@@ -2,86 +2,132 @@
2{-# LANGUAGE CPP #-}
2{-# LANGUAGE CPP #-}
3{-# LANGUAGE ConstraintKinds #-}
3{-# LANGUAGE ConstraintKinds #-}
4{-# LANGUAGE EmptyDataDecls #-}
4{-# LANGUAGE EmptyDataDecls #-}
5+{-# LANGUAGE ExistentialQuantification #-}
5{-# LANGUAGE FlexibleContexts #-}
6{-# LANGUAGE FlexibleContexts #-}
6{-# LANGUAGE FlexibleInstances #-}
7{-# LANGUAGE FlexibleInstances #-}
7{-# LANGUAGE FunctionalDependencies #-}
8{-# LANGUAGE FunctionalDependencies #-}
8{-# LANGUAGE GADTs #-}
9{-# LANGUAGE GADTs #-}
9{-# LANGUAGE GeneralizedNewtypeDeriving #-}
10{-# LANGUAGE GeneralizedNewtypeDeriving #-}
10{-# LANGUAGE LambdaCase #-}
11{-# LANGUAGE LambdaCase #-}
11−{-# LANGUAGE MagicHash #-}
12−{-# LANGUAGE MultiParamTypeClasses #-}
13−{-# LANGUAGE MultiWayIf #-}
14{-# LANGUAGE RankNTypes #-}
12{-# LANGUAGE RankNTypes #-}
15{-# LANGUAGE RoleAnnotations #-}
13{-# LANGUAGE RoleAnnotations #-}
16{-# LANGUAGE ScopedTypeVariables #-}
14{-# LANGUAGE ScopedTypeVariables #-}
17{-# LANGUAGE TypeFamilies #-}
15{-# LANGUAGE TypeFamilies #-}
18{-# LANGUAGE TypeOperators #-}
16{-# LANGUAGE TypeOperators #-}
19{-# LANGUAGE UndecidableInstances #-}
17{-# LANGUAGE UndecidableInstances #-}
18+{-# LANGUAGE PolyKinds #-}
19+{-# LANGUAGE DeriveFunctor #-}
20+{-# LANGUAGE StandaloneDeriving #-}
21+{-# LANGUAGE InstanceSigs #-}
22+{-# LANGUAGE MultiWayIf #-}
24+#ifdef USE_REFLEX_OPTIMIZER
20{-# OPTIONS_GHC -fplugin=Reflex.Optimizer #-}
25{-# OPTIONS_GHC -fplugin=Reflex.Optimizer #-}
21−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
22−{-# OPTIONS_GHC -fno-warn-orphans #-}
27+{-# OPTIONS_GHC -Wunused-binds #-}
24-- | 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
25-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
29-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
26−module Reflex.Spider.Internal where
30+module Reflex.Spider.Internal (module Reflex.Spider.Internal) where
32+#if MIN_VERSION_base(4,10,0)
28−import Control.Applicative
33+import Control.Applicative (liftA2)
29import Control.Concurrent
35import Control.Concurrent
30import Control.Exception
36import Control.Exception
31−import Control.Monad hiding (forM, forM_, mapM, mapM_, sequence)
37+import Control.Monad hiding (forM, forM_, mapM, mapM_)
32import Control.Monad.Exception
38import Control.Monad.Exception
33−import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_, sequence)
39+import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_)
34import Control.Monad.Primitive
40import Control.Monad.Primitive
35−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
36import Control.Monad.Ref
44import Control.Monad.Ref
45+import Control.Monad.Fail (MonadFail)
46+import qualified Control.Monad.Fail as MonadFail
37import Data.Align
47import Data.Align
38import Data.Coerce
48import Data.Coerce
39−import Data.Dependent.Map (DMap, DSum (..))
49+import Data.Dependent.Map (DMap)
40import 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
41import Data.Foldable hiding (concat, elem, sequence_)
54import Data.Foldable hiding (concat, elem, sequence_)
43import Data.Functor.Constant
55import Data.Functor.Constant
56+import Data.Functor.Misc
44import Data.Functor.Product
57import Data.Functor.Product
45import Data.GADT.Compare
58import Data.GADT.Compare
46import Data.IntMap.Strict (IntMap)
59import Data.IntMap.Strict (IntMap)
47import qualified Data.IntMap.Strict as IntMap
60import qualified Data.IntMap.Strict as IntMap
48import Data.IORef
61import Data.IORef
49−import Data.List hiding (foldl')
62+import Data.Kind (Type)
50−import Data.Maybe
63+import Data.Maybe hiding (mapMaybe)
51−import Data.Monoid ((<>))
64+import Data.Monoid (mempty, (<>))
52import Data.Proxy
65import Data.Proxy
53−import Data.Some (Some)
54−import qualified Data.Some as Some
55import Data.These
66import Data.These
56import Data.Traversable
67import Data.Traversable
57−import Data.Type.Coercion
68+import Data.Type.Equality ((:~:)(Refl))
58−import Data.Word
69+import Data.Witherable (Filterable, mapMaybe)
59−import GHC.Exts
70+import GHC.Exts hiding (toList)
60import GHC.IORef (IORef (..))
71import GHC.IORef (IORef (..))
61import GHC.Stack
72import GHC.Stack
73+import Reflex.FastWeak
62import System.IO.Unsafe
74import System.IO.Unsafe
63import System.Mem.Weak
75import System.Mem.Weak
64import 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 (..))
66#ifdef DEBUG_CYCLES
87#ifdef DEBUG_CYCLES
67import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
88import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
68import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
91import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
69import qualified Data.List.NonEmpty as NonEmpty
92import qualified Data.List.NonEmpty as NonEmpty
70−import Data.Monoid (mempty)
71import Data.Tree (Forest, Tree (..), drawForest)
93import Data.Tree (Forest, Tree (..), drawForest)
72−#endif
94+import Data.List (isPrefixOf)
96+import Data.FastWeakBag (FastWeakBag, FastWeakBagTicket)
97+import qualified Data.FastWeakBag as FastWeakBag
99+import Data.Reflection
100+import Data.Some (Some(Some))
101+import Data.Type.Coercion
102+import Data.Profunctor.Unsafe ((#.), (.#))
74−import Data.WeakBag (WeakBag, WeakBagTicket)
103+import Data.WeakBag (WeakBag, WeakBagTicket, _weakBag_children)
75import qualified Data.WeakBag as WeakBag
104import qualified Data.WeakBag as WeakBag
105+import qualified Reflex.Class
76import qualified Reflex.Class as R
106import qualified Reflex.Class as R
77−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
107+import qualified Reflex.Host.Class
78−import Reflex.Class (SpiderTimeline, Global)
108+import Reflex.NotReady.Class
110+import qualified Data.Patch.DMapWithMove as PatchDMapWithMove
111+import Reflex.PerformEvent.Base (PerformEventT)
113+#ifdef DEBUG_TRACE_EVENTS
114+import qualified Data.ByteString.Char8 as BS8
115+import System.IO (stderr)
116+import Data.List (isPrefixOf)
81−import qualified Reflex.Host.Class as R
83−-- Note: must come last to silence warnings due to AMP on GHC < 7.10
119+-- TODO stdout might not be the best channel for debug output
84−import Prelude hiding (any, concat, mapM, mapM_, sequence)
120+debugStrLn :: String -> IO ()
121+debugStrLn = putStrLn
123+#ifdef DEBUG_TRACE_EVENTS
124+withStackOneLine :: (BS8.ByteString -> a) -> a
125+withStackOneLine expr = unsafePerformIO $ do
126+ stack <- currentCallStack
127+ return (expr . BS8.pack . unwords . dropInternal . reverse $ stack)
128+ where dropInternal = filterStack "Reflex.Spider.Internal"
86debugPropagate :: Bool
132debugPropagate :: Bool
@@ -90,28 +136,42 @@ debugInvalidateHeight :: Bool
90debugInvalidate :: Bool
136debugInvalidate :: Bool
92#ifdef DEBUG
138#ifdef DEBUG
94#define DEBUG_NODEIDS
139#define DEBUG_NODEIDS
141+#ifdef DEBUG_TRACE_PROPAGATION
96debugPropagate = True
142debugPropagate = True
144+debugPropagate = False
147+#ifdef DEBUG_TRACE_HEIGHT
148+debugInvalidateHeight = True
98debugInvalidateHeight = False
150debugInvalidateHeight = False
153+#ifdef DEBUG_TRACE_INVALIDATION
100debugInvalidate = True
154debugInvalidate = True
156+debugInvalidate = False
102class HasNodeId a where
159class HasNodeId a where
103 getNodeId :: a -> Int
160 getNodeId :: a -> Int
105−instance HasNodeId (Hold x p a) where
162+instance HasNodeId (CacheSubscribed x a) where
163+ getNodeId = _cacheSubscribed_nodeId
165+instance HasNodeId (FanInt x a) where
106− getNodeId = holdNodeId
166+ getNodeId = _fanInt_nodeId
108−instance HasNodeId (PushSubscribed x a b) where
168+instance HasNodeId (Hold x p) where
109− getNodeId = pushSubscribedNodeId
169+ getNodeId = holdNodeId
111instance HasNodeId (SwitchSubscribed x a) where
171instance HasNodeId (SwitchSubscribed x a) where
112 getNodeId = switchSubscribedNodeId
172 getNodeId = switchSubscribedNodeId
114−instance HasNodeId (FanSubscribed x a) where
174+instance HasNodeId (FanSubscribed x v a) where
115 getNodeId = fanSubscribedNodeId
175 getNodeId = fanSubscribedNodeId
117instance HasNodeId (CoincidenceSubscribed x a) where
177instance HasNodeId (CoincidenceSubscribed x a) where
@@ -125,41 +185,16 @@ instance HasNodeId (Pull x a) where
126{-# INLINE showNodeId #-}
186{-# INLINE showNodeId #-}
127showNodeId :: HasNodeId a => a -> String
187showNodeId :: HasNodeId a => a -> String
128−showNodeId = ("#"<>) . show . getNodeId
188+showNodeId = showNodeId' . getNodeId
130−showSubscriberType :: Subscriber x a -> String
190+showNodeId' :: Int -> String
131−showSubscriberType = \case
191+showNodeId' = ("#"<>) . show
132− SubscriberPush _ _ -> "SubscriberPush"
192+
133− SubscriberMerge _ _ -> "SubscriberMerge"
134− SubscriberFan _ -> "SubscriberFan"
135− SubscriberMergeChange _ -> "SubscriberMergeChange"
136− SubscriberHold _ -> "SubscriberHold"
137− SubscriberHoldIdentity _ -> "SubscriberHoldIdentity"
138− SubscriberSwitch _ -> "SubscriberSwitch"
139− SubscriberCoincidenceOuter _ -> "SubscriberCoincidenceOuter"
140− SubscriberCoincidenceInner _ -> "SubscriberCoincidenceInner"
141− SubscriberHandle -> "SubscriberHandle"
143−showEventType :: Event x a -> String
144−showEventType = \case
145− EventRoot _ _ -> "EventRoot"
146− EventNever -> "EventNever"
147− EventPush _ -> "EventPush"
148− EventMerge _ -> "EventMerge"
149− EventFan _ _ -> "EventFan"
150− EventSwitch _ -> "EventSwitch"
151− EventCoincidence _ -> "EventCoincidence"
152− EventHold _ -> "EventHold"
153− EventDyn _ -> "EventDyn"
154− EventHoldIdentity _ -> "EventHoldIdentity"
155− EventDynIdentity _ -> "EventDynIdentity"
159debugPropagate = False
196debugPropagate = False
161debugInvalidateHeight = False
197debugInvalidateHeight = False
163debugInvalidate = False
198debugInvalidate = False
165-- 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
@@ -167,6 +202,10 @@ debugInvalidate = False
167showNodeId :: a -> String
202showNodeId :: a -> String
168showNodeId _ = ""
203showNodeId _ = ""
205+{-# INLINE showNodeId' #-}
206+showNodeId' :: Int -> String
172#ifdef DEBUG_NODEIDS
211#ifdef DEBUG_NODEIDS
@@ -176,14 +215,22 @@ nextNodeIdRef = unsafePerformIO $ newIORef 1
177newNodeId :: IO Int
216newNodeId :: IO Int
178newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
217newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
180−{-# NOINLINE unsafeNodeId #-}
181−unsafeNodeId :: a -> Int
182−unsafeNodeId a = unsafePerformIO $ do
220+--------------------------------------------------------------------------------
222+--------------------------------------------------------------------------------
224+--NB: Once you subscribe to an Event, you must always hold on the the WHOLE EventSubscription you get back
225+-- If you do not retain the subscription, you may be prematurely unsubscribed from the parent event.
