@@ -9,40 +9,49 @@
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 RoleAnnotations #-}
13{-# LANGUAGE RoleAnnotations #-}
17{-# LANGUAGE ScopedTypeVariables #-}
14{-# LANGUAGE ScopedTypeVariables #-}
18{-# LANGUAGE TypeFamilies #-}
15{-# LANGUAGE TypeFamilies #-}
19{-# LANGUAGE TypeOperators #-}
16{-# LANGUAGE TypeOperators #-}
20{-# LANGUAGE UndecidableInstances #-}
17{-# LANGUAGE UndecidableInstances #-}
18+{-# LANGUAGE PolyKinds #-}
19+{-# LANGUAGE DeriveFunctor #-}
20+{-# LANGUAGE StandaloneDeriving #-}
21+{-# LANGUAGE InstanceSigs #-}
22+{-# LANGUAGE MultiWayIf #-}
21#ifdef USE_REFLEX_OPTIMIZER
24#ifdef USE_REFLEX_OPTIMIZER
22{-# OPTIONS_GHC -fplugin=Reflex.Optimizer #-}
25{-# OPTIONS_GHC -fplugin=Reflex.Optimizer #-}
24−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
27+{-# OPTIONS_GHC -Wunused-binds #-}
25−{-# OPTIONS_GHC -fno-warn-orphans #-}
27-- | This module is the implementation of the 'Spider' 'Reflex' engine. It uses
28-- | This module is the implementation of the 'Spider' 'Reflex' engine. It uses
28-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
29-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
29module Reflex.Spider.Internal (module Reflex.Spider.Internal) where
30module Reflex.Spider.Internal (module Reflex.Spider.Internal) where
31−import Control.Applicative
32+#if MIN_VERSION_base(4,10,0)
33+import Control.Applicative (liftA2)
32import Control.Concurrent
35import Control.Concurrent
33import Control.Exception
36import Control.Exception
34−import Control.Monad hiding (forM, forM_, mapM, mapM_, sequence)
37+import Control.Monad hiding (forM, forM_, mapM, mapM_)
35import Control.Monad.Exception
38import Control.Monad.Exception
36−import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_, sequence)
39+import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_)
37import Control.Monad.Primitive
40import Control.Monad.Primitive
38−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
39import Control.Monad.Ref
44import Control.Monad.Ref
45+import Control.Monad.Fail (MonadFail)
46+import qualified Control.Monad.Fail as MonadFail
40import Data.Align
47import Data.Align
41import Data.Coerce
48import Data.Coerce
42−import Data.Dependent.Map (DMap, DSum (..))
49+import Data.Dependent.Map (DMap)
43import qualified Data.Dependent.Map as DMap
50import qualified Data.Dependent.Map as DMap
51+import Data.Dependent.Sum (DSum (..))
52+import Data.FastMutableIntMap (FastMutableIntMap, PatchIntMap (..))
53+import qualified Data.FastMutableIntMap as FastMutableIntMap
44import Data.Foldable hiding (concat, elem, sequence_)
54import Data.Foldable hiding (concat, elem, sequence_)
46import Data.Functor.Constant
55import Data.Functor.Constant
47import Data.Functor.Misc
56import Data.Functor.Misc
48import Data.Functor.Product
57import Data.Functor.Product
@@ -50,56 +59,73 @@ import Data.GADT.Compare
50import Data.IntMap.Strict (IntMap)
59import Data.IntMap.Strict (IntMap)
51import qualified Data.IntMap.Strict as IntMap
60import qualified Data.IntMap.Strict as IntMap
52import Data.IORef
61import Data.IORef
53−import Data.List hiding (foldl')
62+import Data.Kind (Type)
54−import Data.Maybe
63+import Data.Maybe hiding (mapMaybe)
55−import Data.Monoid ((<>))
64+import Data.Monoid (mempty, (<>))
56import Data.Proxy
65import Data.Proxy
57import Data.These
66import Data.These
58import Data.Traversable
67import Data.Traversable
59−import Data.Word
68+import Data.Type.Equality ((:~:)(Refl))
60−import GHC.Exts
69+import Data.Witherable (Filterable, mapMaybe)
70+import GHC.Exts hiding (toList)
61import GHC.IORef (IORef (..))
71import GHC.IORef (IORef (..))
62import GHC.Stack
72import GHC.Stack
63−import Reflex.FunctorMaybe
73+import Reflex.FastWeak
64import System.IO.Unsafe
74import System.IO.Unsafe
65import System.Mem.Weak
75import System.Mem.Weak
66import 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 (..))
68#ifdef DEBUG_CYCLES
87#ifdef DEBUG_CYCLES
69import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
88import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
70import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
91import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
71import qualified Data.List.NonEmpty as NonEmpty
92import qualified Data.List.NonEmpty as NonEmpty
72−import Data.Monoid (mempty)
73import Data.Tree (Forest, Tree (..), drawForest)
93import Data.Tree (Forest, Tree (..), drawForest)
74−#endif
94+import Data.List (isPrefixOf)
96+import Data.FastWeakBag (FastWeakBag, FastWeakBagTicket)
97+import qualified Data.FastWeakBag as FastWeakBag
76−import Data.WeakBag (WeakBag, WeakBagTicket)
77−import qualified Data.WeakBag as WeakBag
78−#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
79import Data.Reflection
99import Data.Reflection
80−import Data.Some (Some)
100+import Data.Some (Some(Some))
81−import qualified Data.Some as Some
82import Data.Type.Coercion
101import Data.Type.Coercion
102+import Data.Profunctor.Unsafe ((#.), (.#))
103+import Data.WeakBag (WeakBag, WeakBagTicket, _weakBag_children)
104+import qualified Data.WeakBag as WeakBag
83import qualified Reflex.Class
105import qualified Reflex.Class
84import qualified Reflex.Class as R
106import qualified Reflex.Class as R
85import qualified Reflex.Host.Class
107import qualified Reflex.Host.Class
86−#endif
108+import Reflex.NotReady.Class
87−import Reflex.Patch
109+import Data.Patch
88−
110+import qualified Data.Patch.DMapWithMove as PatchDMapWithMove
89−-- Note: must come last to silence warnings due to AMP on GHC < 7.10
111+import Reflex.PerformEvent.Base (PerformEventT)
90−import Prelude hiding (any, concat, mapM, mapM_, sequence)
92#ifdef DEBUG_TRACE_EVENTS
113#ifdef DEBUG_TRACE_EVENTS
93−import System.IO (stderr)
94import qualified Data.ByteString.Char8 as BS8
114import qualified Data.ByteString.Char8 as BS8
115+import System.IO (stderr)
116+import Data.List (isPrefixOf)
97−#ifdef DEBUG_TRACE_EVENTS
119+-- TODO stdout might not be the best channel for debug output
120+debugStrLn :: String -> IO ()
121+debugStrLn = putStrLn
123+#ifdef DEBUG_TRACE_EVENTS
99withStackOneLine :: (BS8.ByteString -> a) -> a
124withStackOneLine :: (BS8.ByteString -> a) -> a
100withStackOneLine expr = unsafePerformIO $ do
125withStackOneLine expr = unsafePerformIO $ do
101 stack <- currentCallStack
126 stack <- currentCallStack
102− return (expr (BS8.pack (unwords (reverse stack))))
127+ return (expr . BS8.pack . unwords . dropInternal . reverse $ stack)
128+ where dropInternal = filterStack "Reflex.Spider.Internal"
@@ -110,28 +136,42 @@ debugInvalidateHeight :: Bool
110debugInvalidate :: Bool
136debugInvalidate :: Bool
112#ifdef DEBUG
138#ifdef DEBUG
114#define DEBUG_NODEIDS
139#define DEBUG_NODEIDS
141+#ifdef DEBUG_TRACE_PROPAGATION
116debugPropagate = True
142debugPropagate = True
144+debugPropagate = False
147+#ifdef DEBUG_TRACE_HEIGHT
148+debugInvalidateHeight = True
118debugInvalidateHeight = False
150debugInvalidateHeight = False
153+#ifdef DEBUG_TRACE_INVALIDATION
120debugInvalidate = True
154debugInvalidate = True
156+debugInvalidate = False
122class HasNodeId a where
159class HasNodeId a where
123 getNodeId :: a -> Int
160 getNodeId :: a -> Int
125−instance HasNodeId (Hold x p a) where
162+instance HasNodeId (CacheSubscribed x a) where
126− getNodeId = holdNodeId
163+ getNodeId = _cacheSubscribed_nodeId
165+instance HasNodeId (FanInt x a) where
166+ getNodeId = _fanInt_nodeId
128−instance HasNodeId (PushSubscribed x a b) where
168+instance HasNodeId (Hold x p) where
129− getNodeId = pushSubscribedNodeId
169+ getNodeId = holdNodeId
131instance HasNodeId (SwitchSubscribed x a) where
171instance HasNodeId (SwitchSubscribed x a) where
132 getNodeId = switchSubscribedNodeId
172 getNodeId = switchSubscribedNodeId
134−instance HasNodeId (FanSubscribed x a) where
174+instance HasNodeId (FanSubscribed x v a) where
135 getNodeId = fanSubscribedNodeId
175 getNodeId = fanSubscribedNodeId
137instance HasNodeId (CoincidenceSubscribed x a) where
177instance HasNodeId (CoincidenceSubscribed x a) where
@@ -145,41 +185,16 @@ instance HasNodeId (Pull x a) where
146{-# INLINE showNodeId #-}
186{-# INLINE showNodeId #-}
147showNodeId :: HasNodeId a => a -> String
187showNodeId :: HasNodeId a => a -> String
148−showNodeId = ("#"<>) . show . getNodeId
188+showNodeId = showNodeId' . getNodeId
150−showSubscriberType :: Subscriber x a -> String
190+showNodeId' :: Int -> String
151−showSubscriberType = \case
191+showNodeId' = ("#"<>) . show
152− SubscriberPush _ _ -> "SubscriberPush"
192+
153− SubscriberMerge _ _ -> "SubscriberMerge"
154− SubscriberFan _ -> "SubscriberFan"
155− SubscriberMergeChange _ -> "SubscriberMergeChange"
156− SubscriberHold _ -> "SubscriberHold"
157− SubscriberHoldIdentity _ -> "SubscriberHoldIdentity"
158− SubscriberSwitch _ -> "SubscriberSwitch"
159− SubscriberCoincidenceOuter _ -> "SubscriberCoincidenceOuter"
160− SubscriberCoincidenceInner _ -> "SubscriberCoincidenceInner"
161− SubscriberHandle -> "SubscriberHandle"
163−showEventType :: Event x a -> String
164−showEventType = \case
165− EventRoot _ _ -> "EventRoot"
166− EventNever -> "EventNever"
167− EventPush _ -> "EventPush"
168− EventMerge _ -> "EventMerge"
169− EventFan _ _ -> "EventFan"
170− EventSwitch _ -> "EventSwitch"
171− EventCoincidence _ -> "EventCoincidence"
172− EventHold _ -> "EventHold"
173− EventDyn _ -> "EventDyn"
174− EventHoldIdentity _ -> "EventHoldIdentity"
175− EventDynIdentity _ -> "EventDynIdentity"
179debugPropagate = False
196debugPropagate = False
181debugInvalidateHeight = False
197debugInvalidateHeight = False
183debugInvalidate = False
198debugInvalidate = False
185-- 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
@@ -187,6 +202,10 @@ debugInvalidate = False
187showNodeId :: a -> String
202showNodeId :: a -> String
188showNodeId _ = ""
203showNodeId _ = ""
205+{-# INLINE showNodeId' #-}
206+showNodeId' :: Int -> String
192#ifdef DEBUG_NODEIDS
211#ifdef DEBUG_NODEIDS
@@ -196,12 +215,6 @@ nextNodeIdRef = unsafePerformIO $ newIORef 1
197newNodeId :: IO Int
216newNodeId :: IO Int
198newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
217newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
200−{-# NOINLINE unsafeNodeId #-}
201−unsafeNodeId :: a -> Int
202−unsafeNodeId a = unsafePerformIO $ do
207--------------------------------------------------------------------------------
220--------------------------------------------------------------------------------
@@ -237,85 +250,165 @@ subscribeAndRead = unEvent
237-- | Construct an 'Event' equivalent to that constructed by 'push', but with no
250-- | Construct an 'Event' equivalent to that constructed by 'push', but with no
238-- caching; if the computation function is very cheap, this is (much) more
251-- caching; if the computation function is very cheap, this is (much) more
239-- efficient than 'push'
252-- efficient than 'push'
240−{-# NOINLINE pushCheap #-}
253+{-# INLINE [1] pushCheap #-}
241pushCheap :: HasSpiderTimeline x => (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
254pushCheap :: HasSpiderTimeline x => (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
242−pushCheap f e = Event $ \sub -> do
255+pushCheap !f e = Event $ \sub -> do
243− (subscription, occ) <- subscribeAndRead e $ sub
256+ (subscription, occ) <- subscribeAndRead e $ debugSubscriber' "push" $ sub
244 { subscriberPropagate = \a -> do
257 { subscriberPropagate = \a -> do
245− mb <- runComputeM $ f a
258+ mb <- f a
246 mapM_ (subscriberPropagate sub) mb
259 mapM_ (subscriberPropagate sub) mb
248− occ' <- join <$> mapM (runComputeM . f) occ
261+ occ' <- join <$> mapM f occ
249 return (subscription, 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
251data CacheSubscribed x a
301data CacheSubscribed x a
252− = CacheSubscribed { _cacheSubscribed_subscribers :: {-# UNPACK #-} !(WeakBag (Subscriber x a))
302+ = CacheSubscribed { _cacheSubscribed_subscribers :: {-# UNPACK #-} !(FastWeakBag (Subscriber x a))
253− , _cacheSubscribed_weakSelf :: {-# UNPACK #-} !(IORef (Weak (CacheSubscribed x a)))
254 , _cacheSubscribed_parent :: {-# UNPACK #-} !(EventSubscription x)
303 , _cacheSubscribed_parent :: {-# UNPACK #-} !(EventSubscription x)
255− , _cacheSubscribed_cached :: {-# UNPACK #-} !(IORef (Maybe (CacheSubscribed x a)))
256 , _cacheSubscribed_occurrence :: {-# UNPACK #-} !(IORef (Maybe a))
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
259-- | Construct an 'Event' whose value is guaranteed not to be recomputed
325-- | Construct an 'Event' whose value is guaranteed not to be recomputed
260-- repeatedly
326-- repeatedly
262--TODO: Try a caching strategy where we subscribe directly to the parent when
328--TODO: Try a caching strategy where we subscribe directly to the parent when
263−--there's only one subscriber, and then build our own WeakBag only when a second
329+--there's only one subscriber, and then build our own FastWeakBag only when a second
264--subscriber joins
330--subscriber joins
265−{-# NOINLINE cacheEvent #-}
331+{-# NOINLINE [0] cacheEvent #-}
266−cacheEvent :: HasSpiderTimeline x => Event x a -> Event x a
332+cacheEvent :: forall x a. HasSpiderTimeline x => Event x a -> Event x a
267cacheEvent e =
333cacheEvent e =
268#ifdef DEBUG_TRACE_EVENTS
334#ifdef DEBUG_TRACE_EVENTS
269 withStackOneLine $ \callSite -> Event $
335 withStackOneLine $ \callSite -> Event $
273− let !mSubscribedRef = unsafeNewIORef e Nothing
339+ unsafePerformIO $ do
274− in \sub -> {-# SCC "cacheEvent" #-} do
340+ mSubscribedRef :: IORef (FastWeak (CacheSubscribed x a))
341+ <- newIORef emptyFastWeak
342+ pure $ \sub -> {-# SCC "cacheEvent" #-} do
275#ifdef DEBUG_TRACE_EVENTS
343#ifdef DEBUG_TRACE_EVENTS
276 unless (BS8.null callSite) $ liftIO $ BS8.hPutStrLn stderr callSite
344 unless (BS8.null callSite) $ liftIO $ BS8.hPutStrLn stderr callSite
278− mSubscribed <- liftIO $ readIORef mSubscribedRef
346+ subscribedTicket <- liftIO (readIORef mSubscribedRef >>= getFastWeakTicket) >>= \case
279− case mSubscribed of
347+ Just subscribedTicket -> return subscribedTicket
280− Just subscribed -> liftIO $ do
281− ticket <- WeakBag.insert sub (_cacheSubscribed_subscribers subscribed) (_cacheSubscribed_weakSelf subscribed) cleanupCacheSubscribed
282− occ <- readIORef $ _cacheSubscribed_occurrence subscribed
283− let es = EventSubscribed
284− { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ _cacheSubscribed_parent subscribed
285− , eventSubscribedRetained = toAny subscribed
287− return (EventSubscription (WeakBag.remove ticket >> touch ticket) es, occ)
288 Nothing -> do
348 Nothing -> do
289− weakSelf <- liftIO $ newIORef $ error "cacheEvent: weakSelf not yet intialized"
349+#ifdef DEBUG_NODEIDS
290− (subscribers, ticket) <- liftIO $ WeakBag.singleton sub weakSelf cleanupCacheSubscribed
350+ nodeId <- liftIO newNodeId
291− occRef <- liftIO $ newIORef undefined
351+#endif
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
292 (parentSub, occ) <- subscribeAndRead e $ Subscriber
357 (parentSub, occ) <- subscribeAndRead e $ Subscriber
293− { subscriberPropagate = \a -> do
358+#endif
294− liftIO $ writeIORef occRef $ Just a
359+ { subscriberPropagate = \a -> do
295− scheduleClear occRef
360+ liftIO $ writeIORef occRef (Just a)
296− propagate a subscribers
361+ scheduleClear occRef
297− , subscriberInvalidateHeight = \old -> do
362+ propagateFast a subscribers
298− WeakBag.traverse subscribers $ invalidateSubscriberHeight old
363+ , subscriberInvalidateHeight = FastWeakBag.traverse_ subscribers . invalidateSubscriberHeight
299− , subscriberRecalculateHeight = \new -> do
364+ , subscriberRecalculateHeight = FastWeakBag.traverse_ subscribers . recalculateSubscriberHeight
300− WeakBag.traverse subscribers $ recalculateSubscriberHeight new
365+ }
301− }
366+ when (isJust occ) $ do
302− liftIO $ writeIORef occRef occ
367+ liftIO $ writeIORef occRef occ -- Set the initial value of occRef; we don't need to do this if occ is Nothing
303− when (isJust occ) $ scheduleClear occRef
368+ scheduleClear occRef
304 let !subscribed = CacheSubscribed
369 let !subscribed = CacheSubscribed
305 { _cacheSubscribed_subscribers = subscribers
370 { _cacheSubscribed_subscribers = subscribers
306− , _cacheSubscribed_weakSelf = weakSelf
