@@ -9,49 +9,40 @@
99{-# LANGUAGE GADTs #-}
1010{-# LANGUAGE GeneralizedNewtypeDeriving #-}
1111{-# LANGUAGE LambdaCase #-}
12+{-# LANGUAGE MagicHash #-}
13+{-# LANGUAGE MultiParamTypeClasses #-}
14+{-# LANGUAGE MultiWayIf #-}
1215{-# LANGUAGE RankNTypes #-}
1316{-# LANGUAGE RoleAnnotations #-}
1417{-# LANGUAGE ScopedTypeVariables #-}
1518{-# LANGUAGE TypeFamilies #-}
1619{-# LANGUAGE TypeOperators #-}
1720{-# LANGUAGE UndecidableInstances #-}
18−{-# LANGUAGE PolyKinds #-}
19−{-# LANGUAGE DeriveFunctor #-}
20−{-# LANGUAGE StandaloneDeriving #-}
21−{-# LANGUAGE InstanceSigs #-}
22−{-# LANGUAGE MultiWayIf #-}
23−
2421#ifdef USE_REFLEX_OPTIMIZER
2522{-# OPTIONS_GHC -fplugin=Reflex.Optimizer #-}
2623#endif
27−{-# OPTIONS_GHC -Wunused-binds #-}
24+#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
25+{-# OPTIONS_GHC -fno-warn-orphans #-}
26+#endif
2827-- | This module is the implementation of the 'Spider' 'Reflex' engine. It uses
2928-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
3029module Reflex.Spider.Internal (module Reflex.Spider.Internal) where
3130
32−#if MIN_VERSION_base(4,10,0)
33−import Control.Applicative (liftA2)
34−#endif
31+import Control.Applicative
3532import Control.Concurrent
3633import Control.Exception
37−import Control.Monad hiding (forM, forM_, mapM, mapM_)
34+import Control.Monad hiding (forM, forM_, mapM, mapM_, sequence)
3835import Control.Monad.Exception
39−import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_)
36+import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_, sequence)
4037import Control.Monad.Primitive
41−import Control.Monad.Reader.Class
42−import Control.Monad.IO.Class
43−import Control.Monad.ReaderIO
38+import Control.Monad.Reader hiding (forM, forM_, mapM, mapM_, sequence)
4439import Control.Monad.Ref
45−import Control.Monad.Fail (MonadFail)
46−import qualified Control.Monad.Fail as MonadFail
4740import Data.Align
4841import Data.Coerce
49−import Data.Dependent.Map (DMap)
42+import Data.Dependent.Map (DMap, DSum (..))
5043import 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
5444import Data.Foldable hiding (concat, elem, sequence_)
45+import Data.Function
5546import Data.Functor.Constant
5647import Data.Functor.Misc
5748import Data.Functor.Product
@@ -59,73 +50,60 @@ import Data.GADT.Compare
5950import Data.IntMap.Strict (IntMap)
6051import qualified Data.IntMap.Strict as IntMap
6152import Data.IORef
62−import Data.Kind (Type)
63−import Data.Maybe hiding (mapMaybe)
64−import Data.Monoid (mempty, (<>))
53+import Data.List hiding (foldl')
54+import Data.Maybe
55+import Data.Monoid ((<>))
6556import Data.Proxy
6657import Data.These
6758import Data.Traversable
68−import Data.Type.Equality ((:~:)(Refl))
69−import Data.Witherable (Filterable, mapMaybe)
70−import GHC.Exts hiding (toList)
59+import Data.Word
60+import GHC.Exts
7161import GHC.IORef (IORef (..))
7262import GHC.Stack
7363import Reflex.FastWeak
64+import Reflex.FunctorMaybe
7465import System.IO.Unsafe
7566import System.Mem.Weak
7667import Unsafe.Coerce
7768
78−#ifdef MIN_VERSION_semialign
79−#if MIN_VERSION_these(0,8,0)
80−import Data.These.Combinators (justThese)
81−#endif
82−#if MIN_VERSION_semialign(1,1,0)
83−import Data.Zip (Zip (..))