226+data EventSubscription x = EventSubscription
227+ { _eventSubscription_unsubscribe :: !(IO ())
228+ , _eventSubscription_subscribed :: {-# UNPACK #-} !(EventSubscribed x)
231+unsubscribe :: EventSubscription x -> IO ()
232+unsubscribe (EventSubscription u _) = u
187--------------------------------------------------------------------------------
234--------------------------------------------------------------------------------
189--------------------------------------------------------------------------------
236--------------------------------------------------------------------------------
@@ -194,86 +241,174 @@ newtype Event x a = Event { unEvent :: Subscriber x a -> EventM x (EventSubscrip
194subscribeAndRead :: Event x a -> Subscriber x a -> EventM x (EventSubscription x, Maybe a)
241subscribeAndRead :: Event x a -> Subscriber x a -> EventM x (EventSubscription x, Maybe a)
195subscribeAndRead = unEvent
242subscribeAndRead = unEvent
197−{-# RULES "pushCheap/cacheEvent" forall f e. pushCheap f (cacheEvent e) = pushCheap f e #-}
245+"cacheEvent/cacheEvent" forall e. cacheEvent (cacheEvent e) = cacheEvent e
198−{-# RULES "hold/cacheEvent" forall f e. hold f (cacheEvent e) = hold f e #-}
246+"cacheEvent/pushCheap" forall f e. pushCheap f (cacheEvent e) = cacheEvent (pushCheap f e)
200− "subscribeAndRead/cacheEvent" forall e. subscribeAndRead (cacheEvent e) = subscribeAndRead e
247+"hold/cacheEvent" forall f e. hold f (cacheEvent e) = hold f e
203-- | 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
204-- 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
205-- efficient than 'push'
252-- efficient than 'push'
206−{- INLINABLE pushCheap #-}
207{-# INLINE [1] pushCheap #-}
253{-# INLINE [1] pushCheap #-}
208pushCheap :: 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
209−pushCheap f e = Event $ \sub -> do
255+pushCheap !f e = Event $ \sub -> do
210− (subscription, occ) <- subscribeAndRead e $ sub
256+ (subscription, occ) <- subscribeAndRead e $ debugSubscriber' "push" $ sub
211 { subscriberPropagate = \a -> do
257 { subscriberPropagate = \a -> do
212− mb <- runComputeM $ f a
258+ mb <- f a
213 mapM_ (subscriberPropagate sub) mb
259 mapM_ (subscriberPropagate sub) mb
215− occ' <- join <$> mapM (runComputeM . f) occ
261+ occ' <- join <$> mapM f occ
216 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
218data CacheSubscribed x a
301data CacheSubscribed x a
219− = CacheSubscribed { _cacheSubscribed_subscribers :: {-# UNPACK #-} !(WeakBag (Subscriber x a))
302+ = CacheSubscribed { _cacheSubscribed_subscribers :: {-# UNPACK #-} !(FastWeakBag (Subscriber x a))
220− , _cacheSubscribed_weakSelf :: {-# UNPACK #-} !(IORef (Weak (CacheSubscribed x a)))
221 , _cacheSubscribed_parent :: {-# UNPACK #-} !(EventSubscription x)
303 , _cacheSubscribed_parent :: {-# UNPACK #-} !(EventSubscription x)
222− , _cacheSubscribed_cached :: {-# UNPACK #-} !(IORef (Maybe (CacheSubscribed x a)))
223 , _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
226-- | Construct an 'Event' whose value is guaranteed not to be recomputed
325-- | Construct an 'Event' whose value is guaranteed not to be recomputed
227-- repeatedly
326-- repeatedly
229--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
230−--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
231--subscriber joins
330--subscriber joins
232−{-# NOINLINE [1] cacheEvent #-}
331+{-# NOINLINE [0] cacheEvent #-}
233−cacheEvent :: HasSpiderTimeline x => Event x a -> Event x a
332+cacheEvent :: forall x a. HasSpiderTimeline x => Event x a -> Event x a
334+#ifdef DEBUG_TRACE_EVENTS
335+ withStackOneLine $ \callSite -> Event $
339+ unsafePerformIO $ do
340+ mSubscribedRef :: IORef (FastWeak (CacheSubscribed x a))
341+ <- newIORef emptyFastWeak
234−cacheEvent e = Event $ \sub -> {-# SCC "cacheEvent" #-} do
342+ pure $ \sub -> {-# SCC "cacheEvent" #-} do
235− let !mSubscribedRef = unsafeNewIORef e Nothing
343+#ifdef DEBUG_TRACE_EVENTS
344+ unless (BS8.null callSite) $ liftIO $ BS8.hPutStrLn stderr callSite
236− mSubscribed <- liftIO $ readIORef mSubscribedRef
346+ subscribedTicket <- liftIO (readIORef mSubscribedRef >>= getFastWeakTicket) >>= \case
237− case mSubscribed of
347+ Just subscribedTicket -> return subscribedTicket
238− Just subscribed -> liftIO $ do
348+ Nothing -> do
239− ticket <- WeakBag.insert sub (_cacheSubscribed_subscribers subscribed) (_cacheSubscribed_weakSelf subscribed) cleanupCacheSubscribed
349+#ifdef DEBUG_NODEIDS
240− occ <- readIORef $ _cacheSubscribed_occurrence subscribed
350+ nodeId <- liftIO newNodeId
241− let es = EventSubscribed
351+#endif
242− { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ _cacheSubscribed_parent subscribed
352+ subscribers <- liftIO FastWeakBag.empty
243− , eventSubscribedRetained = toAny subscribed
353+ occRef <- liftIO $ newIORef Nothing -- This should never be read prior to being set below
244− }
354+#ifdef DEBUG_NODEIDS
245− return (EventSubscription (WeakBag.remove ticket >> touch ticket) es, occ)
355+ (parentSub, occ) <- subscribeAndRead e $ debugSubscriber' ("cacheEvent" <> showNodeId' nodeId) $ Subscriber
246− Nothing -> do
356+#else
247− weakSelf <- liftIO $ newIORef $ error "cacheEvent: weakSelf not yet intialized"
248− (subscribers, ticket) <- liftIO $ WeakBag.singleton sub weakSelf cleanupCacheSubscribed
249− occRef <- liftIO $ newIORef undefined
250− (parentSub, occ) <- subscribeAndRead e $ Subscriber
357+ (parentSub, occ) <- subscribeAndRead e $ Subscriber
251− { subscriberPropagate = \a -> do
359+ { subscriberPropagate = \a -> do
252− liftIO $ writeIORef occRef $ Just a
360+ liftIO $ writeIORef occRef (Just a)
253− scheduleClear occRef
361+ scheduleClear occRef
254− propagate a subscribers
362+ propagateFast a subscribers
255− , subscriberInvalidateHeight = \old -> do
256− WeakBag.traverse subscribers $ invalidateSubscriberHeight old
363+ , subscriberInvalidateHeight = FastWeakBag.traverse_ subscribers . invalidateSubscriberHeight
257− , subscriberRecalculateHeight = \new -> do
258− WeakBag.traverse subscribers $ recalculateSubscriberHeight new
364+ , subscriberRecalculateHeight = FastWeakBag.traverse_ subscribers . recalculateSubscriberHeight
366+ when (isJust occ) $ do
367+ liftIO $ writeIORef occRef occ -- Set the initial value of occRef; we don't need to do this if occ is Nothing
368+ scheduleClear occRef
369+ let !subscribed = CacheSubscribed
370+ { _cacheSubscribed_subscribers = subscribers
371+ , _cacheSubscribed_parent = parentSub
372+ , _cacheSubscribed_occurrence = occRef
374+ , _cacheSubscribed_nodeId = nodeId
377+ subscribedTicket <- liftIO $ mkFastWeakTicket subscribed
378+ liftIO $ writeIORef mSubscribedRef =<< getFastWeakTicketWeak subscribedTicket
379+ return subscribedTicket
380+ liftIO $ cacheSubscription sub mSubscribedRef subscribedTicket
382+cacheSubscription :: Subscriber x a -> IORef (FastWeak (CacheSubscribed x a))
383+ -> FastWeakTicket (CacheSubscribed x a) -> IO (EventSubscription x, Maybe a)
384+cacheSubscription sub mSubscribedRef subscribedTicket = do
385+ subscribed <- getFastWeakTicketValue subscribedTicket
386+ ticket <- FastWeakBag.insert sub $ _cacheSubscribed_subscribers subscribed
387+ occ <- readIORef $ _cacheSubscribed_occurrence subscribed
389+ let parentSub = _cacheSubscribed_parent subscribed
390+ es = EventSubscription
391+ { _eventSubscription_unsubscribe = do
392+ FastWeakBag.remove ticket
394+ isEmpty <- FastWeakBag.isEmpty $ _cacheSubscribed_subscribers subscribed
396+ writeIORef mSubscribedRef emptyFastWeak
397+ unsubscribe parentSub
399+ touch subscribedTicket
400+ , _eventSubscription_subscribed = EventSubscribed
401+ { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed parentSub
402+ , eventSubscribedRetained = toAny subscribedTicket
404+ , eventSubscribedGetParents = return [_eventSubscription_subscribed parentSub]
405+ , eventSubscribedHasOwnHeightRef = False
406+ , eventSubscribedWhoCreated = whoCreatedIORef mSubscribedRef
260− liftIO $ writeIORef occRef occ
410+ return (es, occ)
261− when (isJust occ) $ scheduleClear occRef
262− let !subscribed = CacheSubscribed
263− { _cacheSubscribed_subscribers = subscribers
264− , _cacheSubscribed_weakSelf = weakSelf
265− , _cacheSubscribed_parent = parentSub
266− , _cacheSubscribed_cached = mSubscribedRef
267− , _cacheSubscribed_occurrence = occRef
269− liftIO $ writeIORef mSubscribedRef $ Just subscribed
270− liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "PushSubscribed"
271− return (EventSubscription (WeakBag.remove ticket >> touch ticket) (EventSubscribed (eventSubscribedHeightRef $ _eventSubscription_subscribed parentSub) (toAny subscribed)), occ)
273−cleanupCacheSubscribed :: CacheSubscribed x a -> IO ()
274−cleanupCacheSubscribed self = do
275− unsubscribe $ _cacheSubscribed_parent self
276− writeIORef (_cacheSubscribed_cached self) Nothing
278subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x)
413subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x)
279subscribe e s = fst <$> subscribeAndRead e s
414subscribe e s = fst <$> subscribeAndRead e s
@@ -285,13 +420,16 @@ wrap tag getSpecificSubscribed sub = do
285 let es = tag subd
420 let es = tag subd
286 return (EventSubscription (WeakBag.remove sln >> touch sln) es, occ)
421 return (EventSubscription (WeakBag.remove sln >> touch sln) es, occ)
288−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
289eventRoot !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)
291eventNever :: Event x a
429eventNever :: Event x a
292−eventNever = Event $ \_ -> return (EventSubscription (return ()) eventSubscribedNever, Nothing)
430+eventNever = Event $ const subscribeAndReadNever
294−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)
295eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
433eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
297eventSwitch :: HasSpiderTimeline x => Switch x a -> Event x a
435eventSwitch :: HasSpiderTimeline x => Switch x a -> Event x a
@@ -300,14 +438,14 @@ eventSwitch !s = Event $ wrap eventSubscribedSwitch $ getSwitchSubscribed s
300eventCoincidence :: HasSpiderTimeline x => Coincidence x a -> Event x a
438eventCoincidence :: HasSpiderTimeline x => Coincidence x a -> Event x a
301eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
439eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
303−eventHold :: HasSpiderTimeline x => Hold x p -> Event x p
441+eventHold :: Hold x p -> Event x p
304eventHold !h = Event $ subscribeHoldEvent h
442eventHold !h = Event $ subscribeHoldEvent h
306eventDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Event x p
444eventDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Event x p
307eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
445eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
309{-# INLINE subscribeCoincidenceInner #-}
447{-# INLINE subscribeCoincidenceInner #-}
310−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)
311subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
449subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
312 subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
450 subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
313 (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
451 (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
@@ -326,16 +464,6 @@ data Subscriber x a = Subscriber
326 , subscriberRecalculateHeight :: !(Height -> IO ())
464 , subscriberRecalculateHeight :: !(Height -> IO ())
329−--TODO: Move this comment to WeakBag
330−-- These function are constructor functions that are marked NOINLINE so they are
331−-- opaque to GHC. If we do not do this, then GHC will sometimes fuse the constructor away
332−-- so any weak references that are attached to the constructors will have their
333−-- finalizer run. Using the opaque constructor, does not see the
334−-- constructor application, so it behaves like an IORef and cannot be fused away.
336−-- The result is also evaluated to WHNF, since forcing a thunk invalidates
337−-- the weak pointer to it in some cases.
339newSubscriberHold :: (HasSpiderTimeline x, Patch p) => Hold x p -> IO (Subscriber x p)
467newSubscriberHold :: (HasSpiderTimeline x, Patch p) => Hold x p -> IO (Subscriber x p)
340newSubscriberHold h = return $ Subscriber
468newSubscriberHold h = return $ Subscriber
341 { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
469 { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
@@ -343,85 +471,68 @@ newSubscriberHold h = return $ Subscriber
343 , subscriberRecalculateHeight = \_ -> return ()
471 , subscriberRecalculateHeight = \_ -> return ()
346−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))
347−newSubscriberFan subscribed = return $ Subscriber
475+newSubscriberFan subscribed = debugSubscriber ("SubscriberFan " <> showNodeId subscribed) $ Subscriber
348 { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
476 { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
349 subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
477 subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
350− 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"
351 liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
479 liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
352 scheduleClear $ fanSubscribedOccurrence subscribed
480 scheduleClear $ fanSubscribedOccurrence subscribed
353− let f _ (Pair (Identity v) subsubs) = do
481+ let f _ (Pair v subsubs) = do
354 propagate v $ _fanSubscribedChildren_list subsubs
482 propagate v $ _fanSubscribedChildren_list subsubs
355 return $ Constant ()
483 return $ Constant ()
356 _ <- 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_
357 return ()
485 return ()
358 , subscriberInvalidateHeight = \old -> do
486 , subscriberInvalidateHeight = \old -> do
359− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
360 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
487 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
361− 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
362− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
363 , subscriberRecalculateHeight = \new -> do
489 , subscriberRecalculateHeight = \new -> do
364− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
365 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
490 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
366− 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
367− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
370newSubscriberSwitch :: 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)
371−newSubscriberSwitch subscribed = return $ Subscriber
495+newSubscriberSwitch subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
372 { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
496 { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
373− tracePropagate (Proxy :: Proxy x) $ "SubscriberSwitch" <> showNodeId subscribed
374 liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
497 liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
375 scheduleClear $ switchSubscribedOccurrence subscribed
498 scheduleClear $ switchSubscribedOccurrence subscribed
376 propagate a $ switchSubscribedSubscribers subscribed
499 propagate a $ switchSubscribedSubscribers subscribed
377 , subscriberInvalidateHeight = \_ -> do
500 , subscriberInvalidateHeight = \_ -> do
378− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
379 oldHeight <- readIORef $ switchSubscribedHeight subscribed
501 oldHeight <- readIORef $ switchSubscribedHeight subscribed
380 when (oldHeight /= invalidHeight) $ do
502 when (oldHeight /= invalidHeight) $ do
381 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
503 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
382− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
504+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
383− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
384− , subscriberRecalculateHeight = \new -> do
505+ , subscriberRecalculateHeight = (`updateSwitchHeight` subscribed)
385− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
386− updateSwitchHeight new subscribed
387− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
390newSubscriberCoincidenceOuter :: 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))
391−newSubscriberCoincidenceOuter subscribed = return $ Subscriber
509+newSubscriberCoincidenceOuter subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
392 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
510 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
393− tracePropagate (Proxy :: Proxy x) $ "SubscriberCoincidenceOuter" <> showNodeId subscribed
394 outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
511 outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
395 tracePropagate (Proxy :: Proxy x) $ " outerHeight = " <> show outerHeight
512 tracePropagate (Proxy :: Proxy x) $ " outerHeight = " <> show outerHeight
396 (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
513 (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
397 tracePropagate (Proxy :: Proxy x) $ " isJust occ = " <> show (isJust occ)
514 tracePropagate (Proxy :: Proxy x) $ " isJust occ = " <> show (isJust occ)
398 tracePropagate (Proxy :: Proxy x) $ " innerHeight = " <> show innerHeight
515 tracePropagate (Proxy :: Proxy x) $ " innerHeight = " <> show innerHeight
399 liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
517 liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
400 scheduleClear $ coincidenceSubscribedInnerParent subscribed
518 scheduleClear $ coincidenceSubscribedInnerParent subscribed
401 case occ of
519 case occ of
402− Nothing -> do
520+ Nothing ->
403 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
404 writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
522 writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
405− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
523+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
406− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
524+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
407 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