307 , _cacheSubscribed_parent = parentSub
371 , _cacheSubscribed_parent = parentSub
308− , _cacheSubscribed_cached = mSubscribedRef
309 , _cacheSubscribed_occurrence = occRef
372 , _cacheSubscribed_occurrence = occRef
374+ , _cacheSubscribed_nodeId = nodeId
311− liftIO $ writeIORef mSubscribedRef $ Just subscribed
377+ subscribedTicket <- liftIO $ mkFastWeakTicket subscribed
312− liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "PushSubscribed"
378+ liftIO $ writeIORef mSubscribedRef =<< getFastWeakTicketWeak subscribedTicket
313− return (EventSubscription (WeakBag.remove ticket >> touch ticket) (EventSubscribed (eventSubscribedHeightRef $ _eventSubscription_subscribed parentSub) (toAny subscribed)), occ)
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
315−cleanupCacheSubscribed :: CacheSubscribed x a -> IO ()
316−cleanupCacheSubscribed self = do
317− unsubscribe $ _cacheSubscribed_parent self
318− writeIORef (_cacheSubscribed_cached self) Nothing
320subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x)
413subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x)
321subscribe e s = fst <$> subscribeAndRead e s
414subscribe e s = fst <$> subscribeAndRead e s
@@ -327,13 +420,16 @@ wrap tag getSpecificSubscribed sub = do
327 let es = tag subd
420 let es = tag subd
328 return (EventSubscription (WeakBag.remove sln >> touch sln) es, occ)
421 return (EventSubscription (WeakBag.remove sln >> touch sln) es, occ)
330−eventRoot :: GCompare k => k a -> Root x k -> Event x a
423+eventRoot :: (GCompare k, HasSpiderTimeline x) => k a -> Root x k -> Event x a
331eventRoot !k !r = Event $ wrap eventSubscribedRoot $ liftIO . getRootSubscribed k r
424eventRoot !k !r = Event $ wrap eventSubscribedRoot $ liftIO . getRootSubscribed k r
426+subscribeAndReadNever :: EventM x (EventSubscription x, Maybe a)
427+subscribeAndReadNever = return (EventSubscription (return ()) eventSubscribedNever, Nothing)
333eventNever :: Event x a
429eventNever :: Event x a
334−eventNever = Event $ \_ -> return (EventSubscription (return ()) eventSubscribedNever, Nothing)
430+eventNever = Event $ const subscribeAndReadNever
336−eventFan :: (GCompare k, HasSpiderTimeline x) => k a -> Fan x k -> Event x a
432+eventFan :: (GCompare k, HasSpiderTimeline x) => k a -> Fan x k v -> Event x (v a)
337eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
433eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
339eventSwitch :: HasSpiderTimeline x => Switch x a -> Event x a
435eventSwitch :: HasSpiderTimeline x => Switch x a -> Event x a
@@ -342,14 +438,14 @@ eventSwitch !s = Event $ wrap eventSubscribedSwitch $ getSwitchSubscribed s
342eventCoincidence :: HasSpiderTimeline x => Coincidence x a -> Event x a
438eventCoincidence :: HasSpiderTimeline x => Coincidence x a -> Event x a
343eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
439eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
345−eventHold :: HasSpiderTimeline x => Hold x p -> Event x p
441+eventHold :: Hold x p -> Event x p
346eventHold !h = Event $ subscribeHoldEvent h
442eventHold !h = Event $ subscribeHoldEvent h
348eventDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Event x p
444eventDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Event x p
349eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
445eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
351{-# INLINE subscribeCoincidenceInner #-}
447{-# INLINE subscribeCoincidenceInner #-}
352−subscribeCoincidenceInner :: CanSubscribe x m => Event x a -> Height -> CoincidenceSubscribed x a -> m (Maybe a, Height, EventSubscribed x)
448+subscribeCoincidenceInner :: HasSpiderTimeline x => Event x a -> Height -> CoincidenceSubscribed x a -> EventM x (Maybe a, Height, EventSubscribed x)
353subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
449subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
354 subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
450 subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
355 (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
451 (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
@@ -368,16 +464,6 @@ data Subscriber x a = Subscriber
368 , subscriberRecalculateHeight :: !(Height -> IO ())
464 , subscriberRecalculateHeight :: !(Height -> IO ())
371−--TODO: Move this comment to WeakBag
372−-- These function are constructor functions that are marked NOINLINE so they are
373−-- opaque to GHC. If we do not do this, then GHC will sometimes fuse the constructor away
374−-- so any weak references that are attached to the constructors will have their
375−-- finalizer run. Using the opaque constructor, does not see the
376−-- constructor application, so it behaves like an IORef and cannot be fused away.
378−-- The result is also evaluated to WHNF, since forcing a thunk invalidates
379−-- the weak pointer to it in some cases.
381newSubscriberHold :: (HasSpiderTimeline x, Patch p) => Hold x p -> IO (Subscriber x p)
467newSubscriberHold :: (HasSpiderTimeline x, Patch p) => Hold x p -> IO (Subscriber x p)
382newSubscriberHold h = return $ Subscriber
468newSubscriberHold h = return $ Subscriber
383 { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
469 { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
@@ -385,85 +471,68 @@ newSubscriberHold h = return $ Subscriber
385 , subscriberRecalculateHeight = \_ -> return ()
471 , subscriberRecalculateHeight = \_ -> return ()
388−newSubscriberFan :: forall x k. (HasSpiderTimeline x, GCompare k) => FanSubscribed x k -> IO (Subscriber x (DMap k Identity))
474+newSubscriberFan :: forall x k v. (HasSpiderTimeline x, GCompare k) => FanSubscribed x k v -> IO (Subscriber x (DMap k v))
389−newSubscriberFan subscribed = return $ Subscriber
475+newSubscriberFan subscribed = debugSubscriber ("SubscriberFan " <> showNodeId subscribed) $ Subscriber
390 { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
476 { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
391 subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
477 subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
392− tracePropagate (Proxy :: Proxy x) $ "SubscriberFan" <> showNodeId subscribed <> ": " ++ show (DMap.size subs) ++ " keys subscribed, " ++ show (DMap.size a) ++ " keys firing"
478+ tracePropagate (Proxy :: Proxy x) $ show (DMap.size subs) <> " keys subscribed, " <> show (DMap.size a) <> " keys firing"
393 liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
479 liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
394 scheduleClear $ fanSubscribedOccurrence subscribed
480 scheduleClear $ fanSubscribedOccurrence subscribed
395− let f _ (Pair (Identity v) subsubs) = do
481+ let f _ (Pair v subsubs) = do
396 propagate v $ _fanSubscribedChildren_list subsubs
482 propagate v $ _fanSubscribedChildren_list subsubs
397 return $ Constant ()
483 return $ Constant ()
398 _ <- DMap.traverseWithKey f $ DMap.intersectionWithKey (\_ -> Pair) a subs --TODO: Would be nice to have DMap.traverse_
484 _ <- DMap.traverseWithKey f $ DMap.intersectionWithKey (\_ -> Pair) a subs --TODO: Would be nice to have DMap.traverse_
399 return ()
485 return ()
400 , subscriberInvalidateHeight = \old -> do
486 , subscriberInvalidateHeight = \old -> do
401− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
402 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
487 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
403− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
488+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
404− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
405 , subscriberRecalculateHeight = \new -> do
489 , subscriberRecalculateHeight = \new -> do
406− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
407 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
490 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
408− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
491+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
409− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
412newSubscriberSwitch :: forall x a. HasSpiderTimeline x => SwitchSubscribed x a -> IO (Subscriber x a)
494newSubscriberSwitch :: forall x a. HasSpiderTimeline x => SwitchSubscribed x a -> IO (Subscriber x a)
413−newSubscriberSwitch subscribed = return $ Subscriber
495+newSubscriberSwitch subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
414 { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
496 { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
415− tracePropagate (Proxy :: Proxy x) $ "SubscriberSwitch" <> showNodeId subscribed
416 liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
497 liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
417 scheduleClear $ switchSubscribedOccurrence subscribed
498 scheduleClear $ switchSubscribedOccurrence subscribed
418 propagate a $ switchSubscribedSubscribers subscribed
499 propagate a $ switchSubscribedSubscribers subscribed
419 , subscriberInvalidateHeight = \_ -> do
500 , subscriberInvalidateHeight = \_ -> do
420− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
421 oldHeight <- readIORef $ switchSubscribedHeight subscribed
501 oldHeight <- readIORef $ switchSubscribedHeight subscribed
422 when (oldHeight /= invalidHeight) $ do
502 when (oldHeight /= invalidHeight) $ do
423 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
503 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
424− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
504+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
425− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
505+ , subscriberRecalculateHeight = (`updateSwitchHeight` subscribed)
426− , subscriberRecalculateHeight = \new -> do
506+ }
427− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
428− updateSwitchHeight new subscribed
429− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
432newSubscriberCoincidenceOuter :: forall x b. HasSpiderTimeline x => CoincidenceSubscribed x b -> IO (Subscriber x (Event x b))
508newSubscriberCoincidenceOuter :: forall x b. HasSpiderTimeline x => CoincidenceSubscribed x b -> IO (Subscriber x (Event x b))
433−newSubscriberCoincidenceOuter subscribed = return $ Subscriber
509+newSubscriberCoincidenceOuter subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
434 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
510 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
435− tracePropagate (Proxy :: Proxy x) $ "SubscriberCoincidenceOuter" <> showNodeId subscribed
436 outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
511 outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
437 tracePropagate (Proxy :: Proxy x) $ " outerHeight = " <> show outerHeight
512 tracePropagate (Proxy :: Proxy x) $ " outerHeight = " <> show outerHeight
438 (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
513 (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
439 tracePropagate (Proxy :: Proxy x) $ " isJust occ = " <> show (isJust occ)
514 tracePropagate (Proxy :: Proxy x) $ " isJust occ = " <> show (isJust occ)
440 tracePropagate (Proxy :: Proxy x) $ " innerHeight = " <> show innerHeight
515 tracePropagate (Proxy :: Proxy x) $ " innerHeight = " <> show innerHeight
441 liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
517 liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
442 scheduleClear $ coincidenceSubscribedInnerParent subscribed
518 scheduleClear $ coincidenceSubscribedInnerParent subscribed
443 case occ of
519 case occ of
444− Nothing -> do
520+ Nothing ->
445 when (innerHeight > outerHeight) $ liftIO $ do -- If the event fires, it will fire at a later height
521 when (innerHeight > outerHeight) $ liftIO $ do -- If the event fires, it will fire at a later height
446 writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
522 writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
447− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
523+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
448− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
524+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
449 Just o -> do -- Since it's already firing, no need to adjust height
525 Just o -> do -- Since it's already firing, no need to adjust height
450 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
526 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
451 scheduleClear $ coincidenceSubscribedOccurrence subscribed
527 scheduleClear $ coincidenceSubscribedOccurrence subscribed
452 propagate o $ coincidenceSubscribedSubscribers subscribed
528 propagate o $ coincidenceSubscribedSubscribers subscribed
453− , subscriberInvalidateHeight = \_ -> do
529+ , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
454− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
530+ , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
455− invalidateCoincidenceHeight subscribed
456− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
457− , subscriberRecalculateHeight = \_ -> do
458− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
459− recalculateCoincidenceHeight subscribed
460− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
463newSubscriberCoincidenceInner :: forall x a. HasSpiderTimeline x => CoincidenceSubscribed x a -> IO (Subscriber x a)
533newSubscriberCoincidenceInner :: forall x a. HasSpiderTimeline x => CoincidenceSubscribed x a -> IO (Subscriber x a)
464−newSubscriberCoincidenceInner subscribed = return $ Subscriber
534+newSubscriberCoincidenceInner subscribed = debugSubscriber ("SubscriberCoincidenceInner" <> showNodeId subscribed) $ Subscriber
465 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
535 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
466− tracePropagate (Proxy :: Proxy x) $ "SubscriberCoincidenceInner" <> showNodeId subscribed
467 occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
536 occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
468 case occ of
537 case occ of
469 Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
538 Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
@@ -471,14 +540,8 @@ newSubscriberCoincidenceInner subscribed = return $ Subscriber
471 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
540 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
472 scheduleClear $ coincidenceSubscribedOccurrence subscribed
541 scheduleClear $ coincidenceSubscribedOccurrence subscribed
473 propagate a $ coincidenceSubscribedSubscribers subscribed
542 propagate a $ coincidenceSubscribedSubscribers subscribed
474− , subscriberInvalidateHeight = \_ -> do
543+ , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
475− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
544+ , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
476− invalidateCoincidenceHeight subscribed
477− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
478− , subscriberRecalculateHeight = \_ -> do
479− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
480− recalculateCoincidenceHeight subscribed
481− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
484invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
547invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
@@ -488,11 +551,18 @@ recalculateSubscriberHeight :: Height -> Subscriber x a -> IO ()
488recalculateSubscriberHeight = flip subscriberRecalculateHeight
551recalculateSubscriberHeight = flip subscriberRecalculateHeight
490-- | Propagate everything at the current height
553-- | Propagate everything at the current height
491−propagate :: a -> WeakBag (Subscriber x a) -> EventM x ()
554+propagate :: forall x a. HasSpiderTimeline x => a -> WeakBag (Subscriber x a) -> EventM x ()
492−propagate a subscribers = withIncreasedDepth $ do
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) $
493 -- 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
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
494 --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
564 --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
495− WeakBag.traverse subscribers $ \s -> subscriberPropagate s a
565+ FastWeakBag.traverse_ subscribers $ \s -> subscriberPropagate s a
497--------------------------------------------------------------------------------
567--------------------------------------------------------------------------------
