINLINE zeroRef #-}
1560{-# NOINLINE zeroRef #-}
1230zeroRef :: IORef Height
1561zeroRef :: IORef Height
1231zeroRef = unsafePerformIO $ newIORef zeroHeight
1562zeroRef = unsafePerformIO $ newIORef zeroHeight
1233−{-# SPECIALIZE subscribe :: Event a -> Subscriber a -> EventM x (EventSubscription a) #-}
1234−subscribe :: forall x m a. CanSubscribe x m => Event a -> Subscriber a -> m (EventSubscription a)
1235−subscribe e sub = case e of
1236− EventRoot k r -> wrap EventSubscribedRoot $ liftIO . getRootSubscribed k r
1237− EventNever -> return $ EventSubscription Nothing EventSubscribedNever
1238− EventPush p -> wrap EventSubscribedPush $ getPushSubscribed p
1239− EventFan k f -> wrap (EventSubscribedFan k) $ getFanSubscribed k f
1240− EventMerge m -> wrap EventSubscribedMerge $ getMergeSubscribed m
1241− EventSwitch s -> wrap EventSubscribedSwitch $ getSwitchSubscribed s
1242− EventCoincidence c -> wrap EventSubscribedCoincidence $ getCoincidenceSubscribed c
1243− EventHold h -> subscribeHoldEvent h sub
1244− EventDyn j -> getDynHold j >>= \h -> subscribeHoldEvent h sub
1245− EventHoldIdentity h -> subscribeHoldEvent h sub
1246− EventDynIdentity j -> getDynHold j >>= \h -> subscribeHoldEvent h sub
1248− wrap :: (t -> EventSubscribed a) -> (Subscriber a -> m (SubscriberListTicket a, t)) -> m (EventSubscription a)
1249− wrap tag getSpecificSubscribed = do
1250− (sln, subd) <- getSpecificSubscribed sub
1251− return $ EventSubscription (Just sln) $ tag subd
1253−{-# INLINE subscribeHoldEvent #-}
1254−subscribeHoldEvent :: (CanSubscribe x m, R.Patch p) => Hold p a -> Subscriber (p a) -> m (EventSubscription (p a))
1255−subscribeHoldEvent h sub = do
1256− EventSubscription _ subd <- getHoldEventSubscription h
1257− sln <- liftIO $ subscribeEventSubscribed subd sub
1258− return $ EventSubscription sln subd
1260−{-# INLINE debugSubscribe #-}
1261−debugSubscribe :: Bool
1262−debugSubscribe = False
1264−{-# INLINE subscribeEventSubscribed #-}
1265−subscribeEventSubscribed :: EventSubscribed a -> Subscriber a -> IO (Maybe (SubscriberListTicket a))
1266−subscribeEventSubscribed es sub = case es of
1267− EventSubscribedRoot r -> do
1268− traceSubscribe $ "subscribeEventSubscribed Root"
1269− fmap Just $ subscribeRootSubscribed r sub
1270− EventSubscribedNever -> do
1271− traceSubscribe $ "subscribeEventSubscribed Never"
1273− EventSubscribedPush subscribed -> do
1274− traceSubscribe $ "subscribeEventSubscribed Push"
1275− fmap Just $ subscribePushSubscribed subscribed sub
1276− EventSubscribedFan k subscribed -> do
1277− traceSubscribe $ "subscribeEventSubscribed Fan"
1278− fmap Just $ subscribeFanSubscribed k subscribed sub
1279− EventSubscribedMerge subscribed -> do
1280− traceSubscribe $ "subscribeEventSubscribed Merge"
1281− fmap Just $ subscribeMergeSubscribed subscribed sub
1282− EventSubscribedSwitch subscribed -> do
1283− traceSubscribe $ "subscribeEventSubscribed Switch"
1284− fmap Just $ subscribeSwitchSubscribed subscribed sub
1285− EventSubscribedCoincidence subscribed -> do
1286− traceSubscribe $ "subscribeEventSubscribed Coincidence"
1287− fmap Just $ subscribeCoincidenceSubscribed subscribed sub
1289−{-# INLINE eventSubscribedHeightRef #-}
1290−eventSubscribedHeightRef :: EventSubscribed a -> IORef Height
1291−eventSubscribedHeightRef = \case
1292− EventSubscribedRoot _ -> zeroRef
1293− EventSubscribedNever -> zeroRef
1294− EventSubscribedPush subscribed -> pushSubscribedHeight subscribed
1295− EventSubscribedFan _ subscribed -> eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
1296− EventSubscribedMerge subscribed -> mergeSubscribedHeight subscribed
1297− EventSubscribedSwitch subscribed -> switchSubscribedHeight subscribed
1298− EventSubscribedCoincidence subscribed -> coincidenceSubscribedHeight subscribed
1300−{-# INLINE eventSubscribedHasOwnHeightRef #-}
1301−eventSubscribedHasOwnHeightRef :: EventSubscribed a -> Bool
1302−eventSubscribedHasOwnHeightRef = \case
1303− EventSubscribedRoot _ -> False
1304− EventSubscribedNever -> False
1305− EventSubscribedPush _ -> False
1306− EventSubscribedFan _ _ -> False
1307− EventSubscribedMerge _ -> True
1308− EventSubscribedSwitch _ -> True
1309− EventSubscribedCoincidence _ -> True
1311−{-# INLINE eventSubscribedGetParents #-}
1312−eventSubscribedGetParents :: EventSubscribed a -> IO [Some EventSubscribed]
1313−eventSubscribedGetParents = \case
1314− EventSubscribedRoot _ -> return []
1315− EventSubscribedNever -> return []
1316− EventSubscribedPush subscribed -> return [Some.This $ _eventSubscription_subscribed $ pushSubscribedParent subscribed]
1317− EventSubscribedFan _ subscribed -> return [Some.This $ _eventSubscription_subscribed $ fanSubscribedParent subscribed]
1318− EventSubscribedMerge subscribed -> do
1319− ps <- readIORef $ mergeSubscribedParents subscribed
1320− return $ fmap (\(_ :=> v) -> Some.This $ _eventSubscription_subscribed $ mergeSubscribedParentSubscription v) $ DMap.toList ps
1321− EventSubscribedSwitch subscribed -> do
1322− s <- readIORef $ switchSubscribedCurrentParent subscribed
1323− return [Some.This $ _eventSubscription_subscribed s]
1324− EventSubscribedCoincidence subscribed -> do
1325− innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
1326− let outerParent = Some.This $ _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
1327− innerParents = maybeToList $ fmap Some.This innerSubscription
1328− return $ outerParent : innerParents
1330−type CanSubscribe x m =
1332− , HasCurrentHeight m
1333− , Defer SomeHoldInit m, Defer SomeMergeInit m -- The things we need to lazily initialize state
1334− , Defer SomeClear m -- Wiping out event firings
1335− , Defer SomeAssignment m -- Updating state
1336− , Defer SomeResetCoincidence m
1339−getRootSubscribed :: GCompare k => k a -> Root k -> Subscriber a -> IO (SubscriberListTicket a, RootSubscribed a)
1564+getRootSubscribed :: forall k x a. (GCompare k, HasSpiderTimeline x) => k a -> Root x k -> Subscriber x a -> IO (WeakBagTicket, RootSubscribed x a, Maybe a)
1340getRootSubscribed k r sub = do
1565getRootSubscribed k r sub = do
1341 mSubscribed <- readIORef $ rootSubscribed r
1566 mSubscribed <- readIORef $ rootSubscribed r
1567+ let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
1342 case DMap.lookup k mSubscribed of
1568 case DMap.lookup k mSubscribed of
1343 Just subscribed -> {-# SCC "hitRoot" #-} do
1569 Just subscribed -> {-# SCC "hitRoot" #-} do
1344 sln <- subscribeRootSubscribed subscribed sub
1570 sln <- subscribeRootSubscribed subscribed sub
1345− return (sln, subscribed)
1572+ return (sln, subscribed, occ)
1346 Nothing -> {-# SCC "missRoot" #-} do
1573 Nothing -> {-# SCC "missRoot" #-} do
1347 weakSelf <- newIORef $ error "getRootSubscribed: weakSelfRef not initialized"
1574 weakSelf <- newIORef $ error "getRootSubscribed: weakSelfRef not initialized"
1348 let !cached = rootSubscribed r
1575 let !cached = rootSubscribed r
1349 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1576 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1350 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1577 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1351− when debugPropagate $ putStrLn $ "getRootSubscribed: calling rootInit"
1579+ tracePropagate (Proxy::Proxy x) $ "getRootSubscribed: calling rootInit"
1352 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1581 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1353 writeIORef uninitRef $! uninit
1582 writeIORef uninitRef $! uninit
1583+#ifdef DEBUG_NODEIDS
1354− let subscribed = RootSubscribed
1586+ let !subscribed = RootSubscribed
1355 { rootSubscribedKey = k
1587 { rootSubscribedKey = k
1356 , rootSubscribedCachedSubscribed = cached
1588 , rootSubscribedCachedSubscribed = cached
1357− , rootSubscribedOccurrence = liftM (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
1589+ , rootSubscribedOccurrence = getOcc
1358 , rootSubscribedSubscribers = subs
1590 , rootSubscribedSubscribers = subs
1359 , rootSubscribedUninit = uninit
1591 , rootSubscribedUninit = uninit
1360 , rootSubscribedWeakSelf = weakSelf
1592 , rootSubscribedWeakSelf = weakSelf
1361#ifdef DEBUG_NODEIDS
1593#ifdef DEBUG_NODEIDS
1362− , rootSubscribedNodeId = unsafeNodeId (k, r, subs)
1594+ , rootSubscribedNodeId = nid
1597+ -- If we die at the same moment that all our children die, they will
1598+ -- try to clean us up but will fail because their Weak reference to us
1599+ -- will also be dead. So, if we are dying, check if there are any
1600+ -- children; since children don't bother cleaning themselves up if
1601+ -- their parents are already dead, I don't think there's a race
1602+ -- condition here. However, if there are any children, then we can
1603+ -- infer that we need to clean ourselves up, so we do.
1605+ cs <- readIORef $ _weakBag_children subs
1606+ when (not $ IntMap.null cs) (cleanupRootSubscribed subscribed)
1365− writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "RootSubscribed"
1607+ writeIORef weakSelf =<< evaluate =<< mkWeakPtr subscribed (Just finalCleanup)
1366 modifyIORef' (rootSubscribed r) $ DMap.insertWith (error $ "getRootSubscribed: duplicate key inserted into Root") k subscribed --TODO: I think we can just write back mSubscribed rather than re-reading it
1608 modifyIORef' (rootSubscribed r) $ DMap.insertWith (error $ "getRootSubscribed: duplicate key inserted into Root") k subscribed --TODO: I think we can just write back mSubscribed rather than re-reading it
1367− return (sln, subscribed)
1610+ return (sln, subscribed, occ)
1612+#ifdef USE_TEMPLATE_HASKELL
1613+{-# ANN cleanupRootSubscribed "HLint: ignore Redundant bracket" #-}
1369−cleanupRootSubscribed :: RootSubscribed a -> IO ()
1615+cleanupRootSubscribed :: RootSubscribed x a -> IO ()
1370−cleanupRootSubscribed self@(RootSubscribed { rootSubscribedKey = k, rootSubscribedCachedSubscribed = cached }) = do
1616+cleanupRootSubscribed self@RootSubscribed { rootSubscribedKey = k, rootSubscribedCachedSubscribed = cached } = do
1371 rootSubscribedUninit self
1617 rootSubscribedUninit self
1372 modifyIORef' cached $ DMap.delete k
1618 modifyIORef' cached $ DMap.delete k
1374{-# INLINE subscribeRootSubscribed #-}
1620{-# INLINE subscribeRootSubscribed #-}
1375−subscribeRootSubscribed :: RootSubscribed a -> Subscriber a -> IO (SubscriberListTicket a)
1621+subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1376subscribeRootSubscribed subscribed sub = WeakBag.insert sub (rootSubscribedSubscribers subscribed) (rootSubscribedWeakSelf subscribed) cleanupRootSubscribed
1622subscribeRootSubscribed subscribed sub = WeakBag.insert sub (rootSubscribedSubscribers subscribed) (rootSubscribedWeakSelf subscribed) cleanupRootSubscribed
1378−-- When getPushSubscribed returns, the PushSubscribed returned will have a fully filled-in
1624+newtype EventSelectorInt x a = EventSelectorInt { selectInt :: Int -> Event x a }
1379−{-# SPECIALIZE getPushSubscribed :: Push a b -> Subscriber b -> EventM x (SubscriberListTicket b, PushSubscribed a b) #-}
1625+
1380−getPushSubscribed :: CanSubscribe x m => Push a b -> Subscriber b -> m (SubscriberListTicket b, PushSubscribed a b)
1626+data FanInt x a = FanInt
1381−getPushSubscribed p sub = do
1627+ { _fanInt_subscribers :: {-# UNPACK #-} !(FastMutableIntMap (FastWeakBag (Subscriber x a))) --TODO: Clean up the keys in here when their child weak bags get empty --TODO: Remove our own subscription when the subscribers list is completely empty
1382− mSubscribed <- liftIO $ readIORef $ pushSubscribed p
1628+ , _fanInt_subscriptionRef :: {-# UNPACK #-} !(IORef (EventSubscription x)) -- This should have a valid subscription iff subscribers is non-empty
1383− case mSubscribed of
1629+ , _fanInt_occRef :: {-# UNPACK #-} !(IORef (IntMap a))
1384− Just subscribed -> {-# SCC "hitPush" #-} do
1385− sln <- liftIO $ subscribePushSubscribed subscribed sub
1386− return (sln, subscribed)
1387− Nothing -> {-# SCC "missPush" #-} do -- Not yet subscribed
1388− subscribedRef <- liftIO $ newIORef $ error "getPushSubscribed: subscribed not yet intialized"
1389− subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1390− s <- liftIO $ newSubscriberPush (pushCompute p) subscribedUnsafe
1391− subscription@(EventSubscription _ subd) <- subscribe (pushParent p) s
1392− parentOcc <- liftIO $ readEventSubscribed subd
1393− occ <- runComputeM $ liftM join $ mapM (pushCompute p) parentOcc
1394− occRef <- liftIO $ newIORef occ
1395− when (isJust occ) $ scheduleClear occRef
1396− weakSelf <- liftIO $ newIORef $ error "getPushSubscribed: weakSelf not initialized"
1397− let !cached = pushSubscribed p
1398− (subs, sln) <- liftIO $ WeakBag.singleton sub weakSelf cleanupPushSubscribed
1399− let subscribed = PushSubscribed
1400− { pushSubscribedCachedSubscribed = cached
1401− , pushSubscribedOccurrence = occRef
1402− , pushSubscribedHeight = eventSubscribedHeightRef subd -- Since pushes have the same height as their parents, share the ref
1403− , pushSubscribedSubscribers = subs
1404− , pushSubscribedSelf = s
1405− , pushSubscribedWeakSelf = weakSelf
1406− , pushSubscribedParent = subscription
1407#ifdef DEBUG_NODEIDS
1630#ifdef DEBUG_NODEIDS
1408− , pushSubscribedNodeId = unsafeNodeId p
1631+ , _fanInt_nodeId :: {-# UNPACK #-} !Int
1411− liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "PushSubscribed"
1634+
1412− liftIO $ writeIORef subscribedRef $! subscribed
1635+newFanInt :: IO (FanInt x a)
1413− liftIO $ writeIORef (pushSubscribed p) $! Just subscribed
1636+newFanInt = do
1414− return (sln, subscribed)
1637+ subscribers <- FastMutableIntMap.newEmpty --TODO: Clean up the keys in here when their child weak bags get empty --TODO: Remove our own subscription when the subscribers list is completely empty
1415−
1638+ subscriptionRef <- newIORef $ error "fanInt: no subscription"
1416−cleanupPushSubscribed :: PushSubscribed a b -> IO ()
1639+ occRef <- newIORef $ error "fanInt: no occurrence"
1417−cleanupPushSubscribed self = do
1418− unsubscribe $ pushSubscribedParent self
1419− writeIORef (pushSubscribedCachedSubscribed self) $! Nothing
1421−{-# INLINE subscribePushSubscribed #-}
1422−subscribePushSubscribed :: PushSubscribed a b -> Subscriber b -> IO (SubscriberListTicket b)
1423−subscribePushSubscribed subscribed sub = WeakBag.insert sub (pushSubscribedSubscribers subscribed) (pushSubscribedWeakSelf subscribed) cleanupPushSubscribed