84−#endif
85−#endif
86−
8769#ifdef DEBUG_CYCLES
8870import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
89−#endif
90−
9171import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
9272import qualified Data.List.NonEmpty as NonEmpty
73+import Data.Monoid (mempty)
9374import Data.Tree (Forest, Tree (..), drawForest)
94−import Data.List (isPrefixOf)
75+#endif
9576
96−import Data.FastWeakBag (FastWeakBag, FastWeakBagTicket)
77+import Data.FastWeakBag (FastWeakBag)
9778import qualified Data.FastWeakBag as FastWeakBag
98−
99−import Data.Reflection
100−import Data.Some (Some(Some))
101−import Data.Type.Coercion
102−import Data.Profunctor.Unsafe ((#.), (.#))
10379import Data.WeakBag (WeakBag, WeakBagTicket, _weakBag_children)
10480import qualified Data.WeakBag as WeakBag
81+#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
82+import Data.Reflection
83+import Data.Some (Some)
84+import qualified Data.Some as Some
85+import Data.Type.Coercion
10586import qualified Reflex.Class
10687import qualified Reflex.Class as R
10788import qualified Reflex.Host.Class
108−import Reflex.NotReady.Class
109−import Data.Patch
110−import qualified Data.Patch.DMapWithMove as PatchDMapWithMove
111−import Reflex.PerformEvent.Base (PerformEventT)
89+#endif
90+import Reflex.Patch
91+import qualified Reflex.Patch.DMapWithMove as PatchDMapWithMove
92+
93+-- Note: must come last to silence warnings due to AMP on GHC < 7.10
94+import Prelude hiding (any, concat, mapM, mapM_, sequence)
11295
11396#ifdef DEBUG_TRACE_EVENTS
114−import qualified Data.ByteString.Char8 as BS8
11597import System.IO (stderr)
116−import Data.List (isPrefixOf)
98+import qualified Data.ByteString.Char8 as BS8
11799#endif
118100
119−-- TODO stdout might not be the best channel for debug output
120−debugStrLn :: String -> IO ()
121−debugStrLn = putStrLn
122−
123101#ifdef DEBUG_TRACE_EVENTS
102+
124103withStackOneLine :: (BS8.ByteString -> a) -> a
125104withStackOneLine expr = unsafePerformIO $ do
126105 stack <- currentCallStack
127− return (expr . BS8.pack . unwords . dropInternal . reverse $ stack)
128− where dropInternal = filterStack "Reflex.Spider.Internal"
106+ return (expr (BS8.pack (unwords (reverse stack))))
129107
130108#endif
131109
@@ -136,42 +114,28 @@ debugInvalidateHeight :: Bool
136114debugInvalidate :: Bool
137115
138116#ifdef DEBUG
117+
139118#define DEBUG_NODEIDS
140119
141−#ifdef DEBUG_TRACE_PROPAGATION
142120debugPropagate = True
143−#else
144−debugPropagate = False
145−#endif
146121
147−#ifdef DEBUG_TRACE_HEIGHT
148−debugInvalidateHeight = True
149−#else
150122debugInvalidateHeight = False
151−#endif
152123
153−#ifdef DEBUG_TRACE_INVALIDATION
154124debugInvalidate = True
155−#else
156−debugInvalidate = False
157−#endif
158125
159126class HasNodeId a where
160127 getNodeId :: a -> Int
161128
162−instance HasNodeId (CacheSubscribed x a) where
163− getNodeId = _cacheSubscribed_nodeId
164−
165−instance HasNodeId (FanInt x a) where
166− getNodeId = _fanInt_nodeId
167−
168−instance HasNodeId (Hold x p) where
129+instance HasNodeId (Hold x p a) where
169130 getNodeId = holdNodeId
170131
132+instance HasNodeId (PushSubscribed x a b) where
133+ getNodeId = pushSubscribedNodeId
134+
171135instance HasNodeId (SwitchSubscribed x a) where
172136 getNodeId = switchSubscribedNodeId
173137
174−instance HasNodeId (FanSubscribed x v a) where
138+instance HasNodeId (FanSubscribed x a) where
175139 getNodeId = fanSubscribedNodeId
176140
177141instance HasNodeId (CoincidenceSubscribed x a) where
@@ -185,16 +149,41 @@ instance HasNodeId (Pull x a) where
185149
186150{-# INLINE showNodeId #-}
187151showNodeId :: HasNodeId a => a -> String
188−showNodeId = showNodeId' . getNodeId
189−
190−showNodeId' :: Int -> String
191−showNodeId' = ("#"<>) . show
192−
152+showNodeId = ("#"<>) . show . getNodeId
153+
154+showSubscriberType :: Subscriber x a -> String
155+showSubscriberType = \case
156+ SubscriberPush _ _ -> "SubscriberPush"
157+ SubscriberMerge _ _ -> "SubscriberMerge"
158+ SubscriberFan _ -> "SubscriberFan"
159+ SubscriberMergeChange _ -> "SubscriberMergeChange"
160+ SubscriberHold _ -> "SubscriberHold"
161+ SubscriberHoldIdentity _ -> "SubscriberHoldIdentity"
162+ SubscriberSwitch _ -> "SubscriberSwitch"
163+ SubscriberCoincidenceOuter _ -> "SubscriberCoincidenceOuter"
164+ SubscriberCoincidenceInner _ -> "SubscriberCoincidenceInner"
165+ SubscriberHandle -> "SubscriberHandle"
166+
167+showEventType :: Event x a -> String
168+showEventType = \case
169+ EventRoot _ _ -> "EventRoot"
170+ EventNever -> "EventNever"
171+ EventPush _ -> "EventPush"
172+ EventMerge _ -> "EventMerge"
173+ EventFan _ _ -> "EventFan"
174+ EventSwitch _ -> "EventSwitch"
175+ EventCoincidence _ -> "EventCoincidence"
176+ EventHold _ -> "EventHold"
177+ EventDyn _ -> "EventDyn"
178+ EventHoldIdentity _ -> "EventHoldIdentity"
179+ EventDynIdentity _ -> "EventDynIdentity"
193180
194181#else
195182
196183debugPropagate = False
184+
197185debugInvalidateHeight = False
186+
198187debugInvalidate = False
199188
200189-- This must be inline, or error messages will cause memory leaks due to retaining the node in question
@@ -202,10 +191,6 @@ debugInvalidate = False
202191showNodeId :: a -> String
203192showNodeId _ = ""
204193
205−{-# INLINE showNodeId' #-}
206−showNodeId' :: Int -> String