498-- EventSubscribed
568-- EventSubscribed
@@ -501,11 +571,16 @@ propagate a subscribers = withIncreasedDepth $ do
501toAny :: a -> Any
571toAny :: a -> Any
502toAny = unsafeCoerce
572toAny = unsafeCoerce
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
504data EventSubscribed x = EventSubscribed
579data EventSubscribed x = EventSubscribed
505 { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
580 { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
506 , eventSubscribedRetained :: {-# NOUNPACK #-} !Any
581 , eventSubscribedRetained :: {-# NOUNPACK #-} !Any
507#ifdef DEBUG_CYCLES
582#ifdef DEBUG_CYCLES
508− , eventSubscribedGetParents :: !(IO [Some (EventSubscribed x)]) -- For debugging loops
583+ , eventSubscribedGetParents :: !(IO [EventSubscribed x]) -- For debugging loops
509 , eventSubscribedHasOwnHeightRef :: !Bool
584 , eventSubscribedHasOwnHeightRef :: !Bool
510 , eventSubscribedWhoCreated :: !(IO [String])
585 , eventSubscribedWhoCreated :: !(IO [String])
@@ -532,13 +607,23 @@ eventSubscribedNever = EventSubscribed
532 , eventSubscribedWhoCreated = return ["never"]
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"]
536−eventSubscribedFan :: FanSubscribed x k -> EventSubscribed x
621+eventSubscribedFan :: FanSubscribed x k v -> EventSubscribed x
537eventSubscribedFan !subscribed = EventSubscribed
622eventSubscribedFan !subscribed = EventSubscribed
538 { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
623 { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
539 , eventSubscribedRetained = toAny subscribed
624 , eventSubscribedRetained = toAny subscribed
540#ifdef DEBUG_CYCLES
625#ifdef DEBUG_CYCLES
541− , eventSubscribedGetParents = return [Some.This $ _eventSubscription_subscribed $ fanSubscribedParent subscribed]
626+ , eventSubscribedGetParents = return [_eventSubscription_subscribed $ fanSubscribedParent subscribed]
542 , eventSubscribedHasOwnHeightRef = False
627 , eventSubscribedHasOwnHeightRef = False
543 , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
628 , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
@@ -551,7 +636,7 @@ eventSubscribedSwitch !subscribed = EventSubscribed
551#ifdef DEBUG_CYCLES
636#ifdef DEBUG_CYCLES
552 , eventSubscribedGetParents = do
637 , eventSubscribedGetParents = do
553 s <- readIORef $ switchSubscribedCurrentParent subscribed
638 s <- readIORef $ switchSubscribedCurrentParent subscribed
554− return [Some.This $ _eventSubscription_subscribed s]
639+ return [_eventSubscription_subscribed s]
555 , eventSubscribedHasOwnHeightRef = True
640 , eventSubscribedHasOwnHeightRef = True
556 , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
641 , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
@@ -564,8 +649,8 @@ eventSubscribedCoincidence !subscribed = EventSubscribed
564#ifdef DEBUG_CYCLES
649#ifdef DEBUG_CYCLES
565 , eventSubscribedGetParents = do
650 , eventSubscribedGetParents = do
566 innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
651 innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
567− let outerParent = Some.This $ _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
652+ let outerParent = _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
568− innerParents = maybeToList $ fmap Some.This innerSubscription
653+ innerParents = maybeToList $ innerSubscription
569 return $ outerParent : innerParents
654 return $ outerParent : innerParents
570 , eventSubscribedHasOwnHeightRef = True
655 , eventSubscribedHasOwnHeightRef = True
571 , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
656 , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
@@ -579,20 +664,20 @@ getEventSubscribedHeight es = readIORef $ eventSubscribedHeightRef es
579whoCreatedEventSubscribed :: EventSubscribed x -> IO [String]
664whoCreatedEventSubscribed :: EventSubscribed x -> IO [String]
580whoCreatedEventSubscribed = eventSubscribedWhoCreated
665whoCreatedEventSubscribed = eventSubscribedWhoCreated
582−walkInvalidHeightParents :: EventSubscribed x -> IO [Some (EventSubscribed x)]
667+walkInvalidHeightParents :: EventSubscribed x -> IO [EventSubscribed x]
583walkInvalidHeightParents s0 = do
668walkInvalidHeightParents s0 = do
584− subscribers <- flip execStateT mempty $ ($ Some.This s0) $ fix $ \loop (Some.This s) -> do
669+ subscribers <- flip execStateT mempty $ ($ s0) $ fix $ \loop s -> do
585 h <- liftIO $ readIORef $ eventSubscribedHeightRef s
670 h <- liftIO $ readIORef $ eventSubscribedHeightRef s
586 when (h == invalidHeight) $ do
671 when (h == invalidHeight) $ do
587 when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
672 when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
588− modify (Some.This s :)
673+ modify (s :)
589 mapM_ loop =<< liftIO (eventSubscribedGetParents s)
674 mapM_ loop =<< liftIO (eventSubscribedGetParents s)
590− forM_ subscribers $ \(Some.This s) -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
675+ forM_ subscribers $ \s -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
591 return subscribers
676 return subscribers
594{-# INLINE subscribeHoldEvent #-}
679{-# INLINE subscribeHoldEvent #-}
595−subscribeHoldEvent :: CanSubscribe x m => Hold x p -> Subscriber x p -> m (EventSubscription x, Maybe p)
680+subscribeHoldEvent :: Hold x p -> Subscriber x p -> EventM x (EventSubscription x, Maybe p)
596subscribeHoldEvent = subscribeAndRead . holdEvent
681subscribeHoldEvent = subscribeAndRead . holdEvent
598--------------------------------------------------------------------------------
683--------------------------------------------------------------------------------
@@ -615,7 +700,7 @@ behaviorPull !p = Behavior $ do
615 val <- liftIO $ readIORef $ pullValue p
700 val <- liftIO $ readIORef $ pullValue p
616 case val of
701 case val of
617 Just subscribed -> do
702 Just subscribed -> do
618− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
703+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
619 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
704 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
620 liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
705 liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
621 return $ pullSubscribedValue subscribed
706 return $ pullSubscribedValue subscribed
@@ -624,7 +709,7 @@ behaviorPull !p = Behavior $ do
624 wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
709 wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
625 parentsRef <- liftIO $ newIORef []
710 parentsRef <- liftIO $ newIORef []
626 holdInits <- askBehaviorHoldInits
711 holdInits <- askBehaviorHoldInits
627− a <- liftIO $ runReaderT (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
712+ a <- liftIO $ runReaderIO (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
628 invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
713 invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
629 parents <- liftIO $ readIORef parentsRef
714 parents <- liftIO $ readIORef parentsRef
630 let subscribed = PullSubscribed
715 let subscribed = PullSubscribed
@@ -634,7 +719,7 @@ behaviorPull !p = Behavior $ do
634 , pullSubscribedParents = parents
719 , pullSubscribedParents = parents
636 liftIO $ writeIORef (pullValue p) $ Just subscribed
721 liftIO $ writeIORef (pullValue p) $ Just subscribed
637− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
722+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
640behaviorDyn :: Patch p => Dyn x p -> Behavior x (PatchTarget p)
725behaviorDyn :: Patch p => Dyn x p -> Behavior x (PatchTarget p)
@@ -645,7 +730,8 @@ readHoldTracked :: Hold x p -> BehaviorM x (PatchTarget p)
645readHoldTracked h = do
730readHoldTracked h = do
646 result <- liftIO $ readIORef $ holdValue h
731 result <- liftIO $ readIORef $ holdValue h
647 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
732 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
648− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedHold h) :))
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
649 return result
735 return result
651{-# INLINABLE readBehaviorUntracked #-}
737{-# INLINABLE readBehaviorUntracked #-}
@@ -658,42 +744,46 @@ readBehaviorUntracked b = do
658-- Dynamic
744-- Dynamic
659--------------------------------------------------------------------------------
745--------------------------------------------------------------------------------
661−data Dynamic x p = Dynamic
747+type DynamicS x p = Dynamic x (PatchTarget p) p
662− { dynamicCurrent :: !(Behavior x (PatchTarget p))
748+
663− , dynamicUpdated :: !(Event x 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`?
666−dynamicHold :: HasSpiderTimeline x => Hold x p -> Dynamic x p
754+deriving instance (HasSpiderTimeline x) => Functor (Dynamic x target)
759+dynamicHold :: Hold x p -> DynamicS x p
667dynamicHold !h = Dynamic
760dynamicHold !h = Dynamic
668 { dynamicCurrent = behaviorHold h
761 { dynamicCurrent = behaviorHold h
669 , dynamicUpdated = eventHold h
762 , dynamicUpdated = eventHold h
672−dynamicHoldIdentity :: HasSpiderTimeline x => Hold x (Identity a) -> Dynamic x (Identity a)
765+dynamicHoldIdentity :: Hold x (Identity a) -> DynamicS x (Identity a)
673dynamicHoldIdentity = dynamicHold
766dynamicHoldIdentity = dynamicHold
675−dynamicConst :: PatchTarget p -> Dynamic x p
768+dynamicConst :: PatchTarget p -> DynamicS x p
676dynamicConst !a = Dynamic
769dynamicConst !a = Dynamic
677 { dynamicCurrent = behaviorConst a
770 { dynamicCurrent = behaviorConst a
678 , dynamicUpdated = eventNever
771 , dynamicUpdated = eventNever
681−dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Dynamic x p
774+dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> DynamicS x p
682dynamicDyn !d = Dynamic
775dynamicDyn !d = Dynamic
683 { dynamicCurrent = behaviorDyn d
776 { dynamicCurrent = behaviorDyn d
684 , dynamicUpdated = eventDyn d
777 , dynamicUpdated = eventDyn d
687−dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> Dynamic x (Identity a)
780+dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> DynamicS x (Identity a)
688dynamicDynIdentity = dynamicDyn
781dynamicDynIdentity = dynamicDyn
690--------------------------------------------------------------------------------
783--------------------------------------------------------------------------------
691-- Combinators
784-- Combinators
692--------------------------------------------------------------------------------
785--------------------------------------------------------------------------------
694−--TODO: Figure out why certain things are not 'representational', then make them
695−--representational so we can use coerce
697--type role Hold representational
787--type role Hold representational
698data Hold x p
788data Hold x p
699 = Hold { holdValue :: !(IORef (PatchTarget p))
789 = Hold { holdValue :: !(IORef (PatchTarget p))
@@ -705,9 +795,7 @@ data Hold x p
708−-- | A statically allocated 'SpiderTimeline'; this is the only instance of
798+-- | A statically allocated 'SpiderTimeline'
709−-- 'SpiderTimeline' that can used when using
710−-- -fspecialize-to-spidertimeline-global.
711data Global
799data Global
713{-# NOINLINE globalSpiderTimelineEnv #-}
801{-# NOINLINE globalSpiderTimelineEnv #-}
@@ -716,27 +804,37 @@ globalSpiderTimelineEnv = unsafePerformIO unsafeNewSpiderTimelineEnv
717-- | Stores all global data relevant to a particular Spider timeline; only one
805-- | Stores all global data relevant to a particular Spider timeline; only one
718-- value should exist for each type @x@
806-- value should exist for each type @x@
719−data SpiderTimelineEnv x = SpiderTimelineEnv
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
720 { _spiderTimeline_lock :: {-# UNPACK #-} !(MVar ())
813 { _spiderTimeline_lock :: {-# UNPACK #-} !(MVar ())
721 , _spiderTimeline_eventEnv :: {-# UNPACK #-} !(EventEnv x)
814 , _spiderTimeline_eventEnv :: {-# UNPACK #-} !(EventEnv x)
722#ifdef DEBUG
815#ifdef DEBUG
723 , _spiderTimeline_depth :: {-# UNPACK #-} !(IORef Int)
816 , _spiderTimeline_depth :: {-# UNPACK #-} !(IORef Int)
726−type role SpiderTimelineEnv nominal
819+type role SpiderTimelineEnv' phantom
821+instance Eq (SpiderTimelineEnv x) where
822+ _ == _ = True -- Since only one exists of each type
728instance GEq SpiderTimelineEnv where
824instance GEq SpiderTimelineEnv where
729− a `geq` b = if _spiderTimeline_lock a == _spiderTimeline_lock b
825+ a `geq` b = if _spiderTimeline_lock (unSTE a) == _spiderTimeline_lock (unSTE b)
730 then Just $ unsafeCoerce Refl -- This unsafeCoerce is safe because the same SpiderTimelineEnv can't have two different 'x' arguments
826 then Just $ unsafeCoerce Refl -- This unsafeCoerce is safe because the same SpiderTimelineEnv can't have two different 'x' arguments
731 else Nothing
827 else Nothing
733data EventEnv x
829data EventEnv x
734 = EventEnv { eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
830 = EventEnv { eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
735 , eventEnvHoldInits :: !(IORef [SomeHoldInit x]) -- Needed for Subscribe
831 , eventEnvHoldInits :: !(IORef [SomeHoldInit x]) -- Needed for Subscribe
832+ , eventEnvDynInits :: !(IORef [SomeDynInit x])
736 , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
833 , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
737 , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
834 , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
738− , eventEnvClears :: !(IORef [SomeClear]) -- Needed for Subscribe
835+ , eventEnvClears :: !(IORef [Some Clear]) -- Needed for Subscribe
739− , eventEnvRootClears :: !(IORef [SomeRootClear])
836+ , eventEnvIntClears :: !(IORef [Some IntClear])
837+ , eventEnvRootClears :: !(IORef [Some RootClear])
740 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
838 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
741 , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
839 , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
742 , eventEnvDelayedMerges :: !(IORef (IntMap [EventM x ()]))
840 , eventEnvDelayedMerges :: !(IORef (IntMap [EventM x ()]))
@@ -747,7 +845,7 @@ runEventM :: EventM x a -> IO a
747runEventM = unEventM
845runEventM = unEventM
749asksEventEnv :: forall x a. HasSpiderTimeline x => (EventEnv x -> a) -> EventM x a
847asksEventEnv :: forall x a. HasSpiderTimeline x => (EventEnv x -> a) -> EventM x a
750−asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (spiderTimeline :: SpiderTimelineEnv x)
848+asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (unSTE (spiderTimeline :: SpiderTimelineEnv x))
752class MonadIO m => Defer a m where
850class MonadIO m => Defer a m where
753 getDeferralQueue :: m (IORef [a])
851 getDeferralQueue :: m (IORef [a])
@@ -766,6 +864,10 @@ instance HasSpiderTimeline x => Defer (SomeHoldInit x) (EventM x) where
766 {-# INLINE getDeferralQueue #-}
864 {-# INLINE getDeferralQueue #-}
767 getDeferralQueue = asksEventEnv eventEnvHoldInits
865 getDeferralQueue = asksEventEnv eventEnvHoldInits
867+instance HasSpiderTimeline x => Defer (SomeDynInit x) (EventM x) where
868+ {-# INLINE getDeferralQueue #-}
869+ getDeferralQueue = asksEventEnv eventEnvDynInits
769instance Defer (SomeHoldInit x) (BehaviorM x) where
871instance Defer (SomeHoldInit x) (BehaviorM x) where
770 {-# INLINE getDeferralQueue #-}
872 {-# INLINE getDeferralQueue #-}
771 getDeferralQueue = BehaviorM $ asks snd
873 getDeferralQueue = BehaviorM $ asks snd
@@ -792,11 +894,7 @@ instance HasSpiderTimeline x => HasCurrentHeight x (EventM x) where
792 delayedRef <- asksEventEnv eventEnvDelayedMerges
894 delayedRef <- asksEventEnv eventEnvDelayedMerges
793 liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [subscribed]
895 liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [subscribed]
795−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
796−class x ~ Global => HasSpiderTimeline x where
798class HasSpiderTimeline x where
897class HasSpiderTimeline x where
800 -- | Retrieve the current SpiderTimelineEnv
898 -- | Retrieve the current SpiderTimelineEnv
801 spiderTimeline :: SpiderTimelineEnv x
899 spiderTimeline :: SpiderTimelineEnv x
@@ -808,21 +906,29 @@ putCurrentHeight h = do
808 heightRef <- asksEventEnv eventEnvCurrentHeight
906 heightRef <- asksEventEnv eventEnvCurrentHeight
809 liftIO $ writeIORef heightRef $! h