1425−{-# SPECIALIZE getMergeSubscribed :: GCompare k => Merge k -> Subscriber (DMap k Identity) -> EventM x (SubscriberListTicket (DMap k Identity), MergeSubscribed k) #-}
1426−getMergeSubscribed :: forall x k m. (CanSubscribe x m, GCompare k) => Merge k -> Subscriber (DMap k Identity) -> m (SubscriberListTicket (DMap k Identity), MergeSubscribed k)
1427−getMergeSubscribed m sub = do
1428− mSubscribed <- liftIO $ readIORef $ mergeSubscribed m
1429− case mSubscribed of
1430− Just subscribed -> {-# SCC "hitMerge" #-} do
1431− sln <- liftIO $ subscribeMergeSubscribed subscribed sub
1432− return (sln, subscribed)
1433− Nothing -> {-# SCC "missMerge" #-} do
1434− subscribedRef <- liftIO $ newIORef $ error "getMergeSubscribed: subscribedRef not yet initialized"
1435− subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1436− initialParents <- readBehaviorUntracked $ current $ mergeParents m
1437− subscribers :: [(Maybe (DSum k Identity), Height, DSum k (MergeSubscribedParent k))] <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
1438− s <- liftIO $ newSubscriberMerge k subscribedUnsafe
1439− subscription@(EventSubscription _ parentSubd) <- subscribe e s
1440− parentOcc <- liftIO $ readEventSubscribed parentSubd
1441− height <- liftIO $ readIORef $ eventSubscribedHeightRef parentSubd
1442− return $ (fmap (\x -> k :=> Identity x) parentOcc, height, k :=> (MergeSubscribedParent subscription s))
1443− let dm = DMap.fromDistinctAscList $ catMaybes $ map (\(x, _, _) -> x) subscribers
1444− heights = fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1445− myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
1446− myHeight = if any (== invalidHeight) heights
1448− else succHeight $ heightBagMax myHeightBag
1449− currentHeight <- getCurrentHeight
1450− let (occ, accum) = if currentHeight >= myHeight -- If we should have fired by now
1451− then (if DMap.null dm then Nothing else Just dm, DMap.empty)
1453− when (not $ DMap.null accum) $ do
1454− scheduleMerge myHeight subscribedUnsafe
1455− occRef <- liftIO $ newIORef occ
1456− when (isJust occ) $ scheduleClear occRef
1457− accumRef <- liftIO $ newIORef accum
1458− heightRef <- liftIO $ newIORef myHeight
1459− heightMapRef <- liftIO $ newIORef myHeightBag
1460− weakSelf <- liftIO $ newIORef $ error "getMergeSubscribed: weakSelf not yet initialized"
1461− (subs, sln) <- liftIO $ WeakBag.singleton sub weakSelf cleanupMergeSubscribed
1462− changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
1463− parentsRef <- liftIO $ newIORef $ DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
1464− let !subscribed = MergeSubscribed
1465− { mergeSubscribedCachedSubscribed = mergeSubscribed m
1466− , mergeSubscribedOccurrence = occRef
1467− , mergeSubscribedAccum = accumRef
1468− , mergeSubscribedHeight = heightRef
1469− , mergeSubscribedHeightBag = heightMapRef
1470− , mergeSubscribedSubscribers = subs
1471− , mergeSubscribedChange = changeSubdRef
1472− , mergeSubscribedParents = parentsRef
1473− , mergeSubscribedWeakSelf = weakSelf
1474#ifdef DEBUG_NODEIDS
1640#ifdef DEBUG_NODEIDS
1475− , mergeSubscribedNodeId = unsafeNodeId m
1641+ nodeId <- newNodeId
1477− }
1643+ return $ FanInt
1478− defer $ SomeMergeInit subscribed $ updated $ mergeParents m
1644+ { _fanInt_subscribers = subscribers
1479− liftIO $ writeIORef subscribedRef $! subscribed
1645+ , _fanInt_subscriptionRef = subscriptionRef
1480− liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "MergeSubscribed"
1646+ , _fanInt_occRef = occRef
1481− liftIO $ writeIORef (mergeSubscribed m) $! Just subscribed
1647+#ifdef DEBUG_NODEIDS
1482− return (sln, subscribed)
1648+ , _fanInt_nodeId = nodeId
1484−cleanupMergeSubscribed :: MergeSubscribed k -> IO ()
1650+ }
1485−cleanupMergeSubscribed subscribed = do
1651+
1486− parents <- readIORef $ mergeSubscribedParents subscribed
1652+fanInt :: HasSpiderTimeline x => Event x (IntMap a) -> EventSelectorInt x a
1487− forM_ (DMap.toList parents) $ \(_ :=> msp) -> unsubscribe $ mergeSubscribedParentSubscription msp
1653+fanInt p = unsafePerformIO $ do
1488− -- Not necessary, because this whole MergeSubscribed is dead: writeIORef (mergeSubscribedParents subscribed) DMap.empty
1654+ self <- newFanInt
1489− writeIORef (mergeSubscribedCachedSubscribed subscribed) $! Nothing -- Get rid of the cached subscribed
1655+ pure $ EventSelectorInt $ \k -> Event $ \sub -> do
1490−
1656+ isEmpty <- liftIO $ FastMutableIntMap.isEmpty (_fanInt_subscribers self)
1491−{-# INLINE subscribeMergeSubscribed #-}
1657+ when isEmpty $ do -- This is the first subscriber, so we need to subscribe to our input
1492−subscribeMergeSubscribed :: MergeSubscribed k -> Subscriber (DMap k Identity) -> IO (SubscriberListTicket (DMap k Identity))
1658+ let desc = "fanInt" <> showNodeId self <> ", k = " <> show k
1493−subscribeMergeSubscribed subscribed sub = WeakBag.insert sub (mergeSubscribedSubscribers subscribed) (mergeSubscribedWeakSelf subscribed) cleanupMergeSubscribed
1659+ (subscription, parentOcc) <- subscribeAndRead p $ debugSubscriber' desc $ Subscriber
1494−
1660+ { subscriberPropagate = \m -> do
1661+ liftIO $ writeIORef (_fanInt_occRef self) m
1662+ scheduleIntClear $ _fanInt_occRef self
1663+ FastMutableIntMap.forIntersectionWithImmutable_ (_fanInt_subscribers self) m $ \b v -> --TODO: Do we need to know that no subscribers are being added as we traverse?
1664+ FastWeakBag.traverse_ b $ \s ->
1665+ subscriberPropagate s v
1666+ , subscriberInvalidateHeight = \old ->
1667+ FastMutableIntMap.for_ (_fanInt_subscribers self) $ \b ->
1668+ FastWeakBag.traverse_ b $ \s ->
1669+ subscriberInvalidateHeight s old
1670+ , subscriberRecalculateHeight = \new ->
1671+ FastMutableIntMap.for_ (_fanInt_subscribers self) $ \b ->
1672+ FastWeakBag.traverse_ b $ \s ->
1673+ subscriberRecalculateHeight s new
1676+ writeIORef (_fanInt_subscriptionRef self) subscription
1677+ writeIORef (_fanInt_occRef self) $ fromMaybe IntMap.empty parentOcc
1678+ scheduleIntClear $ _fanInt_occRef self
1680+ b <- FastMutableIntMap.lookup (_fanInt_subscribers self) k >>= \case
1682+ b <- FastWeakBag.empty
1683+ FastMutableIntMap.insert (_fanInt_subscribers self) k b
1686+ ticket <- liftIO $ FastWeakBag.insert sub b
1687+ currentOcc <- readIORef (_fanInt_occRef self)
1689+ subscribed <- fanIntSubscribed ticket self
1690+ return (EventSubscription (FastWeakBag.remove ticket) subscribed, IntMap.lookup k currentOcc)
1692+fanIntSubscribed :: FastWeakBagTicket k -> FanInt x a -> IO (EventSubscribed x)
1693+fanIntSubscribed ticket self = do
1694+ subscribedParent <- _eventSubscription_subscribed <$> readIORef (_fanInt_subscriptionRef self)
1695+ return $ EventSubscribed
1696+ { eventSubscribedHeightRef = eventSubscribedHeightRef subscribedParent
1697+ , eventSubscribedRetained = toAny (_fanInt_subscriptionRef self, ticket)
1699+ , eventSubscribedGetParents = return [subscribedParent]
1700+ , eventSubscribedHasOwnHeightRef = False
1701+ , eventSubscribedWhoCreated = whoCreatedIORef $ _fanInt_subscriptionRef self
1706+{-# INLINABLE getFanSubscribed #-}
1495−{-# SPECIALIZE getFanSubscribed :: GCompare k => k a -> Fan k -> Subscriber a -> EventM x (SubscriberListTicket a, FanSubscribed k) #-}
1707+getFanSubscribed :: (HasSpiderTimeline x, GCompare k) => k a -> Fan x k v -> Subscriber x (v a) -> EventM x (WeakBagTicket, FanSubscribed x k v, Maybe (v a))
1496−getFanSubscribed :: (Defer SomeAssignment m, Defer SomeHoldInit m, Defer SomeMergeInit m, Defer SomeClear m, HasCurrentHeight m, Defer SomeResetCoincidence m, HasSpiderEnv x m, GCompare k) => k a -> Fan k -> Subscriber a -> m (SubscriberListTicket a, FanSubscribed k)
1497getFanSubscribed k f sub = do
1708getFanSubscribed k f sub = do
1498 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1709 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1499 case mSubscribed of
1710 case mSubscribed of
1500− Just subscribed -> {-# SCC "hitFan" #-} do
1711+ Just subscribed -> {-# SCC "hitFan" #-} liftIO $ do
1501− sln <- liftIO $ subscribeFanSubscribed k subscribed sub
1712+ sln <- subscribeFanSubscribed k subscribed sub
1713+ occ <- readIORef $ fanSubscribedOccurrence subscribed
1502− return (sln, subscribed)
1714+ return (sln, subscribed, coerce $ DMap.lookup k =<< occ)
1503 Nothing -> {-# SCC "missFan" #-} do
1715 Nothing -> {-# SCC "missFan" #-} do
1504 subscribedRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribedRef not yet initialized"
1716 subscribedRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribedRef not yet initialized"
1505 subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1717 subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1506 s <- liftIO $ newSubscriberFan subscribedUnsafe
1718 s <- liftIO $ newSubscriberFan subscribedUnsafe
1507− subscription <- subscribe (fanParent f) s
1719+ (subscription, parentOcc) <- subscribeAndRead (fanParent f) s
1508 weakSelf <- liftIO $ newIORef $ error "getFanSubscribed: weakSelf not yet initialized"
1720 weakSelf <- liftIO $ newIORef $ error "getFanSubscribed: weakSelf not yet initialized"
1509 (subsForK, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupFanSubscribed
1721 (subsForK, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupFanSubscribed
1510 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1722 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1723+ occRef <- liftIO $ newIORef parentOcc
1724+ when (isJust parentOcc) $ scheduleClear occRef
1725+#ifdef DEBUG_NODEIDS
1726+ nid <- liftIO newNodeId
1511 let subscribed = FanSubscribed
1728 let subscribed = FanSubscribed
1512 { fanSubscribedCachedSubscribed = fanSubscribed f
1729 { fanSubscribedCachedSubscribed = fanSubscribed f
1730+ , fanSubscribedOccurrence = occRef
1513 , fanSubscribedParent = subscription
1731 , fanSubscribedParent = subscription
1514 , fanSubscribedSubscribers = subscribersRef
1732 , fanSubscribedSubscribers = subscribersRef
1515#ifdef DEBUG_NODEIDS
1733#ifdef DEBUG_NODEIDS
1516− , fanSubscribedNodeId = unsafeNodeId f
1734+ , fanSubscribedNodeId = nid
1519 let !self = (k, subscribed)
1737 let !self = (k, subscribed)
1520 liftIO $ writeIORef subscribersRef $! DMap.singleton k $ FanSubscribedChildren subsForK self weakSelf
1738 liftIO $ writeIORef subscribersRef $! DMap.singleton k $ FanSubscribedChildren subsForK self weakSelf
1521 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug self "FanSubscribed"
1739 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug self "FanSubscribed"
1522 liftIO $ writeIORef subscribedRef $! subscribed
1740 liftIO $ writeIORef subscribedRef $! subscribed
1523− liftIO $ writeIORef (fanSubscribed f) $! Just subscribed
1741+ liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
1524− return (slnForSub, subscribed)
1742+ return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
1526−cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed k) -> IO ()
1744+cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k v) -> IO ()
1527cleanupFanSubscribed (k, subscribed) = do
1745cleanupFanSubscribed (k, subscribed) = do
1528 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1746 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1529 let reducedSubscribers = DMap.delete k subscribers
1747 let reducedSubscribers = DMap.delete k subscribers
@@ -1531,11 +1749,11 @@ cleanupFanSubscribed (k, subscribed) = do
1532 unsubscribe $ fanSubscribedParent subscribed
1750 unsubscribe $ fanSubscribedParent subscribed
1533 -- Not necessary in this case, because this whole FanSubscribed is dead: writeIORef (fanSubscribedSubscribers subscribed) reducedSubscribers
1751 -- Not necessary in this case, because this whole FanSubscribed is dead: writeIORef (fanSubscribedSubscribers subscribed) reducedSubscribers
1534− writeIORef (fanSubscribedCachedSubscribed subscribed) $! Nothing
1752+ writeIORef (fanSubscribedCachedSubscribed subscribed) Nothing
1535 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1753 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1537{-# INLINE subscribeFanSubscribed #-}
1755{-# INLINE subscribeFanSubscribed #-}
1538−subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed k -> Subscriber a -> IO (SubscriberListTicket a)
1756+subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed x k v -> Subscriber x (v a) -> IO WeakBagTicket
1539subscribeFanSubscribed k subscribed sub = do
1757subscribeFanSubscribed k subscribed sub = do
1540 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1758 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1541 case DMap.lookup k subscribers of
1759 case DMap.lookup k subscribers of
@@ -1543,18 +1761,19 @@ subscribeFanSubscribed k subscribed sub = do
1543 let !self = (k, subscribed)
1761 let !self = (k, subscribed)
1544 weakSelf <- newIORef =<< mkWeakPtrWithDebug self "FanSubscribed"
1762 weakSelf <- newIORef =<< mkWeakPtrWithDebug self "FanSubscribed"
1545 (list, sln) <- WeakBag.singleton sub weakSelf cleanupFanSubscribed
1763 (list, sln) <- WeakBag.singleton sub weakSelf cleanupFanSubscribed
1546− writeIORef (fanSubscribedSubscribers subscribed) $! DMap.insertWith (error "subscribeEventSubscribed: key that we just failed to find is present - should be impossible") k (FanSubscribedChildren list self weakSelf) subscribers
1764+ writeIORef (fanSubscribedSubscribers subscribed) $! DMap.insertWith (error "subscribeFanSubscribed: key that we just failed to find is present - should be impossible") k (FanSubscribedChildren list self weakSelf) subscribers
1547 return sln
1765 return sln
1548 Just (FanSubscribedChildren list _ weakSelf) -> {-# SCC "hitSubscribeFanSubscribed" #-} WeakBag.insert sub list weakSelf cleanupFanSubscribed
1766 Just (FanSubscribedChildren list _ weakSelf) -> {-# SCC "hitSubscribeFanSubscribed" #-} WeakBag.insert sub list weakSelf cleanupFanSubscribed
1550−{-# SPECIALIZE getSwitchSubscribed :: Switch a -> Subscriber a -> EventM x (SubscriberListTicket a, SwitchSubscribed a) #-}
1768+{-# INLINABLE getSwitchSubscribed #-}
1551−getSwitchSubscribed :: (Defer SomeHoldInit m, Defer SomeAssignment m, Defer SomeMergeInit m, Defer SomeClear m, Defer SomeResetCoincidence m, HasCurrentHeight m, HasSpiderEnv x m) => Switch a -> Subscriber a -> m (SubscriberListTicket a, SwitchSubscribed a)
1769+getSwitchSubscribed :: HasSpiderTimeline x => Switch x a -> Subscriber x a -> EventM x (WeakBagTicket, SwitchSubscribed x a, Maybe a)
1552getSwitchSubscribed s sub = do
1770getSwitchSubscribed s sub = do
1553 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1771 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1554 case mSubscribed of