408 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
526 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
409 scheduleClear $ coincidenceSubscribedOccurrence subscribed
527 scheduleClear $ coincidenceSubscribedOccurrence subscribed
410 propagate o $ coincidenceSubscribedSubscribers subscribed
528 propagate o $ coincidenceSubscribedSubscribers subscribed
411− , subscriberInvalidateHeight = \_ -> do
412− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
413− invalidateCoincidenceHeight subscribed
529+ , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
414− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
415− , subscriberRecalculateHeight = \_ -> do
416− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
417− recalculateCoincidenceHeight subscribed
530+ , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
418− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
421newSubscriberCoincidenceInner :: 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)
422−newSubscriberCoincidenceInner subscribed = return $ Subscriber
534+newSubscriberCoincidenceInner subscribed = debugSubscriber ("SubscriberCoincidenceInner" <> showNodeId subscribed) $ Subscriber
423 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
535 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
424− tracePropagate (Proxy :: Proxy x) $ "SubscriberCoincidenceInner" <> showNodeId subscribed
425 occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
536 occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
426 case occ of
537 case occ of
427 Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
538 Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
@@ -429,14 +540,8 @@ newSubscriberCoincidenceInner subscribed = return $ Subscriber
429 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
540 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
430 scheduleClear $ coincidenceSubscribedOccurrence subscribed
541 scheduleClear $ coincidenceSubscribedOccurrence subscribed
431 propagate a $ coincidenceSubscribedSubscribers subscribed
542 propagate a $ coincidenceSubscribedSubscribers subscribed
432− , subscriberInvalidateHeight = \_ -> do
433− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
434− invalidateCoincidenceHeight subscribed
543+ , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
435− when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
436− , subscriberRecalculateHeight = \_ -> do
437− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
438− recalculateCoincidenceHeight subscribed
544+ , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
439− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
442invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
547invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
@@ -446,11 +551,18 @@ recalculateSubscriberHeight :: Height -> Subscriber x a -> IO ()
446recalculateSubscriberHeight = flip subscriberRecalculateHeight
551recalculateSubscriberHeight = flip subscriberRecalculateHeight
448-- | Propagate everything at the current height
553-- | Propagate everything at the current height
449−propagate :: a -> WeakBag (Subscriber x a) -> EventM x ()
554+propagate :: forall x a. HasSpiderTimeline x => a -> WeakBag (Subscriber x a) -> EventM x ()
450−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) $
451 -- 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
452 --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
453− WeakBag.traverse subscribers $ \s -> subscriberPropagate s a
565+ FastWeakBag.traverse_ subscribers $ \s -> subscriberPropagate s a
455--------------------------------------------------------------------------------
567--------------------------------------------------------------------------------
456-- EventSubscribed
568-- EventSubscribed
@@ -459,11 +571,16 @@ propagate a subscribers = withIncreasedDepth $ do
459toAny :: a -> Any
571toAny :: a -> Any
460toAny = 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
462data EventSubscribed x = EventSubscribed
579data EventSubscribed x = EventSubscribed
463 { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
580 { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
464 , eventSubscribedRetained :: {-# NOUNPACK #-} !Any
581 , eventSubscribedRetained :: {-# NOUNPACK #-} !Any
465#ifdef DEBUG_CYCLES
582#ifdef DEBUG_CYCLES
466− , eventSubscribedGetParents :: !(IO [Some (EventSubscribed x)]) -- For debugging loops
583+ , eventSubscribedGetParents :: !(IO [EventSubscribed x]) -- For debugging loops
467 , eventSubscribedHasOwnHeightRef :: !Bool
584 , eventSubscribedHasOwnHeightRef :: !Bool
468 , eventSubscribedWhoCreated :: !(IO [String])
585 , eventSubscribedWhoCreated :: !(IO [String])
@@ -490,13 +607,23 @@ eventSubscribedNever = EventSubscribed
490 , 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"]
494−eventSubscribedFan :: FanSubscribed x k -> EventSubscribed x
621+eventSubscribedFan :: FanSubscribed x k v -> EventSubscribed x
495eventSubscribedFan !subscribed = EventSubscribed
622eventSubscribedFan !subscribed = EventSubscribed
496 { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
623 { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
497 , eventSubscribedRetained = toAny subscribed
624 , eventSubscribedRetained = toAny subscribed
498#ifdef DEBUG_CYCLES
625#ifdef DEBUG_CYCLES
499− , eventSubscribedGetParents = return [Some.This $ _eventSubscription_subscribed $ fanSubscribedParent subscribed]
626+ , eventSubscribedGetParents = return [_eventSubscription_subscribed $ fanSubscribedParent subscribed]
500 , eventSubscribedHasOwnHeightRef = False
627 , eventSubscribedHasOwnHeightRef = False
501 , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
628 , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
@@ -509,7 +636,7 @@ eventSubscribedSwitch !subscribed = EventSubscribed
509#ifdef DEBUG_CYCLES
636#ifdef DEBUG_CYCLES
510 , eventSubscribedGetParents = do
637 , eventSubscribedGetParents = do
511 s <- readIORef $ switchSubscribedCurrentParent subscribed
638 s <- readIORef $ switchSubscribedCurrentParent subscribed
512− return [Some.This $ _eventSubscription_subscribed s]
639+ return [_eventSubscription_subscribed s]
513 , eventSubscribedHasOwnHeightRef = True
640 , eventSubscribedHasOwnHeightRef = True
514 , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
641 , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
@@ -522,8 +649,8 @@ eventSubscribedCoincidence !subscribed = EventSubscribed
522#ifdef DEBUG_CYCLES
649#ifdef DEBUG_CYCLES
523 , eventSubscribedGetParents = do
650 , eventSubscribedGetParents = do
524 innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
651 innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
525− let outerParent = Some.This $ _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
652+ let outerParent = _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
526− innerParents = maybeToList $ fmap Some.This innerSubscription
653+ innerParents = maybeToList $ innerSubscription
527 return $ outerParent : innerParents
654 return $ outerParent : innerParents
528 , eventSubscribedHasOwnHeightRef = True
655 , eventSubscribedHasOwnHeightRef = True
529 , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
656 , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
@@ -537,34 +664,22 @@ getEventSubscribedHeight es = readIORef $ eventSubscribedHeightRef es
537whoCreatedEventSubscribed :: EventSubscribed x -> IO [String]
664whoCreatedEventSubscribed :: EventSubscribed x -> IO [String]
538whoCreatedEventSubscribed = eventSubscribedWhoCreated
665whoCreatedEventSubscribed = eventSubscribedWhoCreated
540−walkInvalidHeightParents :: EventSubscribed x -> IO [Some (EventSubscribed x)]
667+walkInvalidHeightParents :: EventSubscribed x -> IO [EventSubscribed x]
541walkInvalidHeightParents s0 = do
668walkInvalidHeightParents s0 = do
542− subscribers <- flip execStateT mempty $ ($ Some.This s0) $ fix $ \loop (Some.This s) -> do
669+ subscribers <- flip execStateT mempty $ ($ s0) $ fix $ \loop s -> do
543 h <- liftIO $ readIORef $ eventSubscribedHeightRef s
670 h <- liftIO $ readIORef $ eventSubscribedHeightRef s
544 when (h == invalidHeight) $ do
671 when (h == invalidHeight) $ do
545 when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
672 when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
546− modify (Some.This s :)
673+ modify (s :)
547 mapM_ loop =<< liftIO (eventSubscribedGetParents s)
674 mapM_ loop =<< liftIO (eventSubscribedGetParents s)
548− forM_ subscribers $ \(Some.This s) -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
675+ forM_ subscribers $ \s -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
549 return subscribers
676 return subscribers
552{-# INLINE subscribeHoldEvent #-}
679{-# INLINE subscribeHoldEvent #-}
553−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)
554subscribeHoldEvent = subscribeAndRead . holdEvent
681subscribeHoldEvent = subscribeAndRead . holdEvent
556−--------------------------------------------------------------------------------
558−--------------------------------------------------------------------------------
560−data EventSubscription x = EventSubscription
561− { _eventSubscription_unsubscribe :: !(IO ())
562− , _eventSubscription_subscribed :: {-# UNPACK #-} !(EventSubscribed x)
565−unsubscribe :: EventSubscription x -> IO ()
566−unsubscribe (EventSubscription u _) = u
568--------------------------------------------------------------------------------
683--------------------------------------------------------------------------------
569-- Behavior
684-- Behavior
570--------------------------------------------------------------------------------
685--------------------------------------------------------------------------------
@@ -585,7 +700,7 @@ behaviorPull !p = Behavior $ do
585 val <- liftIO $ readIORef $ pullValue p
700 val <- liftIO $ readIORef $ pullValue p
586 case val of
701 case val of
587 Just subscribed -> do
702 Just subscribed -> do
588− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
703+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
589 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
704 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
590 liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
705 liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
591 return $ pullSubscribedValue subscribed
706 return $ pullSubscribedValue subscribed
@@ -594,7 +709,7 @@ behaviorPull !p = Behavior $ do
594 wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
709 wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
595 parentsRef <- liftIO $ newIORef []
710 parentsRef <- liftIO $ newIORef []
596 holdInits <- askBehaviorHoldInits
711 holdInits <- askBehaviorHoldInits
597− a <- liftIO $ runReaderT (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
712+ a <- liftIO $ runReaderIO (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
598 invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
713 invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
599 parents <- liftIO $ readIORef parentsRef
714 parents <- liftIO $ readIORef parentsRef
600 let subscribed = PullSubscribed
715 let subscribed = PullSubscribed
@@ -604,7 +719,7 @@ behaviorPull !p = Behavior $ do
604 , pullSubscribedParents = parents
719 , pullSubscribedParents = parents
606 liftIO $ writeIORef (pullValue p) $ Just subscribed
721 liftIO $ writeIORef (pullValue p) $ Just subscribed
607− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
722+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
610behaviorDyn :: Patch p => Dyn x p -> Behavior x (PatchTarget p)
725behaviorDyn :: Patch p => Dyn x p -> Behavior x (PatchTarget p)
@@ -615,7 +730,8 @@ readHoldTracked :: Hold x p -> BehaviorM x (PatchTarget p)
615readHoldTracked h = do
730readHoldTracked h = do
616 result <- liftIO $ readIORef $ holdValue h
731 result <- liftIO $ readIORef $ holdValue h
617 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
732 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
618− 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
619 return result
735 return result
621{-# INLINABLE readBehaviorUntracked #-}
737{-# INLINABLE readBehaviorUntracked #-}
@@ -628,42 +744,46 @@ readBehaviorUntracked b = do
628-- Dynamic
744-- Dynamic
629--------------------------------------------------------------------------------
745--------------------------------------------------------------------------------
747+type DynamicS x p = Dynamic x (PatchTarget p) p
631−data Dynamic x p = Dynamic
749+data Dynamic x target p = Dynamic
632− { dynamicCurrent :: !(Behavior x (PatchTarget p))
750+ { dynamicCurrent :: !(Behavior x target)
633− , dynamicUpdated :: !(Event x p)
751+ , dynamicUpdated :: Event x p -- This must be lazy; see the comment on holdEvent --TODO: Would this let us eliminate `Dyn`?
636−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
637dynamicHold !h = Dynamic
760dynamicHold !h = Dynamic
638 { dynamicCurrent = behaviorHold h
761 { dynamicCurrent = behaviorHold h
639 , dynamicUpdated = eventHold h
762 , dynamicUpdated = eventHold h
642−dynamicHoldIdentity :: HasSpiderTimeline x => Hold x (Identity a) -> Dynamic x (Identity a)
765+dynamicHoldIdentity :: Hold x (Identity a) -> DynamicS x (Identity a)
643dynamicHoldIdentity = dynamicHold
766dynamicHoldIdentity = dynamicHold
645−dynamicConst :: PatchTarget p -> Dynamic x p
768+dynamicConst :: PatchTarget p -> DynamicS x p
646dynamicConst !a = Dynamic
769dynamicConst !a = Dynamic
647 { dynamicCurrent = behaviorConst a
770 { dynamicCurrent = behaviorConst a
648 , dynamicUpdated = eventNever
771 , dynamicUpdated = eventNever
651−dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Dynamic x p
774+dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> DynamicS x p
652dynamicDyn !d = Dynamic
775dynamicDyn !d = Dynamic
653 { dynamicCurrent = behaviorDyn d
776 { dynamicCurrent = behaviorDyn d
654 , dynamicUpdated = eventDyn d
777 , dynamicUpdated = eventDyn d
657−dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> Dynamic x (Identity a)
780+dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> DynamicS x (Identity a)
658dynamicDynIdentity = dynamicDyn
781dynamicDynIdentity = dynamicDyn
660--------------------------------------------------------------------------------
783--------------------------------------------------------------------------------
661-- Combinators
784-- Combinators
662--------------------------------------------------------------------------------
785--------------------------------------------------------------------------------
664−--TODO: Figure out why certain things are not 'representational', then make them
665−--representational so we can use coerce
667--type role Hold representational
787--type role Hold representational
668data Hold x p
788data Hold x p
669 = Hold { holdValue :: !(IORef (PatchTarget p))
789 = Hold { holdValue :: !(IORef (PatchTarget p))
@@ -675,33 +795,46 @@ data Hold x p
798+-- | A statically allocated 'SpiderTimeline'
678{-# NOINLINE globalSpiderTimelineEnv #-}
801{-# NOINLINE globalSpiderTimelineEnv #-}
679globalSpiderTimelineEnv :: SpiderTimelineEnv Global
802globalSpiderTimelineEnv :: SpiderTimelineEnv Global
680−!globalSpiderTimelineEnv = unsafePerformIO unsafeNewSpiderTimelineEnv
803+globalSpiderTimelineEnv = unsafePerformIO unsafeNewSpiderTimelineEnv
682-- | 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
683-- value should exist for each type @x@
806-- value should exist for each type @x@
807+newtype SpiderTimelineEnv x = STE {unSTE :: SpiderTimelineEnv' x}
808+-- We implement SpiderTimelineEnv with a newtype wrapper so
809+-- we can get the coercions we want safely.
810+type role SpiderTimelineEnv nominal
684−data SpiderTimelineEnv x = SpiderTimelineEnv
812+data SpiderTimelineEnv' x = SpiderTimelineEnv
685 { _spiderTimeline_lock :: {-# UNPACK #-} !(MVar ())
813 { _spiderTimeline_lock :: {-# UNPACK #-} !(MVar ())
686 , _spiderTimeline_eventEnv :: {-# UNPACK #-} !(EventEnv x)
814 , _spiderTimeline_eventEnv :: {-# UNPACK #-} !(EventEnv x)
687#ifdef DEBUG
815#ifdef DEBUG
688 , _spiderTimeline_depth :: {-# UNPACK #-} !(IORef Int)
816 , _spiderTimeline_depth :: {-# UNPACK #-} !(IORef Int)
691−type role SpiderTimelineEnv nominal
819+type role SpiderTimelineEnv' phantom
821+instance Eq (SpiderTimelineEnv x) where
822+ _ == _ = True -- Since only one exists of each type
693instance GEq SpiderTimelineEnv where
824instance GEq SpiderTimelineEnv where
694− a `geq` b = if _spiderTimeline_lock a == _spiderTimeline_lock b
825+ a `geq` b = if _spiderTimeline_lock (unSTE a) == _spiderTimeline_lock (unSTE b)
695 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
696 else Nothing
827 else Nothing
698data EventEnv x
829data EventEnv x
699 = EventEnv { eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
830 = EventEnv { eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
700 , eventEnvHoldInits :: !(IORef [SomeHoldInit x]) -- Needed for Subscribe
831 , eventEnvHoldInits :: !(IORef [SomeHoldInit x]) -- Needed for Subscribe
832+ , eventEnvDynInits :: !(IORef [SomeDynInit x])
701 , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
833 , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
702 , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
834 , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
703− , eventEnvClears :: !(IORef [SomeClear]) -- Needed for Subscribe
835+ , eventEnvClears :: !(IORef [Some Clear]) -- Needed for Subscribe
836+ , eventEnvIntClears :: !(IORef [Some IntClear])
704− , eventEnvRootClears :: !(IORef [SomeRootClear])
837+ , eventEnvRootClears :: !(IORef [Some RootClear])
705 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
838 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
706 , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
839 , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
707 , eventEnvDelayedMerges :: !(IORef (IntMap [EventM x ()]))
840 , eventEnvDelayedMerges :: !(IORef (IntMap [EventM x ()]))
@@ -712,7 +845,7 @@ runEventM :: EventM x a -> IO a