907 liftIO $ writeIORef heightRef $! h
811−instance HasSpiderTimeline x => Defer SomeClear (EventM x) where
909+instance HasSpiderTimeline x => Defer (Some Clear) (EventM x) where
812 {-# INLINE getDeferralQueue #-}
910 {-# INLINE getDeferralQueue #-}
813 getDeferralQueue = asksEventEnv eventEnvClears
911 getDeferralQueue = asksEventEnv eventEnvClears
815{-# INLINE scheduleClear #-}
913{-# INLINE scheduleClear #-}
816−scheduleClear :: Defer SomeClear m => IORef (Maybe a) -> m ()
914+scheduleClear :: Defer (Some Clear) m => IORef (Maybe a) -> m ()
817−scheduleClear r = defer $ SomeClear r
915+scheduleClear r = defer $ Some $ Clear r
917+instance HasSpiderTimeline x => Defer (Some IntClear) (EventM x) where
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
819−instance HasSpiderTimeline x => Defer SomeRootClear (EventM x) where
925+instance HasSpiderTimeline x => Defer (Some RootClear) (EventM x) where
820 {-# INLINE getDeferralQueue #-}
926 {-# INLINE getDeferralQueue #-}
821 getDeferralQueue = asksEventEnv eventEnvRootClears
927 getDeferralQueue = asksEventEnv eventEnvRootClears
823{-# INLINE scheduleRootClear #-}
929{-# INLINE scheduleRootClear #-}
824−scheduleRootClear :: Defer SomeRootClear m => IORef (DMap k Identity) -> m ()
930+scheduleRootClear :: Defer (Some RootClear) m => IORef (DMap k Identity) -> m ()
825−scheduleRootClear r = defer $ SomeRootClear r
931+scheduleRootClear r = defer $ Some $ RootClear r
827instance HasSpiderTimeline x => Defer (SomeResetCoincidence x) (EventM x) where
933instance HasSpiderTimeline x => Defer (SomeResetCoincidence x) (EventM x) where
828 {-# INLINE getDeferralQueue #-}
934 {-# INLINE getDeferralQueue #-}
@@ -851,7 +957,7 @@ hold v0 e = do
853{-# INLINE getHoldEventSubscription #-}
959{-# INLINE getHoldEventSubscription #-}
854−getHoldEventSubscription :: forall m p x. (Defer (SomeAssignment x) m, Defer (SomeHoldInit x) m, Defer SomeClear m, Patch p, HasCurrentHeight x m, Defer (SomeMergeInit x) m, Defer (SomeResetCoincidence x) m, HasSpiderTimeline x, m ~ EventM x) => Hold x p -> m (EventSubscription x)
960+getHoldEventSubscription :: forall p x. (HasSpiderTimeline x, Patch p) => Hold x p -> EventM x (EventSubscription x)
855getHoldEventSubscription h = do
961getHoldEventSubscription h = do
856 ep <- liftIO $ readIORef $ holdParent h
962 ep <- liftIO $ readIORef $ holdParent h
857 case ep of
963 case ep of
@@ -877,9 +983,9 @@ getHoldEventSubscription h = do
878type BehaviorEnv x = (Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]), IORef [SomeHoldInit x])
984type BehaviorEnv x = (Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]), IORef [SomeHoldInit x])
880−--type role BehaviorM representational
881-- BehaviorM can sample behaviors
986-- BehaviorM can sample behaviors
882−newtype BehaviorM x a = BehaviorM { unBehaviorM :: ReaderT (BehaviorEnv x) 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))
884instance Monad (BehaviorM x) where
990instance Monad (BehaviorM x) where
885 {-# INLINE (>>=) #-}
991 {-# INLINE (>>=) #-}
@@ -888,14 +994,16 @@ instance Monad (BehaviorM x) where
888 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
994 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
889 {-# INLINE return #-}
995 {-# INLINE return #-}
890 return x = BehaviorM $ return x
996 return x = BehaviorM $ return x
997+#if !MIN_VERSION_base(4,13,0)
891 {-# INLINE fail #-}
998 {-# INLINE fail #-}
892 fail s = BehaviorM $ fail s
999 fail s = BehaviorM $ fail s
894data BehaviorSubscribed x a
1002data BehaviorSubscribed x a
895 = forall p. BehaviorSubscribedHold (Hold x p)
1003 = forall p. BehaviorSubscribedHold (Hold x p)
896 | BehaviorSubscribedPull (PullSubscribed x a)
1004 | BehaviorSubscribedPull (PullSubscribed x a)
898−data SomeBehaviorSubscribed x = forall a. SomeBehaviorSubscribed (BehaviorSubscribed x a)
1006+newtype SomeBehaviorSubscribed x = SomeBehaviorSubscribed (Some (BehaviorSubscribed x))
900--type role PullSubscribed representational
1008--type role PullSubscribed representational
901data PullSubscribed x a
1009data PullSubscribed x a
@@ -930,7 +1038,7 @@ data RootSubscribed x a = forall k. GCompare k => RootSubscribed
933−data Root x (k :: * -> *)
1041+data Root x k
934 = 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
935 , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
1043 , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
936 , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
1044 , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
@@ -938,6 +1046,8 @@ data Root x (k :: * -> *)
939data SomeHoldInit x = forall p. Patch p => SomeHoldInit !(Hold x p)
1047data SomeHoldInit x = forall p. Patch p => SomeHoldInit !(Hold x p)
1049+data SomeDynInit x = forall p. Patch p => SomeDynInit !(Dyn x p)
941data SomeMergeUpdate x = SomeMergeUpdate
1051data SomeMergeUpdate x = SomeMergeUpdate
942 { _someMergeUpdate_update :: !(EventM x [EventSubscription x])
1052 { _someMergeUpdate_update :: !(EventM x [EventSubscription x])
943 , _someMergeUpdate_invalidateHeight :: !(IO ())
1053 , _someMergeUpdate_invalidateHeight :: !(IO ())
@@ -947,19 +1057,15 @@ data SomeMergeUpdate x = SomeMergeUpdate
947newtype SomeMergeInit x = SomeMergeInit { unSomeMergeInit :: EventM x () }
1057newtype SomeMergeInit x = SomeMergeInit { unSomeMergeInit :: EventM x () }
949-- EventM can do everything BehaviorM can, plus create holds
1059-- EventM can do everything BehaviorM can, plus create holds
950−newtype EventM x a = EventM { unEventM :: 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)
952−newtype ComputeM x a = ComputeM (ReaderT (IORef [SomeHoldInit x]) IO a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
954−instance Defer (SomeHoldInit x) (ComputeM x) where
955− getDeferralQueue = ComputeM ask
957−{-# INLINABLE runComputeM #-}
958−runComputeM :: Defer (SomeHoldInit x) m => ComputeM x a -> m a
959−runComputeM (ComputeM a) = liftIO . runReaderT a =<< getDeferralQueue
961newtype MergeSubscribedParent x a = MergeSubscribedParent { unMergeSubscribedParent :: EventSubscription x }
1062newtype MergeSubscribedParent x a = MergeSubscribedParent { unMergeSubscribedParent :: EventSubscription x }
1064+data MergeSubscribedParentWithMove x k a = MergeSubscribedParentWithMove
1065+ { _mergeSubscribedParentWithMove_subscription :: !(EventSubscription x)
1066+ , _mergeSubscribedParentWithMove_key :: !(IORef (k a))
963data HeightBag = HeightBag
1069data HeightBag = HeightBag
964 { _heightBag_size :: {-# UNPACK #-} !Int
1070 { _heightBag_size :: {-# UNPACK #-} !Int
965 , _heightBag_contents :: !(IntMap Word) -- Number of excess in each bucket
1071 , _heightBag_contents :: !(IntMap Word) -- Number of excess in each bucket
@@ -976,7 +1082,8 @@ heightBagFromList :: [Height] -> HeightBag
976heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
1082heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
978heightBagAdd :: Height -> HeightBag -> HeightBag
1084heightBagAdd :: Height -> HeightBag -> HeightBag
979−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
981heightBagRemove :: Height -> HeightBag -> HeightBag
1088heightBagRemove :: Height -> HeightBag -> HeightBag
982heightBagRemove (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
@@ -985,6 +1092,13 @@ heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.loo
985 0 -> IntMap.delete h c
1092 0 -> IntMap.delete h c
986 _ -> 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
988heightBagMax :: HeightBag -> Height
1102heightBagMax :: HeightBag -> Height
989heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
1103heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
990 Just ((h, _), _) -> Height h
1104 Just ((h, _), _) -> Height h
@@ -1002,25 +1116,25 @@ heightBagVerify b@(HeightBag s c) = if
1002heightBagVerify = id
1116heightBagVerify = id
1005−data FanSubscribedChildren (x :: *) k a = FanSubscribedChildren
1119+data FanSubscribedChildren x k v a = FanSubscribedChildren
1006− { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x a))
1120+ { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x (v a)))
1007− , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k)
1121+ , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k v)
1008− , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k)))
1122+ , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k v)))
1011−data FanSubscribed (x :: *) k
1125+data FanSubscribed x k v
1012− = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
1126+ = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
1013− , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k Identity)))
1127+ , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k v)))
1014− , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren x k))) -- This DMap should never be empty
1128+ , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren x k v))) -- This DMap should never be empty
1015 , fanSubscribedParent :: !(EventSubscription x)
1129 , fanSubscribedParent :: !(EventSubscription x)
1016#ifdef DEBUG_NODEIDS
1130#ifdef DEBUG_NODEIDS
1017 , fanSubscribedNodeId :: Int
1131 , fanSubscribedNodeId :: Int
1021−data Fan x k
1135+data Fan x k v
1022− = Fan { fanParent :: !(Event x (DMap k Identity))
1136+ = Fan { fanParent :: !(Event x (DMap k v))
1023− , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
1137+ , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
1026data SwitchSubscribed x a
1140data SwitchSubscribed x a
@@ -1074,20 +1188,35 @@ newInvalidatorSwitch subd = return $! InvalidatorSwitch subd
1074newInvalidatorPull :: Pull x a -> IO (Invalidator x)
1188newInvalidatorPull :: Pull x a -> IO (Invalidator x)
1075newInvalidatorPull p = return $! InvalidatorPull p
1189newInvalidatorPull p = return $! InvalidatorPull p
1077−instance HasSpiderTimeline x => FunctorMaybe (Event x) where
1191+instance HasSpiderTimeline x => Filterable (Event x) where
1078− fmapMaybe f = push $ return . f
1192+ mapMaybe f = push $ return . f
1080instance HasSpiderTimeline x => Align (Event x) where
1194instance HasSpiderTimeline x => Align (Event x) where
1081 nil = eventNever
1195 nil = eventNever
1082− align ea eb = fmapMaybe dmapToThese $ merge $ dynamicConst $ DMap.fromList [LeftTag :=> ea, RightTag :=> eb]
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]
1202+#ifdef MIN_VERSION_semialign
1203+#if MIN_VERSION_semialign(1,1,0)
1204+instance HasSpiderTimeline x => Zip (Event x) where
1206+ zip x y = mapMaybe justThese $ align x y
1084−newtype Dyn x p = Dyn { unDyn :: IORef (Either (BehaviorM x (PatchTarget p), Event x p) (Hold x p)) }
1209+data DynType x p = UnsafeDyn !(BehaviorM x (PatchTarget p), Event x p)
1210+ | BuildDyn !(EventM x (PatchTarget p), Event x p)
1211+ | HoldDyn !(Hold x p)
1086−newMapDyn :: HasSpiderTimeline x => (a -> b) -> Dynamic x (Identity a) -> Dynamic x (Identity b)
1213+newtype Dyn (x :: Type) p = Dyn { unDyn :: IORef (DynType x p) }
1087−newMapDyn f d = dynamicDynIdentity $ unsafeDyn (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
1214+
1215+newMapDyn :: HasSpiderTimeline x => (a -> b) -> DynamicS x (Identity a) -> DynamicS x (Identity b)
1216+newMapDyn f d = dynamicDynIdentity $ unsafeBuildDynamic (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
1089--TODO: Avoid the duplication between this and R.zipDynWith
1218--TODO: Avoid the duplication between this and R.zipDynWith
1090−zipDynWith :: HasSpiderTimeline x => (a -> b -> c) -> Dynamic x (Identity a) -> Dynamic x (Identity b) -> Dynamic x (Identity c)
1219+zipDynWith :: HasSpiderTimeline x => (a -> b -> c) -> DynamicS x (Identity a) -> DynamicS x (Identity b) -> DynamicS x (Identity c)
1091zipDynWith f da db =
1220zipDynWith f da db =
1092 let eab = align (dynamicUpdated da) (dynamicUpdated db)
1221 let eab = align (dynamicUpdated da) (dynamicUpdated db)
1093 ec = flip push eab $ \o -> do
1222 ec = flip push eab $ \o -> do
@@ -1100,19 +1229,22 @@ zipDynWith f da db =
1100 return (a, b)
1229 return (a, b)
1101 These (Identity a) (Identity b) -> return (a, b)
1230 These (Identity a) (Identity b) -> return (a, b)
1102 return $ Just $ Identity $ f a b
1231 return $ Just $ Identity $ f a b
1103− in dynamicDynIdentity $ unsafeDyn (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
1232+ in dynamicDynIdentity $ unsafeBuildDynamic (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
1234+buildDynamic :: (Defer (SomeDynInit x) m, Patch p) => EventM x (PatchTarget p) -> Event x p -> m (Dyn x p)
1235+buildDynamic readV0 v' = do
1236+ result <- liftIO $ newIORef $ BuildDyn (readV0, v')
1237+ let !d = Dyn result
1238+ defer $ SomeDynInit d
1105−unsafeDyn :: BehaviorM x (PatchTarget p) -> Event x p -> Dyn x p
1241+unsafeBuildDynamic :: BehaviorM x (PatchTarget p) -> Event x p -> Dyn x p
1106−unsafeDyn readV0 v' = Dyn $ unsafeNewIORef x $ Left x
1242+unsafeBuildDynamic readV0 v' =
1107− where x = (readV0, v')
1243+ Dyn $ unsafePerformIO $ newIORef $ UnsafeDyn (readV0, v')
1109-- ResultM can read behaviors and events
1245-- ResultM can read behaviors and events
1110type ResultM = EventM
1246type ResultM = EventM
1112−{-# NOINLINE unsafeNewIORef #-}
1113−unsafeNewIORef :: a -> b -> IORef b
1114−unsafeNewIORef _ b = unsafePerformIO $ newIORef b
1116instance HasSpiderTimeline x => Functor (Event x) where
1248instance HasSpiderTimeline x => Functor (Event x) where
1117 fmap f = push $ return . Just . f
1249 fmap f = push $ return . Just . f
@@ -1125,33 +1257,42 @@ push f e = cacheEvent (pushCheap f e)
1126{-# INLINABLE pull #-}
1258{-# INLINABLE pull #-}
1127pull :: BehaviorM x a -> Behavior x a
1259pull :: BehaviorM x a -> Behavior x a
1128−pull a = behaviorPull $ Pull
1260+pull a = unsafePerformIO $ do
1129− { pullCompute = a
1261+ ref <- newIORef Nothing
1130− , pullValue = unsafeNewIORef a Nothing
1131#ifdef DEBUG_NODEIDS
1262#ifdef DEBUG_NODEIDS
1132− , pullNodeId = unsafeNodeId a
1263+ nid <- newNodeId
1134− }
1265+ pure $ behaviorPull $ Pull
1268+#ifdef DEBUG_NODEIDS
1136{-# INLINABLE switch #-}
1273{-# INLINABLE switch #-}
1137switch :: HasSpiderTimeline x => Behavior x (Event x a) -> Event x a
1274switch :: HasSpiderTimeline x => Behavior x (Event x a) -> Event x a
1138−switch a = eventSwitch $ Switch
1275+switch a = unsafePerformIO $ do
1139− { switchParent = a
1276+ ref <- newIORef Nothing
1140− , switchSubscribed = unsafeNewIORef a Nothing
1277+ pure $ eventSwitch $ Switch
1141− }
1278+ { switchParent = a
1279+ , switchSubscribed = ref
1143coincidence :: HasSpiderTimeline x => Event x (Event x a) -> Event x a
1282coincidence :: HasSpiderTimeline x => Event x (Event x a) -> Event x a
1144−coincidence a = eventCoincidence $ Coincidence
1283+coincidence a = unsafePerformIO $ do
1145− { coincidenceParent = a
1284+ ref <- newIORef Nothing
1146− , coincidenceSubscribed = unsafeNewIORef a Nothing
1285+ pure $ eventCoincidence $ Coincidence
1147− }
1286+ { coincidenceParent = a
1287+ , coincidenceSubscribed = ref
1149-- 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
1150run :: forall x b. HasSpiderTimeline x => [DSum (RootTrigger x) Identity] -> ResultM x b -> SpiderHost x b
1291run :: forall x b. HasSpiderTimeline x => [DSum (RootTrigger x) Identity] -> ResultM x b -> SpiderHost x b
1151run roots after = do
1292run roots after = do
1152 tracePropagate (Proxy :: Proxy x) $ "Running an event frame with " <> show (length roots) <> " events"
1293 tracePropagate (Proxy :: Proxy x) $ "Running an event frame with " <> show (length roots) <> " events"
1153− t <- SpiderHost ask
1294+ let t = spiderTimeline :: SpiderTimelineEnv x
1154− result <- SpiderHost $ lift $ withMVar (_spiderTimeline_lock t) $ \_ -> flip runReaderT t $ unSpiderHost $ runFrame $ do
1295+ result <- SpiderHost $ withMVar (_spiderTimeline_lock (unSTE t)) $ \_ -> unSpiderHost $ runFrame $ do
1155 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
1296 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
1156 occBefore <- liftIO $ do
1297 occBefore <- liftIO $ do
1157 occBefore <- readIORef occRef
1298 occBefore <- readIORef occRef
@@ -1189,9 +1330,11 @@ scheduleMerge' initialHeight heightRef a = scheduleMerge initialHeight $ do
1189 GT -> scheduleMerge' height heightRef a -- The height has been increased (by a coincidence event; TODO: is this the only way?)