1772 case mSubscribed of
1555− Just subscribed -> {-# SCC "hitSwitch" #-} do
1773+ Just subscribed -> {-# SCC "hitSwitch" #-} liftIO $ do
1556− sln <- liftIO $ subscribeSwitchSubscribed subscribed sub
1774+ sln <- subscribeSwitchSubscribed subscribed sub
1775+ occ <- readIORef $ switchSubscribedOccurrence subscribed
1557− return (sln, subscribed)
1776+ return (sln, subscribed, occ)
1558 Nothing -> {-# SCC "missSwitch" #-} do
1777 Nothing -> {-# SCC "missSwitch" #-} do
1559 subscribedRef <- liftIO $ newIORef $ error "getSwitchSubscribed: subscribed has not yet been created"
1778 subscribedRef <- liftIO $ newIORef $ error "getSwitchSubscribed: subscribed has not yet been created"
1560 subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1779 subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
@@ -1565,14 +1784,16 @@ getSwitchSubscribed s sub = do
1565 parentsRef <- liftIO $ newIORef [] --TODO: This should be unnecessary, because it will always be filled with just the single parent behavior
1784 parentsRef <- liftIO $ newIORef [] --TODO: This should be unnecessary, because it will always be filled with just the single parent behavior
1566 holdInits <- getDeferralQueue
1785 holdInits <- getDeferralQueue
1567 e <- liftIO $ runBehaviorM (readBehaviorTracked (switchParent s)) (Just (wi, parentsRef)) holdInits
1786 e <- liftIO $ runBehaviorM (readBehaviorTracked (switchParent s)) (Just (wi, parentsRef)) holdInits
1568− subscription@(EventSubscription _ subd) <- subscribe e mySub
1787+ (subscription@(EventSubscription _ subd), parentOcc) <- subscribeAndRead e mySub
1788+ heightRef <- liftIO $ newIORef =<< getEventSubscribedHeight subd
1569 subscriptionRef <- liftIO $ newIORef subscription
1789 subscriptionRef <- liftIO $ newIORef subscription
1570− parentOcc <- liftIO $ readEventSubscribed subd
1571 occRef <- liftIO $ newIORef parentOcc
1790 occRef <- liftIO $ newIORef parentOcc
1572 when (isJust parentOcc) $ scheduleClear occRef
1791 when (isJust parentOcc) $ scheduleClear occRef
1573− heightRef <- liftIO $ newIORef =<< readIORef (eventSubscribedHeightRef subd)
1574 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1792 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1575 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupSwitchSubscribed
1793 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupSwitchSubscribed
1794+#ifdef DEBUG_NODEIDS
1795+ nid <- liftIO newNodeId
1576 let !subscribed = SwitchSubscribed
1797 let !subscribed = SwitchSubscribed
1577 { switchSubscribedCachedSubscribed = switchSubscribed s
1798 { switchSubscribedCachedSubscribed = switchSubscribed s
1578 , switchSubscribedOccurrence = occRef
1799 , switchSubscribedOccurrence = occRef
@@ -1585,39 +1806,39 @@ getSwitchSubscribed s sub = do
1585 , switchSubscribedCurrentParent = subscriptionRef
1806 , switchSubscribedCurrentParent = subscriptionRef
1586 , switchSubscribedWeakSelf = weakSelf
1807 , switchSubscribedWeakSelf = weakSelf
1587#ifdef DEBUG_NODEIDS
1808#ifdef DEBUG_NODEIDS
1588− , switchSubscribedNodeId = unsafeNodeId s
1809+ , switchSubscribedNodeId = nid
1591 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
1812 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
1592 liftIO $ writeIORef subscribedRef $! subscribed
1813 liftIO $ writeIORef subscribedRef $! subscribed
1593− liftIO $ writeIORef (switchSubscribed s) $! Just subscribed
1814+ liftIO $ writeIORef (switchSubscribed s) $ Just subscribed
1594− return (slnForSub, subscribed)
1815+ return (slnForSub, subscribed, parentOcc)
1596−cleanupSwitchSubscribed :: SwitchSubscribed a -> IO ()
1817+cleanupSwitchSubscribed :: SwitchSubscribed x a -> IO ()
1597cleanupSwitchSubscribed subscribed = do
1818cleanupSwitchSubscribed subscribed = do
1598 unsubscribe =<< readIORef (switchSubscribedCurrentParent subscribed)
1819 unsubscribe =<< readIORef (switchSubscribedCurrentParent subscribed)
1599 finalize =<< readIORef (switchSubscribedOwnWeakInvalidator subscribed) -- We don't need to get invalidated if we're dead
1820 finalize =<< readIORef (switchSubscribedOwnWeakInvalidator subscribed) -- We don't need to get invalidated if we're dead
1600− writeIORef (switchSubscribedCachedSubscribed subscribed) $! Nothing
1821+ writeIORef (switchSubscribedCachedSubscribed subscribed) Nothing
1602{-# INLINE subscribeSwitchSubscribed #-}
1823{-# INLINE subscribeSwitchSubscribed #-}
1603−subscribeSwitchSubscribed :: SwitchSubscribed a -> Subscriber a -> IO (SubscriberListTicket a)
1824+subscribeSwitchSubscribed :: SwitchSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1604subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1825subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1606−{-# SPECIALIZE getCoincidenceSubscribed :: Coincidence a -> Subscriber a -> EventM x (SubscriberListTicket a, CoincidenceSubscribed a) #-}
1827+{-# INLINABLE getCoincidenceSubscribed #-}
1607−getCoincidenceSubscribed :: forall x a m. (Defer SomeAssignment m, Defer SomeHoldInit m, Defer SomeMergeInit m, Defer SomeClear m, HasCurrentHeight m, Defer SomeResetCoincidence m, HasSpiderEnv x m) => Coincidence a -> Subscriber a -> m (SubscriberListTicket a, CoincidenceSubscribed a)
1828+getCoincidenceSubscribed :: forall x a. HasSpiderTimeline x => Coincidence x a -> Subscriber x a -> EventM x (WeakBagTicket, CoincidenceSubscribed x a, Maybe a)
1608getCoincidenceSubscribed c sub = do
1829getCoincidenceSubscribed c sub = do
1609 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1830 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1610 case mSubscribed of
1831 case mSubscribed of
1611− Just subscribed -> {-# SCC "hitCoincidence" #-} do
1832+ Just subscribed -> {-# SCC "hitCoincidence" #-} liftIO $ do
1612− sln <- liftIO $ subscribeCoincidenceSubscribed subscribed sub
1833+ sln <- subscribeCoincidenceSubscribed subscribed sub
1834+ occ <- readIORef $ coincidenceSubscribedOccurrence subscribed
1613− return (sln, subscribed)
1835+ return (sln, subscribed, occ)
1614 Nothing -> {-# SCC "missCoincidence" #-} do
1836 Nothing -> {-# SCC "missCoincidence" #-} do
1615 subscribedRef <- liftIO $ newIORef $ error "getCoincidenceSubscribed: subscribed has not yet been created"
1837 subscribedRef <- liftIO $ newIORef $ error "getCoincidenceSubscribed: subscribed has not yet been created"
1616 subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1838 subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1617 subOuter <- liftIO $ newSubscriberCoincidenceOuter subscribedUnsafe
1839 subOuter <- liftIO $ newSubscriberCoincidenceOuter subscribedUnsafe
1618− outerSubscription@(EventSubscription _ outerSubd) <- subscribe (coincidenceParent c) subOuter
1840+ (outerSubscription@(EventSubscription _ outerSubd), outerOcc) <- subscribeAndRead (coincidenceParent c) subOuter
1619− outerOcc <- liftIO $ readEventSubscribed outerSubd
1620− outerHeight <- liftIO $ readIORef $ eventSubscribedHeightRef outerSubd
1841+ outerHeight <- liftIO $ getEventSubscribedHeight outerSubd
1621 (occ, height, mInnerSubd) <- case outerOcc of
1842 (occ, height, mInnerSubd) <- case outerOcc of
1622 Nothing -> return (Nothing, outerHeight, Nothing)
1843 Nothing -> return (Nothing, outerHeight, Nothing)
1623 Just o -> do
1844 Just o -> do
@@ -1630,6 +1851,9 @@ getCoincidenceSubscribed c sub = do
1630 scheduleClear innerSubdRef
1851 scheduleClear innerSubdRef
1631 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1852 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1632 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupCoincidenceSubscribed
1853 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupCoincidenceSubscribed
1854+#ifdef DEBUG_NODEIDS
1855+ nid <- liftIO newNodeId
1633 let subscribed = CoincidenceSubscribed
1857 let subscribed = CoincidenceSubscribed
1634 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1858 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1635 , coincidenceSubscribedOccurrence = occRef
1859 , coincidenceSubscribedOccurrence = occRef
@@ -1640,166 +1864,549 @@ getCoincidenceSubscribed c sub = do
1640 , coincidenceSubscribedInnerParent = innerSubdRef
1864 , coincidenceSubscribedInnerParent = innerSubdRef
1641 , coincidenceSubscribedWeakSelf = weakSelf
1865 , coincidenceSubscribedWeakSelf = weakSelf
1642#ifdef DEBUG_NODEIDS
1866#ifdef DEBUG_NODEIDS
1643− , coincidenceSubscribedNodeId = unsafeNodeId c
1867+ , coincidenceSubscribedNodeId = nid
1646 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
1870 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
1647 liftIO $ writeIORef subscribedRef $! subscribed
1871 liftIO $ writeIORef subscribedRef $! subscribed
1648− liftIO $ writeIORef (coincidenceSubscribed c) $! Just subscribed
1872+ liftIO $ writeIORef (coincidenceSubscribed c) $ Just subscribed
1649− return (slnForSub, subscribed)
1873+ return (slnForSub, subscribed, occ)
1651−cleanupCoincidenceSubscribed :: CoincidenceSubscribed a -> IO ()
1875+cleanupCoincidenceSubscribed :: CoincidenceSubscribed x a -> IO ()
1652cleanupCoincidenceSubscribed subscribed = do
1876cleanupCoincidenceSubscribed subscribed = do
1653 unsubscribe $ coincidenceSubscribedOuterParent subscribed
1877 unsubscribe $ coincidenceSubscribedOuterParent subscribed
1654− writeIORef (coincidenceSubscribedCachedSubscribed subscribed) $! Nothing
1878+ writeIORef (coincidenceSubscribedCachedSubscribed subscribed) Nothing
1656{-# INLINE subscribeCoincidenceSubscribed #-}
1880{-# INLINE subscribeCoincidenceSubscribed #-}
1657−subscribeCoincidenceSubscribed :: CoincidenceSubscribed a -> Subscriber a -> IO (SubscriberListTicket a)
1881+subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1658subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1882subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1660−{-# INLINE merge #-}
1884+{-# INLINE mergeG #-}
1661−merge :: GCompare k => Dynamic R.PatchDMap (DMap k Event) -> Event (DMap k Identity)
1885+mergeG :: forall k q x v. (HasSpiderTimeline x, GCompare k)
1662−merge m = EventMerge $ Merge
1886+ => (forall a. q a -> Event x (v a))
1663− { mergeParents = m
1887+ -> DynamicS x (PatchDMap k q) -> Event x (DMap k v)
1664− , mergeSubscribed = unsafeNewIORef m Nothing
1888+mergeG nt d = cacheEvent (mergeCheap nt d)
1890+{-# INLINE mergeWithMove #-}
1891+mergeWithMove :: forall k v q x. (HasSpiderTimeline x, GCompare k)
1892+ => (forall a. q a -> Event x (v a))
1893+ -> DynamicS x (PatchDMapWithMove k q) -> Event x (DMap k v)
1894+mergeWithMove nt d = cacheEvent (mergeCheapWithMove nt d)
1896+{-# INLINE [1] mergeCheap #-}
1898+ :: forall k x q v. (HasSpiderTimeline x, GCompare k)
1899+ => (forall a. q a -> Event x (v a))
1900+ -> DynamicS x (PatchDMap k q)
1901+ -> Event x (DMap k v)
1902+mergeCheap nt = mergeGCheap' unMergeSubscribedParent getInitialSubscribers updateMe destroy
1904+ updateMe :: MergeUpdateFunc k v x (PatchDMap k q) (MergeSubscribedParent x)
1905+ updateMe subscriber heightBagRef oldParents (PatchDMap p) = do
1906+ let f (subscriptionsToKill, ps) (k :=> ComposeMaybe me) = do
1907+ (mOldSubd, newPs) <- case me of
1908+ Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
1910+ let s = subscriber $ return k
1911+ subscription@(EventSubscription _ subd) <- subscribe (nt e) s
1912+ newParentHeight <- liftIO $ getEventSubscribedHeight subd
1913+ let newParent = MergeSubscribedParent subscription
1914+ liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
1915+ return $ DMap.insertLookupWithKey' (\_ new _ -> new) k newParent ps
1916+ forM_ mOldSubd $ \oldSubd -> do
1917+ oldHeight <- liftIO $ getEventSubscribedHeight $
1918+ _eventSubscription_subscribed $ unMergeSubscribedParent oldSubd
1920+ liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
1921+ return (maybeToList (unMergeSubscribedParent <$> mOldSubd) ++ subscriptionsToKill, newPs)
1922+ foldM f ([], oldParents) $ DMap.toList p
1924+ getInitialSubscribers :: MergeInitFunc k v q x (MergeSubscribedParent x)
1925+ getInitialSubscribers initialParents subscriber = do
1926+ subscribers <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
1927+ let s = subscriber $ return k
1928+ (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead (nt e) s
1929+ height <- liftIO $ getEventSubscribedHeight parentSubd
1930+ return (fmap (k :=>) parentOcc, height, k :=> MergeSubscribedParent subscription)
1931+ return ( DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
1932+ , fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1933+ , DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
1936+ destroy :: MergeDestroyFunc k (MergeSubscribedParent x)
1937+ destroy s = forM_ (DMap.toList s) $ \(_ :=> MergeSubscribedParent sub) -> unsubscribe sub
1939+{-# INLINE [1] mergeCheapWithMove #-}
1940+mergeCheapWithMove :: forall k x v q. (HasSpiderTimeline x, GCompare k)
1941+ => (forall a. q a -> Event x (v a))
1942+ -> DynamicS x (PatchDMapWithMove k q)
1943+ -> Event x (DMap k v)
1944+mergeCheapWithMove nt = mergeGCheap' _mergeSubscribedParentWithMove_subscription getInitialSubscribers updateMe destroy
1946+ updateMe :: MergeUpdateFunc k v x (PatchDMapWithMove k q) (MergeSubscribedParentWithMove x k)
1947+ updateMe subscriber heightBagRef oldParents p = do
1948+ -- Prepare new parents for insertion
1949+ let subscribeParent :: forall a. k a -> Event x (v a) -> EventM x (MergeSubscribedParentWithMove x k a)
1950+ subscribeParent k e = do
1951+ keyRef <- liftIO $ newIORef k
1952+ let s = subscriber $ liftIO $ readIORef keyRef
1953+ subscription@(EventSubscription _ subd) <- subscribe e s
1955+ newParentHeight <- getEventSubscribedHeight subd
1956+ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
1957+ return $ MergeSubscribedParentWithMove subscription keyRef
1958+ p' <- PatchDMapWithMove.traversePatchDMapWithMoveWithKey (\k q -> subscribeParent k (nt q)) p
1959+ -- Collect old parents for deletion and update the keys of moved parents
1960+ let moveOrDelete :: forall a. k a -> PatchDMapWithMove.NodeInfo k q a -> MergeSubscribedParentWithMove x k a -> Constant (EventM x (Maybe (EventSubscription x))) a
1961+ moveOrDelete _ ni parent = Constant $ case getComposeMaybe $ PatchDMapWithMove._nodeInfo_to ni of
1963+ oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $
1964+ _mergeSubscribedParentWithMove_subscription parent
1966+ liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