207−showNodeId' _ = ""
208−
209194#endif
210195
211196#ifdef DEBUG_NODEIDS
@@ -215,6 +200,12 @@ nextNodeIdRef = unsafePerformIO $ newIORef 1
215200
216201newNodeId :: IO Int
217202newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
203+
204+{-# NOINLINE unsafeNodeId #-}
205+unsafeNodeId :: a -> Int
206+unsafeNodeId a = unsafePerformIO $ do
207+ touch a
208+ newNodeId
218209#endif
219210
220211--------------------------------------------------------------------------------
@@ -250,85 +241,31 @@ subscribeAndRead = unEvent
250241-- | Construct an 'Event' equivalent to that constructed by 'push', but with no
251242-- caching; if the computation function is very cheap, this is (much) more
252243-- efficient than 'push'
253−{-# INLINE [1] pushCheap #-}
244+{-# NOINLINE pushCheap #-}
254245pushCheap :: HasSpiderTimeline x => (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
255−pushCheap !f e = Event $ \sub -> do
256− (subscription, occ) <- subscribeAndRead e $ debugSubscriber' "push" $ sub
246+pushCheap f e = Event $ \sub -> do
247+ (subscription, occ) <- subscribeAndRead e $ sub
257248 { subscriberPropagate = \a -> do
258− mb <- f a
249+ mb <- runComputeM $ f a
259250 mapM_ (subscriberPropagate sub) mb
260251 }
261− occ' <- join <$> mapM f occ
252+ occ' <- join <$> mapM (runComputeM . f) occ
262253 return (subscription, occ')
263254
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 ()
271− }
272−
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
282− }
283− liftIO $ case occ of
284− Nothing -> writeIORef subscriptionRef $! subscription
285− Just _ -> unsubscribe subscription
286− return (subscription, occ)
287−
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)
290−headE originalE = do
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
300−
301255data CacheSubscribed x a
302256 = CacheSubscribed { _cacheSubscribed_subscribers :: {-# UNPACK #-} !(FastWeakBag (Subscriber x a))
303257 , _cacheSubscribed_parent :: {-# UNPACK #-} !(EventSubscription x)
258+ , _cacheSubscribed_cached :: {-# UNPACK #-} !(IORef (Maybe (FastWeakTicket (CacheSubscribed x a))))
304259 , _cacheSubscribed_occurrence :: {-# UNPACK #-} !(IORef (Maybe a))
305−#ifdef DEBUG_NODEIDS
306− , _cacheSubscribed_nodeId :: {-# UNPACK #-} !Int
307−#endif
308260 }
309261
310−nowSpiderEventM :: (HasSpiderTimeline x) => EventM x (R.Event (SpiderTimeline x) ())
311−nowSpiderEventM =
312− SpiderEvent <$> now
313−
314−now :: (MonadIO m, Defer (Some Clear) m, HasSpiderTimeline x
315− ) => m (Event x ())
316−now = do
317− nowOrNot <- liftIO $ newIORef $ Just ()
318− scheduleClear nowOrNot
319− return . Event $ \_ -> do
320− occ <- liftIO . readIORef $ nowOrNot
321− return ( EventSubscription (return ()) eventSubscribedNow
322− , occ
323− )
324−
325262-- | Construct an 'Event' whose value is guaranteed not to be recomputed
326263-- repeatedly
327264--
328265--TODO: Try a caching strategy where we subscribe directly to the parent when
329266--there's only one subscriber, and then build our own FastWeakBag only when a second
330267--subscriber joins
331−{-# NOINLINE [0] cacheEvent #-}
268+{-# NOINLINE cacheEvent #-}
332269cacheEvent :: forall x a. HasSpiderTimeline x => Event x a -> Event x a
333270cacheEvent e =
334271#ifdef DEBUG_TRACE_EVENTS
@@ -336,79 +273,54 @@ cacheEvent e =
336273#else
337274 Event $
338275#endif
339− unsafePerformIO $ do
340− mSubscribedRef :: IORef (FastWeak (CacheSubscribed x a))
341− <- newIORef emptyFastWeak
342− pure $ \sub -> {-# SCC "cacheEvent" #-} do
276+ let mSubscribedRef :: IORef (Maybe (FastWeakTicket (CacheSubscribed x a)))
277+ !mSubscribedRef = unsafeNewIORef e Nothing
278+ in \sub -> {-# SCC "cacheEvent" #-} do
343279#ifdef DEBUG_TRACE_EVENTS
344280 unless (BS8.null callSite) $ liftIO $ BS8.hPutStrLn stderr callSite
345281#endif
346− subscribedTicket <- liftIO (readIORef mSubscribedRef >>= getFastWeakTicket) >>= \case
282+ subscribedTicket <- liftIO (readIORef mSubscribedRef) >>= \case
347283 Just subscribedTicket -> return subscribedTicket
348284 Nothing -> do
349−#ifdef DEBUG_NODEIDS
350− nodeId <- liftIO newNodeId
351−#endif
352285 subscribers <- liftIO FastWeakBag.empty
353286 occRef <- liftIO $ newIORef Nothing -- This should never be read prior to being set below
354−#ifdef DEBUG_NODEIDS
355− (parentSub, occ) <- subscribeAndRead e $ debugSubscriber' ("cacheEvent" <> showNodeId' nodeId) $ Subscriber
356−#else
357287 (parentSub, occ) <- subscribeAndRead e $ Subscriber
358−#endif
359− { subscriberPropagate = \a -> do
360− liftIO $ writeIORef occRef (Just a)
361− scheduleClear occRef
362− propagateFast a subscribers
363− , subscriberInvalidateHeight = FastWeakBag.traverse_ subscribers . invalidateSubscriberHeight
364− , subscriberRecalculateHeight = FastWeakBag.traverse_ subscribers . recalculateSubscriberHeight
365− }
288+ { subscriberPropagate = \a -> do
289+ liftIO $ writeIORef occRef $ Just a
290+ scheduleClear occRef
291+ propagateFast a subscribers
292+ , subscriberInvalidateHeight = \old -> do
293+ FastWeakBag.traverse subscribers $ invalidateSubscriberHeight old
294+ , subscriberRecalculateHeight = \new -> do
295+ FastWeakBag.traverse subscribers $ recalculateSubscriberHeight new
296+ }
366297 when (isJust occ) $ do
367298 liftIO $ writeIORef occRef occ -- Set the initial value of occRef; we don't need to do this if occ is Nothing