712runEventM = unEventM
845runEventM = unEventM
714asksEventEnv :: forall x a. HasSpiderTimeline x => (EventEnv x -> a) -> EventM x a
847asksEventEnv :: forall x a. HasSpiderTimeline x => (EventEnv x -> a) -> EventM x a
715−asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (spiderTimeline :: SpiderTimelineEnv x)
848+asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (unSTE (spiderTimeline :: SpiderTimelineEnv x))
717class MonadIO m => Defer a m where
850class MonadIO m => Defer a m where
718 getDeferralQueue :: m (IORef [a])
851 getDeferralQueue :: m (IORef [a])
@@ -731,6 +864,10 @@ instance HasSpiderTimeline x => Defer (SomeHoldInit x) (EventM x) where
731 {-# INLINE getDeferralQueue #-}
864 {-# INLINE getDeferralQueue #-}
732 getDeferralQueue = asksEventEnv eventEnvHoldInits
865 getDeferralQueue = asksEventEnv eventEnvHoldInits
867+instance HasSpiderTimeline x => Defer (SomeDynInit x) (EventM x) where
868+ {-# INLINE getDeferralQueue #-}
869+ getDeferralQueue = asksEventEnv eventEnvDynInits
734instance Defer (SomeHoldInit x) (BehaviorM x) where
871instance Defer (SomeHoldInit x) (BehaviorM x) where
735 {-# INLINE getDeferralQueue #-}
872 {-# INLINE getDeferralQueue #-}
736 getDeferralQueue = BehaviorM $ asks snd
873 getDeferralQueue = BehaviorM $ asks snd
@@ -757,11 +894,7 @@ instance HasSpiderTimeline x => HasCurrentHeight x (EventM x) where
757 delayedRef <- asksEventEnv eventEnvDelayedMerges
894 delayedRef <- asksEventEnv eventEnvDelayedMerges
758 liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [subscribed]
895 liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [subscribed]
760−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
761−class x ~ Global => HasSpiderTimeline x where
763class HasSpiderTimeline x where
897class HasSpiderTimeline x where
765 -- | Retrieve the current SpiderTimelineEnv
898 -- | Retrieve the current SpiderTimelineEnv
766 spiderTimeline :: SpiderTimelineEnv x
899 spiderTimeline :: SpiderTimelineEnv x
@@ -773,28 +906,35 @@ putCurrentHeight h = do
773 heightRef <- asksEventEnv eventEnvCurrentHeight
906 heightRef <- asksEventEnv eventEnvCurrentHeight
774 liftIO $ writeIORef heightRef $! h
907 liftIO $ writeIORef heightRef $! h
776−instance HasSpiderTimeline x => Defer SomeClear (EventM x) where
909+instance HasSpiderTimeline x => Defer (Some Clear) (EventM x) where
777 {-# INLINE getDeferralQueue #-}
910 {-# INLINE getDeferralQueue #-}
778 getDeferralQueue = asksEventEnv eventEnvClears
911 getDeferralQueue = asksEventEnv eventEnvClears
780{-# INLINE scheduleClear #-}
913{-# INLINE scheduleClear #-}
781−scheduleClear :: Defer SomeClear m => IORef (Maybe a) -> m ()
914+scheduleClear :: Defer (Some Clear) m => IORef (Maybe a) -> m ()
782−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
784−instance HasSpiderTimeline x => Defer SomeRootClear (EventM x) where
925+instance HasSpiderTimeline x => Defer (Some RootClear) (EventM x) where
785 {-# INLINE getDeferralQueue #-}
926 {-# INLINE getDeferralQueue #-}
786 getDeferralQueue = asksEventEnv eventEnvRootClears
927 getDeferralQueue = asksEventEnv eventEnvRootClears
788{-# INLINE scheduleRootClear #-}
929{-# INLINE scheduleRootClear #-}
789−scheduleRootClear :: Defer SomeRootClear m => IORef (DMap k Identity) -> m ()
930+scheduleRootClear :: Defer (Some RootClear) m => IORef (DMap k Identity) -> m ()
790−scheduleRootClear r = defer $ SomeRootClear r
931+scheduleRootClear r = defer $ Some $ RootClear r
792instance HasSpiderTimeline x => Defer (SomeResetCoincidence x) (EventM x) where
933instance HasSpiderTimeline x => Defer (SomeResetCoincidence x) (EventM x) where
793 {-# INLINE getDeferralQueue #-}
934 {-# INLINE getDeferralQueue #-}
794 getDeferralQueue = asksEventEnv eventEnvResetCoincidences
935 getDeferralQueue = asksEventEnv eventEnvResetCoincidences
796-- Note: hold cannot examine its event until after the phase is over
937-- Note: hold cannot examine its event until after the phase is over
797−{- SPECIALIZE hold :: (HasSpiderTimeline x, Patch p) => PatchTarget p -> Event x p -> EventM x (Hold x p) #-}
798{-# INLINE [1] hold #-}
938{-# INLINE [1] hold #-}
799hold :: (Patch p, Defer (SomeHoldInit x) m) => PatchTarget p -> Event x p -> m (Hold x p)
939hold :: (Patch p, Defer (SomeHoldInit x) m) => PatchTarget p -> Event x p -> m (Hold x p)
800hold v0 e = do
940hold v0 e = do
@@ -817,7 +957,7 @@ hold v0 e = do
819{-# INLINE getHoldEventSubscription #-}
959{-# INLINE getHoldEventSubscription #-}
820−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)
821getHoldEventSubscription h = do
961getHoldEventSubscription h = do
822 ep <- liftIO $ readIORef $ holdParent h
962 ep <- liftIO $ readIORef $ holdParent h
823 case ep of
963 case ep of
@@ -843,9 +983,9 @@ getHoldEventSubscription h = do
844type 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])
846−--type role BehaviorM representational
847-- BehaviorM can sample behaviors
986-- BehaviorM can sample behaviors
848−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))
850instance Monad (BehaviorM x) where
990instance Monad (BehaviorM x) where
851 {-# INLINE (>>=) #-}
991 {-# INLINE (>>=) #-}
@@ -854,14 +994,16 @@ instance Monad (BehaviorM x) where
854 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
994 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
855 {-# INLINE return #-}
995 {-# INLINE return #-}
856 return x = BehaviorM $ return x
996 return x = BehaviorM $ return x
997+#if !MIN_VERSION_base(4,13,0)
857 {-# INLINE fail #-}
998 {-# INLINE fail #-}
858 fail s = BehaviorM $ fail s
999 fail s = BehaviorM $ fail s
860data BehaviorSubscribed x a
1002data BehaviorSubscribed x a
861 = forall p. BehaviorSubscribedHold (Hold x p)
1003 = forall p. BehaviorSubscribedHold (Hold x p)
862 | BehaviorSubscribedPull (PullSubscribed x a)
1004 | BehaviorSubscribedPull (PullSubscribed x a)
864−data SomeBehaviorSubscribed x = forall a. SomeBehaviorSubscribed (BehaviorSubscribed x a)
1006+newtype SomeBehaviorSubscribed x = SomeBehaviorSubscribed (Some (BehaviorSubscribed x))
866--type role PullSubscribed representational
1008--type role PullSubscribed representational
867data PullSubscribed x a
1009data PullSubscribed x a
@@ -896,7 +1038,7 @@ data RootSubscribed x a = forall k. GCompare k => RootSubscribed
899−data Root x (k :: * -> *)
1041+data Root x k
900 = 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
901 , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
1043 , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
902 , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
1044 , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
@@ -904,6 +1046,8 @@ data Root x (k :: * -> *)
905data 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)
907data SomeMergeUpdate x = SomeMergeUpdate
1051data SomeMergeUpdate x = SomeMergeUpdate
908 { _someMergeUpdate_update :: !(EventM x [EventSubscription x])
1052 { _someMergeUpdate_update :: !(EventM x [EventSubscription x])
909 , _someMergeUpdate_invalidateHeight :: !(IO ())
1053 , _someMergeUpdate_invalidateHeight :: !(IO ())
@@ -913,19 +1057,15 @@ data SomeMergeUpdate x = SomeMergeUpdate
913newtype SomeMergeInit x = SomeMergeInit { unSomeMergeInit :: EventM x () }
1057newtype SomeMergeInit x = SomeMergeInit { unSomeMergeInit :: EventM x () }
915-- EventM can do everything BehaviorM can, plus create holds
1059-- EventM can do everything BehaviorM can, plus create holds
916−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)
918−newtype ComputeM x a = ComputeM (ReaderT (IORef [SomeHoldInit x]) IO a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
920−instance Defer (SomeHoldInit x) (ComputeM x) where
921− getDeferralQueue = ComputeM ask
923−{-# INLINABLE runComputeM #-}
924−runComputeM :: Defer (SomeHoldInit x) m => ComputeM x a -> m a
925−runComputeM (ComputeM a) = liftIO . runReaderT a =<< getDeferralQueue
927newtype 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))
929data HeightBag = HeightBag
1069data HeightBag = HeightBag
930 { _heightBag_size :: {-# UNPACK #-} !Int
1070 { _heightBag_size :: {-# UNPACK #-} !Int
931 , _heightBag_contents :: !(IntMap Word) -- Number of excess in each bucket
1071 , _heightBag_contents :: !(IntMap Word) -- Number of excess in each bucket
@@ -942,7 +1082,8 @@ heightBagFromList :: [Height] -> HeightBag
942heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
1082heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
944heightBagAdd :: Height -> HeightBag -> HeightBag
1084heightBagAdd :: Height -> HeightBag -> HeightBag
945−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
947heightBagRemove :: Height -> HeightBag -> HeightBag
1088heightBagRemove :: Height -> HeightBag -> HeightBag
948heightBagRemove (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
@@ -951,6 +1092,13 @@ heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.loo
951 0 -> IntMap.delete h c
1092 0 -> IntMap.delete h c
952 _ -> 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
954heightBagMax :: HeightBag -> Height
1102heightBagMax :: HeightBag -> Height
955heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
1103heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
956 Just ((h, _), _) -> Height h
1104 Just ((h, _), _) -> Height h
@@ -968,25 +1116,25 @@ heightBagVerify b@(HeightBag s c) = if
968heightBagVerify = id
1116heightBagVerify = id
971−data FanSubscribedChildren (x :: *) k a = FanSubscribedChildren
1119+data FanSubscribedChildren x k v a = FanSubscribedChildren
972− { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x a))
1120+ { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x (v a)))
973− , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k)
1121+ , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k v)
974− , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k)))
1122+ , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k v)))
977−data FanSubscribed (x :: *) k
1125+data FanSubscribed x k v
978− = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
1126+ = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
979− , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k Identity)))
1127+ , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k v)))
980− , 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
981 , fanSubscribedParent :: !(EventSubscription x)
1129 , fanSubscribedParent :: !(EventSubscription x)
982#ifdef DEBUG_NODEIDS
1130#ifdef DEBUG_NODEIDS
983 , fanSubscribedNodeId :: Int
1131 , fanSubscribedNodeId :: Int
987−data Fan x k
1135+data Fan x k v
988− = Fan { fanParent :: !(Event x (DMap k Identity))
1136+ = Fan { fanParent :: !(Event x (DMap k v))
989− , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
1137+ , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
992data SwitchSubscribed x a
1140data SwitchSubscribed x a
@@ -1010,7 +1158,9 @@ data Switch x a
1010 , switchSubscribed :: !(IORef (Maybe (SwitchSubscribed x a)))
1158 , switchSubscribed :: !(IORef (Maybe (SwitchSubscribed x a)))
1161+#ifdef USE_TEMPLATE_HASKELL
1013{-# ANN CoincidenceSubscribed "HLint: ignore Redundant bracket" #-}
1162{-# ANN CoincidenceSubscribed "HLint: ignore Redundant bracket" #-}
1014data CoincidenceSubscribed x a
1164data CoincidenceSubscribed x a
1015 = CoincidenceSubscribed { coincidenceSubscribedCachedSubscribed :: !(IORef (Maybe (CoincidenceSubscribed x a)))
1165 = CoincidenceSubscribed { coincidenceSubscribedCachedSubscribed :: !(IORef (Maybe (CoincidenceSubscribed x a)))
1016 , coincidenceSubscribedOccurrence :: !(IORef (Maybe a))
1166 , coincidenceSubscribedOccurrence :: !(IORef (Maybe a))
@@ -1038,20 +1188,35 @@ newInvalidatorSwitch subd = return $! InvalidatorSwitch subd
1038newInvalidatorPull :: Pull x a -> IO (Invalidator x)
1188newInvalidatorPull :: Pull x a -> IO (Invalidator x)
1039newInvalidatorPull p = return $! InvalidatorPull p
1189newInvalidatorPull p = return $! InvalidatorPull p
1041−instance HasSpiderTimeline x => R.FunctorMaybe (Event x) where
1191+instance HasSpiderTimeline x => Filterable (Event x) where
1042− fmapMaybe f = push $ return . f
1192+ mapMaybe f = push $ return . f
1044instance HasSpiderTimeline x => Align (Event x) where
1194instance HasSpiderTimeline x => Align (Event x) where
1045 nil = eventNever
1195 nil = eventNever
1196+#if MIN_VERSION_these(0, 8, 0)
1197+instance HasSpiderTimeline x => Semialign (Event x) where
1046− align ea eb = R.fmapMaybe R.dmapToThese $ merge $ dynamicConst $ DMap.fromList [R.LeftTag :=> ea, R.RightTag :=> eb]
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
1048−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)
1213+newtype Dyn (x :: Type) p = Dyn { unDyn :: IORef (DynType x p) }
1050−newMapDyn :: HasSpiderTimeline x => (a -> b) -> Dynamic x (Identity a) -> Dynamic x (Identity b)
1215+newMapDyn :: HasSpiderTimeline x => (a -> b) -> DynamicS x (Identity a) -> DynamicS x (Identity b)
1051−newMapDyn f d = dynamicDynIdentity $ unsafeDyn (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
1216+newMapDyn f d = dynamicDynIdentity $ unsafeBuildDynamic (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
1053--TODO: Avoid the duplication between this and R.zipDynWith
1218--TODO: Avoid the duplication between this and R.zipDynWith
1054−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)
1055zipDynWith f da db =
1220zipDynWith f da db =
1056 let eab = align (dynamicUpdated da) (dynamicUpdated db)
1221 let eab = align (dynamicUpdated da) (dynamicUpdated db)
1057 ec = flip push eab $ \o -> do
1222 ec = flip push eab $ \o -> do
@@ -1064,28 +1229,22 @@ zipDynWith f da db =
1064 return (a, b)
1229 return (a, b)
1065 These (Identity a) (Identity b) -> return (a, b)
1230 These (Identity a) (Identity b) -> return (a, b)
1066 return $ Just $ Identity $ f a b
1231 return $ Just $ Identity $ f a b
1067− in dynamicDynIdentity $ unsafeDyn (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
1232+ in dynamicDynIdentity $ unsafeBuildDynamic (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
1069−unsafeDyn :: BehaviorM x (PatchTarget p) -> Event x p -> Dyn x p
1234+buildDynamic :: (Defer (SomeDynInit x) m, Patch p) => EventM x (PatchTarget p) -> Event x p -> m (Dyn x p)
1070−unsafeDyn readV0 v' = Dyn $ unsafeNewIORef x $ Left x
1235+buildDynamic readV0 v' = do
1071− where x = (readV0, v')
1236+ result <- liftIO $ newIORef $ BuildDyn (readV0, v')
1237+ let !d = Dyn result
1238+ defer $ SomeDynInit d
1073−newJoinDyn :: HasSpiderTimeline x => Dynamic x (Identity (Dynamic x (Identity a))) -> Dyn x (Identity a)
1241+unsafeBuildDynamic :: BehaviorM x (PatchTarget p) -> Event x p -> Dyn x p
1074−newJoinDyn d =
1242+unsafeBuildDynamic readV0 v' =
1075− let readV0 = readBehaviorTracked . dynamicCurrent =<< readBehaviorTracked (dynamicCurrent d)
1243+ Dyn $ unsafePerformIO $ newIORef $ UnsafeDyn (readV0, v')
1076− eOuter = push (fmap (Just . Identity) . readBehaviorUntracked . dynamicCurrent . runIdentity) $ dynamicUpdated d
1077− eInner = switch $ dynamicUpdated <$> dynamicCurrent d
1078− eBoth = coincidence $ dynamicUpdated . runIdentity <$> dynamicUpdated d
1079− v' = unSpiderEvent $ R.leftmost $ map SpiderEvent [eBoth, eOuter, eInner]
1080− in unsafeDyn readV0 v'
1082-- ResultM can read behaviors and events
1245-- ResultM can read behaviors and events
1083type ResultM = EventM
1246type ResultM = EventM
1085−{-# NOINLINE unsafeNewIORef #-}
1086−unsafeNewIORef :: a -> b -> IORef b
1087−unsafeNewIORef _ b = unsafePerformIO $ newIORef b
1089instance HasSpiderTimeline x => Functor (Event x) where
1248instance HasSpiderTimeline x => Functor (Event x) where
1090 fmap f = push $ return . Just . f
1249 fmap f = push $ return . Just . f
@@ -1098,33 +1257,42 @@ push f e = cacheEvent (pushCheap f e)
1099{-# INLINABLE pull #-}
1258{-# INLINABLE pull #-}
1100pull :: BehaviorM x a -> Behavior x a
1259pull :: BehaviorM x a -> Behavior x a
1101−pull a = behaviorPull $ Pull
1260+pull a = unsafePerformIO $ do
1102− { pullCompute = a
1261+ ref <- newIORef Nothing
1103− , pullValue = unsafeNewIORef a Nothing
1104#ifdef DEBUG_NODEIDS
1262#ifdef DEBUG_NODEIDS
1105− , pullNodeId = unsafeNodeId a
1263+ nid <- newNodeId
1265+ pure $ behaviorPull $ Pull
1268+#ifdef DEBUG_NODEIDS
1109{-# INLINABLE switch #-}
1273{-# INLINABLE switch #-}
1110switch :: HasSpiderTimeline x => Behavior x (Event x a) -> Event x a
1274switch :: HasSpiderTimeline x => Behavior x (Event x a) -> Event x a
1275+switch a = unsafePerformIO $ do
1276+ ref <- newIORef Nothing
1111−switch a = eventSwitch $ Switch
1277+ pure $ eventSwitch $ Switch
1112− { switchParent = a
1278+ { switchParent = a
1113− , switchSubscribed = unsafeNewIORef a Nothing
1279+ , switchSubscribed = ref
1116coincidence :: HasSpiderTimeline x => Event x (Event x a) -> Event x a
1282coincidence :: HasSpiderTimeline x => Event x (Event x a) -> Event x a
1283+coincidence a = unsafePerformIO $ do
1284+ ref <- newIORef Nothing
1117−coincidence a = eventCoincidence $ Coincidence
1285+ pure $ eventCoincidence $ Coincidence
1118− { coincidenceParent = a
1286+ { coincidenceParent = a
1119− , coincidenceSubscribed = unsafeNewIORef a Nothing
1287+ , coincidenceSubscribed = ref
1122-- 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
1123run :: 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
1124run roots after = do
1292run roots after = do
1125 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"
1126− t <- SpiderHost ask
1294+ let t = spiderTimeline :: SpiderTimelineEnv x
1127− result <- SpiderHost $ lift $ withMVar (_spiderTimeline_lock t) $ \_ -> flip runReaderT t $ unSpiderHost $ runFrame $ do
1295+ result <- SpiderHost $ withMVar (_spiderTimeline_lock (unSTE t)) $ \_ -> unSpiderHost $ runFrame $ do
1128 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
1296 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
1129 occBefore <- liftIO $ do
1297 occBefore <- liftIO $ do
1130 occBefore <- readIORef occRef
1298 occBefore <- readIORef occRef
@@ -1162,9 +1330,11 @@ scheduleMerge' initialHeight heightRef a = scheduleMerge initialHeight $ do
1162 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?)