1967+ return $ Just $ _mergeSubscribedParentWithMove_subscription parent
1969+ liftIO $ writeIORef (_mergeSubscribedParentWithMove_key parent) $! toKey
1971+ toDelete <- fmap catMaybes $ mapM (\(_ :=> v) -> getConstant v) $ DMap.toList $
1972+ DMap.intersectionWithKey moveOrDelete (unPatchDMapWithMove p) oldParents
1974+ return (toDelete, applyAlways p' oldParents)
1975+ getInitialSubscribers :: MergeInitFunc k v q x (MergeSubscribedParentWithMove x k)
1976+ getInitialSubscribers initialParents subscriber = do
1977+ subscribers <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
1978+ keyRef <- liftIO $ newIORef k
1979+ let s = subscriber $ liftIO $ readIORef keyRef
1980+ (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead (nt e) s
1981+ height <- liftIO $ getEventSubscribedHeight parentSubd
1982+ return (fmap (k :=>) parentOcc, height, k :=> MergeSubscribedParentWithMove subscription keyRef)
1983+ return ( DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
1984+ , fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1985+ , DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
1988+ destroy :: MergeDestroyFunc k (MergeSubscribedParentWithMove x k)
1989+ destroy s = forM_ (DMap.toList s) $ \(_ :=> MergeSubscribedParentWithMove sub _) -> unsubscribe sub
1991+type MergeUpdateFunc k v x p s
1992+ = (forall a. EventM x (k a) -> Subscriber x (v a))
1996+ -> EventM x ([EventSubscription x], DMap k s)
1998+type MergeGetSubscription x s = forall a. s a -> EventSubscription x
2000+type MergeInitFunc k v q x s
2002+ -> (forall a. EventM x (k a) -> Subscriber x (v a))
2003+ -> EventM x (DMap k v, [Height], DMap k s)
2005+type MergeDestroyFunc k s
2009+data Merge x k v s = Merge
2010+ { _merge_parentsRef :: {-# UNPACK #-} !(IORef (DMap k s))
2011+ , _merge_heightBagRef :: {-# UNPACK #-} !(IORef HeightBag)
2012+ , _merge_heightRef :: {-# UNPACK #-} !(IORef Height)
2013+ , _merge_sub :: {-# UNPACK #-} !(Subscriber x (DMap k v))
2014+ , _merge_accumRef :: {-# UNPACK #-} !(IORef (DMap k v))
2017+invalidateMergeHeight :: Merge x k v s -> IO ()
2018+invalidateMergeHeight m = invalidateMergeHeight' (_merge_heightRef m) (_merge_sub m)
2020+invalidateMergeHeight' :: IORef Height -> Subscriber x a -> IO ()
2021+invalidateMergeHeight' heightRef sub = do
2022+ oldHeight <- readIORef heightRef
2023+ -- If the height used to be valid, it must be invalid now; we should never have *more* heights than we have parents
2024+ when (oldHeight /= invalidHeight) $ do
2025+ writeIORef heightRef $! invalidHeight
2026+ subscriberInvalidateHeight sub oldHeight
2028+revalidateMergeHeight :: Merge x k v s -> IO ()
2029+revalidateMergeHeight m = do
2030+ currentHeight <- readIORef $ _merge_heightRef m
2032+ -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
2033+ when (currentHeight == invalidHeight) $ do
2034+ heights <- readIORef $ _merge_heightBagRef m
2035+ parents <- readIORef $ _merge_parentsRef m
2036+ -- When the number of heights in the bag reaches the number of parents, we should have a valid height
2037+ case heightBagSize heights `compare` DMap.size parents of
2040+ let height = succHeight $ heightBagMax heights
2041+ traceInvalidateHeight $ "recalculateSubscriberHeight: height: " <> show height
2042+ writeIORef (_merge_heightRef m) $! height
2043+ subscriberRecalculateHeight (_merge_sub m) height
2044+ GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show (DMap.size parents) <> ") for Merge"
2046+scheduleMergeSelf :: HasSpiderTimeline x => Merge x k v s -> Height -> EventM x ()
2047+scheduleMergeSelf m height = scheduleMerge' height (_merge_heightRef m) $ do
2048+ vals <- liftIO $ readIORef $ _merge_accumRef m
2049+ -- Once we're done with this, we can clear it immediately, because if there's a cacheEvent in front of us,
2050+ -- it'll handle subsequent subscribers, and if not, we won't get subsequent subscribers
2051+ liftIO $ writeIORef (_merge_accumRef m) $! DMap.empty
2052+ --TODO: Assert that m is not empty
2053+ subscriberPropagate (_merge_sub m) vals
2055+checkCycle :: HasSpiderTimeline x => EventSubscribed x -> EventM x ()
2056+checkCycle subscribed = liftIO $ do
2057+ height <- readIORef (eventSubscribedHeightRef subscribed)
2059+ -- currentHeight <- getCurrentHeight
2060+ -- when (height <= currentHeight) $ if height /= invalidHeight
2062+ -- myStack <- liftIO $ whoCreatedIORef undefined --TODO
2063+ -- error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
2065+ when (height == invalidHeight) $
2068+ nodesInvolvedInCycle <- walkInvalidHeightParents subscribed
2069+ stacks <- forM nodesInvolvedInCycle whoCreatedEventSubscribed
2070+ throwIO (EventLoopException stacks)
2072+ throwIO EventLoopException
2076+mergeSubscriber :: forall x k v s a. (HasSpiderTimeline x, GCompare k) => EventSubscribed x -> Merge x k v s -> EventM x (k a) -> Subscriber x (v a)
2077+mergeSubscriber subscribed m getKey = Subscriber
2078+ { subscriberPropagate = \a -> do
2079+ oldM <- liftIO $ readIORef $ _merge_accumRef m
2081+ let newM = DMap.insertWith (error "Same key fired multiple times for Merge") k a oldM
2082+ tracePropagate (Proxy :: Proxy x) $ " DMap.size oldM = " <> show (DMap.size oldM) <> "; DMap.size newM = " <> show (DMap.size newM)
2083+ liftIO $ writeIORef (_merge_accumRef m) $! newM
2084+ when (DMap.null oldM) $ do -- Only schedule the firing once
2085+ height <- liftIO $ readIORef $ _merge_heightRef m
2086+ checkCycle subscribed
2088+ scheduleMergeSelf m height
2089+ , subscriberInvalidateHeight = \old -> do --TODO: When removing a parent doesn't actually change the height, maybe we can avoid invalidating
2090+ modifyIORef' (_merge_heightBagRef m) $ heightBagRemove old
2091+ invalidateMergeHeight m
2092+ , subscriberRecalculateHeight = \new -> do
2093+ modifyIORef' (_merge_heightBagRef m) $ heightBagAdd new
2094+ revalidateMergeHeight m
1667−newtype EventSelector k = EventSelector { select :: forall a. k a -> Event a }
2097+--TODO: Be able to run as much of this as possible promptly
2098+updateMerge :: (HasSpiderTimeline x, GCompare k) => EventSubscribed x -> Merge x k v s -> MergeUpdateFunc k v x p s -> p -> SomeMergeUpdate x
2099+updateMerge subscribed m updateFunc p = SomeMergeUpdate updateMe (invalidateMergeHeight m) (revalidateMergeHeight m)
2100+ where updateMe = do
2101+ oldParents <- liftIO $ readIORef $ _merge_parentsRef m
2102+ (subscriptionsToKill, newParents) <- updateFunc (mergeSubscriber subscribed m) (_merge_heightBagRef m) oldParents p
2103+ liftIO $ writeIORef (_merge_parentsRef m) $! newParents
2104+ return subscriptionsToKill
2106+{-# INLINE mergeGCheap' #-}
2107+mergeGCheap' :: forall k v x p s q. (HasSpiderTimeline x, GCompare k, PatchTarget p ~ DMap k q)
2108+ => MergeGetSubscription x s -> MergeInitFunc k v q x s -> MergeUpdateFunc k v x p s -> MergeDestroyFunc k s -> DynamicS x p -> Event x (DMap k v)
2109+mergeGCheap' getParent getInitialSubscribers updateFunc destroy d = Event $ \sub -> do
2110+ initialParents <- readBehaviorUntracked $ dynamicCurrent d
2111+ accumRef <- liftIO $ newIORef $ error "merge: accumRef not yet initialized"
2112+ heightRef <- liftIO $ newIORef $ error "merge: heightRef not yet initialized"
2113+ heightBagRef <- liftIO $ newIORef $ error "merge: heightBagRef not yet initialized"
2114+ parentsRef :: IORef (DMap k s) <- liftIO $ newIORef $ error "merge: parentsRef not yet initialized"
2115+ changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2117+ let subscribed = EventSubscribed
2118+ { eventSubscribedHeightRef = heightRef
2119+ , eventSubscribedRetained = toAny (parentsRef, changeSubdRef)
2121+ , eventSubscribedGetParents = do
2122+ let getParent' (_ :=> v) = _eventSubscription_subscribed (getParent v)
2123+ fmap getParent' . DMap.toList <$> readIORef parentsRef
2124+ , eventSubscribedHasOwnHeightRef = False
2125+ , eventSubscribedWhoCreated = whoCreatedIORef heightRef
2130+ { _merge_parentsRef = parentsRef
2131+ , _merge_heightBagRef = heightBagRef
2132+ , _merge_heightRef = heightRef
2134+ , _merge_accumRef = accumRef
2136+ (dm, heights, initialParentState) <- getInitialSubscribers initialParents $ mergeSubscriber subscribed m
2137+ let myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
2138+ myHeight = if invalidHeight `elem` heights
2140+ else succHeight $ heightBagMax myHeightBag
2141+ currentHeight <- getCurrentHeight
2142+ let (occ, accum) = if currentHeight >= myHeight -- If we should have fired by now
2143+ then (if DMap.null dm then Nothing else Just dm, DMap.empty)
2145+ unless (DMap.null accum) $ scheduleMergeSelf m myHeight
2146+ liftIO $ writeIORef accumRef $! accum
2147+ liftIO $ writeIORef heightRef $! myHeight
2148+ liftIO $ writeIORef heightBagRef $! myHeightBag
2149+ liftIO $ writeIORef parentsRef $! initialParentState
2150+ defer $ SomeMergeInit $ do
2151+ let changeSubscriber = Subscriber
2152+ { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2153+ tracePropagate (Proxy :: Proxy x) "SubscriberMerge/Change"
2154+ defer $ updateMerge subscribed m updateFunc a
2155+ , subscriberInvalidateHeight = \_ -> return ()
2156+ , subscriberRecalculateHeight = \_ -> return ()
2158+ (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
2159+ forM_ change $ \c -> defer $ updateMerge subscribed m updateFunc c
2160+ -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
2161+ -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
2162+ -- its subscription.
2163+ liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
2164+ let unsubscribeAll = destroy =<< readIORef parentsRef
2166+ return (EventSubscription unsubscribeAll subscribed, occ)
2169+mergeInt :: forall x a. (HasSpiderTimeline x) => DynamicS x (PatchIntMap (Event x a)) -> Event x (IntMap a)
2170+mergeInt = cacheEvent . mergeIntCheap
2172+{-# INLINABLE mergeIntCheap #-}
2173+mergeIntCheap :: forall x a. (HasSpiderTimeline x) => DynamicS x (PatchIntMap (Event x a)) -> Event x (IntMap a)
2174+mergeIntCheap d = Event $ \sub -> do
2175+ initialParents <- readBehaviorUntracked $ dynamicCurrent d
2176+ accum <- liftIO $ FastMutableIntMap.newEmpty
2177+ heightRef <- liftIO $ newIORef zeroHeight
2178+ heightBagRef <- liftIO $ newIORef heightBagEmpty
2179+ parents <- liftIO $ FastMutableIntMap.newEmpty
2180+ changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2181+ let subscribed = EventSubscribed
2182+ { eventSubscribedHeightRef = heightRef
2183+ , eventSubscribedRetained = toAny (parents, changeSubdRef)
2185+ , eventSubscribedGetParents = fmap (_eventSubscription_subscribed . snd) <$> FastMutableIntMap.toList parents
2186+ , eventSubscribedHasOwnHeightRef = False
2187+ , eventSubscribedWhoCreated = whoCreatedIORef heightRef
2190+ let scheduleSelf = do
2191+ height <- liftIO $ readIORef $ heightRef
2192+ scheduleMerge' height heightRef $ do
2193+ vals <- liftIO $ FastMutableIntMap.getFrozenAndClear accum
2194+ subscriberPropagate sub vals
2195+ invalidateMyHeight = invalidateMergeHeight' heightRef sub
2196+ recalculateMyHeight = do
2197+ currentHeight <- readIORef heightRef
2198+ when (currentHeight == invalidHeight) $ do --TODO: This will almost always be true; can we get rid of this check and just proceed to the next one always?
2199+ heights <- readIORef heightBagRef
2200+ numParents <- FastMutableIntMap.size parents
2201+ case heightBagSize heights `compare` numParents of
2204+ let height = succHeight $ heightBagMax heights
2205+ traceInvalidateHeight $ "recalculateSubscriberHeight: height: " <> show height
2206+ writeIORef heightRef $! height
2207+ subscriberRecalculateHeight sub height
2208+ GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show numParents <> ") for Merge"
2209+ mySubscriber k = Subscriber
2210+ { subscriberPropagate = \a -> do
2211+ checkCycle subscribed
2213+ wasEmpty <- liftIO $ FastMutableIntMap.isEmpty accum
2214+ liftIO $ FastMutableIntMap.insert accum k a
2215+ when wasEmpty scheduleSelf
2216+ , subscriberInvalidateHeight = \old -> do
2217+ modifyIORef' heightBagRef $ heightBagRemove old
2219+ , subscriberRecalculateHeight = \new -> do
2220+ modifyIORef' heightBagRef $ heightBagAdd new
2221+ recalculateMyHeight
2223+ forM_ (IntMap.toList initialParents) $ \(k, p) -> do
2224+ (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead p $ mySubscriber k
2226+ forM_ parentOcc $ FastMutableIntMap.insert accum k
2227+ FastMutableIntMap.insert parents k subscription
2228+ height <- getEventSubscribedHeight parentSubd
2229+ if height == invalidHeight
2230+ then writeIORef heightRef invalidHeight
2232+ modifyIORef' heightBagRef $ heightBagAdd height
2233+ modifyIORef' heightRef $ \oldHeight ->
2234+ if oldHeight == invalidHeight
2236+ else max (succHeight height) oldHeight
2237+ myHeight <- liftIO $ readIORef heightRef
2238+ currentHeight <- getCurrentHeight
2239+ isEmpty <- liftIO $ FastMutableIntMap.isEmpty accum
2240+ occ <- if currentHeight >= myHeight -- If we should have fired by now
2242+ then return Nothing
2243+ else liftIO $ Just <$> FastMutableIntMap.getFrozenAndClear accum
2244+ else do when (not isEmpty) scheduleSelf -- We have things accumulated, but we shouldn't have fired them yet
2246+ defer $ SomeMergeInit $ do
2247+ let updateMe a = SomeMergeUpdate u invalidateMyHeight recalculateMyHeight
2250+ let f k newParent = do
2251+ subscription@(EventSubscription _ subd) <- subscribe newParent $ mySubscriber k
2252+ newParentHeight <- liftIO $ getEventSubscribedHeight subd
2253+ liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
2254+ return subscription
2255+ newSubscriptions <- FastMutableIntMap.traverseIntMapPatchWithKey f a
2256+ oldParents <- liftIO $ FastMutableIntMap.applyPatch parents newSubscriptions
2257+ liftIO $ for_ oldParents $ \oldParent -> do
2258+ oldParentHeight <- getEventSubscribedHeight $ _eventSubscription_subscribed oldParent
2260+ print ("updateMe", oldParentHeight)
2261+ modifyIORef' heightBagRef $ heightBagRemove oldParentHeight
2262+ return $ IntMap.elems oldParents
2263+ let changeSubscriber = Subscriber
2264+ { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2265+ tracePropagate (Proxy :: Proxy x) $ "SubscriberMergeInt/Change"
2267+ , subscriberInvalidateHeight = \_ -> return ()
2268+ , subscriberRecalculateHeight = \_ -> return ()
2270+ (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
2271+ forM_ change $ \c -> defer $ updateMe c
2272+ -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
2273+ -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
2274+ -- its subscription.