1330 GT -> scheduleMerge' height heightRef a -- The height has been increased (by a coincidence event; TODO: is this the only way?)
1192−data SomeClear = forall a. SomeClear (IORef (Maybe a))
1333+newtype Clear a = Clear (IORef (Maybe a))
1335+newtype IntClear a = IntClear (IORef (IntMap a))
1194−data SomeRootClear = forall k. SomeRootClear (IORef (DMap k Identity))
1337+newtype RootClear k = RootClear (IORef (DMap k Identity))
1196data SomeAssignment x = forall a. SomeAssignment {-# UNPACK #-} !(IORef a) {-# UNPACK #-} !(IORef [Weak (Invalidator x)]) a
1339data SomeAssignment x = forall a. SomeAssignment {-# UNPACK #-} !(IORef a) {-# UNPACK #-} !(IORef [Weak (Invalidator x)]) a
@@ -1203,55 +1346,110 @@ mkWeakPtrWithDebug x debugNote = do
1203 x' <- evaluate x
1346 x' <- evaluate x
1204 mkWeakPtr x' $
1347 mkWeakPtr x' $
1205 if debugFinalize
1348 if debugFinalize
1206− then Just $ putStrLn $ "finalizing: " ++ debugNote
1349+ then Just $ debugStrLn $ "finalizing: " ++ debugNote
1207 else Nothing
1350 else Nothing
1209type WeakList a = [Weak a]
1352type WeakList a = [Weak a]
1211−{-# INLINE withIncreasedDepth #-}
1354+type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
1212#ifdef DEBUG
1359#ifdef DEBUG
1213−withIncreasedDepth :: CanTrace x m => m a -> m a
1360+
1214−withIncreasedDepth a = do
1361+debugSubscriber :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> IO (Subscriber x a)
1215− spiderTimeline <- askSpiderTimelineEnv
1362+debugSubscriber description = return . debugSubscriber' description
1216− liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) succ
1363+
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"
1381+{-# INLINE withIncreasedDepth #-}
1382+withIncreasedDepth :: forall proxy x m a. CanTrace x m => proxy x -> m a -> m a
1383+withIncreasedDepth _ a = do
1384+ liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) succ
1217 result <- a
1385 result <- a
1218− liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) pred
1386+ liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) pred
1219 return result
1387 return result
1221−withIncreasedDepth :: m a -> m a
1222−withIncreasedDepth = id
1225−type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
1227{-# INLINE tracePropagate #-}
1389{-# INLINE tracePropagate #-}
1228tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1390tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1229−tracePropagate p = traceWhen p debugPropagate
1391+tracePropagate p = when debugPropagate . trace p
1231{-# INLINE traceInvalidate #-}
1393{-# INLINE traceInvalidate #-}
1232traceInvalidate :: String -> IO ()
1394traceInvalidate :: String -> IO ()
1233−traceInvalidate = when debugInvalidate . liftIO . putStrLn
1395+traceInvalidate = when debugInvalidate . liftIO . debugStrLn
1235−{-# INLINE traceWhen #-}
1397+{-# INLINE traceInvalidateHeight #-}
1236−traceWhen :: (CanTrace x m) => proxy x -> Bool -> String -> m ()
1398+traceInvalidateHeight :: String -> IO ()
1237−traceWhen p b message = traceMWhen p b $ return message
1399+traceInvalidateHeight = when debugInvalidateHeight . liftIO . debugStrLn
1239−{-# INLINE traceMWhen #-}
1401+{-# INLINE trace #-}
1240−traceMWhen :: (CanTrace x m) => proxy x -> Bool -> m String -> m ()
1402+trace :: (CanTrace x m) => proxy x -> String -> m ()
1241−traceMWhen _ b getMessage = when b $ do
1403+trace p message = traceM p $ return message
1405+{-# INLINE traceM #-}
1406+traceM :: forall x proxy m. (CanTrace x m) => proxy x -> m String -> m ()
1407+traceM _ getMessage = do
1242 message <- getMessage
1408 message <- getMessage
1243−#ifdef DEBUG
1409+ d <- liftIO $ readIORef $ _spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1244− spiderTimeline <- askSpiderTimelineEnv
1410+ liftIO $ debugStrLn $ replicate d ' ' <> message
1245− d <- liftIO $ readIORef $ _spiderTimeline_depth spiderTimeline
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 ()
1249− liftIO $ putStrLn $ replicate d ' ' <> message
1251whoCreatedIORef :: IORef a -> IO [String]
1450whoCreatedIORef :: IORef a -> IO [String]
1252whoCreatedIORef (IORef a) = whoCreated $! a
1451whoCreatedIORef (IORef a) = whoCreated $! a
1255groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
1453groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
1256groupByHead = \case
1454groupByHead = \case
1257 [] -> []
1455 [] -> []
@@ -1262,20 +1460,54 @@ groupByHead = \case
1262 | otherwise -> (x, xs :| []) : l
1460 | otherwise -> (x, xs :| []) : l
1264listsToForest :: Eq a => [[a]] -> Forest a
1462listsToForest :: Eq a => [[a]] -> Forest a
1265−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'
1466+showStacks :: [[String]] -> String
1467+showStacks = drawForest . listsToForest . fmap (filterStack "Reflex.Spider.Internal")
1469+filterStack :: String -> [String] -> [String]
1470+#ifdef DEBUG_HIDE_INTERNALS
1471+filterStack prefix = filter (not . (prefix `isPrefixOf`))
1473+filterStack prefix = id
1478+data EventLoopException = EventLoopException [[String]]
1479+instance Exception EventLoopException
1481+instance Show EventLoopException where
1482+ show (EventLoopException stacks) = "causality loop detected:\n" <> if null stacks
1483+ then "no location information, compile with profiling enabled for stack tree"
1484+ else showStacks stacks
1488+data EventLoopException = EventLoopException
1489+instance Exception EventLoopException
1491+instance Show EventLoopException where
1492+ show EventLoopException = "causality loop detected: \n" <>
1493+ "compile reflex with flag 'debug-cycles' and compile with profiling enabled for stack tree"
1268{-# INLINE propagateSubscriberHold #-}
1498{-# INLINE propagateSubscriberHold #-}
1269propagateSubscriberHold :: forall x p. (HasSpiderTimeline x, Patch p) => Hold x p -> p -> EventM x ()
1499propagateSubscriberHold :: forall x p. (HasSpiderTimeline x, Patch p) => Hold x p -> p -> EventM x ()
1270propagateSubscriberHold h a = do
1500propagateSubscriberHold h a = do
1271− {-# SCC "trace" #-} traceMWhen (Proxy :: Proxy x) debugPropagate $ liftIO $ do
1501+ {-# SCC "trace" #-} when debugPropagate $ traceM (Proxy :: Proxy x) $ liftIO $ do
1272 invalidators <- liftIO $ readIORef $ holdInvalidators h
1502 invalidators <- liftIO $ readIORef $ holdInvalidators h
1273 return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1503 return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1274 v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1505 v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1275 case {-# SCC "apply" #-} apply a v of
1506 case {-# SCC "apply" #-} apply a v of
1276 Nothing -> return ()
1507 Nothing -> return ()
1277 Just v' -> do
1508 Just v' -> do
1278− {-# SCC "trace2" #-} withIncreasedDepth $ tracePropagate (Proxy :: Proxy x) $ "propagateSubscriberHold: assigning Hold" <> showNodeId h
1509+ {-# SCC "trace2" #-} withIncreasedDepth (Proxy :: Proxy x) $
1510+ tracePropagate (Proxy :: Proxy x) ("propagateSubscriberHold: assigning Hold" <> showNodeId h)
1279 vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1511 vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1280 iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1512 iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1281 defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
1513 defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
@@ -1283,25 +1515,25 @@ propagateSubscriberHold h a = do
1283data SomeResetCoincidence x = forall a. SomeResetCoincidence !(EventSubscription x) !(Maybe (CoincidenceSubscribed x a)) -- The CoincidenceSubscriber will be present only if heights need to be reset
1515data SomeResetCoincidence x = forall a. SomeResetCoincidence !(EventSubscription x) !(Maybe (CoincidenceSubscribed x a)) -- The CoincidenceSubscriber will be present only if heights need to be reset
1285runBehaviorM :: BehaviorM x a -> Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]) -> IORef [SomeHoldInit x] -> IO a
1517runBehaviorM :: BehaviorM x a -> Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]) -> IORef [SomeHoldInit x] -> IO a
1286−runBehaviorM a mwi holdInits = runReaderT (unBehaviorM a) (mwi, holdInits)
1518+runBehaviorM a mwi holdInits = runReaderIO (unBehaviorM a) (mwi, holdInits)
1288askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
1520askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
1289askInvalidator = do
1521askInvalidator = do
1290− (!m, _) <- BehaviorM ask
1522+ (!m, _) <- ask
1291 case m of
1523 case m of
1292 Nothing -> return Nothing
1524 Nothing -> return Nothing
1293 Just (!wi, _) -> return $ Just wi
1525 Just (!wi, _) -> return $ Just wi
1295askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
1527askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
1296askParentsRef = do
1528askParentsRef = do
1297− (!m, _) <- BehaviorM ask
1529+ (!m, _) <- ask
1298 case m of
1530 case m of
1299 Nothing -> return Nothing
1531 Nothing -> return Nothing
1300 Just (_, !p) -> return $ Just p
1532 Just (_, !p) -> return $ Just p
1302askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
1534askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
1303askBehaviorHoldInits = do
1535askBehaviorHoldInits = do
1304− (_, !his) <- BehaviorM ask
1536+ (_, !his) <- ask
1305 return his
1537 return his
1307{-# INLINE getDynHold #-}
1539{-# INLINE getDynHold #-}
@@ -1309,30 +1541,27 @@ getDynHold :: (Defer (SomeHoldInit x) m, Patch p) => Dyn x p -> m (Hold x p)
1309getDynHold d = do
1541getDynHold d = do
1310 mh <- liftIO $ readIORef $ unDyn d
1542 mh <- liftIO $ readIORef $ unDyn d
1311 case mh of
1543 case mh of
1312− Right h -> return h
1544+ HoldDyn h -> return h
1313− Left (readV0, v') -> do
1545+ UnsafeDyn (readV0, v') -> do
1314 holdInits <- getDeferralQueue
1546 holdInits <- getDeferralQueue
1315 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1547 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1549+ BuildDyn (readV0, v') -> do
1550+ v0 <- liftIO $ runEventM readV0
1316 h <- hold v0 v'
1554 h <- hold v0 v'
1317− liftIO $ writeIORef (unDyn d) $ Right h
1555+ liftIO $ writeIORef (unDyn d) $ HoldDyn h
1318 return h
1556 return h
1320-- Always refers to 0
1559-- Always refers to 0
1321{-# NOINLINE zeroRef #-}
1560{-# NOINLINE zeroRef #-}
1322zeroRef :: IORef Height
1561zeroRef :: IORef Height
1323zeroRef = unsafePerformIO $ newIORef zeroHeight
1562zeroRef = unsafePerformIO $ newIORef zeroHeight
1325−type CanSubscribe x m =
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)
1326− ( HasSpiderTimeline x
1327− , HasCurrentHeight x m
1328− , Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m -- The things we need to lazily initialize state
1329− , Defer SomeClear m -- Wiping out event firings
1330− , Defer (SomeAssignment x) m -- Updating state
1331− , Defer (SomeResetCoincidence x) m
1335−getRootSubscribed :: GCompare k => k a -> Root x k -> Subscriber x a -> IO (WeakBagTicket, RootSubscribed x a, Maybe a)
1336getRootSubscribed k r sub = do
1565getRootSubscribed k r sub = do
1337 mSubscribed <- readIORef $ rootSubscribed r
1566 mSubscribed <- readIORef $ rootSubscribed r
1338 let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
1567 let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
@@ -1346,10 +1575,15 @@ getRootSubscribed k r sub = do
1346 let !cached = rootSubscribed r
1575 let !cached = rootSubscribed r
1347 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1576 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1348 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1577 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1349− when debugPropagate $ putStrLn $ "getRootSubscribed: calling rootInit"
1578+
1579+ tracePropagate (Proxy::Proxy x) $ "getRootSubscribed: calling rootInit"
1350 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1581 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1351 writeIORef uninitRef $! uninit
1582 writeIORef uninitRef $! uninit
1352− let subscribed = RootSubscribed
1583+#ifdef DEBUG_NODEIDS
1586+ let !subscribed = RootSubscribed
1353 { rootSubscribedKey = k
1587 { rootSubscribedKey = k
1354 , rootSubscribedCachedSubscribed = cached
1588 , rootSubscribedCachedSubscribed = cached
1355 , rootSubscribedOccurrence = getOcc
1589 , rootSubscribedOccurrence = getOcc
@@ -1357,10 +1591,20 @@ getRootSubscribed k r sub = do
1357 , rootSubscribedUninit = uninit
1591 , rootSubscribedUninit = uninit
1358 , rootSubscribedWeakSelf = weakSelf
1592 , rootSubscribedWeakSelf = weakSelf
1359#ifdef DEBUG_NODEIDS
1593#ifdef DEBUG_NODEIDS
1360− , rootSubscribedNodeId = unsafeNodeId (k, r, subs)
1594+ , rootSubscribedNodeId = nid
1363− writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "RootSubscribed"
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)
1607+ writeIORef weakSelf =<< evaluate =<< mkWeakPtr subscribed (Just finalCleanup)
1364 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
1365 occ <- getOcc
1609 occ <- getOcc
1366 return (sln, subscribed, occ)
1610 return (sln, subscribed, occ)
@@ -1377,8 +1621,90 @@ cleanupRootSubscribed self@RootSubscribed { rootSubscribedKey = k, rootSubscribe
1377subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1621subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1378subscribeRootSubscribed subscribed sub = WeakBag.insert sub (rootSubscribedSubscribers subscribed) (rootSubscribedWeakSelf subscribed) cleanupRootSubscribed
1622subscribeRootSubscribed subscribed sub = WeakBag.insert sub (rootSubscribedSubscribers subscribed) (rootSubscribedWeakSelf subscribed) cleanupRootSubscribed
1624+newtype EventSelectorInt x a = EventSelectorInt { selectInt :: Int -> Event x a }
1626+data FanInt x a = FanInt
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
1628+ , _fanInt_subscriptionRef :: {-# UNPACK #-} !(IORef (EventSubscription x)) -- This should have a valid subscription iff subscribers is non-empty
1629+ , _fanInt_occRef :: {-# UNPACK #-} !(IORef (IntMap a))
1630+#ifdef DEBUG_NODEIDS
1631+ , _fanInt_nodeId :: {-# UNPACK #-} !Int
1635+newFanInt :: IO (FanInt x a)
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
1638+ subscriptionRef <- newIORef $ error "fanInt: no subscription"
1639+ occRef <- newIORef $ error "fanInt: no occurrence"
1640+#ifdef DEBUG_NODEIDS
1641+ nodeId <- newNodeId
1644+ { _fanInt_subscribers = subscribers
1645+ , _fanInt_subscriptionRef = subscriptionRef
1646+ , _fanInt_occRef = occRef
1647+#ifdef DEBUG_NODEIDS
1648+ , _fanInt_nodeId = nodeId
1652+fanInt :: HasSpiderTimeline x => Event x (IntMap a) -> EventSelectorInt x a
1653+fanInt p = unsafePerformIO $ do
1655+ pure $ EventSelectorInt $ \k -> Event $ \sub -> do
1656+ isEmpty <- liftIO $ FastMutableIntMap.isEmpty (_fanInt_subscribers self)
1657+ when isEmpty $ do -- This is the first subscriber, so we need to subscribe to our input
1658+ let desc = "fanInt" <> showNodeId self <> ", k = " <> show k
1659+ (subscription, parentOcc) <- subscribeAndRead p $ debugSubscriber' desc $ Subscriber
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
1380{-# INLINABLE getFanSubscribed #-}
1706{-# INLINABLE getFanSubscribed #-}
1381−getFanSubscribed :: (Defer (SomeAssignment x) m, Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m, Defer SomeClear m, HasCurrentHeight x m, Defer (SomeResetCoincidence x) m, HasSpiderTimeline x, m ~ EventM x, GCompare k) => k a -> Fan x k -> Subscriber x a -> m (WeakBagTicket, FanSubscribed x k, Maybe a)
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))
1382getFanSubscribed k f sub = do
1708getFanSubscribed k f sub = do
1383 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1709 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1384 case mSubscribed of
1710 case mSubscribed of
@@ -1396,13 +1722,16 @@ getFanSubscribed k f sub = do
1396 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1722 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1397 occRef <- liftIO $ newIORef parentOcc
1723 occRef <- liftIO $ newIORef parentOcc
1398 when (isJust parentOcc) $ scheduleClear occRef