1165−data SomeClear = forall a. SomeClear (IORef (Maybe a))
1333+newtype Clear a = Clear (IORef (Maybe a))
1167−data SomeRootClear = forall k. SomeRootClear (IORef (DMap k Identity))
1335+newtype IntClear a = IntClear (IORef (IntMap a))
1337+newtype RootClear k = RootClear (IORef (DMap k Identity))
1169data 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
@@ -1176,55 +1346,110 @@ mkWeakPtrWithDebug x debugNote = do
1176 x' <- evaluate x
1346 x' <- evaluate x
1177 mkWeakPtr x' $
1347 mkWeakPtr x' $
1178 if debugFinalize
1348 if debugFinalize
1179− then Just $ putStrLn $ "finalizing: " ++ debugNote
1349+ then Just $ debugStrLn $ "finalizing: " ++ debugNote
1180 else Nothing
1350 else Nothing
1182type WeakList a = [Weak a]
1352type WeakList a = [Weak a]
1184−{-# INLINE withIncreasedDepth #-}
1354+type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
1185#ifdef DEBUG
1359#ifdef DEBUG
1361+debugSubscriber :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> IO (Subscriber x a)
1362+debugSubscriber description = return . debugSubscriber' description
1364+debugSubscriber' :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> Subscriber x a
1365+debugSubscriber' description subscribed = Subscriber
1367+ subscriberPropagate = \m -> do
1368+ tracePropagate (Proxy :: Proxy x) ("subscriberPropagate: " <> description)
1369+ subscriberPropagate subscribed m
1370+ , subscriberInvalidateHeight = \old -> do
1371+ traceInvalidateHeight $ "invalidateSubscriberHeight: " <> description <> ", old = " <> show (unHeight old)
1372+ subscriberInvalidateHeight subscribed old
1373+ traceInvalidateHeight $ "invalidateSubscriberHeight: " <> description <> ", done"
1374+ , subscriberRecalculateHeight = \new -> do
1375+ traceInvalidateHeight $ "subscriberRecalculateHeight: " <> description <> ", new = " <> show (unHeight new)
1376+ subscriberRecalculateHeight subscribed new
1377+ traceInvalidateHeight $ "subscriberRecalculateHeight: " <> description <> ", done"
1186−withIncreasedDepth :: CanTrace x m => m a -> m a
1381+{-# INLINE withIncreasedDepth #-}
1382+withIncreasedDepth :: forall proxy x m a. CanTrace x m => proxy x -> m a -> m a
1187−withIncreasedDepth a = do
1383+withIncreasedDepth _ a = do
1188− spiderTimeline <- askSpiderTimelineEnv
1189− liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) succ
1384+ liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) succ
1190 result <- a
1385 result <- a
1191− liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) pred
1386+ liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) pred
1192 return result
1387 return result
1194−withIncreasedDepth :: m a -> m a
1195−withIncreasedDepth = id
1198−type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
1200{-# INLINE tracePropagate #-}
1389{-# INLINE tracePropagate #-}
1201tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1390tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1202−tracePropagate p = traceWhen p debugPropagate
1391+tracePropagate p = when debugPropagate . trace p
1204{-# INLINE traceInvalidate #-}
1393{-# INLINE traceInvalidate #-}
1205traceInvalidate :: String -> IO ()
1394traceInvalidate :: String -> IO ()
1206−traceInvalidate = when debugInvalidate . liftIO . putStrLn
1395+traceInvalidate = when debugInvalidate . liftIO . debugStrLn
1397+{-# INLINE traceInvalidateHeight #-}
1398+traceInvalidateHeight :: String -> IO ()
1399+traceInvalidateHeight = when debugInvalidateHeight . liftIO . debugStrLn
1208−{-# INLINE traceWhen #-}
1401+{-# INLINE trace #-}
1209−traceWhen :: (CanTrace x m) => proxy x -> Bool -> String -> m ()
1402+trace :: (CanTrace x m) => proxy x -> String -> m ()
1210−traceWhen p b message = traceMWhen p b $ return message
1403+trace p message = traceM p $ return message
1212−{-# INLINE traceMWhen #-}
1405+{-# INLINE traceM #-}
1213−traceMWhen :: (CanTrace x m) => proxy x -> Bool -> m String -> m ()
1406+traceM :: forall x proxy m. (CanTrace x m) => proxy x -> m String -> m ()
1214−traceMWhen _ b getMessage = when b $ do
1407+traceM _ getMessage = do
1215 message <- getMessage
1408 message <- getMessage
1217− spiderTimeline <- askSpiderTimelineEnv
1218− d <- liftIO $ readIORef $ _spiderTimeline_depth spiderTimeline
1409+ d <- liftIO $ readIORef $ _spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1410+ liftIO $ debugStrLn $ replicate d ' ' <> message
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 ()
1222− liftIO $ putStrLn $ replicate d ' ' <> message
1224whoCreatedIORef :: IORef a -> IO [String]
1450whoCreatedIORef :: IORef a -> IO [String]
1225whoCreatedIORef (IORef a) = whoCreated $! a
1451whoCreatedIORef (IORef a) = whoCreated $! a
1228groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
1453groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
1229groupByHead = \case
1454groupByHead = \case
1230 [] -> []
1455 [] -> []
@@ -1235,20 +1460,54 @@ groupByHead = \case
1235 | otherwise -> (x, xs :| []) : l
1460 | otherwise -> (x, xs :| []) : l
1237listsToForest :: Eq a => [[a]] -> Forest a
1462listsToForest :: Eq a => [[a]] -> Forest a
1238−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"
1241{-# INLINE propagateSubscriberHold #-}
1498{-# INLINE propagateSubscriberHold #-}
1242propagateSubscriberHold :: 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 ()
1243propagateSubscriberHold h a = do
1500propagateSubscriberHold h a = do
1244− {-# SCC "trace" #-} traceMWhen (Proxy :: Proxy x) debugPropagate $ liftIO $ do
1501+ {-# SCC "trace" #-} when debugPropagate $ traceM (Proxy :: Proxy x) $ liftIO $ do
1245 invalidators <- liftIO $ readIORef $ holdInvalidators h
1502 invalidators <- liftIO $ readIORef $ holdInvalidators h
1246 return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1503 return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1247 v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1505 v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1248 case {-# SCC "apply" #-} apply a v of
1506 case {-# SCC "apply" #-} apply a v of
1249 Nothing -> return ()
1507 Nothing -> return ()
1250 Just v' -> do
1508 Just v' -> do
1509+ {-# SCC "trace2" #-} withIncreasedDepth (Proxy :: Proxy x) $
1251− {-# SCC "trace2" #-} withIncreasedDepth $ tracePropagate (Proxy :: Proxy x) $ "propagateSubscriberHold: assigning Hold" <> showNodeId h
1510+ tracePropagate (Proxy :: Proxy x) ("propagateSubscriberHold: assigning Hold" <> showNodeId h)
1252 vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1511 vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1253 iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1512 iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1254 defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
1513 defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
@@ -1256,25 +1515,25 @@ propagateSubscriberHold h a = do
1256data 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
1258runBehaviorM :: 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
1259−runBehaviorM a mwi holdInits = runReaderT (unBehaviorM a) (mwi, holdInits)
1518+runBehaviorM a mwi holdInits = runReaderIO (unBehaviorM a) (mwi, holdInits)
1261askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
1520askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
1262askInvalidator = do
1521askInvalidator = do
1263− (!m, _) <- BehaviorM ask
1522+ (!m, _) <- ask
1264 case m of
1523 case m of
1265 Nothing -> return Nothing
1524 Nothing -> return Nothing
1266 Just (!wi, _) -> return $ Just wi
1525 Just (!wi, _) -> return $ Just wi
1268askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
1527askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
1269askParentsRef = do
1528askParentsRef = do
1270− (!m, _) <- BehaviorM ask
1529+ (!m, _) <- ask
1271 case m of
1530 case m of
1272 Nothing -> return Nothing
1531 Nothing -> return Nothing
1273 Just (_, !p) -> return $ Just p
1532 Just (_, !p) -> return $ Just p
1275askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
1534askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
1276askBehaviorHoldInits = do
1535askBehaviorHoldInits = do
1277− (_, !his) <- BehaviorM ask
1536+ (_, !his) <- ask
1278 return his
1537 return his
1280{-# INLINE getDynHold #-}
1539{-# INLINE getDynHold #-}
@@ -1282,30 +1541,27 @@ getDynHold :: (Defer (SomeHoldInit x) m, Patch p) => Dyn x p -> m (Hold x p)
1282getDynHold d = do
1541getDynHold d = do
1283 mh <- liftIO $ readIORef $ unDyn d
1542 mh <- liftIO $ readIORef $ unDyn d
1284 case mh of
1543 case mh of
1285− Right h -> return h
1544+ HoldDyn h -> return h
1286− Left (readV0, v') -> do
1545+ UnsafeDyn (readV0, v') -> do
1287 holdInits <- getDeferralQueue
1546 holdInits <- getDeferralQueue
1288 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1547 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1549+ BuildDyn (readV0, v') -> do
1550+ v0 <- liftIO $ runEventM readV0
1289 h <- hold v0 v'
1554 h <- hold v0 v'
1290− liftIO $ writeIORef (unDyn d) $ Right h
1555+ liftIO $ writeIORef (unDyn d) $ HoldDyn h
1291 return h
1556 return h
1293-- Always refers to 0
1559-- Always refers to 0
1294{-# NOINLINE zeroRef #-}
1560{-# NOINLINE zeroRef #-}
1295zeroRef :: IORef Height
1561zeroRef :: IORef Height
1296zeroRef = unsafePerformIO $ newIORef zeroHeight
1562zeroRef = unsafePerformIO $ newIORef zeroHeight
1298−type CanSubscribe x m =
1299− ( HasSpiderTimeline x
1300− , HasCurrentHeight x m
1301− , Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m -- The things we need to lazily initialize state
1302− , Defer SomeClear m -- Wiping out event firings
1303− , Defer (SomeAssignment x) m -- Updating state
1304− , Defer (SomeResetCoincidence x) m
1308−getRootSubscribed :: GCompare k => k a -> Root x k -> Subscriber x a -> IO (WeakBagTicket, RootSubscribed x a, Maybe a)
1564+getRootSubscribed :: forall k x a. (GCompare k, HasSpiderTimeline x) => k a -> Root x k -> Subscriber x a -> IO (WeakBagTicket, RootSubscribed x a, Maybe a)
1309getRootSubscribed k r sub = do
1565getRootSubscribed k r sub = do
1310 mSubscribed <- readIORef $ rootSubscribed r
1566 mSubscribed <- readIORef $ rootSubscribed r
1311 let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
1567 let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
@@ -1319,10 +1575,15 @@ getRootSubscribed k r sub = do
1319 let !cached = rootSubscribed r
1575 let !cached = rootSubscribed r
1320 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1576 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1321 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1577 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1322− when debugPropagate $ putStrLn $ "getRootSubscribed: calling rootInit"
1579+ tracePropagate (Proxy::Proxy x) $ "getRootSubscribed: calling rootInit"
1323 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1581 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1324 writeIORef uninitRef $! uninit
1582 writeIORef uninitRef $! uninit
1583+#ifdef DEBUG_NODEIDS
1325− let subscribed = RootSubscribed
1586+ let !subscribed = RootSubscribed
1326 { rootSubscribedKey = k
1587 { rootSubscribedKey = k
1327 , rootSubscribedCachedSubscribed = cached
1588 , rootSubscribedCachedSubscribed = cached
1328 , rootSubscribedOccurrence = getOcc
1589 , rootSubscribedOccurrence = getOcc
@@ -1330,17 +1591,29 @@ getRootSubscribed k r sub = do
1330 , rootSubscribedUninit = uninit
1591 , rootSubscribedUninit = uninit
1331 , rootSubscribedWeakSelf = weakSelf
1592 , rootSubscribedWeakSelf = weakSelf
1332#ifdef DEBUG_NODEIDS
1593#ifdef DEBUG_NODEIDS
1333− , rootSubscribedNodeId = unsafeNodeId (k, r, subs)
1594+ , rootSubscribedNodeId = nid
1597+ -- If we die at the same moment that all our children die, they will
1598+ -- try to clean us up but will fail because their Weak reference to us
1599+ -- will also be dead. So, if we are dying, check if there are any
1600+ -- children; since children don't bother cleaning themselves up if
1601+ -- their parents are already dead, I don't think there's a race
1602+ -- condition here. However, if there are any children, then we can
1603+ -- infer that we need to clean ourselves up, so we do.
1605+ cs <- readIORef $ _weakBag_children subs
1606+ when (not $ IntMap.null cs) (cleanupRootSubscribed subscribed)
1336− writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "RootSubscribed"
1607+ writeIORef weakSelf =<< evaluate =<< mkWeakPtr subscribed (Just finalCleanup)
1337 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
1338 occ <- getOcc
1609 occ <- getOcc
1339 return (sln, subscribed, occ)
1610 return (sln, subscribed, occ)
1612+#ifdef USE_TEMPLATE_HASKELL
1341{-# ANN cleanupRootSubscribed "HLint: ignore Redundant bracket" #-}
1613{-# ANN cleanupRootSubscribed "HLint: ignore Redundant bracket" #-}
1342cleanupRootSubscribed :: RootSubscribed x a -> IO ()
1615cleanupRootSubscribed :: RootSubscribed x a -> IO ()
1343−cleanupRootSubscribed self@(RootSubscribed { rootSubscribedKey = k, rootSubscribedCachedSubscribed = cached }) = do
1616+cleanupRootSubscribed self@RootSubscribed { rootSubscribedKey = k, rootSubscribedCachedSubscribed = cached } = do
1344 rootSubscribedUninit self
1617 rootSubscribedUninit self
1345 modifyIORef' cached $ DMap.delete k
1618 modifyIORef' cached $ DMap.delete k
@@ -1348,8 +1621,90 @@ cleanupRootSubscribed self@(RootSubscribed { rootSubscribedKey = k, rootSubscrib
1348subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1621subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1349subscribeRootSubscribed 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
1351{-# INLINABLE getFanSubscribed #-}
1706{-# INLINABLE getFanSubscribed #-}
1352−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))
1353getFanSubscribed k f sub = do
1708getFanSubscribed k f sub = do
1354 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1709 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1355 case mSubscribed of
1710 case mSubscribed of
@@ -1367,13 +1722,16 @@ getFanSubscribed k f sub = do
1367 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1722 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1368 occRef <- liftIO $ newIORef parentOcc
1723 occRef <- liftIO $ newIORef parentOcc
1369 when (isJust parentOcc) $ scheduleClear occRef
1724 when (isJust parentOcc) $ scheduleClear occRef
1725+#ifdef DEBUG_NODEIDS
1726+ nid <- liftIO newNodeId
1370 let subscribed = FanSubscribed
1728 let subscribed = FanSubscribed
1371 { fanSubscribedCachedSubscribed = fanSubscribed f
1729 { fanSubscribedCachedSubscribed = fanSubscribed f
1372 , fanSubscribedOccurrence = occRef
1730 , fanSubscribedOccurrence = occRef
1373 , fanSubscribedParent = subscription
1731 , fanSubscribedParent = subscription
1374 , fanSubscribedSubscribers = subscribersRef
1732 , fanSubscribedSubscribers = subscribersRef
1375#ifdef DEBUG_NODEIDS
1733#ifdef DEBUG_NODEIDS
1376− , fanSubscribedNodeId = unsafeNodeId f
1734+ , fanSubscribedNodeId = nid
1379 let !self = (k, subscribed)
1737 let !self = (k, subscribed)
@@ -1383,7 +1741,7 @@ getFanSubscribed k f sub = do
1383 liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
1741 liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
1384 return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
1742 return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
1386−cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k) -> IO ()
1744+cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k v) -> IO ()
1387cleanupFanSubscribed (k, subscribed) = do
1745cleanupFanSubscribed (k, subscribed) = do
1388 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1746 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1389 let reducedSubscribers = DMap.delete k subscribers
1747 let reducedSubscribers = DMap.delete k subscribers
@@ -1395,7 +1753,7 @@ cleanupFanSubscribed (k, subscribed) = do
1395 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1753 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1397{-# INLINE subscribeFanSubscribed #-}
1755{-# INLINE subscribeFanSubscribed #-}
1398−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
1399subscribeFanSubscribed k subscribed sub = do
1757subscribeFanSubscribed k subscribed sub = do
1400 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1758 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1401 case DMap.lookup k subscribers of
1759 case DMap.lookup k subscribers of
@@ -1408,7 +1766,7 @@ subscribeFanSubscribed k subscribed sub = do
1408 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
1410{-# INLINABLE getSwitchSubscribed #-}
1768{-# INLINABLE getSwitchSubscribed #-}
1411−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)
1412getSwitchSubscribed s sub = do
1770getSwitchSubscribed s sub = do
1413 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1771 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1414 case mSubscribed of
1772 case mSubscribed of
@@ -1433,6 +1791,9 @@ getSwitchSubscribed s sub = do
1433 when (isJust parentOcc) $ scheduleClear occRef
1791 when (isJust parentOcc) $ scheduleClear occRef
1434 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1792 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1435 (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
1436 let !subscribed = SwitchSubscribed
1797 let !subscribed = SwitchSubscribed
1437 { switchSubscribedCachedSubscribed = switchSubscribed s
1798 { switchSubscribedCachedSubscribed = switchSubscribed s
1438 , switchSubscribedOccurrence = occRef
1799 , switchSubscribedOccurrence = occRef
@@ -1445,7 +1806,7 @@ getSwitchSubscribed s sub = do
1445 , switchSubscribedCurrentParent = subscriptionRef
1806 , switchSubscribedCurrentParent = subscriptionRef
1446 , switchSubscribedWeakSelf = weakSelf
1807 , switchSubscribedWeakSelf = weakSelf
1447#ifdef DEBUG_NODEIDS
1808#ifdef DEBUG_NODEIDS
1448− , switchSubscribedNodeId = unsafeNodeId s
1809+ , switchSubscribedNodeId = nid