2275+ liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
2276+ let unsubscribeAll = traverse_ unsubscribe =<< FastMutableIntMap.getFrozenAndClear parents
2279+ return (EventSubscription unsubscribeAll subscribed, occ)
1669−fan :: GCompare k => Event (DMap k Identity) -> EventSelector k
2281+newtype EventSelector x k = EventSelector { select :: forall a. k a -> Event x a }
1670−fan e =
2282+newtype EventSelectorG x k v = EventSelectorG { selectG :: forall a. k a -> Event x (v a) }
2284+fanG :: (HasSpiderTimeline x, GCompare k) => Event x (DMap k v) -> EventSelectorG x k v
2285+fanG e = unsafePerformIO $ do
2286+ ref <- newIORef Nothing
1671 let f = Fan
2287 let f = Fan
1672 { fanParent = e
2288 { fanParent = e
1673− , fanSubscribed = unsafeNewIORef e Nothing
2289+ , fanSubscribed = ref
1675− in EventSelector $ \k -> EventFan k f
2291+ pure $ EventSelectorG $ \k -> eventFan k f
1677−{- SPECIALIZE runHoldInits :: IORef [SomeHoldInit] -> IORef [SomeMergeInit] -> EventM x () #-}
1678−--runHoldInits :: (CanSubscribe x m, Defer SomeMergeUpdate m) => IORef [SomeHoldInit] -> IORef [SomeMergeInit] -> m ()
1679−runHoldInits :: IORef [SomeHoldInit] -> IORef [SomeMergeInit] -> EventM x ()
2293+runHoldInits :: HasSpiderTimeline x => IORef [SomeHoldInit x] -> IORef [SomeDynInit x] -> IORef [SomeMergeInit x] -> EventM x ()
1680−runHoldInits holdInitRef mergeInitRef = do
2294+runHoldInits holdInitRef dynInitRef mergeInitRef = do
1681 holdInits <- liftIO $ readIORef holdInitRef
2295 holdInits <- liftIO $ readIORef holdInitRef
2296+ dynInits <- liftIO $ readIORef dynInitRef
1682 mergeInits <- liftIO $ readIORef mergeInitRef
2297 mergeInits <- liftIO $ readIORef mergeInitRef
1683− if null holdInits && null mergeInits then return () else do
2298+ unless (null holdInits && null dynInits && null mergeInits) $ do
1684− liftIO $ writeIORef holdInitRef $! []
2299+ liftIO $ writeIORef holdInitRef []
2300+ liftIO $ writeIORef dynInitRef []
1685− liftIO $ writeIORef mergeInitRef $! []
2301+ liftIO $ writeIORef mergeInitRef []
1686 mapM_ initHold holdInits
2302 mapM_ initHold holdInits
1687− mapM_ initMerge mergeInits
2303+ mapM_ initDyn dynInits
2304+ mapM_ unSomeMergeInit mergeInits
1688− runHoldInits holdInitRef mergeInitRef
2305+ runHoldInits holdInitRef dynInitRef mergeInitRef
1690−{- SPECIALIZE initHold :: SomeHoldInit -> EventM x () #-}
2307+initHold :: HasSpiderTimeline x => SomeHoldInit x -> EventM x ()
1691−--initHold :: CanSubscribe x m => SomeHoldInit -> m ()
1692−initHold :: SomeHoldInit -> EventM x ()
1693initHold (SomeHoldInit h) = void $ getHoldEventSubscription h
2308initHold (SomeHoldInit h) = void $ getHoldEventSubscription h
1695−{- SPECIALIZE initMerge :: SomeMergeInit -> EventM x () #-}
2310+initDyn :: HasSpiderTimeline x => SomeDynInit x -> EventM x ()
1696−--initMerge :: (CanSubscribe x m, Defer SomeMergeUpdate m) => SomeMergeInit -> m ()
2311+initDyn (SomeDynInit d) = void $ getDynHold d
1697−initMerge :: SomeMergeInit -> EventM x ()
1698−initMerge (SomeMergeInit subscribed changed) = do
1699− changeSub <- liftIO $ newSubscriberMergeChange subscribed
1700− EventSubscription _ changeSubd <- subscribe changed changeSub
1701− change <- liftIO $ readEventSubscribed changeSubd
1702− forM_ change $ \c -> defer $ SomeMergeUpdate c subscribed
1703− liftIO $ writeIORef (mergeSubscribedChange subscribed) $! (changeSub, changeSubd)
1705−-- | Run an event action outside of a frame
2313+newEventEnv :: IO (EventEnv x)
1706−runFrame :: EventM x a -> SpiderHost x a --TODO: This function also needs to hold the mutex
2314+newEventEnv = do
1707−runFrame a = SpiderHost $ ask >>= \spiderEnv -> lift $ do
1708− -- Clear out pending unsubscriptions; these will need to happen eventually anyway, and might cause us a lot of extra work during the frame, so get rid of them now
1709− pendingCleanups <- atomicModifyIORef (_spiderEnv_cleanups spiderEnv) $ \x -> ([], x)
1710− {-# SCC "cleanups" #-} sequence_ pendingCleanups
1711 toAssignRef <- newIORef [] -- This should only actually get used when events are firing
2315 toAssignRef <- newIORef [] -- This should only actually get used when events are firing
1712 holdInitRef <- newIORef []
2316 holdInitRef <- newIORef []
2317+ dynInitRef <- newIORef []
1713 mergeUpdateRef <- newIORef []
2318 mergeUpdateRef <- newIORef []
1714 mergeInitRef <- newIORef []
2319 mergeInitRef <- newIORef []
1715 heightRef <- newIORef zeroHeight
2320 heightRef <- newIORef zeroHeight
1716 toClearRef <- newIORef []
2321 toClearRef <- newIORef []
2322+ toClearIntRef <- newIORef []
1717 toClearRootRef <- newIORef []
2323 toClearRootRef <- newIORef []
1718 coincidenceInfosRef <- newIORef []
2324 coincidenceInfosRef <- newIORef []
1719− delayedRef <- liftIO $ newIORef IntMap.empty
2325+ delayedRef <- newIORef IntMap.empty
1720− let env = EventEnv spiderEnv toAssignRef holdInitRef mergeUpdateRef mergeInitRef toClearRef toClearRootRef heightRef coincidenceInfosRef delayedRef
2326+ return $ EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef
2328+clearEventEnv :: EventEnv x -> IO ()
2329+clearEventEnv (EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef) = do
2330+ writeIORef toAssignRef []
2331+ writeIORef holdInitRef []
2332+ writeIORef dynInitRef []
2333+ writeIORef mergeUpdateRef []
2334+ writeIORef mergeInitRef []
2335+ writeIORef heightRef zeroHeight
2336+ writeIORef toClearRef []
2337+ writeIORef toClearIntRef []
2338+ writeIORef toClearRootRef []
2339+ writeIORef coincidenceInfosRef []
2340+ writeIORef delayedRef IntMap.empty
2342+-- | Run an event action outside of a frame
2343+runFrame :: forall x a. HasSpiderTimeline x => EventM x a -> SpiderHost x a --TODO: This function also needs to hold the mutex
2344+runFrame a = SpiderHost $ do
2345+ let env = _spiderTimeline_eventEnv $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1721 let go = do
2346 let go = do
1722 result <- a
2347 result <- a
1723− runHoldInits holdInitRef mergeInitRef -- This must happen before doing the assignments, in case subscribing a Hold causes existing Holds to be read by the newly-propagated events
2348+ runHoldInits (eventEnvHoldInits env) (eventEnvDynInits env) (eventEnvMergeInits env) -- This must happen before doing the assignments, in case subscribing a Hold causes existing Holds to be read by the newly-propagated events
1724 return result
2349 return result
1725− result <- runEventM go env
2350+ result <- runEventM go
1726− toClear <- readIORef toClearRef
2351+ toClear <- readIORef $ eventEnvClears env
1727− forM_ toClear $ \(SomeClear ref) -> {-# SCC "clear" #-} writeIORef ref $! Nothing
2352+ forM_ toClear $ \(Some (Clear ref)) -> {-# SCC "clear" #-} writeIORef ref Nothing
2353+ toClearInt <- readIORef $ eventEnvIntClears env
2354+ forM_ toClearInt $ \(Some (IntClear ref)) -> {-# SCC "intClear" #-} writeIORef ref $! IntMap.empty
1728− toClearRoot <- readIORef toClearRootRef
2355+ toClearRoot <- readIORef $ eventEnvRootClears env
1729− forM_ toClearRoot $ \(SomeRootClear ref) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
2356+ forM_ toClearRoot $ \(Some (RootClear ref)) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
1730− toAssign <- readIORef toAssignRef
2357+ toAssign <- readIORef $ eventEnvAssignments env
1731 toReconnectRef <- newIORef []
2358 toReconnectRef <- newIORef []
1732− coincidenceInfos <- readIORef coincidenceInfosRef
2359+ coincidenceInfos <- readIORef $ eventEnvResetCoincidences env
1733 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
2360 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
1734 writeIORef vRef v
2361 writeIORef vRef v
1735− when debugInvalidate $ putStrLn $ "Invalidating Hold"
2362+ traceInvalidate $ "Invalidating Hold"
1736 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
2363 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
1737− mergeUpdates <- readIORef mergeUpdateRef
2364+ mergeUpdates <- readIORef $ eventEnvMergeUpdates env
1738− writeIORef mergeUpdateRef $! []
2365+ writeIORef (eventEnvMergeUpdates env) []
1739− let updateMerge :: SomeMergeUpdate -> IO [SomeEventSubscription]
2366+ tracePropagate (Proxy::Proxy x) $ "Updating merges"
1740− updateMerge (SomeMergeUpdate (R.PatchDMap p :: R.PatchDMap (DMap k Event)) m) = do
1741− oldParents <- readIORef $ mergeSubscribedParents m
1742− let f (subscriptionsToKill, ps) (k :=> Compose me) = do
1743− (mOldSubd, newPs) <- case me of
1744− Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
1746− s <- liftIO $ newSubscriberMerge k m
1747− subscription@(EventSubscription _ subd) <- subscribe e s
1748− let newParent = MergeSubscribedParent subscription s
1749− newParentHeight <- liftIO $ getEventSubscribedHeight subd
1750− liftIO $ addMergeHeight newParentHeight m
1751− return $ DMap.insertLookupWithKey' (\_ new _ -> new) k newParent ps
1752− forM_ mOldSubd $ \oldSubd -> do
1753− oldHeight <- liftIO $ readIORef $ eventSubscribedHeightRef $ _eventSubscription_subscribed $ mergeSubscribedParentSubscription oldSubd
1754− liftIO $ removeMergeHeight oldHeight m
1755− return (maybeToList (SomeEventSubscription . mergeSubscribedParentSubscription <$> mOldSubd) ++ subscriptionsToKill, newPs)
1756− (subscriptionsToKill, newParents) <- flip runEventM env $ foldM f ([], oldParents) $ DMap.toList p --TODO: I think this runEventM is OK, since no events are firing at this time, but it might not be
1757− writeIORef (mergeSubscribedParents m) $! newParents
1758− return subscriptionsToKill
1759− when debugPropagate $ putStrLn "Updating merges"
1760− mergeSubscriptionsToKill <- concat <$> mapM updateMerge mergeUpdates
2367+ mergeSubscriptionsToKill <- runEventM $ concat <$> mapM _someMergeUpdate_update mergeUpdates
1761− when debugPropagate $ putStrLn "Updating merges done"
2368+ tracePropagate (Proxy::Proxy x) $ "Updating merges done"
1762 toReconnect <- readIORef toReconnectRef
2369 toReconnect <- readIORef toReconnectRef
1763 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
2371 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
1764 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
2372 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
1765 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
2373 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
1766− when debugInvalidate $ putStrLn $ "Finalizing invalidator for Switch" <> showNodeId subscribed
2374+ traceInvalidate $ "Finalizing invalidator for Switch" <> showNodeId subscribed
1767 finalize wi
2375 finalize wi
1768 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
2376 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
1769 wi' <- mkWeakPtrWithDebug i "wi'"
2377 wi' <- mkWeakPtrWithDebug i "wi'"
1770 writeIORef (switchSubscribedOwnWeakInvalidator subscribed) $! wi'
2378 writeIORef (switchSubscribedOwnWeakInvalidator subscribed) $! wi'
1771− writeIORef (switchSubscribedBehaviorParents subscribed) $! []
2379+ writeIORef (switchSubscribedBehaviorParents subscribed) []
1772− writeIORef holdInitRef $! [] --TODO: Should we reuse this?
2380+ writeIORef (eventEnvHoldInits env) [] --TODO: Should we reuse this?
1773− e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) holdInitRef
2381+ e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) $ eventEnvHoldInits env
1774− runEventM (runHoldInits holdInitRef mergeInitRef) env --TODO: Is this actually OK? It seems like it should be, since we know that no events are firing at this point, but it still seems inelegant
2382+ runEventM $ runHoldInits (eventEnvHoldInits env) (eventEnvDynInits env) (eventEnvMergeInits env) --TODO: Is this actually OK? It seems like it should be, since we know that no events are firing at this point, but it still seems inelegant
1775 --TODO: Make sure we touch the pieces of the SwitchSubscribed at the appropriate times
2383 --TODO: Make sure we touch the pieces of the SwitchSubscribed at the appropriate times
1776 sub <- newSubscriberSwitch subscribed
2384 sub <- newSubscriberSwitch subscribed
1777− subscription <- runReaderT (unSpiderHost (runFrame ({-# SCC "subscribeSwitch" #-} subscribe e sub))) spiderEnv --TODO: Assert that the event isn't firing --TODO: This should not loop because none of the events should be firing, but still, it is inefficient
2385+ subscription <- unSpiderHost $ runFrame $ {-# SCC "subscribeSwitch" #-} subscribe e sub --TODO: Assert that the event isn't firing --TODO: This should not loop because none of the events should be firing, but still, it is inefficient
1779− stackTrace <- liftIO $ liftM renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
2387+ stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
1780− liftIO $ putStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
2388+ liftIO $ debugStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
1781 EventRoot _ -> "EventRoot"
2389 EventRoot _ -> "EventRoot"
1782 EventNever -> "EventNever"
2390 EventNever -> "EventNever"
1783 _ -> "something else"
2391 _ -> "something else"
1785 writeIORef (switchSubscribedCurrentParent subscribed) $! subscription
2393 writeIORef (switchSubscribedCurrentParent subscribed) $! subscription
1786− return $ SomeEventSubscription oldSubscription
2394+ return oldSubscription
1787− forM_ mergeSubscriptionsToKill $ \(SomeEventSubscription oldSubscription) -> liftIO $ unsubscribe oldSubscription
2395+ liftIO $ mapM_ unsubscribe mergeSubscriptionsToKill
1788− forM_ switchSubscriptionsToKill $ \(SomeEventSubscription oldSubscription) -> liftIO $ unsubscribe oldSubscription
2396+ liftIO $ mapM_ unsubscribe switchSubscriptionsToKill
1789 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
2397 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
1790 EventSubscription _ subd' <- readIORef $ switchSubscribedCurrentParent subscribed
2398 EventSubscription _ subd' <- readIORef $ switchSubscribedCurrentParent subscribed
1791− parentHeight <- readIORef $ eventSubscribedHeightRef subd'
2399+ parentHeight <- getEventSubscribedHeight subd'
1792 myHeight <- readIORef $ switchSubscribedHeight subscribed
2400 myHeight <- readIORef $ switchSubscribedHeight subscribed
1793 when (parentHeight /= myHeight) $ do
2401 when (parentHeight /= myHeight) $ do
1794 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
2402 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
1795− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
2403+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
1796− forM_ mergeUpdates $ \(SomeMergeUpdate _ m) -> do
1797− invalidateMergeHeight m --TODO: In addition to when the patch is completely empty, we should also not run this if it has some Nothing values, but none of them have actually had any effect; potentially, we could even check for Just values with no effect (e.g. by comparing their IORefs and ignoring them if they are unchanged); actually, we could just check if the new height is different
2404+ mapM_ _someMergeUpdate_invalidateHeight mergeUpdates --TODO: In addition to when the patch is completely empty, we should also not run this if it has some Nothing values, but none of them have actually had any effect; potentially, we could even check for Just values with no effect (e.g. by comparing their IORefs and ignoring them if they are unchanged); actually, we could just check if the new height is different
1798 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
2405 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
1799 unsubscribe subscription
2406 unsubscribe subscription
1800 mapM_ invalidateCoincidenceHeight mcs
2407 mapM_ invalidateCoincidenceHeight mcs
1801 forM_ coincidenceInfos $ \(SomeResetCoincidence _ mcs) -> mapM_ recalculateCoincidenceHeight mcs
2408 forM_ coincidenceInfos $ \(SomeResetCoincidence _ mcs) -> mapM_ recalculateCoincidenceHeight mcs
1802− forM_ mergeUpdates $ \(SomeMergeUpdate _ m) -> revalidateMergeHeight m
2409+ mapM_ _someMergeUpdate_recalculateHeight mergeUpdates
1803 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> do
2410 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> do
1804 height <- calculateSwitchHeight subscribed
2411 height <- calculateSwitchHeight subscribed
1805 updateSwitchHeight height subscribed
2412 updateSwitchHeight height subscribed
@@ -1815,10 +2422,12 @@ zeroHeight = Height 0
1815invalidHeight :: Height
2422invalidHeight :: Height
1816invalidHeight = Height (-1000)
2423invalidHeight = Height (-1000)