1724 when (isJust parentOcc) $ scheduleClear occRef
1725+#ifdef DEBUG_NODEIDS
1726+ nid <- liftIO newNodeId
1399 let subscribed = FanSubscribed
1728 let subscribed = FanSubscribed
1400 { fanSubscribedCachedSubscribed = fanSubscribed f
1729 { fanSubscribedCachedSubscribed = fanSubscribed f
1401 , fanSubscribedOccurrence = occRef
1730 , fanSubscribedOccurrence = occRef
1402 , fanSubscribedParent = subscription
1731 , fanSubscribedParent = subscription
1403 , fanSubscribedSubscribers = subscribersRef
1732 , fanSubscribedSubscribers = subscribersRef
1404#ifdef DEBUG_NODEIDS
1733#ifdef DEBUG_NODEIDS
1405− , fanSubscribedNodeId = unsafeNodeId f
1734+ , fanSubscribedNodeId = nid
1408 let !self = (k, subscribed)
1737 let !self = (k, subscribed)
@@ -1412,7 +1741,7 @@ getFanSubscribed k f sub = do
1412 liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
1741 liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
1413 return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
1742 return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
1415−cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k) -> IO ()
1744+cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k v) -> IO ()
1416cleanupFanSubscribed (k, subscribed) = do
1745cleanupFanSubscribed (k, subscribed) = do
1417 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1746 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1418 let reducedSubscribers = DMap.delete k subscribers
1747 let reducedSubscribers = DMap.delete k subscribers
@@ -1424,7 +1753,7 @@ cleanupFanSubscribed (k, subscribed) = do
1424 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1753 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1426{-# INLINE subscribeFanSubscribed #-}
1755{-# INLINE subscribeFanSubscribed #-}
1427−subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed x k -> Subscriber x a -> IO WeakBagTicket
1756+subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed x k v -> Subscriber x (v a) -> IO WeakBagTicket
1428subscribeFanSubscribed k subscribed sub = do
1757subscribeFanSubscribed k subscribed sub = do
1429 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1758 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1430 case DMap.lookup k subscribers of
1759 case DMap.lookup k subscribers of
@@ -1437,7 +1766,7 @@ subscribeFanSubscribed k subscribed sub = do
1437 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
1439{-# INLINABLE getSwitchSubscribed #-}
1768{-# INLINABLE getSwitchSubscribed #-}
1440−getSwitchSubscribed :: (Defer (SomeHoldInit x) m, Defer (SomeAssignment x) m, Defer (SomeMergeInit x) m, Defer SomeClear m, Defer (SomeResetCoincidence x) m, HasCurrentHeight x m, HasSpiderTimeline x, m ~ EventM x) => Switch x a -> Subscriber x a -> m (WeakBagTicket, SwitchSubscribed x a, Maybe a)
1769+getSwitchSubscribed :: HasSpiderTimeline x => Switch x a -> Subscriber x a -> EventM x (WeakBagTicket, SwitchSubscribed x a, Maybe a)
1441getSwitchSubscribed s sub = do
1770getSwitchSubscribed s sub = do
1442 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1771 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1443 case mSubscribed of
1772 case mSubscribed of
@@ -1462,6 +1791,9 @@ getSwitchSubscribed s sub = do
1462 when (isJust parentOcc) $ scheduleClear occRef
1791 when (isJust parentOcc) $ scheduleClear occRef
1463 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1792 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1464 (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
1465 let !subscribed = SwitchSubscribed
1797 let !subscribed = SwitchSubscribed
1466 { switchSubscribedCachedSubscribed = switchSubscribed s
1798 { switchSubscribedCachedSubscribed = switchSubscribed s
1467 , switchSubscribedOccurrence = occRef
1799 , switchSubscribedOccurrence = occRef
@@ -1474,7 +1806,7 @@ getSwitchSubscribed s sub = do
1474 , switchSubscribedCurrentParent = subscriptionRef
1806 , switchSubscribedCurrentParent = subscriptionRef
1475 , switchSubscribedWeakSelf = weakSelf
1807 , switchSubscribedWeakSelf = weakSelf
1476#ifdef DEBUG_NODEIDS
1808#ifdef DEBUG_NODEIDS
1477− , switchSubscribedNodeId = unsafeNodeId s
1809+ , switchSubscribedNodeId = nid
1480 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
1812 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
@@ -1493,7 +1825,7 @@ subscribeSwitchSubscribed :: SwitchSubscribed x a -> Subscriber x a -> IO WeakBa
1493subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1825subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1495{-# INLINABLE getCoincidenceSubscribed #-}
1827{-# INLINABLE getCoincidenceSubscribed #-}
1496−getCoincidenceSubscribed :: forall x a m. (Defer (SomeAssignment x) m, Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m, Defer SomeClear m, HasCurrentHeight x m, Defer (SomeResetCoincidence x) m, HasSpiderTimeline x, m ~ EventM x) => Coincidence x a -> Subscriber x a -> m (WeakBagTicket, CoincidenceSubscribed x a, Maybe a)
1828+getCoincidenceSubscribed :: forall x a. HasSpiderTimeline x => Coincidence x a -> Subscriber x a -> EventM x (WeakBagTicket, CoincidenceSubscribed x a, Maybe a)
1497getCoincidenceSubscribed c sub = do
1829getCoincidenceSubscribed c sub = do
1498 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1830 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1499 case mSubscribed of
1831 case mSubscribed of
@@ -1519,6 +1851,9 @@ getCoincidenceSubscribed c sub = do
1519 scheduleClear innerSubdRef
1851 scheduleClear innerSubdRef
1520 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1852 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1521 (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
1522 let subscribed = CoincidenceSubscribed
1857 let subscribed = CoincidenceSubscribed
1523 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1858 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1524 , coincidenceSubscribedOccurrence = occRef
1859 , coincidenceSubscribedOccurrence = occRef
@@ -1529,7 +1864,7 @@ getCoincidenceSubscribed c sub = do
1529 , coincidenceSubscribedInnerParent = innerSubdRef
1864 , coincidenceSubscribedInnerParent = innerSubdRef
1530 , coincidenceSubscribedWeakSelf = weakSelf
1865 , coincidenceSubscribedWeakSelf = weakSelf
1531#ifdef DEBUG_NODEIDS
1866#ifdef DEBUG_NODEIDS
1532− , coincidenceSubscribedNodeId = unsafeNodeId c
1867+ , coincidenceSubscribedNodeId = nid
1535 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
1870 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
@@ -1546,83 +1881,260 @@ cleanupCoincidenceSubscribed subscribed = do
1546subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1881subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1547subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1882subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1549−{-# INLINE merge #-}
1884+{-# INLINE mergeG #-}
1550−merge :: forall k x. (HasSpiderTimeline x, GCompare k) => Dynamic x (PatchDMap k (Event x)) -> Event x (DMap k Identity)
1885+mergeG :: forall k q x v. (HasSpiderTimeline x, GCompare k)
1551−merge d = cacheEvent (mergeCheap d)
1886+ => (forall a. q a -> Event x (v a))
1887+ -> DynamicS x (PatchDMap k q) -> Event x (DMap k v)
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)
1553{-# INLINE [1] mergeCheap #-}
1896{-# INLINE [1] mergeCheap #-}
1554−mergeCheap :: forall k x. (HasSpiderTimeline x, GCompare k) => Dynamic x (PatchDMap k (Event x)) -> Event x (DMap k Identity)
1897+mergeCheap
1555−mergeCheap d = Event $ \sub -> do
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
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
1556 initialParents <- readBehaviorUntracked $ dynamicCurrent d
2110 initialParents <- readBehaviorUntracked $ dynamicCurrent d
1557 accumRef <- liftIO $ newIORef $ error "merge: accumRef not yet initialized"
2111 accumRef <- liftIO $ newIORef $ error "merge: accumRef not yet initialized"
1558 heightRef <- liftIO $ newIORef $ error "merge: heightRef not yet initialized"
2112 heightRef <- liftIO $ newIORef $ error "merge: heightRef not yet initialized"
1559 heightBagRef <- liftIO $ newIORef $ error "merge: heightBagRef not yet initialized"
2113 heightBagRef <- liftIO $ newIORef $ error "merge: heightBagRef not yet initialized"
1560− parentsRef <- liftIO $ newIORef $ error "merge: parentsRef not yet initialized"
2114+ parentsRef :: IORef (DMap k s) <- liftIO $ newIORef $ error "merge: parentsRef not yet initialized"
1561− let scheduleSelf height = scheduleMerge' height heightRef $ do
2115+ changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
1562− m <- liftIO $ readIORef accumRef
2116+
1563− liftIO $ writeIORef accumRef $! DMap.empty
2117+ let subscribed = EventSubscribed
1564− --TODO: Assert that m is not empty
2118+ { eventSubscribedHeightRef = heightRef
1565− subscriberPropagate sub m
2119+ , eventSubscribedRetained = toAny (parentsRef, changeSubdRef)
1566− invalidateMyHeight = do
1567− oldHeight <- readIORef heightRef
1568− when (oldHeight /= invalidHeight) $ do -- If the height used to be valid, it must be invalid now; we should never have *more* heights than we have parents
1569− writeIORef heightRef $! invalidHeight
1570− subscriberInvalidateHeight sub oldHeight
1571− revalidateMyHeight = do
1572− currentHeight <- readIORef heightRef
1573− when (currentHeight == invalidHeight) $ do -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
1574− heights <- readIORef heightBagRef
1575− parents <- readIORef parentsRef
1576− -- When the number of heights in the bag reaches the number of parents, we should have a valid height
1577− case heightBagSize heights `compare` DMap.size parents of
1580− let height = succHeight $ heightBagMax heights
1581− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: height: " <> show height
1582− writeIORef heightRef $! height
1583− subscriberRecalculateHeight sub height
1584− GT -> error $ "revalidateMergeHeight: more heights than parents for Merge"
1585− subscriber :: forall a. k a -> Subscriber x a
1586− subscriber k = Subscriber
1587− { subscriberPropagate = \a -> do
1588− oldM <- liftIO $ readIORef accumRef
1589− let newM = DMap.insertWith (error $ "Same key fired multiple times for Merge") k (Identity a) oldM
1590− tracePropagate (Proxy :: Proxy x) $ " DMap.size oldM = " <> show (DMap.size oldM) <> "; DMap.size newM = " <> show (DMap.size newM)
1591− liftIO $ writeIORef accumRef $! newM
1592− when (DMap.null oldM) $ do -- Only schedule the firing once
1593− height <- liftIO $ readIORef heightRef
1594− --TODO: assertions about height
1595− currentHeight <- getCurrentHeight
1596− when (height <= currentHeight) $ do
1597− if height /= invalidHeight
1599− myStack <- liftIO $ whoCreatedIORef undefined --TODO
1600− error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
1602#ifdef DEBUG_CYCLES
2120#ifdef DEBUG_CYCLES
1603− nodesInvolvedInCycle <- walkInvalidHeightParents $ eventSubscribedMerge subscribed
2121+ , eventSubscribedGetParents = do
1604− stacks <- forM nodesInvolvedInCycle $ \(Some.This es) -> whoCreatedEventSubscribed es
2122+ let getParent' (_ :=> v) = _eventSubscription_subscribed (getParent v)
1605− let cycleInfo = ":\n" <> drawForest (listsToForest stacks)
2123+ fmap getParent' . DMap.toList <$> readIORef parentsRef
1606−#else
2124+ , eventSubscribedHasOwnHeightRef = False
1607− let cycleInfo = ""
2125+ , eventSubscribedWhoCreated = whoCreatedIORef heightRef
1609− error $ "Causality loop found" <> cycleInfo
2127+ }
1610− scheduleSelf height
2128+
1611− , subscriberInvalidateHeight = \old -> do --TODO: When removing a parent doesn't actually change the height, maybe we can avoid invalidating
2129+ m = Merge
1612− modifyIORef' heightBagRef $ heightBagRemove old
2130+ { _merge_parentsRef = parentsRef
1613− invalidateMyHeight
2131+ , _merge_heightBagRef = heightBagRef
1614− , subscriberRecalculateHeight = \new -> do
2132+ , _merge_heightRef = heightRef
1615− modifyIORef' heightBagRef $ heightBagAdd new
2133+ , _merge_sub = sub
1616− revalidateMyHeight
2134+ , _merge_accumRef = accumRef
1618− subscribers :: [(Maybe (DSum k Identity), Height, DSum k (MergeSubscribedParent x))] <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
2136+ (dm, heights, initialParentState) <- getInitialSubscribers initialParents $ mergeSubscriber subscribed m
1619− let s = subscriber k
2137+ let myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
1620− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead e s
1621− height <- liftIO $ getEventSubscribedHeight parentSubd
1622− return $ (fmap (\x -> k :=> Identity x) parentOcc, height, k :=> MergeSubscribedParent subscription)
1623− let dm = DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
1624− heights = fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1625− myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
1626 myHeight = if invalidHeight `elem` heights
2138 myHeight = if invalidHeight `elem` heights
1627 then invalidHeight
2139 then invalidHeight
1628 else succHeight $ heightBagMax myHeightBag
2140 else succHeight $ heightBagMax myHeightBag
@@ -1630,135 +2142,236 @@ mergeCheap d = Event $ \sub -> do
1630 let (occ, accum) = if currentHeight >= myHeight -- If we should have fired by now
2142 let (occ, accum) = if currentHeight >= myHeight -- If we should have fired by now
1631 then (if DMap.null dm then Nothing else Just dm, DMap.empty)
2143 then (if DMap.null dm then Nothing else Just dm, DMap.empty)
1632 else (Nothing, dm)
2144 else (Nothing, dm)
1633− unless (DMap.null accum) $ do
2145+ unless (DMap.null accum) $ scheduleMergeSelf m myHeight
1634− scheduleSelf myHeight
1635− occRef <- liftIO $ newIORef occ
1636− when (isJust occ) $ scheduleClear occRef
1637 liftIO $ writeIORef accumRef $! accum
2146 liftIO $ writeIORef accumRef $! accum
1638 liftIO $ writeIORef heightRef $! myHeight
2147 liftIO $ writeIORef heightRef $! myHeight
1639 liftIO $ writeIORef heightBagRef $! myHeightBag
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
1640 changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2180 changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
1641− liftIO $ writeIORef parentsRef $! DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
2181+ let subscribed = EventSubscribed
1642− let updateMe (PatchDMap p) = do
2182+ { eventSubscribedHeightRef = heightRef
1643− oldParents <- liftIO $ readIORef parentsRef
2183+ , eventSubscribedRetained = toAny (parents, changeSubdRef)
1644− let f (subscriptionsToKill, ps) (k :=> ComposeMaybe me) = do
2184+#ifdef DEBUG_CYCLES
1645− (mOldSubd, newPs) <- case me of
2185+ , eventSubscribedGetParents = fmap (_eventSubscription_subscribed . snd) <$> FastMutableIntMap.toList parents
1646− Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
2186+ , eventSubscribedHasOwnHeightRef = False
1647− Just e -> do
2187+ , eventSubscribedWhoCreated = whoCreatedIORef heightRef
1648− let s = subscriber k
2188+#endif
1649− subscription@(EventSubscription _ subd) <- subscribe e s
2189+ }
1650− newParentHeight <- liftIO $ getEventSubscribedHeight subd
2190+ let scheduleSelf = do
1651− let newParent = MergeSubscribedParent subscription
2191+ height <- liftIO $ readIORef $ heightRef
1652− liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
2192+ scheduleMerge' height heightRef $ do
1653− return $ DMap.insertLookupWithKey' (\_ new _ -> new) k newParent ps
2193+ vals <- liftIO $ FastMutableIntMap.getFrozenAndClear accum
1654− forM_ mOldSubd $ \oldSubd -> do
2194+ subscriberPropagate sub vals
1655− oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $ unMergeSubscribedParent oldSubd
2195+ invalidateMyHeight = invalidateMergeHeight' heightRef sub
1656− liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
2196+ recalculateMyHeight = do
1657− return (maybeToList (unMergeSubscribedParent <$> mOldSubd) ++ subscriptionsToKill, newPs)
2197+ currentHeight <- readIORef heightRef
1658− (subscriptionsToKill, newParents) <- 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
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?