368299 scheduleClear occRef
369300 let !subscribed = CacheSubscribed
370301 { _cacheSubscribed_subscribers = subscribers
371302 , _cacheSubscribed_parent = parentSub
303+ , _cacheSubscribed_cached = mSubscribedRef
372304 , _cacheSubscribed_occurrence = occRef
373−#ifdef DEBUG_NODEIDS
374− , _cacheSubscribed_nodeId = nodeId
375−#endif
376305 }
377− subscribedTicket <- liftIO $ mkFastWeakTicket subscribed
378− liftIO $ writeIORef mSubscribedRef =<< getFastWeakTicketWeak subscribedTicket
306+ !subscribedTicket = fastWeakTicket subscribed
307+ liftIO $ writeIORef mSubscribedRef $ Just subscribedTicket
379308 return subscribedTicket
380− liftIO $ cacheSubscription sub mSubscribedRef subscribedTicket
381−
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
388−
389− let parentSub = _cacheSubscribed_parent subscribed
390− es = EventSubscription
391− { _eventSubscription_unsubscribe = do
392− FastWeakBag.remove ticket
393−
394− isEmpty <- FastWeakBag.isEmpty $ _cacheSubscribed_subscribers subscribed
395− when isEmpty $ do
396− writeIORef mSubscribedRef emptyFastWeak
397− unsubscribe parentSub
398− touch ticket
399− touch subscribedTicket
400− , _eventSubscription_subscribed = EventSubscribed
401− { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed parentSub
402− , eventSubscribedRetained = toAny subscribedTicket
403−#ifdef DEBUG_CYCLES
404− , eventSubscribedGetParents = return [_eventSubscription_subscribed parentSub]
405− , eventSubscribedHasOwnHeightRef = False
406− , eventSubscribedWhoCreated = whoCreatedIORef mSubscribedRef
407−#endif
408− }
409− }
410− return (es, occ)
309+ liftIO $ do
310+ let subscribed = fastWeakTicketValue subscribedTicket
311+ subscribedWeak <- getFastWeakTicketWeak subscribedTicket
312+ ticket <- FastWeakBag.insert sub (_cacheSubscribed_subscribers subscribed) subscribedWeak cleanupCacheSubscribed
313+ occ <- readIORef $ _cacheSubscribed_occurrence subscribed
314+ let es = EventSubscribed
315+ { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ _cacheSubscribed_parent subscribed
316+ , eventSubscribedRetained = toAny subscribed
317+ }
318+ return (EventSubscription (FastWeakBag.remove ticket >> touch ticket) es, occ)
411319
320+cleanupCacheSubscribed :: CacheSubscribed x a -> IO ()
321+cleanupCacheSubscribed self = do
322+ unsubscribe $ _cacheSubscribed_parent self
323+ writeIORef (_cacheSubscribed_cached self) Nothing
412324
413325subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x)
414326subscribe e s = fst <$> subscribeAndRead e s
@@ -420,16 +332,13 @@ wrap tag getSpecificSubscribed sub = do
420332 let es = tag subd
421333 return (EventSubscription (WeakBag.remove sln >> touch sln) es, occ)
422334
423−eventRoot :: (GCompare k, HasSpiderTimeline x) => k a -> Root x k -> Event x a
335+eventRoot :: GCompare k => k a -> Root x k -> Event x a
424336eventRoot !k !r = Event $ wrap eventSubscribedRoot $ liftIO . getRootSubscribed k r
425337
426−subscribeAndReadNever :: EventM x (EventSubscription x, Maybe a)
427−subscribeAndReadNever = return (EventSubscription (return ()) eventSubscribedNever, Nothing)
428−
429338eventNever :: Event x a
430−eventNever = Event $ const subscribeAndReadNever
339+eventNever = Event $ \_ -> return (EventSubscription (return ()) eventSubscribedNever, Nothing)
431340
432−eventFan :: (GCompare k, HasSpiderTimeline x) => k a -> Fan x k v -> Event x (v a)
341+eventFan :: (GCompare k, HasSpiderTimeline x) => k a -> Fan x k -> Event x a
433342eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
434343
435344eventSwitch :: HasSpiderTimeline x => Switch x a -> Event x a
@@ -438,14 +347,14 @@ eventSwitch !s = Event $ wrap eventSubscribedSwitch $ getSwitchSubscribed s
438347eventCoincidence :: HasSpiderTimeline x => Coincidence x a -> Event x a
439348eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
440349
441−eventHold :: Hold x p -> Event x p
350+eventHold :: HasSpiderTimeline x => Hold x p -> Event x p
442351eventHold !h = Event $ subscribeHoldEvent h
443352
444353eventDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Event x p
445354eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
446355
447356{-# INLINE subscribeCoincidenceInner #-}
448−subscribeCoincidenceInner :: HasSpiderTimeline x => Event x a -> Height -> CoincidenceSubscribed x a -> EventM x (Maybe a, Height, EventSubscribed x)
357+subscribeCoincidenceInner :: CanSubscribe x m => Event x a -> Height -> CoincidenceSubscribed x a -> m (Maybe a, Height, EventSubscribed x)
449358subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
450359 subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
451360 (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
@@ -464,6 +373,16 @@ data Subscriber x a = Subscriber
464373 , subscriberRecalculateHeight :: !(Height -> IO ())
465374 }
466375
376+--TODO: Move this comment to WeakBag
377+-- These function are constructor functions that are marked NOINLINE so they are
378+-- opaque to GHC. If we do not do this, then GHC will sometimes fuse the constructor away
379+-- so any weak references that are attached to the constructors will have their
380+-- finalizer run. Using the opaque constructor, does not see the
381+-- constructor application, so it behaves like an IORef and cannot be fused away.