1818-- | An invalid height that is currently being traversed, e.g. by walkInvalidHeightParents
2426-- | An invalid height that is currently being traversed, e.g. by walkInvalidHeightParents
1819{-# INLINE invalidHeightBeingTraversed #-}
2427{-# INLINE invalidHeightBeingTraversed #-}
1820invalidHeightBeingTraversed :: Height
2428invalidHeightBeingTraversed :: Height
1821invalidHeightBeingTraversed = Height (-1001)
2429invalidHeightBeingTraversed = Height (-1001)
1823{-# INLINE succHeight #-}
2432{-# INLINE succHeight #-}
1824succHeight :: Height -> Height
2433succHeight :: Height -> Height
@@ -1827,152 +2436,42 @@ succHeight h@(Height a) =
1827 then invalidHeight
2436 then invalidHeight
1828 else Height $ succ a
2437 else Height $ succ a
1830−invalidateSubscriberHeight :: Height -> Subscriber a -> IO ()
1831−invalidateSubscriberHeight old s = case s of
1832− SubscriberPush _ subscribed -> do
1833− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberPush" <> showNodeId subscribed
1834− WeakBag.traverse (pushSubscribedSubscribers subscribed) $ invalidateSubscriberHeight old
1835− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberPush" <> showNodeId subscribed <> " done"
1836− SubscriberMerge _ subscribed -> do
1837− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed
1838− removeMergeHeight old subscribed
1839− invalidateMergeHeight subscribed
1840− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed <> " done"
1841− SubscriberMergeChange _ -> return () -- Doesn't affect the height of the merge, because its changes are delayed
1842− SubscriberFan subscribed -> do
1843− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
1844− subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1845− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
1846− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
1847− SubscriberHold _ -> return ()
1848− SubscriberHoldIdentity _ -> return ()
1849− SubscriberSwitch subscribed -> do
1850− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
1851− oldHeight <- readIORef $ switchSubscribedHeight subscribed
1852− when (oldHeight /= invalidHeight) $ do
1853− writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
1854− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1855− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
1856− SubscriberCoincidenceOuter subscribed -> do
1857− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
1858− invalidateCoincidenceHeight subscribed
1859− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
1860− SubscriberCoincidenceInner subscribed -> do
1861− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
1862− invalidateCoincidenceHeight subscribed
1863− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
1864− SubscriberHandle -> return ()
1866−removeMergeHeight :: Height -> MergeSubscribed k -> IO ()
1867−removeMergeHeight oldParentHeight subscribed = do
1868− when debugInvalidateHeight $ putStrLn $ "removeMergeHeight: " <> show oldParentHeight <> " Merge" <> showNodeId subscribed
1869− oldHeights <- readIORef $ mergeSubscribedHeightBag subscribed
1870− let newHeights = heightBagRemove oldParentHeight oldHeights
1871− writeIORef (mergeSubscribedHeightBag subscribed) $! newHeights
1873−invalidateMergeHeight :: MergeSubscribed k -> IO ()
1874−invalidateMergeHeight subscribed = do
1875− oldHeight <- readIORef $ mergeSubscribedHeight subscribed
1876− -- If the height used to be valid, it must be invalid now; we should never have *more* heights than we have parents
1877− when (oldHeight /= invalidHeight) $ do
1878− writeIORef (mergeSubscribedHeight subscribed) $! invalidHeight
1879− WeakBag.traverse (mergeSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1881−addMergeHeight :: Height -> MergeSubscribed k -> IO ()
1882−addMergeHeight newParentHeight subscribed = do
1883− when debugInvalidateHeight $ putStrLn $ "addMergeHeight: " <> show newParentHeight <> " Merge" <> showNodeId subscribed
1884− oldHeights <- readIORef $ mergeSubscribedHeightBag subscribed
1885− let newHeights = heightBagAdd newParentHeight oldHeights
1886− writeIORef (mergeSubscribedHeightBag subscribed) $! newHeights
1888−revalidateMergeHeight :: MergeSubscribed k -> IO ()
1889−revalidateMergeHeight subscribed = do
1890− currentHeight <- readIORef $ mergeSubscribedHeight subscribed
1891− when (currentHeight == invalidHeight) $ do -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
1892− heights <- readIORef $ mergeSubscribedHeightBag subscribed
1893− parents <- readIORef $ mergeSubscribedParents subscribed
1894− -- When the number of heights in the bag reaches the number of parents, we should have a valid height
1895− case heightBagSize heights `compare` DMap.size parents of
1898− let height = succHeight $ heightBagMax heights
1899− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: height: " <> show height
1900− writeIORef (mergeSubscribedHeight subscribed) $! height
1901− WeakBag.traverse (mergeSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
1902− GT -> error $ "revalidateMergeHeight: more heights than parents for Merge" <> showNodeId subscribed
1904−invalidateCoincidenceHeight :: CoincidenceSubscribed a -> IO ()
2439+invalidateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
1905invalidateCoincidenceHeight subscribed = do
2440invalidateCoincidenceHeight subscribed = do
1906 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
2441 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
1907 when (oldHeight /= invalidHeight) $ do
2442 when (oldHeight /= invalidHeight) $ do
1908 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
2443 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
1909− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
2444+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1911−recalculateSubscriberHeight :: Height -> Subscriber a -> IO ()
1912−recalculateSubscriberHeight new s = case s of
1913− SubscriberPush _ subscribed -> do
1914− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberPush" <> showNodeId subscribed
1915− WeakBag.traverse (pushSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
1916− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberPush" <> showNodeId subscribed <> " done"
1917− SubscriberMerge _ subscribed -> do
1918− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed
1919− addMergeHeight new subscribed
1920− revalidateMergeHeight subscribed
1921− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed <> " done"
1922− SubscriberMergeChange _ -> return ()
1923− SubscriberFan subscribed -> do
1924− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
1925− subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1926− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
1927− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
1928− SubscriberHold _ -> return ()
1929− SubscriberHoldIdentity _ -> return ()
1930− SubscriberSwitch subscribed -> do
1931− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
1932− updateSwitchHeight new subscribed
1933− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
1934− SubscriberCoincidenceOuter subscribed -> do
1935− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
1936− recalculateCoincidenceHeight subscribed
1937− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
1938− SubscriberCoincidenceInner subscribed -> do
1939− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
1940− recalculateCoincidenceHeight subscribed
1941− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
1942− SubscriberHandle -> return ()
1944−updateSwitchHeight :: Height -> SwitchSubscribed a -> IO ()
2446+updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
1945updateSwitchHeight new subscribed = do
2447updateSwitchHeight new subscribed = do
1946 oldHeight <- readIORef $ switchSubscribedHeight subscribed
2448 oldHeight <- readIORef $ switchSubscribedHeight subscribed
1947 when (oldHeight == invalidHeight) $ do --TODO: This 'when' should probably be an assertion
2449 when (oldHeight == invalidHeight) $ do --TODO: This 'when' should probably be an assertion
1948 when (new /= invalidHeight) $ do --TODO: This 'when' should probably be an assertion
2450 when (new /= invalidHeight) $ do --TODO: This 'when' should probably be an assertion
1949 writeIORef (switchSubscribedHeight subscribed) $! new
2451 writeIORef (switchSubscribedHeight subscribed) $! new
1950− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
2452+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
1952−recalculateCoincidenceHeight :: CoincidenceSubscribed a -> IO ()
2454+recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
1953recalculateCoincidenceHeight subscribed = do
2455recalculateCoincidenceHeight subscribed = do
1954 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
2456 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
1955 when (oldHeight == invalidHeight) $ do --TODO: This 'when' should probably be an assertion
2457 when (oldHeight == invalidHeight) $ do --TODO: This 'when' should probably be an assertion
1956 height <- calculateCoincidenceHeight subscribed
2458 height <- calculateCoincidenceHeight subscribed
1957 when (height /= invalidHeight) $ do
2459 when (height /= invalidHeight) $ do
1958 writeIORef (coincidenceSubscribedHeight subscribed) $! height
2460 writeIORef (coincidenceSubscribedHeight subscribed) $! height
1959− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
2461+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
1961−getEventSubscribedHeight :: EventSubscribed a -> IO Height
1962−getEventSubscribedHeight es = readIORef $ eventSubscribedHeightRef es
1964−calculateSwitchHeight :: SwitchSubscribed a -> IO Height
2463+calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
1965−calculateSwitchHeight subscribed = readIORef . eventSubscribedHeightRef . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
2464+calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
1967−calculateCoincidenceHeight :: CoincidenceSubscribed a -> IO Height
2466+calculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO Height
1968calculateCoincidenceHeight subscribed = do
2467calculateCoincidenceHeight subscribed = do
1969− outerHeight <- readIORef $ eventSubscribedHeightRef $ _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
2468+ outerHeight <- getEventSubscribedHeight $ _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
1970− innerHeight <- maybe (return zeroHeight) (readIORef . eventSubscribedHeightRef) =<< readIORef (coincidenceSubscribedInnerParent subscribed)
2469+ innerHeight <- maybe (return zeroHeight) getEventSubscribedHeight =<< readIORef (coincidenceSubscribedInnerParent subscribed)
1971 return $ if outerHeight == invalidHeight || innerHeight == invalidHeight then invalidHeight else max outerHeight innerHeight
2470 return $ if outerHeight == invalidHeight || innerHeight == invalidHeight then invalidHeight else max outerHeight innerHeight
1973−data SomeSwitchSubscribed = forall a. SomeSwitchSubscribed {-# NOUNPACK #-} (SwitchSubscribed a)
2472+data SomeSwitchSubscribed x = forall a. SomeSwitchSubscribed {-# NOUNPACK #-} (SwitchSubscribed x a)
1975−invalidate :: IORef [SomeSwitchSubscribed] -> WeakList Invalidator -> IO (WeakList Invalidator)
2474+invalidate :: IORef [SomeSwitchSubscribed x] -> WeakList (Invalidator x) -> IO (WeakList (Invalidator x))
1976invalidate toReconnectRef wis = do
2475invalidate toReconnectRef wis = do
1977 forM_ wis $ \wi -> do
2476 forM_ wis $ \wi -> do
1978 mi <- deRefWeak wi
2477 mi <- deRefWeak wi
@@ -1987,7 +2486,7 @@ invalidate toReconnectRef wis = do
1987 traceInvalidate $ "invalidate: Pull" <> showNodeId p
2486 traceInvalidate $ "invalidate: Pull" <> showNodeId p
1988 mVal <- readIORef $ pullValue p
2487 mVal <- readIORef $ pullValue p
1989 forM_ mVal $ \val -> do
2488 forM_ mVal $ \val -> do
1990− writeIORef (pullValue p) $! Nothing
2489+ writeIORef (pullValue p) Nothing
1991 writeIORef (pullSubscribedInvalidators val) =<< evaluate =<< invalidate toReconnectRef =<< readIORef (pullSubscribedInvalidators val)
2490 writeIORef (pullSubscribedInvalidators val) =<< evaluate =<< invalidate toReconnectRef =<< readIORef (pullSubscribedInvalidators val)
1992 InvalidatorSwitch subscribed -> do
2491 InvalidatorSwitch subscribed -> do
1993 traceInvalidate $ "invalidate: Switch" <> showNodeId subscribed
2492 traceInvalidate $ "invalidate: Switch" <> showNodeId subscribed
@@ -1998,166 +2497,329 @@ invalidate toReconnectRef wis = do
1998-- Reflex integration
2497-- Reflex integration
1999--------------------------------------------------------------------------------
2498--------------------------------------------------------------------------------
2001−type Spider = SpiderEnv Global
2500+-- | Designates the default, global Spider timeline
2002−
2501+data SpiderTimeline x
2005−{-# NOINLINE globalSpiderEnv #-}
2006−globalSpiderEnv :: SpiderEnv Global
2007−globalSpiderEnv = unsafePerformIO unsafeNewSpiderEnv
2009−type role SpiderEnv nominal
2502+type role SpiderTimeline nominal
2010−data SpiderEnv x = SpiderEnv
2011− { _spiderEnv_toUnsubscribe :: !(IORef [SomeEventSubscription])
2012− , _spiderEnv_lock :: !(MVar ())
2013− , _spiderEnv_cleanups :: !(IORef [IO ()])
2015− , _spiderEnv_depth :: !(IORef Int)
2019−instance GEq SpiderEnv where
2020− a `geq` b = if _spiderEnv_toUnsubscribe a == _spiderEnv_toUnsubscribe b
2021− then Just $ unsafeCoerce Refl -- This unsafeCoerce is safe because the same SpiderEnv can't have two different 'x' arguments
2024−unsafeNewSpiderEnv :: forall x. IO (SpiderEnv x)
2025−unsafeNewSpiderEnv = do
2026− toUnsubscribe <- newIORef []
2028− cleanups <- newIORef []
2030− depthRef <- newIORef 0
2033− { _spiderEnv_toUnsubscribe = toUnsubscribe
2034− , _spiderEnv_lock = lock
2035− , _spiderEnv_cleanups = cleanups
2037− , _spiderEnv_depth = depthRef
2041−newSpiderEnv :: IO (Some SpiderEnv)
2042−newSpiderEnv = Some.This <$> unsafeNewSpiderEnv
2044−newtype SpiderPullM x a = SpiderPullM { runSpiderPullM :: BehaviorM a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2046−newtype SpiderPushM x a = SpiderPushM { runSpiderPushM :: ComputeM a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2504+-- | The default, global Spider environment
2047−
2505+type Spider = SpiderTimeline Global
2048−instance R.Reflex (SpiderEnv x) where
2049− newtype Behavior (SpiderEnv x) a = SpiderBehavior { unSpiderBehavior :: Behavior a }
2050− newtype Event (SpiderEnv x) a = SpiderEvent { unSpiderEvent :: Event a }
2051− newtype Dynamic (SpiderEnv x) a = SpiderDynamic { unSpiderDynamic :: Dynamic Identity a } deriving (Functor, Applicative, Monad)
2052− newtype Incremental (SpiderEnv x) p a = SpiderIncremental { unSpiderIncremental :: Dynamic p a }
2053− type PullM (SpiderEnv x) = SpiderPullM x
2054− type PushM (SpiderEnv x) = SpiderPushM x
2055− {-# INLINABLE never #-}
2056− never = SpiderEvent EventNever
2057− {-# INLINABLE constant #-}
2058− constant = SpiderBehavior . BehaviorConst
2059− {-# INLINABLE push #-}
2060− push f = SpiderEvent . push (coerce f) . unSpiderEvent
2061− {-# INLINABLE pull #-}
2062− pull = SpiderBehavior . pull . coerce
2063− {-# INLINABLE merge #-}
2064− merge = SpiderEvent . merge . DynamicConst . (unsafeCoerce :: DMap k (R.Event (SpiderEnv x)) -> DMap k Event)
2065− {-# INLINABLE fan #-}
2066− fan e = R.EventSelector $ SpiderEvent . select (fan (unSpiderEvent e))
2067− {-# INLINABLE switch #-}
2068− switch = SpiderEvent . switch . (unsafeCoerce :: Behavior (R.Event (SpiderEnv x) a) -> Behavior (Event a)) . unSpiderBehavior
2069− {-# INLINABLE coincidence #-}
2070− coincidence = SpiderEvent . coincidence . (unsafeCoerce :: Event (R.Event (SpiderEnv x) a) -> Event (Event a)) . unSpiderEvent
2071− {-# INLINABLE current #-}
2072− current = SpiderBehavior . current . unSpiderDynamic
2073− {-# INLINABLE updated #-}
2074− updated = SpiderEvent . fmap runIdentity . updated . unSpiderDynamic
2075− {-# INLINABLE unsafeBuildDynamic #-}
2076− unsafeBuildDynamic readV0 v' = SpiderDynamic $ DynamicDynIdentity $ unsafeDyn (coerce readV0) $ addIdentity $ unSpiderEvent v'
2077− {-# INLINABLE unsafeBuildIncremental #-}
2078− unsafeBuildIncremental readV0 dv = SpiderIncremental $ DynamicDyn $ unsafeDyn (coerce readV0) $ unSpiderEvent dv
2079− {-# INLINABLE mergeIncremental #-}