1659− liftIO $ writeIORef parentsRef $! newParents
2199+ heights <- readIORef heightBagRef
1660− return subscriptionsToKill
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
1661 defer $ SomeMergeInit $ do
2246 defer $ SomeMergeInit $ do
1662− let s = Subscriber
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
1663 { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2264 { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
1664− tracePropagate (Proxy :: Proxy x) $ "SubscriberMerge/Change"
2265+ tracePropagate (Proxy :: Proxy x) $ "SubscriberMergeInt/Change"
1665− defer $ SomeMergeUpdate (updateMe a) invalidateMyHeight revalidateMyHeight
2266+ defer $ updateMe a
1666 , subscriberInvalidateHeight = \_ -> return ()
2267 , subscriberInvalidateHeight = \_ -> return ()
1667 , subscriberRecalculateHeight = \_ -> return ()
2268 , subscriberRecalculateHeight = \_ -> return ()
1669− (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) s
2270+ (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
1670− forM_ change $ \c -> defer $ SomeMergeUpdate (updateMe c) invalidateMyHeight revalidateMyHeight
2271+ forM_ change $ \c -> defer $ updateMe c
1671 -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
2272 -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
1672 -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
2273 -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
1673 -- its subscription.
2274 -- its subscription.
1674− liftIO $ writeIORef changeSubdRef (s, changeSubscription)
2275+ liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
1675− let unsubscribeAll = do
2276+ let unsubscribeAll = traverse_ unsubscribe =<< FastMutableIntMap.getFrozenAndClear parents
1676− parents <- readIORef parentsRef
2277+
1677− forM_ (DMap.toList parents) $ \(_ :=> MergeSubscribedParent s) -> unsubscribe s
2278+
1678− return ( EventSubscription unsubscribeAll $ EventSubscribed heightRef $ toAny (parentsRef, changeSubdRef)
2279+ return (EventSubscription unsubscribeAll subscribed, occ)
1682newtype EventSelector x k = EventSelector { select :: forall a. k a -> Event x a }
2281newtype EventSelector x k = EventSelector { select :: forall a. k a -> Event x a }
2282+newtype EventSelectorG x k v = EventSelectorG { selectG :: forall a. k a -> Event x (v a) }
1684−fan :: (HasSpiderTimeline x, GCompare k) => Event x (DMap k Identity) -> EventSelector x k
2284+fanG :: (HasSpiderTimeline x, GCompare k) => Event x (DMap k v) -> EventSelectorG x k v
1685−fan e =
2285+fanG e = unsafePerformIO $ do
2286+ ref <- newIORef Nothing
1686 let f = Fan
2287 let f = Fan
1687 { fanParent = e
2288 { fanParent = e
1688− , fanSubscribed = unsafeNewIORef e Nothing
2289+ , fanSubscribed = ref
1690− in EventSelector $ \k -> eventFan k f
2291+ pure $ EventSelectorG $ \k -> eventFan k f
1692−runHoldInits :: HasSpiderTimeline x => IORef [SomeHoldInit x] -> IORef [SomeMergeInit x] -> EventM x ()
2293+runHoldInits :: HasSpiderTimeline x => IORef [SomeHoldInit x] -> IORef [SomeDynInit x] -> IORef [SomeMergeInit x] -> EventM x ()
1693−runHoldInits holdInitRef mergeInitRef = do
2294+runHoldInits holdInitRef dynInitRef mergeInitRef = do
1694 holdInits <- liftIO $ readIORef holdInitRef
2295 holdInits <- liftIO $ readIORef holdInitRef
2296+ dynInits <- liftIO $ readIORef dynInitRef
1695 mergeInits <- liftIO $ readIORef mergeInitRef
2297 mergeInits <- liftIO $ readIORef mergeInitRef
1696− unless (null holdInits && null mergeInits) $ do
2298+ unless (null holdInits && null dynInits && null mergeInits) $ do
1697 liftIO $ writeIORef holdInitRef []
2299 liftIO $ writeIORef holdInitRef []
2300+ liftIO $ writeIORef dynInitRef []
1698 liftIO $ writeIORef mergeInitRef []
2301 liftIO $ writeIORef mergeInitRef []
1699 mapM_ initHold holdInits
2302 mapM_ initHold holdInits
2303+ mapM_ initDyn dynInits
1700 mapM_ unSomeMergeInit mergeInits
2304 mapM_ unSomeMergeInit mergeInits
1701− runHoldInits holdInitRef mergeInitRef
2305+ runHoldInits holdInitRef dynInitRef mergeInitRef
1703initHold :: HasSpiderTimeline x => SomeHoldInit x -> EventM x ()
2307initHold :: HasSpiderTimeline x => SomeHoldInit x -> EventM x ()
1704initHold (SomeHoldInit h) = void $ getHoldEventSubscription h
2308initHold (SomeHoldInit h) = void $ getHoldEventSubscription h
2310+initDyn :: HasSpiderTimeline x => SomeDynInit x -> EventM x ()
2311+initDyn (SomeDynInit d) = void $ getDynHold d
1706newEventEnv :: IO (EventEnv x)
2313newEventEnv :: IO (EventEnv x)
1707newEventEnv = do
2314newEventEnv = do
1708 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
1709 holdInitRef <- newIORef []
2316 holdInitRef <- newIORef []
2317+ dynInitRef <- newIORef []
1710 mergeUpdateRef <- newIORef []
2318 mergeUpdateRef <- newIORef []
1711 mergeInitRef <- newIORef []
2319 mergeInitRef <- newIORef []
1712 heightRef <- newIORef zeroHeight
2320 heightRef <- newIORef zeroHeight
1713 toClearRef <- newIORef []
2321 toClearRef <- newIORef []
2322+ toClearIntRef <- newIORef []
1714 toClearRootRef <- newIORef []
2323 toClearRootRef <- newIORef []
1715 coincidenceInfosRef <- newIORef []
2324 coincidenceInfosRef <- newIORef []
1716 delayedRef <- newIORef IntMap.empty
2325 delayedRef <- newIORef IntMap.empty
1717− return $ EventEnv toAssignRef holdInitRef mergeUpdateRef mergeInitRef toClearRef toClearRootRef heightRef coincidenceInfosRef delayedRef
2326+ return $ EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef
1719clearEventEnv :: EventEnv x -> IO ()
2328clearEventEnv :: EventEnv x -> IO ()
1720−clearEventEnv (EventEnv toAssignRef holdInitRef mergeUpdateRef mergeInitRef toClearRef toClearRootRef heightRef coincidenceInfosRef delayedRef) = do
2329+clearEventEnv (EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef) = do
1721 writeIORef toAssignRef []
2330 writeIORef toAssignRef []
1722 writeIORef holdInitRef []
2331 writeIORef holdInitRef []
2332+ writeIORef dynInitRef []
1723 writeIORef mergeUpdateRef []
2333 writeIORef mergeUpdateRef []
1724 writeIORef mergeInitRef []
2334 writeIORef mergeInitRef []
1725 writeIORef heightRef zeroHeight
2335 writeIORef heightRef zeroHeight
1726 writeIORef toClearRef []
2336 writeIORef toClearRef []
2337+ writeIORef toClearIntRef []
1727 writeIORef toClearRootRef []
2338 writeIORef toClearRootRef []
1728 writeIORef coincidenceInfosRef []
2339 writeIORef coincidenceInfosRef []
1729 writeIORef delayedRef IntMap.empty
2340 writeIORef delayedRef IntMap.empty
1731-- | Run an event action outside of a frame
2342-- | Run an event action outside of a frame
1732runFrame :: forall x a. HasSpiderTimeline x => EventM x a -> SpiderHost x a --TODO: This function also needs to hold the mutex
2343runFrame :: forall x a. HasSpiderTimeline x => EventM x a -> SpiderHost x a --TODO: This function also needs to hold the mutex
1733−runFrame a = SpiderHost $ ask >>= \_ -> lift $ do
2344+runFrame a = SpiderHost $ do
1734− let env = _spiderTimeline_eventEnv (spiderTimeline :: SpiderTimelineEnv x)
2345+ let env = _spiderTimeline_eventEnv $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1735 let go = do
2346 let go = do
1736 result <- a
2347 result <- a
1737− runHoldInits (eventEnvHoldInits 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
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
1738 return result
2349 return result
1739 result <- runEventM go
2350 result <- runEventM go
1740 toClear <- readIORef $ eventEnvClears env
2351 toClear <- readIORef $ eventEnvClears env
1741− 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
1742 toClearRoot <- readIORef $ eventEnvRootClears env
2355 toClearRoot <- readIORef $ eventEnvRootClears env
1743− forM_ toClearRoot $ \(SomeRootClear ref) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
2356+ forM_ toClearRoot $ \(Some (RootClear ref)) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
1744 toAssign <- readIORef $ eventEnvAssignments env
2357 toAssign <- readIORef $ eventEnvAssignments env
1745 toReconnectRef <- newIORef []
2358 toReconnectRef <- newIORef []
1746 coincidenceInfos <- readIORef $ eventEnvResetCoincidences env
2359 coincidenceInfos <- readIORef $ eventEnvResetCoincidences env
1747 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
2360 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
1748 writeIORef vRef v
2361 writeIORef vRef v
1749− when debugInvalidate $ putStrLn $ "Invalidating Hold"
2362+ traceInvalidate $ "Invalidating Hold"
1750 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
2363 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
1751 mergeUpdates <- readIORef $ eventEnvMergeUpdates env
2364 mergeUpdates <- readIORef $ eventEnvMergeUpdates env
1752 writeIORef (eventEnvMergeUpdates env) []
2365 writeIORef (eventEnvMergeUpdates env) []
1753− when debugPropagate $ putStrLn "Updating merges"
2366+ tracePropagate (Proxy::Proxy x) $ "Updating merges"
1754 mergeSubscriptionsToKill <- runEventM $ concat <$> mapM _someMergeUpdate_update mergeUpdates
2367 mergeSubscriptionsToKill <- runEventM $ concat <$> mapM _someMergeUpdate_update mergeUpdates
1755− when debugPropagate $ putStrLn "Updating merges done"
2368+ tracePropagate (Proxy::Proxy x) $ "Updating merges done"
1756 toReconnect <- readIORef toReconnectRef
2369 toReconnect <- readIORef toReconnectRef
1757 clearEventEnv env
2370 clearEventEnv env
1758 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
2371 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
1759 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
2372 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
1760 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
2373 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
1761− when debugInvalidate $ putStrLn $ "Finalizing invalidator for Switch" <> showNodeId subscribed
2374+ traceInvalidate $ "Finalizing invalidator for Switch" <> showNodeId subscribed
1762 finalize wi
2375 finalize wi
1763 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
2376 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
1764 wi' <- mkWeakPtrWithDebug i "wi'"
2377 wi' <- mkWeakPtrWithDebug i "wi'"
@@ -1766,13 +2379,13 @@ runFrame a = SpiderHost $ ask >>= \_ -> lift $ do
1766 writeIORef (switchSubscribedBehaviorParents subscribed) []
2379 writeIORef (switchSubscribedBehaviorParents subscribed) []
1767 writeIORef (eventEnvHoldInits env) [] --TODO: Should we reuse this?
2380 writeIORef (eventEnvHoldInits env) [] --TODO: Should we reuse this?
1768 e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) $ eventEnvHoldInits env
2381 e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) $ eventEnvHoldInits env
1769− runEventM $ runHoldInits (eventEnvHoldInits 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
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
1770 --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
1771 sub <- newSubscriberSwitch subscribed
2384 sub <- newSubscriberSwitch subscribed
1772− subscription <- runReaderT (unSpiderHost (runFrame ({-# SCC "subscribeSwitch" #-} subscribe e sub))) spiderTimeline --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
1774 stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
2387 stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
1775− liftIO $ putStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
2388+ liftIO $ debugStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
1776 EventRoot _ -> "EventRoot"
2389 EventRoot _ -> "EventRoot"
1777 EventNever -> "EventNever"
2390 EventNever -> "EventNever"
1778 _ -> "something else"
2391 _ -> "something else"
@@ -1787,7 +2400,7 @@ runFrame a = SpiderHost $ ask >>= \_ -> lift $ do
1787 myHeight <- readIORef $ switchSubscribedHeight subscribed
2400 myHeight <- readIORef $ switchSubscribedHeight subscribed
1788 when (parentHeight /= myHeight) $ do
2401 when (parentHeight /= myHeight) $ do
1789 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
2402 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
1790− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
2403+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
1791 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
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
1792 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
2405 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
1793 unsubscribe subscription
2406 unsubscribe subscription
@@ -1828,7 +2441,7 @@ invalidateCoincidenceHeight subscribed = do
1828 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
2441 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
1829 when (oldHeight /= invalidHeight) $ do
2442 when (oldHeight /= invalidHeight) $ do
1830 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
2443 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
1831− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
2444+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1833updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
2446updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
1834updateSwitchHeight new subscribed = do
2447updateSwitchHeight new subscribed = do
@@ -1836,7 +2449,7 @@ updateSwitchHeight new subscribed = do
1836 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
1837 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
1838 writeIORef (switchSubscribedHeight subscribed) $! new
2451 writeIORef (switchSubscribedHeight subscribed) $! new
1839− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
2452+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
1841recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
2454recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
1842recalculateCoincidenceHeight subscribed = do
2455recalculateCoincidenceHeight subscribed = do
@@ -1845,7 +2458,7 @@ recalculateCoincidenceHeight subscribed = do
1845 height <- calculateCoincidenceHeight subscribed
2458 height <- calculateCoincidenceHeight subscribed
1846 when (height /= invalidHeight) $ do
2459 when (height /= invalidHeight) $ do
1847 writeIORef (coincidenceSubscribedHeight subscribed) $! height
2460 writeIORef (coincidenceSubscribedHeight subscribed) $! height
1848− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
2461+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
1850calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
2463calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
1851calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
2464calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
@@ -1884,14 +2497,219 @@ invalidate toReconnectRef wis = do
1884-- Reflex integration
2497-- Reflex integration
1885--------------------------------------------------------------------------------
2498--------------------------------------------------------------------------------
1887−#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2500+-- | Designates the default, global Spider timeline
1888−-- When we're specializing, we include this from Reflex.Class instead, because
2501+data SpiderTimeline x
1889−-- it needs access to these types; when we're not, we want them here, so our
2502+type role SpiderTimeline nominal
1890−-- instance isn't an orphan instance.