382+--
383+-- The result is also evaluated to WHNF, since forcing a thunk invalidates
384+-- the weak pointer to it in some cases.
385+
467386newSubscriberHold :: (HasSpiderTimeline x, Patch p) => Hold x p -> IO (Subscriber x p)
468387newSubscriberHold h = return $ Subscriber
469388 { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
@@ -471,68 +390,85 @@ newSubscriberHold h = return $ Subscriber
471390 , subscriberRecalculateHeight = \_ -> return ()
472391 }
473392
474−newSubscriberFan :: forall x k v. (HasSpiderTimeline x, GCompare k) => FanSubscribed x k v -> IO (Subscriber x (DMap k v))
475−newSubscriberFan subscribed = debugSubscriber ("SubscriberFan " <> showNodeId subscribed) $ Subscriber
393+newSubscriberFan :: forall x k. (HasSpiderTimeline x, GCompare k) => FanSubscribed x k -> IO (Subscriber x (DMap k Identity))
394+newSubscriberFan subscribed = return $ Subscriber
476395 { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
477396 subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
478− tracePropagate (Proxy :: Proxy x) $ show (DMap.size subs) <> " keys subscribed, " <> show (DMap.size a) <> " keys firing"
397+ tracePropagate (Proxy :: Proxy x) $ "SubscriberFan" <> showNodeId subscribed <> ": " ++ show (DMap.size subs) ++ " keys subscribed, " ++ show (DMap.size a) ++ " keys firing"
479398 liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
480399 scheduleClear $ fanSubscribedOccurrence subscribed
481− let f _ (Pair v subsubs) = do
400+ let f _ (Pair (Identity v) subsubs) = do
482401 propagate v $ _fanSubscribedChildren_list subsubs
483402 return $ Constant ()
484403 _ <- DMap.traverseWithKey f $ DMap.intersectionWithKey (\_ -> Pair) a subs --TODO: Would be nice to have DMap.traverse_
485404 return ()
486405 , subscriberInvalidateHeight = \old -> do
406+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
487407 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
488− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
408+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
409+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
489410 , subscriberRecalculateHeight = \new -> do
411+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
490412 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
491− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
413+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
414+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
492415 }
493416
494417newSubscriberSwitch :: forall x a. HasSpiderTimeline x => SwitchSubscribed x a -> IO (Subscriber x a)
495−newSubscriberSwitch subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
418+newSubscriberSwitch subscribed = return $ Subscriber
496419 { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
420+ tracePropagate (Proxy :: Proxy x) $ "SubscriberSwitch" <> showNodeId subscribed
497421 liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
498422 scheduleClear $ switchSubscribedOccurrence subscribed
499423 propagate a $ switchSubscribedSubscribers subscribed
500424 , subscriberInvalidateHeight = \_ -> do
425+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
501426 oldHeight <- readIORef $ switchSubscribedHeight subscribed
502427 when (oldHeight /= invalidHeight) $ do
503428 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
504− WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
505− , subscriberRecalculateHeight = (`updateSwitchHeight` subscribed)
506− }
429+ WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
430+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
431+ , subscriberRecalculateHeight = \new -> do
432+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
433+ updateSwitchHeight new subscribed
434+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
435+ }
507436
508437newSubscriberCoincidenceOuter :: forall x b. HasSpiderTimeline x => CoincidenceSubscribed x b -> IO (Subscriber x (Event x b))
509−newSubscriberCoincidenceOuter subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
438+newSubscriberCoincidenceOuter subscribed = return $ Subscriber
510439 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
440+ tracePropagate (Proxy :: Proxy x) $ "SubscriberCoincidenceOuter" <> showNodeId subscribed
511441 outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
512442 tracePropagate (Proxy :: Proxy x) $ " outerHeight = " <> show outerHeight
513443 (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
514444 tracePropagate (Proxy :: Proxy x) $ " isJust occ = " <> show (isJust occ)
515445 tracePropagate (Proxy :: Proxy x) $ " innerHeight = " <> show innerHeight
516−
517446 liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
518447 scheduleClear $ coincidenceSubscribedInnerParent subscribed
519448 case occ of
520− Nothing ->
449+ Nothing -> do
521450 when (innerHeight > outerHeight) $ liftIO $ do -- If the event fires, it will fire at a later height
522451 writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
523− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
524− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
452+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
453+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