2080− mergeIncremental = SpiderEvent . merge . (unsafeCoerce :: Dynamic R.PatchDMap (DMap k (R.Event (SpiderEnv x))) -> Dynamic R.PatchDMap (DMap k Event)) . unSpiderIncremental
2081− {-# INLINABLE currentIncremental #-}
2082− currentIncremental = SpiderBehavior . current . unSpiderIncremental
2083− {-# INLINABLE updatedIncremental #-}
2084− updatedIncremental = SpiderEvent . updated . unSpiderIncremental
2085− {-# INLINABLE incrementalToDynamic #-}
2086− incrementalToDynamic (SpiderIncremental i) = SpiderDynamic $ DynamicDynIdentity $ unsafeDyn (readBehaviorUntracked $ current i) $ flip push (updated i) $ \p -> do
2087− c <- readBehaviorUntracked $ current i
2088− return $ fmap Identity $ R.apply p c --TODO: Avoid the redundant 'apply'
2090−instance R.MonadSample (SpiderEnv x) (EventM x) where
2507+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (EventM x) where
2091 {-# INLINABLE sample #-}
2508 {-# INLINABLE sample #-}
2092 sample (SpiderBehavior b) = readBehaviorUntracked b
2509 sample (SpiderBehavior b) = readBehaviorUntracked b
2094−instance R.MonadHold (SpiderEnv x) (EventM x) where
2511+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (EventM x) where
2095 {-# INLINABLE hold #-}
2512 {-# INLINABLE hold #-}
2096 hold = holdSpiderEventM
2513 hold = holdSpiderEventM
2097 {-# INLINABLE holdDyn #-}
2514 {-# INLINABLE holdDyn #-}
2098 holdDyn = holdDynSpiderEventM
2515 holdDyn = holdDynSpiderEventM
2099 {-# INLINABLE holdIncremental #-}
2516 {-# INLINABLE holdIncremental #-}
2100 holdIncremental = holdIncrementalSpiderEventM
2517 holdIncremental = holdIncrementalSpiderEventM
2518+ {-# INLINABLE buildDynamic #-}
2519+ buildDynamic = buildDynamicSpiderEventM
2520+ {-# INLINABLE headE #-}
2521+ headE = R.slowHeadE
2522+-- headE (SpiderEvent e) = SpiderEvent <$> Reflex.Spider.Internal.headE e
2523+ {-# INLINABLE now #-}
2524+ now = nowSpiderEventM
2526+instance Reflex.Class.MonadSample (SpiderTimeline x) (SpiderPullM x) where
2527+ {-# INLINABLE sample #-}
2528+ sample = coerce . readBehaviorTracked . unSpiderBehavior
2530+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderPushM x) where
2531+ {-# INLINABLE sample #-}
2532+ sample (SpiderBehavior b) = SpiderPushM $ readBehaviorUntracked b
2534+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (SpiderPushM x) where
2535+ {-# INLINABLE hold #-}
2536+ hold v0 e = Reflex.Class.current <$> Reflex.Class.holdDyn v0 e
2537+ {-# INLINABLE holdDyn #-}
2538+ holdDyn v0 (SpiderEvent e) = SpiderPushM $ fmap (SpiderDynamic . dynamicHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce e
2539+ {-# INLINABLE holdIncremental #-}
2540+ holdIncremental v0 (SpiderEvent e) = SpiderPushM $ SpiderIncremental . dynamicHold <$> Reflex.Spider.Internal.hold v0 e
2541+ {-# INLINABLE buildDynamic #-}
2542+ buildDynamic getV0 (SpiderEvent e) = SpiderPushM $ fmap (SpiderDynamic . dynamicDynIdentity) $ Reflex.Spider.Internal.buildDynamic (coerce getV0) $ coerce e
2543+ {-# INLINABLE headE #-}
2544+ headE = R.slowHeadE
2545+-- headE (SpiderEvent e) = SpiderPushM $ SpiderEvent <$> Reflex.Spider.Internal.headE e
2546+ {-# INLINABLE now #-}
2547+ now = SpiderPushM nowSpiderEventM
2550+instance HasSpiderTimeline x => Monad (Reflex.Class.Dynamic (SpiderTimeline x)) where
2551+ {-# INLINE return #-}
2553+ {-# INLINE (>>=) #-}
2554+ x >>= f = SpiderDynamic $ dynamicDynIdentity $ newJoinDyn $ newMapDyn (unSpiderDynamic . f) $ unSpiderDynamic x
2555+ {-# INLINE (>>) #-}
2557+#if !MIN_VERSION_base(4,13,0)
2558+ {-# INLINE fail #-}
2559+ fail _ = error "Dynamic does not support 'fail'"
2562+{-# INLINABLE newJoinDyn #-}
2563+newJoinDyn :: HasSpiderTimeline x => DynamicS x (Identity (DynamicS x (Identity a))) -> Reflex.Spider.Internal.Dyn x (Identity a)
2565+ let readV0 = readBehaviorTracked . dynamicCurrent =<< readBehaviorTracked (dynamicCurrent d)
2566+ eOuter = Reflex.Spider.Internal.push (fmap (Just . Identity) . readBehaviorUntracked . dynamicCurrent . runIdentity) $ dynamicUpdated d
2567+ eInner = Reflex.Spider.Internal.switch $ dynamicUpdated <$> dynamicCurrent d
2568+ eBoth = Reflex.Spider.Internal.coincidence $ dynamicUpdated . runIdentity <$> dynamicUpdated d
2569+ v' = unSpiderEvent $ Reflex.Class.leftmost $ map SpiderEvent [eBoth, eOuter, eInner]
2570+ in Reflex.Spider.Internal.unsafeBuildDynamic readV0 v'
2572+instance HasSpiderTimeline x => Functor (Reflex.Class.Dynamic (SpiderTimeline x)) where
2573+ fmap = mapDynamicSpider
2574+ x <$ d = R.unsafeBuildDynamic (return x) $ x <$ R.updated d
2576+mapDynamicSpider :: HasSpiderTimeline x => (a -> b) -> Reflex.Class.Dynamic (SpiderTimeline x) a -> Reflex.Class.Dynamic (SpiderTimeline x) b
2577+mapDynamicSpider f = SpiderDynamic . newMapDyn f . unSpiderDynamic
2578+{-# INLINE [1] mapDynamicSpider #-}
2580+instance HasSpiderTimeline x => Applicative (Reflex.Class.Dynamic (SpiderTimeline x)) where
2581+ pure = SpiderDynamic . dynamicConst
2582+#if MIN_VERSION_base(4,10,0)
2583+ liftA2 f a b = SpiderDynamic $ Reflex.Spider.Internal.zipDynWith f (unSpiderDynamic a) (unSpiderDynamic b)
2585+ SpiderDynamic a <*> SpiderDynamic b = SpiderDynamic $ Reflex.Spider.Internal.zipDynWith ($) a b
2586+ a *> b = R.unsafeBuildDynamic (R.sample $ R.current b) $ R.leftmost [R.updated b, R.tag (R.current b) $ R.updated a]
2587+ (<*) = flip (*>) -- There are no effects, so order doesn't matter
2102−holdSpiderEventM :: a -> R.Event (SpiderEnv x) a -> EventM x (R.Behavior (SpiderEnv x) a)
2589+holdSpiderEventM :: HasSpiderTimeline x => a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Behavior (SpiderTimeline x) a)
2103−holdSpiderEventM v0 e = liftM (SpiderBehavior . BehaviorHoldIdentity) $ hold v0 $ addIdentity $ unSpiderEvent e
2590+holdSpiderEventM v0 e = fmap (SpiderBehavior . behaviorHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2105−holdDynSpiderEventM :: a -> R.Event (SpiderEnv x) a -> EventM x (R.Dynamic (SpiderEnv x) a)
2592+holdDynSpiderEventM :: HasSpiderTimeline x => a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Dynamic (SpiderTimeline x) a)
2106−holdDynSpiderEventM v0 e = liftM (SpiderDynamic . DynamicHoldIdentity) $ hold v0 $ addIdentity $ unSpiderEvent e
2593+holdDynSpiderEventM v0 e = fmap (SpiderDynamic . dynamicHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2108−holdIncrementalSpiderEventM :: R.Patch p => a -> R.Event (SpiderEnv x) (p a) -> EventM x (R.Incremental (SpiderEnv x) p a)
2595+holdIncrementalSpiderEventM :: (HasSpiderTimeline x, Patch p) => PatchTarget p -> Reflex.Class.Event (SpiderTimeline x) p -> EventM x (Reflex.Class.Incremental (SpiderTimeline x) p)
2109−holdIncrementalSpiderEventM v0 e = liftM (SpiderIncremental . DynamicHold) $ hold v0 $ unSpiderEvent e
2596+holdIncrementalSpiderEventM v0 e = fmap (SpiderIncremental . dynamicHold) $ Reflex.Spider.Internal.hold v0 $ unSpiderEvent e
2598+buildDynamicSpiderEventM :: HasSpiderTimeline x => SpiderPushM x a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Dynamic (SpiderTimeline x) a)
2599+buildDynamicSpiderEventM getV0 e = fmap (SpiderDynamic . dynamicDynIdentity) $ Reflex.Spider.Internal.buildDynamic (coerce getV0) $ coerce $ unSpiderEvent e
2111−instance R.MonadHold (SpiderEnv x) (SpiderHost x) where
2601+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (SpiderHost x) where
2112 {-# INLINABLE hold #-}
2602 {-# INLINABLE hold #-}
2113− hold v0 e = R.runHostFrame $ R.hold v0 e
2603+ hold v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.hold v0 e
2114 {-# INLINABLE holdDyn #-}
2604 {-# INLINABLE holdDyn #-}
2115− holdDyn v0 e = R.runHostFrame $ R.holdDyn v0 e
2605+ holdDyn v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.holdDyn v0 e
2116 {-# INLINABLE holdIncremental #-}
2606 {-# INLINABLE holdIncremental #-}
2117− holdIncremental v0 e = R.runHostFrame $ R.holdIncremental v0 e
2607+ holdIncremental v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.holdIncremental v0 e
2608+ {-# INLINABLE buildDynamic #-}
2609+ buildDynamic getV0 e = runFrame . runSpiderHostFrame $ Reflex.Class.buildDynamic getV0 e
2610+ {-# INLINABLE headE #-}
2611+ headE e = runFrame . runSpiderHostFrame $ Reflex.Class.headE e
2612+ {-# INLINABLE now #-}
2613+ now = runFrame . runSpiderHostFrame $ Reflex.Class.now
2616+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderHostFrame x) where
2617+ sample = SpiderHostFrame . readBehaviorUntracked . unSpiderBehavior --TODO: This can cause problems with laziness, so we should get rid of it if we can
2619+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (SpiderHostFrame x) where
2620+ {-# INLINABLE hold #-}
2621+ hold v0 e = SpiderHostFrame $ fmap (SpiderBehavior . behaviorHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2622+ {-# INLINABLE holdDyn #-}
2623+ holdDyn v0 e = SpiderHostFrame $ fmap (SpiderDynamic . dynamicHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2624+ {-# INLINABLE holdIncremental #-}
2625+ holdIncremental v0 e = SpiderHostFrame $ fmap (SpiderIncremental . dynamicHold) $ Reflex.Spider.Internal.hold v0 $ unSpiderEvent e
2626+ {-# INLINABLE buildDynamic #-}
2627+ buildDynamic getV0 e = SpiderHostFrame $ fmap (SpiderDynamic . dynamicDynIdentity) $ Reflex.Spider.Internal.buildDynamic (coerce getV0) $ coerce $ unSpiderEvent e
2628+ {-# INLINABLE headE #-}
2629+ headE = R.slowHeadE
2630+-- headE (SpiderEvent e) = SpiderHostFrame $ SpiderEvent <$> Reflex.Spider.Internal.headE e
2631+ {-# INLINABLE now #-}
2632+ now = SpiderHostFrame Reflex.Class.now
2119−instance R.MonadSample (SpiderEnv x) (SpiderHost x) where
2634+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderHost x) where
2120 {-# INLINABLE sample #-}
2635 {-# INLINABLE sample #-}
2121 sample = runFrame . readBehaviorUntracked . unSpiderBehavior
2636 sample = runFrame . readBehaviorUntracked . unSpiderBehavior
2123−instance R.MonadSample (SpiderEnv x) (SpiderPullM x) where
2638+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2124− {-# INLINABLE sample #-}
2125− sample = coerce . readBehaviorTracked . unSpiderBehavior
2127−instance R.MonadSample (SpiderEnv x) (SpiderPushM x) where
2128 {-# INLINABLE sample #-}
2639 {-# INLINABLE sample #-}
2129− sample (SpiderBehavior b) = SpiderPushM $ readBehaviorUntracked b
2640+ sample = Reflex.Spider.Internal.ReadPhase . Reflex.Class.sample
2131−instance R.MonadHold (SpiderEnv x) (SpiderPushM x) where
2642+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2132 {-# INLINABLE hold #-}
2643 {-# INLINABLE hold #-}
2133− hold v0 e = R.current <$> R.holdDyn v0 e
2644+ hold v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.hold v0 e
2134 {-# INLINABLE holdDyn #-}
2645 {-# INLINABLE holdDyn #-}
2135− holdDyn v0 (SpiderEvent e) = SpiderPushM $ liftM (SpiderDynamic . DynamicHoldIdentity) $ hold v0 $ addIdentity e
2646+ holdDyn v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.holdDyn v0 e
2136 {-# INLINABLE holdIncremental #-}
2647 {-# INLINABLE holdIncremental #-}
2137− holdIncremental v0 (SpiderEvent e) = SpiderPushM $ liftM (SpiderIncremental . DynamicHold) $ hold v0 e
2648+ holdIncremental v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.holdIncremental v0 e
2649+ {-# INLINABLE buildDynamic #-}
2650+ buildDynamic getV0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.buildDynamic getV0 e
2651+ {-# INLINABLE headE #-}
2652+ headE e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.headE e
2653+ {-# INLINABLE now #-}
2654+ now = Reflex.Spider.Internal.ReadPhase Reflex.Class.now
2139−data RootTrigger a = forall k. GCompare k => RootTrigger (SubscriberList a, IORef (DMap k Identity), k a)
2656+--------------------------------------------------------------------------------
2140−newtype SpiderEventHandle a = SpiderEventHandle { unSpiderEventHandle :: EventSubscription a }
2657+-- Deprecated items
2658+--------------------------------------------------------------------------------
2660+-- | 'SpiderEnv' is the old name for 'SpiderTimeline'
2661+{-# DEPRECATED SpiderEnv "Use 'SpiderTimelineEnv' instead" #-}
2662+type SpiderEnv = SpiderTimeline
2142−instance R.MonadSubscribeEvent (SpiderEnv x) (SpiderHostFrame x) where
2663+instance HasSpiderTimeline x => Reflex.Host.Class.MonadSubscribeEvent (SpiderTimeline x) (SpiderHostFrame x) where
2143 {-# INLINABLE subscribeEvent #-}
2664 {-# INLINABLE subscribeEvent #-}
2144 subscribeEvent e = SpiderHostFrame $ do
2665 subscribeEvent e = SpiderHostFrame $ do
2145− subscription <- subscribe (unSpiderEvent e) SubscriberHandle --TODO: Unsubscribe eventually (manually and/or with weak ref)
2666+ --TODO: Unsubscribe eventually (manually and/or with weak ref)
2667+ val <- liftIO $ newIORef Nothing
2668+ subscription <- subscribe (unSpiderEvent e) $ Subscriber
2669+ { subscriberPropagate = \a -> do
2670+ liftIO $ writeIORef val $ Just a
2672+ , subscriberInvalidateHeight = \_ -> return ()
2673+ , subscriberRecalculateHeight = \_ -> return ()
2146− return $ SpiderEventHandle subscription
2675+ return $ SpiderEventHandle
2147−
2676+ { spiderEventHandleSubscription = subscription
2677+ , spiderEventHandleValue = val
2148−instance R.ReflexHost (SpiderEnv x) where
2680+instance HasSpiderTimeline x => Reflex.Host.Class.ReflexHost (SpiderTimeline x) where
2149− type EventTrigger (SpiderEnv x) = RootTrigger
2681+ type EventTrigger (SpiderTimeline x) = RootTrigger x
2150− type EventHandle (SpiderEnv x) = SpiderEventHandle
2682+ type EventHandle (SpiderTimeline x) = SpiderEventHandle x
2151− type HostFrame (SpiderEnv x) = SpiderHostFrame x
2683+ type HostFrame (SpiderTimeline x) = SpiderHostFrame x
2153−instance R.MonadReadEvent (SpiderEnv x) (ReadPhase x) where
2685+instance HasSpiderTimeline x => Reflex.Host.Class.MonadReadEvent (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2154− {-# INLINABLE readEvent #-}
2686+ {-# NOINLINE readEvent #-}
2155− readEvent h = ReadPhase $ liftM (fmap return) $ liftIO $ do
2687+ readEvent h = Reflex.Spider.Internal.ReadPhase $ fmap (fmap return) $ liftIO $ do
2156− let EventSubscription sln subscribed = unSpiderEventHandle h
2688+ result <- readIORef $ spiderEventHandleValue h
2157− result <- readEventSubscribed subscribed
2158− touch sln
2689+ touch h
2159 return result
2690 return result
2692+instance HasSpiderTimeline x => Reflex.Host.Class.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHost x) where
2693+ newEventWithTrigger = SpiderHost . fmap SpiderEvent . newEventWithTriggerIO
2694+ newFanEventWithTrigger f = SpiderHost $ do
2695+ es <- newFanEventWithTriggerIO f
2696+ return $ Reflex.Class.EventSelector $ SpiderEvent . Reflex.Spider.Internal.select es
2698+instance HasSpiderTimeline x => Reflex.Host.Class.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHostFrame x) where
2699+ newEventWithTrigger = SpiderHostFrame . EventM . liftIO . fmap SpiderEvent . newEventWithTriggerIO
2700+ newFanEventWithTrigger f = SpiderHostFrame $ EventM $ liftIO $ do
2701+ es <- newFanEventWithTriggerIO f
2702+ return $ Reflex.Class.EventSelector $ SpiderEvent . Reflex.Spider.Internal.select es
2704+instance HasSpiderTimeline x => Reflex.Host.Class.MonadSubscribeEvent (SpiderTimeline x) (SpiderHost x) where
2705+ {-# INLINABLE subscribeEvent #-}
2706+ subscribeEvent = runFrame . runSpiderHostFrame . Reflex.Host.Class.subscribeEvent
2708+instance HasSpiderTimeline x => Reflex.Host.Class.MonadReflexHost (SpiderTimeline x) (SpiderHost x) where
2709+ type ReadPhase (SpiderHost x) = Reflex.Spider.Internal.ReadPhase x
2710+ fireEventsAndRead es (Reflex.Spider.Internal.ReadPhase a) = run es a
2711+ runHostFrame = runFrame . runSpiderHostFrame
2713+unsafeNewSpiderTimelineEnv :: forall x. IO (SpiderTimelineEnv x)
2714+unsafeNewSpiderTimelineEnv = do
2718+ depthRef <- newIORef 0
2720+ return $ STE $ SpiderTimelineEnv
2721+ { _spiderTimeline_lock = lock
2722+ , _spiderTimeline_eventEnv = env
2724+ , _spiderTimeline_depth = depthRef
2728+-- | Create a new SpiderTimelineEnv
2729+newSpiderTimeline :: IO (Some SpiderTimelineEnv)
2730+newSpiderTimeline = withSpiderTimeline (pure . Some)
2732+data LocalSpiderTimeline (x :: Type) s
2734+instance Reifies s (SpiderTimelineEnv x) =>
2735+ HasSpiderTimeline (LocalSpiderTimeline x s) where
2736+ spiderTimeline = localSpiderTimeline Proxy $ reflect (Proxy :: Proxy s)
2740+ -> SpiderTimelineEnv x
2741+ -> SpiderTimelineEnv (LocalSpiderTimeline x s)
2742+localSpiderTimeline _ = coerce
2744+-- | Pass a new timeline to the given function.