1451 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
1812 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
@@ -1464,7 +1825,7 @@ subscribeSwitchSubscribed :: SwitchSubscribed x a -> Subscriber x a -> IO WeakBa
1464subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1825subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1466{-# INLINABLE getCoincidenceSubscribed #-}
1827{-# INLINABLE getCoincidenceSubscribed #-}
1467−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)
1468getCoincidenceSubscribed c sub = do
1829getCoincidenceSubscribed c sub = do
1469 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1830 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1470 case mSubscribed of
1831 case mSubscribed of
@@ -1490,6 +1851,9 @@ getCoincidenceSubscribed c sub = do
1490 scheduleClear innerSubdRef
1851 scheduleClear innerSubdRef
1491 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1852 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1492 (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
1493 let subscribed = CoincidenceSubscribed
1857 let subscribed = CoincidenceSubscribed
1494 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1858 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1495 , coincidenceSubscribedOccurrence = occRef
1859 , coincidenceSubscribedOccurrence = occRef
@@ -1500,7 +1864,7 @@ getCoincidenceSubscribed c sub = do
1500 , coincidenceSubscribedInnerParent = innerSubdRef
1864 , coincidenceSubscribedInnerParent = innerSubdRef
1501 , coincidenceSubscribedWeakSelf = weakSelf
1865 , coincidenceSubscribedWeakSelf = weakSelf
1502#ifdef DEBUG_NODEIDS
1866#ifdef DEBUG_NODEIDS
1503− , coincidenceSubscribedNodeId = unsafeNodeId c
1867+ , coincidenceSubscribedNodeId = nid
1506 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
1870 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
@@ -1517,83 +1881,260 @@ cleanupCoincidenceSubscribed subscribed = do
1517subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1881subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1518subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1882subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1520−{-# INLINE merge #-}
1884+{-# INLINE mergeG #-}
1521−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)
1886+ => (forall a. q a -> Event x (v a))
1887+ -> DynamicS x (PatchDMap k q) -> Event x (DMap k v)
1522−merge d = cacheEvent (mergeCheap d)
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)
1524{-# INLINE [1] mergeCheap #-}
1896{-# INLINE [1] mergeCheap #-}
1525−mergeCheap :: forall k x. (HasSpiderTimeline x, GCompare k) => Dynamic x (PatchDMap k (Event x)) -> Event x (DMap k Identity)
1898+ :: forall k x q v. (HasSpiderTimeline x, GCompare k)
1526−mergeCheap d = Event $ \sub -> do
1899+ => (forall a. q a -> Event x (v a))
1527− initialParents <- readBehaviorUntracked $ dynamicCurrent d
1900+ -> DynamicS x (PatchDMap k q)
1528− accumRef <- liftIO $ newIORef $ error "merge: accumRef not yet initialized"
1901+ -> Event x (DMap k v)
1529− heightRef <- liftIO $ newIORef $ error "merge: heightRef not yet initialized"
1902+mergeCheap nt = mergeGCheap' unMergeSubscribedParent getInitialSubscribers updateMe destroy
1530− heightBagRef <- liftIO $ newIORef $ error "merge: heightBagRef not yet initialized"
1903+ where
1531− parentsRef <- liftIO $ newIORef $ error "merge: parentsRef not yet initialized"
1904+ updateMe :: MergeUpdateFunc k v x (PatchDMap k q) (MergeSubscribedParent x)
1532− let scheduleSelf height = scheduleMerge' height heightRef $ do
1905+ updateMe subscriber heightBagRef oldParents (PatchDMap p) = do
1533− m <- liftIO $ readIORef accumRef
1906+ let f (subscriptionsToKill, ps) (k :=> ComposeMaybe me) = do
1534− liftIO $ writeIORef accumRef $! DMap.empty
1907+ (mOldSubd, newPs) <- case me of
1535− --TODO: Assert that m is not empty
1908+ Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
1536− subscriberPropagate sub m
1909+ Just e -> do
1537− invalidateMyHeight = do
1910+ let s = subscriber $ return k
1538− oldHeight <- readIORef heightRef
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
1539− 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
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
1540− writeIORef heightRef $! invalidHeight
2025+ writeIORef heightRef $! invalidHeight
1541− subscriberInvalidateHeight sub oldHeight
2026+ subscriberInvalidateHeight sub oldHeight
1542− revalidateMyHeight = do
2027+
2028+revalidateMergeHeight :: Merge x k v s -> IO ()
2029+revalidateMergeHeight m = do
1543− currentHeight <- readIORef heightRef
2030+ currentHeight <- readIORef $ _merge_heightRef m
1544− when (currentHeight == invalidHeight) $ do -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
2032+ -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
2033+ when (currentHeight == invalidHeight) $ do
1545− heights <- readIORef heightBagRef
2034+ heights <- readIORef $ _merge_heightBagRef m
1546− parents <- readIORef parentsRef
2035+ parents <- readIORef $ _merge_parentsRef m
1547− -- When the number of heights in the bag reaches the number of parents, we should have a valid height
2036+ -- When the number of heights in the bag reaches the number of parents, we should have a valid height
1548− case heightBagSize heights `compare` DMap.size parents of
2037+ case heightBagSize heights `compare` DMap.size parents of
1549− LT -> return ()
2038+ LT -> return ()
1550− EQ -> do
2039+ EQ -> do
1551− let height = succHeight $ heightBagMax heights
2040+ let height = succHeight $ heightBagMax heights
1552− when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: height: " <> show height
2041+ traceInvalidateHeight $ "recalculateSubscriberHeight: height: " <> show height
1553− writeIORef heightRef $! height
2042+ writeIORef (_merge_heightRef m) $! height
1554− subscriberRecalculateHeight sub height
2043+ subscriberRecalculateHeight (_merge_sub m) height
1555− GT -> error $ "revalidateMergeHeight: more heights than parents for Merge"
2044+ GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show (DMap.size parents) <> ") for Merge"
1556− subscriber :: forall a. k a -> Subscriber x a
2045+
1557− subscriber k = Subscriber
2046+scheduleMergeSelf :: HasSpiderTimeline x => Merge x k v s -> Height -> EventM x ()
1558− { subscriberPropagate = \a -> do
2047+scheduleMergeSelf m height = scheduleMerge' height (_merge_heightRef m) $ do
1559− oldM <- liftIO $ readIORef accumRef
2048+ vals <- liftIO $ readIORef $ _merge_accumRef m
1560− let newM = DMap.insertWith (error $ "Same key fired multiple times for Merge") k (Identity a) oldM
2049+ -- Once we're done with this, we can clear it immediately, because if there's a cacheEvent in front of us,
1561− tracePropagate (Proxy :: Proxy x) $ " DMap.size oldM = " <> show (DMap.size oldM) <> "; DMap.size newM = " <> show (DMap.size newM)
2050+ -- it'll handle subsequent subscribers, and if not, we won't get subsequent subscribers
1562− liftIO $ writeIORef accumRef $! newM
2051+ liftIO $ writeIORef (_merge_accumRef m) $! DMap.empty
1563− when (DMap.null oldM) $ do -- Only schedule the firing once
2052+ --TODO: Assert that m is not empty
1564− height <- liftIO $ readIORef heightRef
2053+ subscriberPropagate (_merge_sub m) vals
1565− --TODO: assertions about height
2054+
2055+checkCycle :: HasSpiderTimeline x => EventSubscribed x -> EventM x ()
2056+checkCycle subscribed = liftIO $ do
2057+ height <- readIORef (eventSubscribedHeightRef subscribed)
1566− currentHeight <- getCurrentHeight
2059+ -- currentHeight <- getCurrentHeight
1567− when (height <= currentHeight) $ do
2060+ -- when (height <= currentHeight) $ if height /= invalidHeight
1568− if height /= invalidHeight
1569− then do
2061+ -- then do
1570− myStack <- liftIO $ whoCreatedIORef undefined --TODO
2062+ -- myStack <- liftIO $ whoCreatedIORef undefined --TODO
1571− error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
2063+ -- error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
1572− else liftIO $ do
2064+ -- else liftIO $
2065+ when (height == invalidHeight) $
1573−#ifdef DEBUG_CYCLES
2066+#ifdef DEBUG_CYCLES
1574− nodesInvolvedInCycle <- walkInvalidHeightParents $ eventSubscribedMerge subscribed
2068+ nodesInvolvedInCycle <- walkInvalidHeightParents subscribed
1575− stacks <- forM nodesInvolvedInCycle $ \(Some.This es) -> whoCreatedEventSubscribed es
2069+ stacks <- forM nodesInvolvedInCycle whoCreatedEventSubscribed
1576− let cycleInfo = ":\n" <> drawForest (listsToForest stacks)
2070+ throwIO (EventLoopException stacks)
1578− let cycleInfo = ""
2072+ throwIO EventLoopException
1580− error $ "Causality loop found" <> cycleInfo
2074+
1581− scheduleSelf height
2075+
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
1582− , subscriberInvalidateHeight = \old -> do --TODO: When removing a parent doesn't actually change the height, maybe we can avoid invalidating
2089+ , subscriberInvalidateHeight = \old -> do --TODO: When removing a parent doesn't actually change the height, maybe we can avoid invalidating
1583− modifyIORef' heightBagRef $ heightBagRemove old
2090+ modifyIORef' (_merge_heightBagRef m) $ heightBagRemove old
1584− invalidateMyHeight
2091+ invalidateMergeHeight m
1585− , subscriberRecalculateHeight = \new -> do
2092+ , subscriberRecalculateHeight = \new -> do
1586− modifyIORef' heightBagRef $ heightBagAdd new
2093+ modifyIORef' (_merge_heightBagRef m) $ heightBagAdd new
1587− revalidateMyHeight
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
2110+ initialParents <- readBehaviorUntracked $ dynamicCurrent d
2111+ accumRef <- liftIO $ newIORef $ error "merge: accumRef not yet initialized"
2112+ heightRef <- liftIO $ newIORef $ error "merge: heightRef not yet initialized"
2113+ heightBagRef <- liftIO $ newIORef $ error "merge: heightBagRef not yet initialized"
2114+ parentsRef :: IORef (DMap k s) <- liftIO $ newIORef $ error "merge: parentsRef not yet initialized"
2115+ changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2117+ let subscribed = EventSubscribed
2118+ { eventSubscribedHeightRef = heightRef
2119+ , eventSubscribedRetained = toAny (parentsRef, changeSubdRef)
2121+ , eventSubscribedGetParents = do
2122+ let getParent' (_ :=> v) = _eventSubscription_subscribed (getParent v)
2123+ fmap getParent' . DMap.toList <$> readIORef parentsRef
2124+ , eventSubscribedHasOwnHeightRef = False
2125+ , eventSubscribedWhoCreated = whoCreatedIORef heightRef
2130+ { _merge_parentsRef = parentsRef
2131+ , _merge_heightBagRef = heightBagRef
2132+ , _merge_heightRef = heightRef
2134+ , _merge_accumRef = accumRef
1589− 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
1590− let s = subscriber k
1591− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead e s
1592− height <- liftIO $ getEventSubscribedHeight parentSubd
1593− return $ (fmap (\x -> k :=> Identity x) parentOcc, height, k :=> MergeSubscribedParent subscription)
1594− let dm = DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
1595− heights = fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1596− myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
2137+ let myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
1597 myHeight = if invalidHeight `elem` heights
2138 myHeight = if invalidHeight `elem` heights
1598 then invalidHeight
2139 then invalidHeight
1599 else succHeight $ heightBagMax myHeightBag
2140 else succHeight $ heightBagMax myHeightBag
@@ -1601,132 +2142,236 @@ mergeCheap d = Event $ \sub -> do
1601 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
1602 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)
1603 else (Nothing, dm)
2144 else (Nothing, dm)
1604− unless (DMap.null accum) $ do
2145+ unless (DMap.null accum) $ scheduleMergeSelf m myHeight
1605− scheduleSelf myHeight
1606− occRef <- liftIO $ newIORef occ
1607− when (isJust occ) $ scheduleClear occRef
1608 liftIO $ writeIORef accumRef $! accum
2146 liftIO $ writeIORef accumRef $! accum
1609 liftIO $ writeIORef heightRef $! myHeight
2147 liftIO $ writeIORef heightRef $! myHeight
1610 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
1611 changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2180 changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
1612− liftIO $ writeIORef parentsRef $! DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
2181+ let subscribed = EventSubscribed
1613− let updateMe (PatchDMap p) = do
2182+ { eventSubscribedHeightRef = heightRef
2183+ , eventSubscribedRetained = toAny (parents, changeSubdRef)
2185+ , eventSubscribedGetParents = fmap (_eventSubscription_subscribed . snd) <$> FastMutableIntMap.toList parents
2186+ , eventSubscribedHasOwnHeightRef = False
2187+ , eventSubscribedWhoCreated = whoCreatedIORef heightRef
2190+ let scheduleSelf = do
1614− oldParents <- liftIO $ readIORef parentsRef
2191+ height <- liftIO $ readIORef $ heightRef
1615− let f (subscriptionsToKill, ps) (k :=> ComposeMaybe me) = do
2192+ scheduleMerge' height heightRef $ do
1616− (mOldSubd, newPs) <- case me of
2193+ vals <- liftIO $ FastMutableIntMap.getFrozenAndClear accum
1617− Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
2194+ subscriberPropagate sub vals
1618− Just e -> do
2195+ invalidateMyHeight = invalidateMergeHeight' heightRef sub
1619− let s = subscriber k
2196+ recalculateMyHeight = do
2197+ currentHeight <- readIORef heightRef
2198+ when (currentHeight == invalidHeight) $ do --TODO: This will almost always be true; can we get rid of this check and just proceed to the next one always?
2199+ heights <- readIORef heightBagRef
2200+ numParents <- FastMutableIntMap.size parents
2201+ case heightBagSize heights `compare` numParents of
2204+ let height = succHeight $ heightBagMax heights
2205+ traceInvalidateHeight $ "recalculateSubscriberHeight: height: " <> show height
2206+ writeIORef heightRef $! height
2207+ subscriberRecalculateHeight sub height
2208+ GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show numParents <> ") for Merge"
2209+ mySubscriber k = Subscriber
2210+ { subscriberPropagate = \a -> do
2211+ checkCycle subscribed
2213+ wasEmpty <- liftIO $ FastMutableIntMap.isEmpty accum
2214+ liftIO $ FastMutableIntMap.insert accum k a
2215+ when wasEmpty scheduleSelf
2216+ , subscriberInvalidateHeight = \old -> do
2217+ modifyIORef' heightBagRef $ heightBagRemove old
2219+ , subscriberRecalculateHeight = \new -> do
2220+ modifyIORef' heightBagRef $ heightBagAdd new
2221+ recalculateMyHeight
2223+ forM_ (IntMap.toList initialParents) $ \(k, p) -> do
1620− subscription@(EventSubscription _ subd) <- subscribe e s
2224+ (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead p $ mySubscriber k
2226+ forM_ parentOcc $ FastMutableIntMap.insert accum k
2227+ FastMutableIntMap.insert parents k subscription
1621− newParentHeight <- liftIO $ getEventSubscribedHeight subd
2228+ height <- getEventSubscribedHeight parentSubd
1622− let newParent = MergeSubscribedParent subscription
2229+ if height == invalidHeight
2230+ then writeIORef heightRef invalidHeight
1623− liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
2232+ modifyIORef' heightBagRef $ heightBagAdd height
1624− return $ DMap.insertLookupWithKey' (\_ new _ -> new) k newParent ps
2233+ modifyIORef' heightRef $ \oldHeight ->
1625− forM_ mOldSubd $ \oldSubd -> do
2234+ if oldHeight == invalidHeight
1626− oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $ unMergeSubscribedParent oldSubd
2235+ then invalidHeight
1627− liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
2236+ else max (succHeight height) oldHeight
1628− return (maybeToList (unMergeSubscribedParent <$> mOldSubd) ++ subscriptionsToKill, newPs)
2237+ myHeight <- liftIO $ readIORef heightRef
1629− (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
2238+ currentHeight <- getCurrentHeight
1630− liftIO $ writeIORef parentsRef $! newParents
2239+ isEmpty <- liftIO $ FastMutableIntMap.isEmpty accum
1631− return subscriptionsToKill
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
1632 defer $ SomeMergeInit $ do
2246 defer $ SomeMergeInit $ do
2247+ let updateMe a = SomeMergeUpdate u invalidateMyHeight recalculateMyHeight
2250+ let f k newParent = do
2251+ subscription@(EventSubscription _ subd) <- subscribe newParent $ mySubscriber k
2252+ newParentHeight <- liftIO $ getEventSubscribedHeight subd
2253+ liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
2254+ return subscription
2255+ newSubscriptions <- FastMutableIntMap.traverseIntMapPatchWithKey f a
2256+ oldParents <- liftIO $ FastMutableIntMap.applyPatch parents newSubscriptions
2257+ liftIO $ for_ oldParents $ \oldParent -> do
2258+ oldParentHeight <- getEventSubscribedHeight $ _eventSubscription_subscribed oldParent
2260+ print ("updateMe", oldParentHeight)
2261+ modifyIORef' heightBagRef $ heightBagRemove oldParentHeight
2262+ return $ IntMap.elems oldParents
1633− let s = Subscriber
2263+ let changeSubscriber = Subscriber
1634 { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2264 { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
1635− tracePropagate (Proxy :: Proxy x) $ "SubscriberMerge/Change"
2265+ tracePropagate (Proxy :: Proxy x) $ "SubscriberMergeInt/Change"
1636− defer $ SomeMergeUpdate (updateMe a) invalidateMyHeight revalidateMyHeight
2266+ defer $ updateMe a
1637 , subscriberInvalidateHeight = \_ -> return ()
2267 , subscriberInvalidateHeight = \_ -> return ()
1638 , subscriberRecalculateHeight = \_ -> return ()
2268 , subscriberRecalculateHeight = \_ -> return ()
1640− (EventSubscription _ changeSubd, change) <- subscribeAndRead (dynamicUpdated d) s
2270+ (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
1641− forM_ change $ \c -> defer $ SomeMergeUpdate (updateMe c) invalidateMyHeight revalidateMyHeight
2271+ forM_ change $ \c -> defer $ updateMe c
2272+ -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
2273+ -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
2274+ -- its subscription.