525454 Just o -> do -- Since it's already firing, no need to adjust height
526455 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
527456 scheduleClear $ coincidenceSubscribedOccurrence subscribed
528457 propagate o $ coincidenceSubscribedSubscribers subscribed
529− , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
530− , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
458+ , subscriberInvalidateHeight = \_ -> do
459+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
460+ invalidateCoincidenceHeight subscribed
461+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
462+ , subscriberRecalculateHeight = \_ -> do
463+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
464+ recalculateCoincidenceHeight subscribed
465+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
531466 }
532467
533468newSubscriberCoincidenceInner :: forall x a. HasSpiderTimeline x => CoincidenceSubscribed x a -> IO (Subscriber x a)
534−newSubscriberCoincidenceInner subscribed = debugSubscriber ("SubscriberCoincidenceInner" <> showNodeId subscribed) $ Subscriber
469+newSubscriberCoincidenceInner subscribed = return $ Subscriber
535470 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
471+ tracePropagate (Proxy :: Proxy x) $ "SubscriberCoincidenceInner" <> showNodeId subscribed
536472 occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
537473 case occ of
538474 Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
@@ -540,8 +476,14 @@ newSubscriberCoincidenceInner subscribed = debugSubscriber ("SubscriberCoinciden
540476 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
541477 scheduleClear $ coincidenceSubscribedOccurrence subscribed
542478 propagate a $ coincidenceSubscribedSubscribers subscribed
543− , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
544− , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
479+ , subscriberInvalidateHeight = \_ -> do
480+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
481+ invalidateCoincidenceHeight subscribed
482+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
483+ , subscriberRecalculateHeight = \_ -> do
484+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
485+ recalculateCoincidenceHeight subscribed
486+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
545487 }
546488
547489invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
@@ -551,18 +493,18 @@ recalculateSubscriberHeight :: Height -> Subscriber x a -> IO ()
551493recalculateSubscriberHeight = flip subscriberRecalculateHeight
552494
553495-- | Propagate everything at the current height
554−propagate :: forall x a. HasSpiderTimeline x => a -> WeakBag (Subscriber x a) -> EventM x ()
555−propagate a subscribers = withIncreasedDepth (Proxy::Proxy x) $
496+propagate :: a -> WeakBag (Subscriber x a) -> EventM x ()
497+propagate a subscribers = withIncreasedDepth $ do
556498 -- 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
557499 --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
500+ WeakBag.traverse subscribers $ \s -> subscriberPropagate s a
559501
560502-- | 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) $
503+propagateFast :: a -> FastWeakBag (Subscriber x a) -> EventM x ()
504+propagateFast a subscribers = withIncreasedDepth $ do
563505 -- 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
564506 --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
565− FastWeakBag.traverse_ subscribers $ \s -> subscriberPropagate s a
507+ FastWeakBag.traverse subscribers $ \s -> subscriberPropagate s a
566508
567509--------------------------------------------------------------------------------
568510-- EventSubscribed
@@ -571,16 +513,11 @@ propagateFast a subscribers = withIncreasedDepth (Proxy::Proxy x) $
571513toAny :: a -> Any
572514toAny = unsafeCoerce
573515
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
578−-- perfectly safe.
579516data EventSubscribed x = EventSubscribed
580517 { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
581518 , eventSubscribedRetained :: {-# NOUNPACK #-} !Any
582519#ifdef DEBUG_CYCLES
583− , eventSubscribedGetParents :: !(IO [EventSubscribed x]) -- For debugging loops
520+ , eventSubscribedGetParents :: !(IO [Some (EventSubscribed x)]) -- For debugging loops
584521 , eventSubscribedHasOwnHeightRef :: !Bool
585522 , eventSubscribedWhoCreated :: !(IO [String])
586523#endif
@@ -607,23 +544,13 @@ eventSubscribedNever = EventSubscribed
607544 , eventSubscribedWhoCreated = return ["never"]
608545#endif
609546 }
610−eventSubscribedNow :: EventSubscribed x
611−eventSubscribedNow = EventSubscribed
612− { eventSubscribedHeightRef = zeroRef
613− , eventSubscribedRetained = toAny ()
614−#ifdef DEBUG_CYCLES
615− , eventSubscribedGetParents = return []
616− , eventSubscribedHasOwnHeightRef = False
617− , eventSubscribedWhoCreated = return ["now"]
618−#endif
619− }
620547
621−eventSubscribedFan :: FanSubscribed x k v -> EventSubscribed x
548+eventSubscribedFan :: FanSubscribed x k -> EventSubscribed x
622549eventSubscribedFan !subscribed = EventSubscribed
623550 { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
624551 , eventSubscribedRetained = toAny subscribed
625552#ifdef DEBUG_CYCLES