2503+
1891−#include "SpiderTimeline.include.hs"
2504+-- | The default, global Spider environment
1892−#include "SpiderTimelineHost.include.hs"
2505+type Spider = SpiderTimeline Global
2507+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (EventM x) where
2508+ {-# INLINABLE sample #-}
2509+ sample (SpiderBehavior b) = readBehaviorUntracked b
2511+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (EventM x) where
2512+ {-# INLINABLE hold #-}
2513+ hold = holdSpiderEventM
2514+ {-# INLINABLE holdDyn #-}
2515+ holdDyn = holdDynSpiderEventM
2516+ {-# INLINABLE holdIncremental #-}
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
2589+holdSpiderEventM :: HasSpiderTimeline x => a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Behavior (SpiderTimeline x) a)
2590+holdSpiderEventM v0 e = fmap (SpiderBehavior . behaviorHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2592+holdDynSpiderEventM :: HasSpiderTimeline x => a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Dynamic (SpiderTimeline x) a)
2593+holdDynSpiderEventM v0 e = fmap (SpiderDynamic . dynamicHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2595+holdIncrementalSpiderEventM :: (HasSpiderTimeline x, Patch p) => PatchTarget p -> Reflex.Class.Event (SpiderTimeline x) p -> EventM x (Reflex.Class.Incremental (SpiderTimeline x) p)
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
2601+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (SpiderHost x) where
2602+ {-# INLINABLE hold #-}
2603+ hold v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.hold v0 e
2604+ {-# INLINABLE holdDyn #-}
2605+ holdDyn v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.holdDyn v0 e
2606+ {-# INLINABLE holdIncremental #-}
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
2634+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderHost x) where
2635+ {-# INLINABLE sample #-}
2636+ sample = runFrame . readBehaviorUntracked . unSpiderBehavior
2638+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2639+ {-# INLINABLE sample #-}
2640+ sample = Reflex.Spider.Internal.ReadPhase . Reflex.Class.sample
2642+instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2643+ {-# INLINABLE hold #-}
2644+ hold v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.hold v0 e
2645+ {-# INLINABLE holdDyn #-}
2646+ holdDyn v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.holdDyn v0 e
2647+ {-# INLINABLE holdIncremental #-}
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
2656+--------------------------------------------------------------------------------
2658+--------------------------------------------------------------------------------
2660+-- | 'SpiderEnv' is the old name for 'SpiderTimeline'
2661+{-# DEPRECATED SpiderEnv "Use 'SpiderTimelineEnv' instead" #-}
2662+type SpiderEnv = SpiderTimeline
2663+instance HasSpiderTimeline x => Reflex.Host.Class.MonadSubscribeEvent (SpiderTimeline x) (SpiderHostFrame x) where
2664+ {-# INLINABLE subscribeEvent #-}
2665+ subscribeEvent e = SpiderHostFrame $ do
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 ()
2675+ return $ SpiderEventHandle
2676+ { spiderEventHandleSubscription = subscription
2677+ , spiderEventHandleValue = val
2680+instance HasSpiderTimeline x => Reflex.Host.Class.ReflexHost (SpiderTimeline x) where
2681+ type EventTrigger (SpiderTimeline x) = RootTrigger x
2682+ type EventHandle (SpiderTimeline x) = SpiderEventHandle x
2683+ type HostFrame (SpiderTimeline x) = SpiderHostFrame x
2685+instance HasSpiderTimeline x => Reflex.Host.Class.MonadReadEvent (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2686+ {-# NOINLINE readEvent #-}
2687+ readEvent h = Reflex.Spider.Internal.ReadPhase $ fmap (fmap return) $ liftIO $ do
2688+ result <- readIORef $ spiderEventHandleValue h
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
1895unsafeNewSpiderTimelineEnv :: forall x. IO (SpiderTimelineEnv x)
2713unsafeNewSpiderTimelineEnv :: forall x. IO (SpiderTimelineEnv x)
1896unsafeNewSpiderTimelineEnv = do
2714unsafeNewSpiderTimelineEnv = do
1897 lock <- newMVar ()
2715 lock <- newMVar ()
@@ -1899,7 +2717,7 @@ unsafeNewSpiderTimelineEnv = do
1899#ifdef DEBUG
2717#ifdef DEBUG
1900 depthRef <- newIORef 0
2718 depthRef <- newIORef 0
1902− return $ SpiderTimelineEnv
2720+ return $ STE $ SpiderTimelineEnv
1903 { _spiderTimeline_lock = lock
2721 { _spiderTimeline_lock = lock
1904 , _spiderTimeline_eventEnv = env
2722 , _spiderTimeline_eventEnv = env
1905#ifdef DEBUG
2723#ifdef DEBUG
@@ -1907,41 +2725,40 @@ unsafeNewSpiderTimelineEnv = do
1910−#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
1911-- | Create a new SpiderTimelineEnv
2728-- | Create a new SpiderTimelineEnv
1912newSpiderTimeline :: IO (Some SpiderTimelineEnv)
2729newSpiderTimeline :: IO (Some SpiderTimelineEnv)
1913−newSpiderTimeline = withSpiderTimeline (pure . Some.This)
2730+newSpiderTimeline = withSpiderTimeline (pure . Some)
1915−data LocalSpiderTimeline x s
2732+data LocalSpiderTimeline (x :: Type) s
1917instance Reifies s (SpiderTimelineEnv x) =>
2734instance Reifies s (SpiderTimelineEnv x) =>
1918 HasSpiderTimeline (LocalSpiderTimeline x s) where
2735 HasSpiderTimeline (LocalSpiderTimeline x s) where
1919− spiderTimeline = localSpiderTimeline (Proxy :: Proxy s) $ reflect (Proxy :: Proxy s)
2736+ spiderTimeline = localSpiderTimeline Proxy $ reflect (Proxy :: Proxy s)
1921localSpiderTimeline
2738localSpiderTimeline
1922− :: Proxy s
2739+ :: proxy s
1923 -> SpiderTimelineEnv x
2740 -> SpiderTimelineEnv x
1924 -> SpiderTimelineEnv (LocalSpiderTimeline x s)
2741 -> SpiderTimelineEnv (LocalSpiderTimeline x s)
1925−localSpiderTimeline _ = unsafeCoerce
2742+localSpiderTimeline _ = coerce
1927-- | Pass a new timeline to the given function.
2744-- | Pass a new timeline to the given function.
1928withSpiderTimeline :: (forall x. HasSpiderTimeline x => SpiderTimelineEnv x -> IO r) -> IO r
2745withSpiderTimeline :: (forall x. HasSpiderTimeline x => SpiderTimelineEnv x -> IO r) -> IO r
1929withSpiderTimeline k = do
2746withSpiderTimeline k = do
1930 env <- unsafeNewSpiderTimelineEnv
2747 env <- unsafeNewSpiderTimelineEnv
1931 reify env $ \s -> k $ localSpiderTimeline s env
2748 reify env $ \s -> k $ localSpiderTimeline s env
1934−newtype SpiderPullM x a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2750+newtype SpiderPullM (x :: Type) a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2752+type ComputeM = EventM
1936−newtype SpiderPushM x a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2754+newtype SpiderPushM (x :: Type) a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
1938−#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
1939instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
2756instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
1940 {-# SPECIALIZE instance R.Reflex (SpiderTimeline Global) #-}
2757 {-# SPECIALIZE instance R.Reflex (SpiderTimeline Global) #-}
1941 newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
2758 newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
1942 newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
2759 newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
1943− newtype Dynamic (SpiderTimeline x) a = SpiderDynamic { unSpiderDynamic :: Dynamic x (Identity a) } -- deriving (Functor, Applicative, Monad)
2760+ newtype Dynamic (SpiderTimeline x) a = SpiderDynamic { unSpiderDynamic :: DynamicS x (Identity a) } -- deriving (Functor, Applicative, Monad)
1944− newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: Dynamic x p }
2761+ newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: DynamicS x p }
1945 type PullM (SpiderTimeline x) = SpiderPullM x
2762 type PullM (SpiderTimeline x) = SpiderPullM x
1946 type PushM (SpiderTimeline x) = SpiderPushM x
2763 type PushM (SpiderTimeline x) = SpiderPushM x
1947 {-# INLINABLE never #-}
2764 {-# INLINABLE never #-}
@@ -1954,10 +2771,15 @@ instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
1954 pushCheap f = SpiderEvent . pushCheap (coerce f) . unSpiderEvent
2771 pushCheap f = SpiderEvent . pushCheap (coerce f) . unSpiderEvent
1955 {-# INLINABLE pull #-}
2772 {-# INLINABLE pull #-}
1956 pull = SpiderBehavior . pull . coerce
2773 pull = SpiderBehavior . pull . coerce
1957− {-# INLINABLE merge #-}
2774+ {-# INLINABLE fanG #-}
1958− merge = SpiderEvent . merge . dynamicConst . (coerce :: DMap k (R.Event (SpiderTimeline x)) -> DMap k (Event x))
2775+ fanG e = R.EventSelectorG $ SpiderEvent . selectG (fanG (unSpiderEvent e))
1959− {-# INLINABLE fan #-}
2776+ {-# INLINABLE mergeG #-}
1960− fan e = R.EventSelector $ SpiderEvent . select (fan (unSpiderEvent e))
2777+ 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
1961 {-# INLINABLE switch #-}
2783 {-# INLINABLE switch #-}
1962 switch = SpiderEvent . switch . (coerce :: Behavior x (R.Event (SpiderTimeline x) a) -> Behavior x (Event x a)) . unSpiderBehavior
2784 switch = SpiderEvent . switch . (coerce :: Behavior x (R.Event (SpiderTimeline x) a) -> Behavior x (Event x a)) . unSpiderBehavior
1963 {-# INLINABLE coincidence #-}
2785 {-# INLINABLE coincidence #-}
@@ -1965,25 +2787,31 @@ instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
1965 {-# INLINABLE current #-}
2787 {-# INLINABLE current #-}
1966 current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
2788 current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
1967 {-# INLINABLE updated #-}
2789 {-# INLINABLE updated #-}
1968− updated = coerce $ SpiderEvent . dynamicUpdated . unSpiderDynamic
2790+ updated = SpiderEvent #. dynamicUpdated .# fmap coerce . unSpiderDynamic
1969 {-# INLINABLE unsafeBuildDynamic #-}
2791 {-# INLINABLE unsafeBuildDynamic #-}
1970− unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeDyn (coerce readV0) $ coerce $ unSpiderEvent v'
2792+ unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (coerce readV0) $ coerce $ unSpiderEvent v'
1971 {-# INLINABLE unsafeBuildIncremental #-}
2793 {-# INLINABLE unsafeBuildIncremental #-}
1972− unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeDyn (coerce readV0) $ unSpiderEvent dv
2794+ unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeBuildDynamic (coerce readV0) $ unSpiderEvent dv
1973− {-# INLINABLE mergeIncremental #-}
2795+ {-# INLINABLE mergeIncrementalG #-}
1974− mergeIncremental = SpiderEvent . merge . (unsafeCoerce :: Dynamic x (PatchDMap k (R.Event (SpiderTimeline x))) -> Dynamic x (PatchDMap k (Event x))) . unSpiderIncremental
2796+ mergeIncrementalG nt = SpiderEvent #. mergeG (coerce #. nt) .# unSpiderIncremental
2797+ {-# INLINABLE mergeIncrementalWithMoveG #-}
2798+ mergeIncrementalWithMoveG nt = SpiderEvent #. mergeWithMove (coerce #. nt) .# unSpiderIncremental
1975 {-# INLINABLE currentIncremental #-}
2799 {-# INLINABLE currentIncremental #-}
1976 currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
2800 currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
1977 {-# INLINABLE updatedIncremental #-}
2801 {-# INLINABLE updatedIncremental #-}
1978 updatedIncremental = SpiderEvent . dynamicUpdated . unSpiderIncremental
2802 updatedIncremental = SpiderEvent . dynamicUpdated . unSpiderIncremental
1979 {-# INLINABLE incrementalToDynamic #-}
2803 {-# INLINABLE incrementalToDynamic #-}
1980− incrementalToDynamic (SpiderIncremental i) = SpiderDynamic $ dynamicDynIdentity $ unsafeDyn (readBehaviorUntracked $ dynamicCurrent i) $ flip push (dynamicUpdated i) $ \p -> do
2804+ incrementalToDynamic (SpiderIncremental i) = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (readBehaviorUntracked $ dynamicCurrent i) $ flip push (dynamicUpdated i) $ \p -> do
1981 c <- readBehaviorUntracked $ dynamicCurrent i
2805 c <- readBehaviorUntracked $ dynamicCurrent i
1982 return $ Identity <$> apply p c --TODO: Avoid the redundant 'apply'
2806 return $ Identity <$> apply p c --TODO: Avoid the redundant 'apply'
1983 eventCoercion Coercion = Coercion
2807 eventCoercion Coercion = Coercion
1984 behaviorCoercion Coercion = Coercion
2808 behaviorCoercion Coercion = Coercion
1985− dynamicCoercion = unsafeCoerce --TODO: How can we avoid this unsafeCoerce? This is safe only because we know how Identity works as a Patch instance
2809+ dynamicCoercion Coercion = Coercion
1986−#endif
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))
1988data RootTrigger x a = forall k. GCompare k => RootTrigger (WeakBag (Subscriber x a), IORef (DMap k Identity), k a)
2816data RootTrigger x a = forall k. GCompare k => RootTrigger (WeakBag (Subscriber x a), IORef (DMap k Identity), k a)
@@ -2006,7 +2834,7 @@ instance MonadAtomicRef (EventM x) where
2006 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2834 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2008-- | The monad for actions that manipulate a Spider timeline identified by @x@
2836-- | The monad for actions that manipulate a Spider timeline identified by @x@
2009−newtype SpiderHost x a = SpiderHost { unSpiderHost :: ReaderT (SpiderTimelineEnv 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)
2011instance Monad (SpiderHost x) where
2839instance Monad (SpiderHost x) where
2012 {-# INLINABLE (>>=) #-}
2840 {-# INLINABLE (>>=) #-}
@@ -2015,22 +2843,27 @@ instance Monad (SpiderHost x) where
2015 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2843 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2016 {-# INLINABLE return #-}
2844 {-# INLINABLE return #-}
2017 return x = SpiderHost $ return x
2845 return x = SpiderHost $ return x
2846+#if !MIN_VERSION_base(4,13,0)
2018 {-# INLINABLE fail #-}
2847 {-# INLINABLE fail #-}
2019− fail s = SpiderHost $ fail s
2848+ fail = MonadFail.fail
2851+instance MonadFail (SpiderHost x) where
2852+ {-# INLINABLE fail #-}
2853+ fail s = SpiderHost $ MonadFail.fail s
2021-- | Run an action affecting the global Spider timeline; this will be guarded by
2855-- | Run an action affecting the global Spider timeline; this will be guarded by
2022-- a mutex for that timeline
2856-- a mutex for that timeline
2023runSpiderHost :: SpiderHost Global a -> IO a
2857runSpiderHost :: SpiderHost Global a -> IO a
2024−runSpiderHost (SpiderHost a) = runReaderT a globalSpiderTimelineEnv
2858+runSpiderHost (SpiderHost a) = a
2026−#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2027-- | Run an action affecting a given Spider timeline; this will be guarded by a
2860-- | Run an action affecting a given Spider timeline; this will be guarded by a
2028-- mutex for that timeline
2861-- mutex for that timeline
2029runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimelineEnv x -> IO a
2862runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimelineEnv x -> IO a
2030−runSpiderHostForTimeline (SpiderHost a) = runReaderT a
2863+runSpiderHostForTimeline (SpiderHost a) _ = a
2033−newtype SpiderHostFrame x a = SpiderHostFrame { runSpiderHostFrame :: EventM x a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2865+newtype SpiderHostFrame (x :: Type) a = SpiderHostFrame { runSpiderHostFrame :: EventM x a }
2866+ deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2035instance Monad (SpiderHostFrame x) where
2868instance Monad (SpiderHostFrame x) where
2036 {-# INLINABLE (>>=) #-}
2869 {-# INLINABLE (>>=) #-}
@@ -2039,15 +2872,21 @@ instance Monad (SpiderHostFrame x) where
2039 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2872 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2040 {-# INLINABLE return #-}
2873 {-# INLINABLE return #-}
2041 return x = SpiderHostFrame $ return x
2874 return x = SpiderHostFrame $ return x
2875+#if !MIN_VERSION_base(4,13,0)
2042 {-# INLINABLE fail #-}
2876 {-# INLINABLE fail #-}
2043 fail s = SpiderHostFrame $ fail s
2877 fail s = SpiderHostFrame $ fail s
2880+instance NotReady (SpiderTimeline x) (SpiderHostFrame x) where
2881+ notReadyUntil _ = pure ()
2045−newEventWithTriggerIO :: (RootTrigger x a -> IO (IO ())) -> IO (Event x a)
2884+newEventWithTriggerIO :: forall x a. HasSpiderTimeline x => (RootTrigger x a -> IO (IO ())) -> IO (Event x a)
2046newEventWithTriggerIO f = do
2885newEventWithTriggerIO f = do
2047 es <- newFanEventWithTriggerIO $ \Refl -> f
2886 es <- newFanEventWithTriggerIO $ \Refl -> f
2048 return $ select es Refl
2887 return $ select es Refl
2050−newFanEventWithTriggerIO :: GCompare k => (forall a. k a -> RootTrigger x a -> IO (IO ())) -> IO (EventSelector x k)
2889+newFanEventWithTriggerIO :: (HasSpiderTimeline x, GCompare k) => (forall a. k a -> RootTrigger x a -> IO (IO ())) -> IO (EventSelector x k)
2051newFanEventWithTriggerIO f = do
2890newFanEventWithTriggerIO f = do
2052 occRef <- newIORef DMap.empty
2891 occRef <- newIORef DMap.empty
2053 subscribedRef <- newIORef DMap.empty
2892 subscribedRef <- newIORef DMap.empty
@@ -2081,3 +2920,11 @@ instance MonadAtomicRef (SpiderHostFrame x) where
2081instance PrimMonad (SpiderHostFrame x) where
2920instance PrimMonad (SpiderHostFrame x) where
2082 type PrimState (SpiderHostFrame x) = PrimState IO
2921 type PrimState (SpiderHostFrame x) = PrimState IO
2083 primitive = SpiderHostFrame . EventM . primitive
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 ()