1642− liftIO $ writeIORef changeSubdRef (s, changeSubd)
2275+ liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
1643− let unsubscribeAll = do
2276+ let unsubscribeAll = traverse_ unsubscribe =<< FastMutableIntMap.getFrozenAndClear parents
1644− parents <- readIORef parentsRef
2277+
1645− forM_ (DMap.toList parents) $ \(_ :=> MergeSubscribedParent s) -> unsubscribe s
2278+
1646− return ( EventSubscription unsubscribeAll $ EventSubscribed heightRef $ toAny (parentsRef, changeSubdRef)
2279+ return (EventSubscription unsubscribeAll subscribed, occ)
1650newtype 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) }
1652−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
1653−fan e =
2285+fanG e = unsafePerformIO $ do
2286+ ref <- newIORef Nothing
1654 let f = Fan
2287 let f = Fan
1655 { fanParent = e
2288 { fanParent = e
1656− , fanSubscribed = unsafeNewIORef e Nothing
2289+ , fanSubscribed = ref
1658− in EventSelector $ \k -> eventFan k f
2291+ pure $ EventSelectorG $ \k -> eventFan k f
1660−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 ()
1661−runHoldInits holdInitRef mergeInitRef = do
2294+runHoldInits holdInitRef dynInitRef mergeInitRef = do
1662 holdInits <- liftIO $ readIORef holdInitRef
2295 holdInits <- liftIO $ readIORef holdInitRef
2296+ dynInits <- liftIO $ readIORef dynInitRef
1663 mergeInits <- liftIO $ readIORef mergeInitRef
2297 mergeInits <- liftIO $ readIORef mergeInitRef
1664− unless (null holdInits && null mergeInits) $ do
2298+ unless (null holdInits && null dynInits && null mergeInits) $ do
1665 liftIO $ writeIORef holdInitRef []
2299 liftIO $ writeIORef holdInitRef []
2300+ liftIO $ writeIORef dynInitRef []
1666 liftIO $ writeIORef mergeInitRef []
2301 liftIO $ writeIORef mergeInitRef []
1667 mapM_ initHold holdInits
2302 mapM_ initHold holdInits
2303+ mapM_ initDyn dynInits
1668 mapM_ unSomeMergeInit mergeInits
2304 mapM_ unSomeMergeInit mergeInits
1669− runHoldInits holdInitRef mergeInitRef
2305+ runHoldInits holdInitRef dynInitRef mergeInitRef
1671initHold :: HasSpiderTimeline x => SomeHoldInit x -> EventM x ()
2307initHold :: HasSpiderTimeline x => SomeHoldInit x -> EventM x ()
1672initHold (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
1674newEventEnv :: IO (EventEnv x)
2313newEventEnv :: IO (EventEnv x)
1675newEventEnv = do
2314newEventEnv = do
1676 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
1677 holdInitRef <- newIORef []
2316 holdInitRef <- newIORef []
2317+ dynInitRef <- newIORef []
1678 mergeUpdateRef <- newIORef []
2318 mergeUpdateRef <- newIORef []
1679 mergeInitRef <- newIORef []
2319 mergeInitRef <- newIORef []
1680 heightRef <- newIORef zeroHeight
2320 heightRef <- newIORef zeroHeight
1681 toClearRef <- newIORef []
2321 toClearRef <- newIORef []
2322+ toClearIntRef <- newIORef []
1682 toClearRootRef <- newIORef []
2323 toClearRootRef <- newIORef []
1683 coincidenceInfosRef <- newIORef []
2324 coincidenceInfosRef <- newIORef []
1684 delayedRef <- newIORef IntMap.empty
2325 delayedRef <- newIORef IntMap.empty
1685− 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
1687clearEventEnv :: EventEnv x -> IO ()
2328clearEventEnv :: EventEnv x -> IO ()
1688−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
1689 writeIORef toAssignRef []
2330 writeIORef toAssignRef []
1690 writeIORef holdInitRef []
2331 writeIORef holdInitRef []
2332+ writeIORef dynInitRef []
1691 writeIORef mergeUpdateRef []
2333 writeIORef mergeUpdateRef []
1692 writeIORef mergeInitRef []
2334 writeIORef mergeInitRef []
1693 writeIORef heightRef zeroHeight
2335 writeIORef heightRef zeroHeight
1694 writeIORef toClearRef []
2336 writeIORef toClearRef []
2337+ writeIORef toClearIntRef []
1695 writeIORef toClearRootRef []
2338 writeIORef toClearRootRef []
1696 writeIORef coincidenceInfosRef []
2339 writeIORef coincidenceInfosRef []
1697 writeIORef delayedRef IntMap.empty
2340 writeIORef delayedRef IntMap.empty
1699-- | Run an event action outside of a frame
2342-- | Run an event action outside of a frame
1700runFrame :: 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
1701−runFrame a = SpiderHost $ ask >>= \_ -> lift $ do
2344+runFrame a = SpiderHost $ do
1702− let env = _spiderTimeline_eventEnv (spiderTimeline :: SpiderTimelineEnv x)
2345+ let env = _spiderTimeline_eventEnv $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1703 let go = do
2346 let go = do
1704 result <- a
2347 result <- a
1705− 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
1706 return result
2349 return result
1707 result <- runEventM go
2350 result <- runEventM go
1708 toClear <- readIORef $ eventEnvClears env
2351 toClear <- readIORef $ eventEnvClears env
1709− 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
1710 toClearRoot <- readIORef $ eventEnvRootClears env
2355 toClearRoot <- readIORef $ eventEnvRootClears env
1711− forM_ toClearRoot $ \(SomeRootClear ref) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
2356+ forM_ toClearRoot $ \(Some (RootClear ref)) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
1712 toAssign <- readIORef $ eventEnvAssignments env
2357 toAssign <- readIORef $ eventEnvAssignments env
1713 toReconnectRef <- newIORef []
2358 toReconnectRef <- newIORef []
1714 coincidenceInfos <- readIORef $ eventEnvResetCoincidences env
2359 coincidenceInfos <- readIORef $ eventEnvResetCoincidences env
1715 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
2360 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
1716 writeIORef vRef v
2361 writeIORef vRef v
1717− when debugInvalidate $ putStrLn $ "Invalidating Hold"
2362+ traceInvalidate $ "Invalidating Hold"
1718 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
2363 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
1719 mergeUpdates <- readIORef $ eventEnvMergeUpdates env
2364 mergeUpdates <- readIORef $ eventEnvMergeUpdates env
1720 writeIORef (eventEnvMergeUpdates env) []
2365 writeIORef (eventEnvMergeUpdates env) []
1721− when debugPropagate $ putStrLn "Updating merges"
2366+ tracePropagate (Proxy::Proxy x) $ "Updating merges"
1722 mergeSubscriptionsToKill <- runEventM $ concat <$> mapM _someMergeUpdate_update mergeUpdates
2367 mergeSubscriptionsToKill <- runEventM $ concat <$> mapM _someMergeUpdate_update mergeUpdates
1723− when debugPropagate $ putStrLn "Updating merges done"
2368+ tracePropagate (Proxy::Proxy x) $ "Updating merges done"
1724 toReconnect <- readIORef toReconnectRef
2369 toReconnect <- readIORef toReconnectRef
1725 clearEventEnv env
2370 clearEventEnv env
1726 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
2371 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
1727 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
2372 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
1728 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
2373 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
1729− when debugInvalidate $ putStrLn $ "Finalizing invalidator for Switch" <> showNodeId subscribed
2374+ traceInvalidate $ "Finalizing invalidator for Switch" <> showNodeId subscribed
1730 finalize wi
2375 finalize wi
1731 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
2376 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
1732 wi' <- mkWeakPtrWithDebug i "wi'"
2377 wi' <- mkWeakPtrWithDebug i "wi'"
@@ -1734,13 +2379,13 @@ runFrame a = SpiderHost $ ask >>= \_ -> lift $ do
1734 writeIORef (switchSubscribedBehaviorParents subscribed) []
2379 writeIORef (switchSubscribedBehaviorParents subscribed) []
1735 writeIORef (eventEnvHoldInits env) [] --TODO: Should we reuse this?
2380 writeIORef (eventEnvHoldInits env) [] --TODO: Should we reuse this?
1736 e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) $ eventEnvHoldInits env
2381 e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) $ eventEnvHoldInits env
1737− 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
1738 --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
1739 sub <- newSubscriberSwitch subscribed
2384 sub <- newSubscriberSwitch subscribed
1740− 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
1742 stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
2387 stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
1743− liftIO $ putStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
2388+ liftIO $ debugStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
1744 EventRoot _ -> "EventRoot"
2389 EventRoot _ -> "EventRoot"
1745 EventNever -> "EventNever"
2390 EventNever -> "EventNever"
1746 _ -> "something else"
2391 _ -> "something else"
@@ -1755,7 +2400,7 @@ runFrame a = SpiderHost $ ask >>= \_ -> lift $ do
1755 myHeight <- readIORef $ switchSubscribedHeight subscribed
2400 myHeight <- readIORef $ switchSubscribedHeight subscribed
1756 when (parentHeight /= myHeight) $ do
2401 when (parentHeight /= myHeight) $ do
1757 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
2402 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
1758− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
2403+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
1759 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
1760 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
2405 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
1761 unsubscribe subscription
2406 unsubscribe subscription
@@ -1796,7 +2441,7 @@ invalidateCoincidenceHeight subscribed = do
1796 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
2441 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
1797 when (oldHeight /= invalidHeight) $ do
2442 when (oldHeight /= invalidHeight) $ do
1798 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
2443 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
1799− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
2444+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1801updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
2446updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
1802updateSwitchHeight new subscribed = do
2447updateSwitchHeight new subscribed = do
@@ -1804,7 +2449,7 @@ updateSwitchHeight new subscribed = do
1804 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
1805 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
1806 writeIORef (switchSubscribedHeight subscribed) $! new
2451 writeIORef (switchSubscribedHeight subscribed) $! new
1807− WeakBag.traverse (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
2452+ WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
1809recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
2454recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
1810recalculateCoincidenceHeight subscribed = do
2455recalculateCoincidenceHeight subscribed = do
@@ -1813,7 +2458,7 @@ recalculateCoincidenceHeight subscribed = do
1813 height <- calculateCoincidenceHeight subscribed
2458 height <- calculateCoincidenceHeight subscribed
1814 when (height /= invalidHeight) $ do
2459 when (height /= invalidHeight) $ do
1815 writeIORef (coincidenceSubscribedHeight subscribed) $! height
2460 writeIORef (coincidenceSubscribedHeight subscribed) $! height
1816− WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
2461+ WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
1818calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
2463calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
1819calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
2464calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
@@ -1852,15 +2497,218 @@ invalidate toReconnectRef wis = do
1852-- Reflex integration
2497-- Reflex integration
1853--------------------------------------------------------------------------------
2498--------------------------------------------------------------------------------
2500+-- | Designates the default, global Spider timeline
2501+data SpiderTimeline x
2502+type role SpiderTimeline nominal
1855-- | The default, global Spider environment
2504-- | The default, global Spider environment
1856type Spider = SpiderTimeline Global
2505type Spider = SpiderTimeline Global
1858−#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2507+instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (EventM x) where
1859−-- When we're specializing, we include this from Reflex.Class instead, because
2508+ {-# INLINABLE sample #-}
1860−-- it needs access to these types; when we're not, we want them here, so our
2509+ sample (SpiderBehavior b) = readBehaviorUntracked b
1861−-- instance isn't an orphan instance.
2510+
1862−#include "SpiderTimeline.include.hs"
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
1865unsafeNewSpiderTimelineEnv :: forall x. IO (SpiderTimelineEnv x)
2713unsafeNewSpiderTimelineEnv :: forall x. IO (SpiderTimelineEnv x)
1866unsafeNewSpiderTimelineEnv = do
2714unsafeNewSpiderTimelineEnv = do
@@ -1869,7 +2717,7 @@ unsafeNewSpiderTimelineEnv = do
1869#ifdef DEBUG
2717#ifdef DEBUG
1870 depthRef <- newIORef 0
2718 depthRef <- newIORef 0
1872− return $ SpiderTimelineEnv
2720+ return $ STE $ SpiderTimelineEnv
1873 { _spiderTimeline_lock = lock
2721 { _spiderTimeline_lock = lock
1874 , _spiderTimeline_eventEnv = env
2722 , _spiderTimeline_eventEnv = env
1875#ifdef DEBUG
2723#ifdef DEBUG
@@ -1879,65 +2727,59 @@ unsafeNewSpiderTimelineEnv = do
1880-- | Create a new SpiderTimelineEnv
2728-- | Create a new SpiderTimelineEnv
1881newSpiderTimeline :: IO (Some SpiderTimelineEnv)
2729newSpiderTimeline :: IO (Some SpiderTimelineEnv)
1882−newSpiderTimeline = withSpiderTimeline (pure . Some.This)
2730+newSpiderTimeline = withSpiderTimeline (pure . Some)
1884−-- | Pass a new timeline to the given function.
2732+data LocalSpiderTimeline (x :: Type) s
1885−withSpiderTimeline :: (forall x. SpiderTimelineEnv x -> IO r) -> IO r
1886−withSpiderTimeline k = unsafeNewSpiderTimelineEnv >>= k
1888−newtype SpiderPullM x a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2734+instance Reifies s (SpiderTimelineEnv x) =>
2735+ HasSpiderTimeline (LocalSpiderTimeline x s) where
2736+ spiderTimeline = localSpiderTimeline Proxy $ reflect (Proxy :: Proxy s)
1890−newtype SpiderPushM x a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2738+localSpiderTimeline
2740+ -> SpiderTimelineEnv x
2741+ -> SpiderTimelineEnv (LocalSpiderTimeline x s)
2742+localSpiderTimeline _ = coerce
1892−instance HasSpiderTimeline x => Functor (R.Dynamic (SpiderTimeline x)) where
2744+-- | Pass a new timeline to the given function.