626− , eventSubscribedGetParents = return [_eventSubscription_subscribed $ fanSubscribedParent subscribed]
553+ , eventSubscribedGetParents = return [Some.This $ _eventSubscription_subscribed $ fanSubscribedParent subscribed]
627554 , eventSubscribedHasOwnHeightRef = False
628555 , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
629556#endif
@@ -636,7 +563,7 @@ eventSubscribedSwitch !subscribed = EventSubscribed
636563#ifdef DEBUG_CYCLES
637564 , eventSubscribedGetParents = do
638565 s <- readIORef $ switchSubscribedCurrentParent subscribed
639− return [_eventSubscription_subscribed s]
566+ return [Some.This $ _eventSubscription_subscribed s]
640567 , eventSubscribedHasOwnHeightRef = True
641568 , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
642569#endif
@@ -649,8 +576,8 @@ eventSubscribedCoincidence !subscribed = EventSubscribed
649576#ifdef DEBUG_CYCLES
650577 , eventSubscribedGetParents = do
651578 innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
652− let outerParent = _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
653− innerParents = maybeToList $ innerSubscription
579+ let outerParent = Some.This $ _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
580+ innerParents = maybeToList $ fmap Some.This innerSubscription
654581 return $ outerParent : innerParents
655582 , eventSubscribedHasOwnHeightRef = True
656583 , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
@@ -664,20 +591,20 @@ getEventSubscribedHeight es = readIORef $ eventSubscribedHeightRef es
664591whoCreatedEventSubscribed :: EventSubscribed x -> IO [String]
665592whoCreatedEventSubscribed = eventSubscribedWhoCreated
666593
667−walkInvalidHeightParents :: EventSubscribed x -> IO [EventSubscribed x]
594+walkInvalidHeightParents :: EventSubscribed x -> IO [Some (EventSubscribed x)]
668595walkInvalidHeightParents s0 = do
669− subscribers <- flip execStateT mempty $ ($ s0) $ fix $ \loop s -> do
596+ subscribers <- flip execStateT mempty $ ($ Some.This s0) $ fix $ \loop (Some.This s) -> do
670597 h <- liftIO $ readIORef $ eventSubscribedHeightRef s
671598 when (h == invalidHeight) $ do
672599 when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
673− modify (s :)
600+ modify (Some.This s :)
674601 mapM_ loop =<< liftIO (eventSubscribedGetParents s)
675− forM_ subscribers $ \s -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
602+ forM_ subscribers $ \(Some.This s) -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
676603 return subscribers
677604#endif
678605
679606{-# INLINE subscribeHoldEvent #-}
680−subscribeHoldEvent :: Hold x p -> Subscriber x p -> EventM x (EventSubscription x, Maybe p)
607+subscribeHoldEvent :: CanSubscribe x m => Hold x p -> Subscriber x p -> m (EventSubscription x, Maybe p)
681608subscribeHoldEvent = subscribeAndRead . holdEvent
682609
683610--------------------------------------------------------------------------------
@@ -700,7 +627,7 @@ behaviorPull !p = Behavior $ do
700627 val <- liftIO $ readIORef $ pullValue p
701628 case val of
702629 Just subscribed -> do
703− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
630+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
704631 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
705632 liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
706633 return $ pullSubscribedValue subscribed
@@ -709,7 +636,7 @@ behaviorPull !p = Behavior $ do
709636 wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
710637 parentsRef <- liftIO $ newIORef []
711638 holdInits <- askBehaviorHoldInits
712− a <- liftIO $ runReaderIO (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
639+ a <- liftIO $ runReaderT (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
713640 invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
714641 parents <- liftIO $ readIORef parentsRef
715642 let subscribed = PullSubscribed
@@ -719,7 +646,7 @@ behaviorPull !p = Behavior $ do
719646 , pullSubscribedParents = parents
720647 }
721648 liftIO $ writeIORef (pullValue p) $ Just subscribed
722− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
649+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
723650 return a
724651
725652behaviorDyn :: Patch p => Dyn x p -> Behavior x (PatchTarget p)
@@ -730,8 +657,7 @@ readHoldTracked :: Hold x p -> BehaviorM x (PatchTarget p)
730657readHoldTracked h = do
731658 result <- liftIO $ readIORef $ holdValue h
732659 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
733− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedHold h)) :))
734− liftIO $ touch h -- Otherwise, if this gets inlined enough, the hold's parent reference may get collected
660+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedHold h) :))
735661 return result
736662
737663{-# INLINABLE readBehaviorUntracked #-}
@@ -744,46 +670,42 @@ readBehaviorUntracked b = do
744670-- Dynamic
745671--------------------------------------------------------------------------------
746672
747−type DynamicS x p = Dynamic x (PatchTarget p) p
748−
749−data Dynamic x target p = Dynamic
750− { dynamicCurrent :: !(Behavior x target)
751− , dynamicUpdated :: Event x p -- This must be lazy; see the comment on holdEvent --TODO: Would this let us eliminate `Dyn`?