2745+withSpiderTimeline :: (forall x. HasSpiderTimeline x => SpiderTimelineEnv x -> IO r) -> IO r
2746+withSpiderTimeline k = do
2747+ env <- unsafeNewSpiderTimelineEnv
2748+ reify env $ \s -> k $ localSpiderTimeline s env
2750+newtype SpiderPullM (x :: Type) a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2752+type ComputeM = EventM
2754+newtype SpiderPushM (x :: Type) a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2756+instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
2757+ {-# SPECIALIZE instance R.Reflex (SpiderTimeline Global) #-}
2758+ newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
2759+ newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
2760+ newtype Dynamic (SpiderTimeline x) a = SpiderDynamic { unSpiderDynamic :: DynamicS x (Identity a) } -- deriving (Functor, Applicative, Monad)
2761+ newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: DynamicS x p }
2762+ type PullM (SpiderTimeline x) = SpiderPullM x
2763+ type PushM (SpiderTimeline x) = SpiderPushM x
2764+ {-# INLINABLE never #-}
2765+ never = SpiderEvent eventNever
2766+ {-# INLINABLE constant #-}
2767+ constant = SpiderBehavior . behaviorConst
2768+ {-# INLINE push #-}
2769+ push f = SpiderEvent . push (coerce f) . unSpiderEvent
2770+ {-# INLINE pushCheap #-}
2771+ pushCheap f = SpiderEvent . pushCheap (coerce f) . unSpiderEvent
2772+ {-# INLINABLE pull #-}
2773+ pull = SpiderBehavior . pull . coerce
2774+ {-# INLINABLE fanG #-}
2775+ fanG e = R.EventSelectorG $ SpiderEvent . selectG (fanG (unSpiderEvent e))
2776+ {-# INLINABLE mergeG #-}
2778+ :: forall k2 (k :: k2 -> *) q (v :: k2 -> *). GCompare k
2779+ => (forall a. q a -> R.Event (SpiderTimeline x) (v a))
2781+ -> R.Event (SpiderTimeline x) (DMap k v)
2782+ mergeG nt = SpiderEvent . mergeG (unSpiderEvent #. nt) . dynamicConst
2783+ {-# INLINABLE switch #-}
2784+ switch = SpiderEvent . switch . (coerce :: Behavior x (R.Event (SpiderTimeline x) a) -> Behavior x (Event x a)) . unSpiderBehavior
2785+ {-# INLINABLE coincidence #-}
2786+ coincidence = SpiderEvent . coincidence . (coerce :: Event x (R.Event (SpiderTimeline x) a) -> Event x (Event x a)) . unSpiderEvent
2787+ {-# INLINABLE current #-}
2788+ current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
2789+ {-# INLINABLE updated #-}
2790+ updated = SpiderEvent #. dynamicUpdated .# fmap coerce . unSpiderDynamic
2791+ {-# INLINABLE unsafeBuildDynamic #-}
2792+ unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (coerce readV0) $ coerce $ unSpiderEvent v'
2793+ {-# INLINABLE unsafeBuildIncremental #-}
2794+ unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeBuildDynamic (coerce readV0) $ unSpiderEvent dv
2795+ {-# INLINABLE mergeIncrementalG #-}
2796+ mergeIncrementalG nt = SpiderEvent #. mergeG (coerce #. nt) .# unSpiderIncremental
2797+ {-# INLINABLE mergeIncrementalWithMoveG #-}
2798+ mergeIncrementalWithMoveG nt = SpiderEvent #. mergeWithMove (coerce #. nt) .# unSpiderIncremental
2799+ {-# INLINABLE currentIncremental #-}
2800+ currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
2801+ {-# INLINABLE updatedIncremental #-}
2802+ updatedIncremental = SpiderEvent . dynamicUpdated . unSpiderIncremental
2803+ {-# INLINABLE incrementalToDynamic #-}
2804+ incrementalToDynamic (SpiderIncremental i) = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (readBehaviorUntracked $ dynamicCurrent i) $ flip push (dynamicUpdated i) $ \p -> do
2805+ c <- readBehaviorUntracked $ dynamicCurrent i
2806+ return $ Identity <$> apply p c --TODO: Avoid the redundant 'apply'
2807+ eventCoercion Coercion = Coercion
2808+ behaviorCoercion Coercion = Coercion
2809+ dynamicCoercion Coercion = Coercion
2810+ incrementalCoercion Coercion Coercion = Coercion
2811+ {-# INLINABLE mergeIntIncremental #-}
2812+ mergeIntIncremental = SpiderEvent . mergeInt . coerce
2813+ {-# INLINABLE fanInt #-}
2814+ fanInt e = R.EventSelectorInt $ SpiderEvent . selectInt (fanInt (unSpiderEvent e))
2816+data RootTrigger x a = forall k. GCompare k => RootTrigger (WeakBag (Subscriber x a), IORef (DMap k Identity), k a)
2818+data SpiderEventHandle x a = SpiderEventHandle
2819+ { spiderEventHandleSubscription :: EventSubscription x
2820+ , spiderEventHandleValue :: IORef (Maybe a)
2161instance MonadRef (EventM x) where
2823instance MonadRef (EventM x) where
2162 type Ref (EventM x) = Ref IO
2824 type Ref (EventM x) = Ref IO
2163 {-# INLINABLE newRef #-}
2825 {-# INLINABLE newRef #-}
@@ -2171,7 +2833,8 @@ instance MonadAtomicRef (EventM x) where
2171 {-# INLINABLE atomicModifyRef #-}
2833 {-# INLINABLE atomicModifyRef #-}
2172 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2834 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2836+-- | The monad for actions that manipulate a Spider timeline identified by @x@
2174−newtype SpiderHost x a = SpiderHost { unSpiderHost :: ReaderT (SpiderEnv x) IO a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2837+newtype SpiderHost (x :: Type) a = SpiderHost { unSpiderHost :: IO a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2176instance Monad (SpiderHost x) where
2839instance Monad (SpiderHost x) where
2177 {-# INLINABLE (>>=) #-}
2840 {-# INLINABLE (>>=) #-}
@@ -2180,13 +2843,27 @@ instance Monad (SpiderHost x) where
2180 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2843 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2181 {-# INLINABLE return #-}
2844 {-# INLINABLE return #-}
2182 return x = SpiderHost $ return x
2845 return x = SpiderHost $ return x
2846+#if !MIN_VERSION_base(4,13,0)
2847+ {-# INLINABLE fail #-}
2848+ fail = MonadFail.fail
2851+instance MonadFail (SpiderHost x) where
2183 {-# INLINABLE fail #-}
2852 {-# INLINABLE fail #-}
2184− fail s = SpiderHost $ fail s
2853+ fail s = SpiderHost $ MonadFail.fail s
2855+-- | Run an action affecting the global Spider timeline; this will be guarded by
2856+-- a mutex for that timeline
2186runSpiderHost :: SpiderHost Global a -> IO a
2857runSpiderHost :: SpiderHost Global a -> IO a
2187−runSpiderHost (SpiderHost a) = runReaderT a globalSpiderEnv
2858+runSpiderHost (SpiderHost a) = a
2860+-- | Run an action affecting a given Spider timeline; this will be guarded by a
2861+-- mutex for that timeline
2862+runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimelineEnv x -> IO a
2863+runSpiderHostForTimeline (SpiderHost a) _ = a
2865+newtype SpiderHostFrame (x :: Type) a = SpiderHostFrame { runSpiderHostFrame :: EventM x a }
2189−newtype SpiderHostFrame x a = SpiderHostFrame { runSpiderHostFrame :: EventM x a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2866+ deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2191instance Monad (SpiderHostFrame x) where
2868instance Monad (SpiderHostFrame x) where
2192 {-# INLINABLE (>>=) #-}
2869 {-# INLINABLE (>>=) #-}
@@ -2195,30 +2872,21 @@ instance Monad (SpiderHostFrame x) where
2195 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2872 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2196 {-# INLINABLE return #-}
2873 {-# INLINABLE return #-}
2197 return x = SpiderHostFrame $ return x
2874 return x = SpiderHostFrame $ return x
2875+#if !MIN_VERSION_base(4,13,0)
2198 {-# INLINABLE fail #-}
2876 {-# INLINABLE fail #-}
2199 fail s = SpiderHostFrame $ fail s
2877 fail s = SpiderHostFrame $ fail s
2201−instance R.MonadSample (SpiderEnv x) (SpiderHostFrame x) where
2202− sample = SpiderHostFrame . readBehaviorUntracked . unSpiderBehavior --TODO: This can cause problems with laziness, so we should get rid of it if we can
2204−addIdentity :: Event a -> Event (Identity a)
2205−--addIdentity = fmap Identity
2206−addIdentity = unsafeCoerce
2208−instance R.MonadHold (SpiderEnv x) (SpiderHostFrame x) where
2880+instance NotReady (SpiderTimeline x) (SpiderHostFrame x) where
2209− {-# INLINABLE hold #-}
2881+ notReadyUntil _ = pure ()
2210− hold v0 e = SpiderHostFrame $ liftM (SpiderBehavior . BehaviorHoldIdentity) $ hold v0 $ addIdentity $ unSpiderEvent e
2882+ notReady = pure ()
2211− {-# INLINABLE holdDyn #-}
2212− holdDyn v0 e = SpiderHostFrame $ liftM (SpiderDynamic . DynamicHoldIdentity) $ hold v0 $ addIdentity $ unSpiderEvent e
2213− {-# INLINABLE holdIncremental #-}
2214− holdIncremental v0 e = SpiderHostFrame $ liftM (SpiderIncremental . DynamicHold) $ hold v0 $ unSpiderEvent e
2216−newEventWithTriggerIO :: forall a. (RootTrigger a -> IO (IO ())) -> IO (Event a)
2884+newEventWithTriggerIO :: forall x a. HasSpiderTimeline x => (RootTrigger x a -> IO (IO ())) -> IO (Event x a)
2217newEventWithTriggerIO f = do
2885newEventWithTriggerIO f = do
2218 es <- newFanEventWithTriggerIO $ \Refl -> f
2886 es <- newFanEventWithTriggerIO $ \Refl -> f
2219 return $ select es Refl
2887 return $ select es Refl
2221−newFanEventWithTriggerIO :: GCompare k => (forall a. k a -> RootTrigger a -> IO (IO ())) -> IO (EventSelector k)
2889+newFanEventWithTriggerIO :: (HasSpiderTimeline x, GCompare k) => (forall a. k a -> RootTrigger x a -> IO (IO ())) -> IO (EventSelector x k)
2222newFanEventWithTriggerIO f = do
2890newFanEventWithTriggerIO f = do
2223 occRef <- newIORef DMap.empty
2891 occRef <- newIORef DMap.empty
2224 subscribedRef <- newIORef DMap.empty
2892 subscribedRef <- newIORef DMap.empty
@@ -2227,47 +2895,9 @@ newFanEventWithTriggerIO f = do
2227 , rootSubscribed = subscribedRef
2895 , rootSubscribed = subscribedRef
2228 , rootInit = f
2896 , rootInit = f
2230− return $ EventSelector $ \k -> EventRoot k r
2898+ return $ EventSelector $ \k -> eventRoot k r
2232−instance R.MonadReflexCreateTrigger (SpiderEnv x) (SpiderHost x) where
2233− newEventWithTrigger = SpiderHost . lift . liftM SpiderEvent . newEventWithTriggerIO
2234− newFanEventWithTrigger f = SpiderHost $ lift $ do
2235− es <- newFanEventWithTriggerIO f
2236− return $ R.EventSelector $ SpiderEvent . select es
2238−instance R.MonadReflexCreateTrigger (SpiderEnv x) (SpiderHostFrame x) where
2239− newEventWithTrigger = SpiderHostFrame . EventM . liftIO . liftM SpiderEvent . newEventWithTriggerIO
2240− newFanEventWithTrigger f = SpiderHostFrame $ EventM $ liftIO $ do
2241− es <- newFanEventWithTriggerIO f
2242− return $ R.EventSelector $ SpiderEvent . select es
2244−instance R.MonadSubscribeEvent (SpiderEnv x) (SpiderHost x) where
2245− {-# INLINABLE subscribeEvent #-}
2246− subscribeEvent = subscribeEventSpiderHost
2248−subscribeEventSpiderHost :: R.Event (SpiderEnv x) a -> SpiderHost x (R.EventHandle (SpiderEnv x) a)
2249−subscribeEventSpiderHost e = do
2250− subscription <- runFrame $ subscribe (unSpiderEvent e) SubscriberHandle --TODO: Unsubscribe eventually (manually and/or with weak ref)
2251− return $ SpiderEventHandle subscription
2253−newtype ReadPhase x a = ReadPhase { runReadPhase :: ResultM x a } deriving (Functor, Applicative, Monad, MonadFix)
2255−instance R.MonadSample (SpiderEnv x) (ReadPhase x) where
2256− {-# INLINABLE sample #-}
2257− sample = ReadPhase . R.sample
2259−instance R.MonadHold (SpiderEnv x) (ReadPhase x) where
2900+newtype ReadPhase x a = ReadPhase (ResultM x a) deriving (Functor, Applicative, Monad, MonadFix)
2260− {-# INLINABLE hold #-}
2261− hold v0 e = ReadPhase $ R.hold v0 e
2262− {-# INLINABLE holdDyn #-}
2263− holdDyn v0 e = ReadPhase $ R.holdDyn v0 e
2264− {-# INLINABLE holdIncremental #-}
2265− holdIncremental v0 e = ReadPhase $ R.holdIncremental v0 e
2267−instance R.MonadReflexHost (SpiderEnv x) (SpiderHost x) where
2268− type ReadPhase (SpiderHost x) = ReadPhase x
2269− fireEventsAndRead es (ReadPhase a) = run es a
2270− runHostFrame = runFrame . runSpiderHostFrame
2272instance MonadRef (SpiderHost x) where
2902instance MonadRef (SpiderHost x) where
2273 type Ref (SpiderHost x) = Ref IO
2903 type Ref (SpiderHost x) = Ref IO
@@ -2286,3 +2916,15 @@ instance MonadRef (SpiderHostFrame x) where
2287instance MonadAtomicRef (SpiderHostFrame x) where
2917instance MonadAtomicRef (SpiderHostFrame x) where
2288 atomicModifyRef r = SpiderHostFrame . atomicModifyRef r
2918 atomicModifyRef r = SpiderHostFrame . atomicModifyRef r
2920+instance PrimMonad (SpiderHostFrame x) where
2921+ type PrimState (SpiderHostFrame x) = PrimState IO
2922+ primitive = SpiderHostFrame . EventM . primitive
2924+instance NotReady (SpiderTimeline x) (SpiderHost x) where
2925+ notReadyUntil _ = return ()
2926+ notReady = return ()
2928+instance HasSpiderTimeline x => NotReady (SpiderTimeline x) (PerformEventT (SpiderTimeline x) (SpiderHost x)) where
2929+ notReadyUntil _ = return ()
2930+ notReady = return ()