1893− fmap f = SpiderDynamic . newMapDyn f . unSpiderDynamic
2745+withSpiderTimeline :: (forall x. HasSpiderTimeline x => SpiderTimelineEnv x -> IO r) -> IO r
2746+withSpiderTimeline k = do
2747+ env <- unsafeNewSpiderTimelineEnv
2748+ reify env $ \s -> k $ localSpiderTimeline s env
1895−instance HasSpiderTimeline x => Applicative (R.Dynamic (SpiderTimeline x)) where
2750+newtype SpiderPullM (x :: Type) a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
1896− pure = SpiderDynamic . dynamicConst
1897− SpiderDynamic a <*> SpiderDynamic b = SpiderDynamic $ zipDynWith ($) a b
1901−instance HasSpiderTimeline x => Monad (R.Dynamic (SpiderTimeline x)) where
2752+type ComputeM = EventM
1902− {-# INLINE return #-}
2753+
1903− return = pure
2754+newtype SpiderPushM (x :: Type) a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
1904− {-# INLINE (>>=) #-}
1905− x >>= f = SpiderDynamic $ dynamicDynIdentity $ newJoinDyn $ newMapDyn (unSpiderDynamic . f) $ unSpiderDynamic x
1906− {-# INLINE (>>) #-}
1908− {-# INLINE fail #-}
1909− fail _ = error "Dynamic does not support 'fail'"
1911−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
1912−instance t ~ SpiderTimeline Global => R.Reflex t where
1913− newtype Behavior t a = SpiderBehavior { unSpiderBehavior :: Behavior Global a }
1914− newtype Event t a = SpiderEvent { unSpiderEvent :: Event Global a }
1915− newtype Dynamic t a = SpiderDynamic { unSpiderDynamic :: Dynamic Global (Identity a) } -- deriving (Functor, Applicative, Monad)
1916− newtype Incremental t p = SpiderIncremental { unSpiderIncremental :: Dynamic Global p }
1917− type PullM t = SpiderPullM Global
1918− type PushM t = SpiderPushM Global
1920instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
2756instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
1921 {-# SPECIALIZE instance R.Reflex (SpiderTimeline Global) #-}
2757 {-# SPECIALIZE instance R.Reflex (SpiderTimeline Global) #-}
1922 newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
2758 newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
1923 newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
2759 newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
1924− 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)
1925− newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: Dynamic x p }
2761+ newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: DynamicS x p }
1926 type PullM (SpiderTimeline x) = SpiderPullM x
2762 type PullM (SpiderTimeline x) = SpiderPullM x
1927 type PushM (SpiderTimeline x) = SpiderPushM x
2763 type PushM (SpiderTimeline x) = SpiderPushM x
1929 {-# INLINABLE never #-}
2764 {-# INLINABLE never #-}
1930 never = SpiderEvent eventNever
2765 never = SpiderEvent eventNever
1931 {-# INLINABLE constant #-}
2766 {-# INLINABLE constant #-}
1932 constant = SpiderBehavior . behaviorConst
2767 constant = SpiderBehavior . behaviorConst
1933 {-# INLINE push #-}
2768 {-# INLINE push #-}
1934 push f = SpiderEvent . push (coerce f) . unSpiderEvent
2769 push f = SpiderEvent . push (coerce f) . unSpiderEvent
2770+ {-# INLINE pushCheap #-}
2771+ pushCheap f = SpiderEvent . pushCheap (coerce f) . unSpiderEvent
1935 {-# INLINABLE pull #-}
2772 {-# INLINABLE pull #-}
1936 pull = SpiderBehavior . pull . coerce
2773 pull = SpiderBehavior . pull . coerce
1937− {-# INLINABLE merge #-}
2774+ {-# INLINABLE fanG #-}
1938− merge = SpiderEvent . merge . dynamicConst . (coerce :: DMap k (R.Event (SpiderTimeline x)) -> DMap k (Event x))
1939− {-# INLINABLE fan #-}
1940− fan e = R.EventSelector $ SpiderEvent . select (fan (unSpiderEvent e))
2775+ fanG e = R.EventSelectorG $ SpiderEvent . selectG (fanG (unSpiderEvent e))
2776+ {-# INLINABLE mergeG #-}
2778+ :: forall k2 (k :: k2 -> *) q (v :: k2 -> *). GCompare k
2779+ => (forall a. q a -> R.Event (SpiderTimeline x) (v a))
2781+ -> R.Event (SpiderTimeline x) (DMap k v)
2782+ mergeG nt = SpiderEvent . mergeG (unSpiderEvent #. nt) . dynamicConst
1941 {-# INLINABLE switch #-}
2783 {-# INLINABLE switch #-}
1942 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
1943 {-# INLINABLE coincidence #-}
2785 {-# INLINABLE coincidence #-}
@@ -1945,81 +2787,31 @@ instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
1945 {-# INLINABLE current #-}
2787 {-# INLINABLE current #-}
1946 current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
2788 current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
1947 {-# INLINABLE updated #-}
2789 {-# INLINABLE updated #-}
1948− updated = SpiderEvent . fmap runIdentity . dynamicUpdated . unSpiderDynamic
2790+ updated = SpiderEvent #. dynamicUpdated .# fmap coerce . unSpiderDynamic
1949 {-# INLINABLE unsafeBuildDynamic #-}
2791 {-# INLINABLE unsafeBuildDynamic #-}
1950− unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeDyn (coerce readV0) $ coerce $ unSpiderEvent v'
2792+ unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (coerce readV0) $ coerce $ unSpiderEvent v'
1951 {-# INLINABLE unsafeBuildIncremental #-}
2793 {-# INLINABLE unsafeBuildIncremental #-}
1952− unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeDyn (coerce readV0) $ unSpiderEvent dv
2794+ unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeBuildDynamic (coerce readV0) $ unSpiderEvent dv
1953− {-# INLINABLE mergeIncremental #-}
2795+ {-# INLINABLE mergeIncrementalG #-}
1954− 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
1955 {-# INLINABLE currentIncremental #-}
2799 {-# INLINABLE currentIncremental #-}
1956 currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
2800 currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
1957 {-# INLINABLE updatedIncremental #-}
2801 {-# INLINABLE updatedIncremental #-}
1958 updatedIncremental = SpiderEvent . dynamicUpdated . unSpiderIncremental
2802 updatedIncremental = SpiderEvent . dynamicUpdated . unSpiderIncremental
1959 {-# INLINABLE incrementalToDynamic #-}
2803 {-# INLINABLE incrementalToDynamic #-}
1960− 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
1961 c <- readBehaviorUntracked $ dynamicCurrent i
2805 c <- readBehaviorUntracked $ dynamicCurrent i
1962 return $ Identity <$> apply p c --TODO: Avoid the redundant 'apply'
2806 return $ Identity <$> apply p c --TODO: Avoid the redundant 'apply'
1963 eventCoercion Coercion = Coercion
2807 eventCoercion Coercion = Coercion
1964 behaviorCoercion Coercion = Coercion
2808 behaviorCoercion Coercion = Coercion
1965− 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
1966−
2810+ incrementalCoercion Coercion Coercion = Coercion
1967−instance HasSpiderTimeline x => R.MonadSample (SpiderTimeline x) (EventM x) where
1968− {-# INLINABLE sample #-}
1969− sample (SpiderBehavior b) = readBehaviorUntracked b
1971−instance HasSpiderTimeline x => R.MonadHold (SpiderTimeline x) (EventM x) where
1972− {-# INLINABLE hold #-}
1973− hold = holdSpiderEventM
1974− {-# INLINABLE holdDyn #-}
1975− holdDyn = holdDynSpiderEventM
1976− {-# INLINABLE holdIncremental #-}
1977− holdIncremental = holdIncrementalSpiderEventM
1979−holdSpiderEventM :: HasSpiderTimeline x => a -> R.Event (SpiderTimeline x) a -> EventM x (R.Behavior (SpiderTimeline x) a)
1980−holdSpiderEventM v0 e = fmap (SpiderBehavior . behaviorHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
1982−holdDynSpiderEventM :: HasSpiderTimeline x => a -> R.Event (SpiderTimeline x) a -> EventM x (R.Dynamic (SpiderTimeline x) a)
1983−holdDynSpiderEventM v0 e = fmap (SpiderDynamic . dynamicHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
1985−holdIncrementalSpiderEventM :: (HasSpiderTimeline x, Patch p) => PatchTarget p -> R.Event (SpiderTimeline x) p -> EventM x (R.Incremental (SpiderTimeline x) p)
1986−holdIncrementalSpiderEventM v0 e = fmap (SpiderIncremental . dynamicHold) $ hold v0 $ unSpiderEvent e
1988−instance HasSpiderTimeline x => R.MonadHold (SpiderTimeline x) (SpiderHost x) where
1989− {-# INLINABLE hold #-}
1990− hold v0 e = R.runHostFrame $ R.hold v0 e
1991− {-# INLINABLE holdDyn #-}
1992− holdDyn v0 e = R.runHostFrame $ R.holdDyn v0 e
1993− {-# INLINABLE holdIncremental #-}
1994− holdIncremental v0 e = R.runHostFrame $ R.holdIncremental v0 e
1996−instance HasSpiderTimeline x => R.MonadSample (SpiderTimeline x) (SpiderHost x) where
1997− {-# INLINABLE sample #-}
1998− sample = runFrame . readBehaviorUntracked . unSpiderBehavior
2001−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2004− ) => R.MonadSample (SpiderTimeline x) (SpiderPullM x) where
2005− {-# INLINABLE sample #-}
2006− sample = coerce . readBehaviorTracked . unSpiderBehavior
2009−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2012− ) => R.MonadSample (SpiderTimeline x) (SpiderPushM x) where
2013− {-# INLINABLE sample #-}
2811+ {-# INLINABLE mergeIntIncremental #-}
2014− sample (SpiderBehavior b) = SpiderPushM $ readBehaviorUntracked b
2812+ mergeIntIncremental = SpiderEvent . mergeInt . coerce
2016−instance HasSpiderTimeline x => R.MonadHold (SpiderTimeline x) (SpiderPushM x) where
2017− {-# INLINABLE hold #-}
2813+ {-# INLINABLE fanInt #-}
2018− hold v0 e = R.current <$> R.holdDyn v0 e
2814+ fanInt e = R.EventSelectorInt $ SpiderEvent . selectInt (fanInt (unSpiderEvent e))
2019− {-# INLINABLE holdDyn #-}
2020− holdDyn v0 (SpiderEvent e) = SpiderPushM $ fmap (SpiderDynamic . dynamicHoldIdentity) $ hold v0 $ coerce e
2021− {-# INLINABLE holdIncremental #-}
2022− holdIncremental v0 (SpiderEvent e) = SpiderPushM $ SpiderIncremental . dynamicHold <$> hold v0 e
2024data 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)
@@ -2028,35 +2820,6 @@ data SpiderEventHandle x a = SpiderEventHandle
2028 , spiderEventHandleValue :: IORef (Maybe a)
2820 , spiderEventHandleValue :: IORef (Maybe a)
2031−instance HasSpiderTimeline x => R.MonadSubscribeEvent (SpiderTimeline x) (SpiderHostFrame x) where
2032− {-# INLINABLE subscribeEvent #-}
2033− subscribeEvent e = SpiderHostFrame $ do
2034− --TODO: Unsubscribe eventually (manually and/or with weak ref)
2035− val <- liftIO $ newIORef Nothing
2036− subscription <- subscribe (unSpiderEvent e) $ Subscriber
2037− { subscriberPropagate = \a -> do
2038− liftIO $ writeIORef val $ Just a
2040− , subscriberInvalidateHeight = \_ -> return ()
2041− , subscriberRecalculateHeight = \_ -> return ()
2043− return $ SpiderEventHandle
2044− { spiderEventHandleSubscription = subscription
2045− , spiderEventHandleValue = val
2048−instance HasSpiderTimeline x => R.ReflexHost (SpiderTimeline x) where
2049− type EventTrigger (SpiderTimeline x) = RootTrigger x
2050− type EventHandle (SpiderTimeline x) = SpiderEventHandle x
2051− type HostFrame (SpiderTimeline x) = SpiderHostFrame x
2053−instance HasSpiderTimeline x => R.MonadReadEvent (SpiderTimeline x) (ReadPhase x) where
2054− {-# NOINLINE readEvent #-}
2055− readEvent h = ReadPhase $ fmap (fmap return) $ liftIO $ do
2056− result <- readIORef $ spiderEventHandleValue h
2060instance MonadRef (EventM x) where
2823instance MonadRef (EventM x) where
2061 type Ref (EventM x) = Ref IO
2824 type Ref (EventM x) = Ref IO
2062 {-# INLINABLE newRef #-}
2825 {-# INLINABLE newRef #-}
@@ -2071,7 +2834,7 @@ instance MonadAtomicRef (EventM x) where
2071 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2834 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2073-- | 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@
2074−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)
2076instance Monad (SpiderHost x) where
2839instance Monad (SpiderHost x) where
2077 {-# INLINABLE (>>=) #-}
2840 {-# INLINABLE (>>=) #-}
@@ -2080,20 +2843,27 @@ instance Monad (SpiderHost x) where
2080 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2843 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2081 {-# INLINABLE return #-}
2844 {-# INLINABLE return #-}
2082 return x = SpiderHost $ return x
2845 return x = SpiderHost $ return x
2846+#if !MIN_VERSION_base(4,13,0)
2083 {-# INLINABLE fail #-}
2847 {-# INLINABLE fail #-}
2848+ fail = MonadFail.fail
2851+instance MonadFail (SpiderHost x) where
2852+ {-# INLINABLE fail #-}
2084− fail s = SpiderHost $ fail s
2853+ fail s = SpiderHost $ MonadFail.fail s
2086-- | 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
2087-- a mutex for that timeline
2856-- a mutex for that timeline
2088runSpiderHost :: SpiderHost Global a -> IO a
2857runSpiderHost :: SpiderHost Global a -> IO a
2089−runSpiderHost (SpiderHost a) = runReaderT a globalSpiderTimelineEnv
2858+runSpiderHost (SpiderHost a) = a
2091-- | 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
2092-- mutex for that timeline
2861-- mutex for that timeline
2093runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimelineEnv x -> IO a
2862runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimelineEnv x -> IO a
2094−runSpiderHostForTimeline (SpiderHost a) = runReaderT a
2863+runSpiderHostForTimeline (SpiderHost a) _ = a
2865+newtype SpiderHostFrame (x :: Type) a = SpiderHostFrame { runSpiderHostFrame :: EventM x a }
2096−newtype SpiderHostFrame x a = SpiderHostFrame { runSpiderHostFrame :: EventM x a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2866+ deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2098instance Monad (SpiderHostFrame x) where
2868instance Monad (SpiderHostFrame x) where
2099 {-# INLINABLE (>>=) #-}
2869 {-# INLINABLE (>>=) #-}
@@ -2102,26 +2872,21 @@ instance Monad (SpiderHostFrame x) where
2102 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2872 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2103 {-# INLINABLE return #-}
2873 {-# INLINABLE return #-}
2104 return x = SpiderHostFrame $ return x
2874 return x = SpiderHostFrame $ return x
2875+#if !MIN_VERSION_base(4,13,0)
2105 {-# INLINABLE fail #-}
2876 {-# INLINABLE fail #-}
2106 fail s = SpiderHostFrame $ fail s
2877 fail s = SpiderHostFrame $ fail s
2108−instance HasSpiderTimeline x => R.MonadSample (SpiderTimeline x) (SpiderHostFrame x) where
2109− sample = SpiderHostFrame . readBehaviorUntracked . unSpiderBehavior --TODO: This can cause problems with laziness, so we should get rid of it if we can
2111−instance HasSpiderTimeline x => R.MonadHold (SpiderTimeline x) (SpiderHostFrame x) where
2880+instance NotReady (SpiderTimeline x) (SpiderHostFrame x) where
2112− {-# INLINABLE hold #-}
2881+ notReadyUntil _ = pure ()
2113− hold v0 e = SpiderHostFrame $ fmap (SpiderBehavior . behaviorHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
2882+ notReady = pure ()
2114− {-# INLINABLE holdDyn #-}
2115− holdDyn v0 e = SpiderHostFrame $ fmap (SpiderDynamic . dynamicHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
2116− {-# INLINABLE holdIncremental #-}
2117− holdIncremental v0 e = SpiderHostFrame $ fmap (SpiderIncremental . dynamicHold) $ hold v0 $ unSpiderEvent e
2119−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)
2120newEventWithTriggerIO f = do
2885newEventWithTriggerIO f = do
2121 es <- newFanEventWithTriggerIO $ \Refl -> f
2886 es <- newFanEventWithTriggerIO $ \Refl -> f
2122 return $ select es Refl
2887 return $ select es Refl
2124−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)
2125newFanEventWithTriggerIO f = do
2890newFanEventWithTriggerIO f = do
2126 occRef <- newIORef DMap.empty
2891 occRef <- newIORef DMap.empty
2127 subscribedRef <- newIORef DMap.empty
2892 subscribedRef <- newIORef DMap.empty
@@ -2132,49 +2897,8 @@ newFanEventWithTriggerIO f = do
2133 return $ EventSelector $ \k -> eventRoot k r
2898 return $ EventSelector $ \k -> eventRoot k r
2136−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2139− ) => R.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHost x) where
2140− newEventWithTrigger = SpiderHost . lift . fmap SpiderEvent . newEventWithTriggerIO
2141− newFanEventWithTrigger f = SpiderHost $ lift $ do
2142− es <- newFanEventWithTriggerIO f
2143− return $ R.EventSelector $ SpiderEvent . select es
2146−#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2149− ) => R.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHostFrame x) where
2150− newEventWithTrigger = SpiderHostFrame . EventM . liftIO . fmap SpiderEvent . newEventWithTriggerIO
2151− newFanEventWithTrigger f = SpiderHostFrame $ EventM $ liftIO $ do
2152− es <- newFanEventWithTriggerIO f
2153− return $ R.EventSelector $ SpiderEvent . select es
2155−instance HasSpiderTimeline x => R.MonadSubscribeEvent (SpiderTimeline x) (SpiderHost x) where
2156− {-# INLINABLE subscribeEvent #-}
2157− subscribeEvent = runFrame . runSpiderHostFrame . R.subscribeEvent
2159newtype ReadPhase x a = ReadPhase (ResultM x a) deriving (Functor, Applicative, Monad, MonadFix)
2900newtype ReadPhase x a = ReadPhase (ResultM x a) deriving (Functor, Applicative, Monad, MonadFix)
2161−instance HasSpiderTimeline x => R.MonadSample (SpiderTimeline x) (ReadPhase x) where
2162− {-# INLINABLE sample #-}
2163− sample = ReadPhase . R.sample
2165−instance HasSpiderTimeline x => R.MonadHold (SpiderTimeline x) (ReadPhase x) where
2166− {-# INLINABLE hold #-}
2167− hold v0 e = ReadPhase $ R.hold v0 e
2168− {-# INLINABLE holdDyn #-}
2169− holdDyn v0 e = ReadPhase $ R.holdDyn v0 e
2170− {-# INLINABLE holdIncremental #-}
2171− holdIncremental v0 e = ReadPhase $ R.holdIncremental v0 e
2173−instance HasSpiderTimeline x => R.MonadReflexHost (SpiderTimeline x) (SpiderHost x) where
2174− type ReadPhase (SpiderHost x) = ReadPhase x
2175− fireEventsAndRead es (ReadPhase a) = run es a
2176− runHostFrame = runFrame . runSpiderHostFrame
2178instance MonadRef (SpiderHost x) where
2902instance MonadRef (SpiderHost x) where
2179 type Ref (SpiderHost x) = Ref IO
2903 type Ref (SpiderHost x) = Ref IO
2180 newRef = SpiderHost . newRef
2904 newRef = SpiderHost . newRef
@@ -2197,9 +2921,10 @@ instance PrimMonad (SpiderHostFrame x) where
2197 type PrimState (SpiderHostFrame x) = PrimState IO
2921 type PrimState (SpiderHostFrame x) = PrimState IO
2198 primitive = SpiderHostFrame . EventM . primitive
2922 primitive = SpiderHostFrame . EventM . primitive
2200−--------------------------------------------------------------------------------
2924+instance NotReady (SpiderTimeline x) (SpiderHost x) where
2201−-- Deprecated items
2925+ notReadyUntil _ = return ()
2202−--------------------------------------------------------------------------------
2926+ notReady = return ()
2204−{-# DEPRECATED SpiderEnv "Use 'SpiderTimelineEnv' instead" #-}
2928+instance HasSpiderTimeline x => NotReady (SpiderTimeline x) (PerformEventT (SpiderTimeline x) (SpiderHost x)) where
2205−type SpiderEnv = SpiderTimeline
2929+ notReadyUntil _ = return ()
2930+ notReady = return ()