673+data Dynamic x p = Dynamic
674+ { dynamicCurrent :: !(Behavior x (PatchTarget p))
675+ , dynamicUpdated :: !(Event x p)
752676 }
753677
754−deriving instance (HasSpiderTimeline x) => Functor (Dynamic x target)
755−
756−
757−
758−
759−dynamicHold :: Hold x p -> DynamicS x p
678+dynamicHold :: HasSpiderTimeline x => Hold x p -> Dynamic x p
760679dynamicHold !h = Dynamic
761680 { dynamicCurrent = behaviorHold h
762681 , dynamicUpdated = eventHold h
763682 }
764683
765−dynamicHoldIdentity :: Hold x (Identity a) -> DynamicS x (Identity a)
684+dynamicHoldIdentity :: HasSpiderTimeline x => Hold x (Identity a) -> Dynamic x (Identity a)
766685dynamicHoldIdentity = dynamicHold
767686
768−dynamicConst :: PatchTarget p -> DynamicS x p
687+dynamicConst :: PatchTarget p -> Dynamic x p
769688dynamicConst !a = Dynamic
770689 { dynamicCurrent = behaviorConst a
771690 , dynamicUpdated = eventNever
772691 }
773692
774−dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> DynamicS x p
693+dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Dynamic x p
775694dynamicDyn !d = Dynamic
776695 { dynamicCurrent = behaviorDyn d
777696 , dynamicUpdated = eventDyn d
778697 }
779698
780−dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> DynamicS x (Identity a)
699+dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> Dynamic x (Identity a)
781700dynamicDynIdentity = dynamicDyn
782701
783702--------------------------------------------------------------------------------
784703-- Combinators
785704--------------------------------------------------------------------------------
786705
706+--TODO: Figure out why certain things are not 'representational', then make them
707+--representational so we can use coerce
708+
787709--type role Hold representational
788710data Hold x p
789711 = Hold { holdValue :: !(IORef (PatchTarget p))
@@ -795,7 +717,9 @@ data Hold x p
795717#endif
796718 }
797719
798−-- | A statically allocated 'SpiderTimeline'
720+-- | A statically allocated 'SpiderTimeline'; this is the only instance of
721+-- 'SpiderTimeline' that can used when using
722+-- -fspecialize-to-spidertimeline-global.
799723data Global
800724
801725{-# NOINLINE globalSpiderTimelineEnv #-}
@@ -804,27 +728,30 @@ globalSpiderTimelineEnv = unsafePerformIO unsafeNewSpiderTimelineEnv
804728
805729-- | Stores all global data relevant to a particular Spider timeline; only one
806730-- 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
811−
812−data SpiderTimelineEnv' x = SpiderTimelineEnv
731+data SpiderTimelineEnv x = SpiderTimelineEnv
813732 { _spiderTimeline_lock :: {-# UNPACK #-} !(MVar ())
814733 , _spiderTimeline_eventEnv :: {-# UNPACK #-} !(EventEnv x)
815734#ifdef DEBUG
816735 , _spiderTimeline_depth :: {-# UNPACK #-} !(IORef Int)
817736#endif
818737 }
819−type role SpiderTimelineEnv' phantom
738+type role SpiderTimelineEnv nominal
820739
821740instance Eq (SpiderTimelineEnv x) where
822741 _ == _ = True -- Since only one exists of each type
823742
824743instance GEq SpiderTimelineEnv where
825− a `geq` b = if _spiderTimeline_lock (unSTE a) == _spiderTimeline_lock (unSTE b)
744+#ifdef EXPERIMENTAL_DEPENDENT_SUM_INSTANCES
745+ geqToEq _ = id
746+ geqUnify (a :: SpiderTimelineEnv a) (b :: SpiderTimelineEnv b) different same = if _spiderTimeline_lock a == _spiderTimeline_lock b
747+ then case unsafeCoerce Refl :: a :~: b of
748+ Refl -> same -- This unsafeCoerce is safe because the same SpiderTimelineEnv can't have two different 'x' arguments
749+ else different
750+#else
751+ a `geq` b = if _spiderTimeline_lock a == _spiderTimeline_lock b
826752 then Just $ unsafeCoerce Refl -- This unsafeCoerce is safe because the same SpiderTimelineEnv can't have two different 'x' arguments
827753 else Nothing
754+#endif
828755
829756data EventEnv x
830757 = EventEnv { eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
@@ -832,9 +759,8 @@ data EventEnv x
832759 , eventEnvDynInits :: !(IORef [SomeDynInit x])
833760 , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
834761 , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
835− , eventEnvClears :: !(IORef [Some Clear]) -- Needed for Subscribe
836− , eventEnvIntClears :: !(IORef [Some IntClear])
837− , eventEnvRootClears :: !(IORef [Some RootClear])
762+ , eventEnvClears :: !(IORef [SomeClear]) -- Needed for Subscribe
763+ , eventEnvRootClears :: !(IORef [SomeRootClear])
838764 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
839765 , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
840766 , eventEnvDelayedMerges :: !(IORef (IntMap [EventM x ()]))
@@ -845,7 +771,7 @@ runEventM :: EventM x a -> IO a
845771runEventM = unEventM
846772
847773asksEventEnv :: forall x a. HasSpiderTimeline x => (EventEnv x -> a) -> EventM x a
848−asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (unSTE (spiderTimeline :: SpiderTimelineEnv x))
774+asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (spiderTimeline :: SpiderTimelineEnv x)
849775
850776class MonadIO m => Defer a m where
851777 getDeferralQueue :: m (IORef [a])
@@ -894,7 +820,11 @@ instance HasSpiderTimeline x => HasCurrentHeight x (EventM x) where
894820 delayedRef <- asksEventEnv eventEnvDelayedMerges
895821 liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [subscribed]
896822
823+#ifdef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
824+class x ~ Global => HasSpiderTimeline x where
825+#else
897826class HasSpiderTimeline x where
827+#endif
898828 -- | Retrieve the current SpiderTimelineEnv
899829 spiderTimeline :: SpiderTimelineEnv x
900830
@@ -906,29 +836,21 @@ putCurrentHeight h = do
906836 heightRef <- asksEventEnv eventEnvCurrentHeight
907837 liftIO $ writeIORef heightRef $! h
908838
909−instance HasSpiderTimeline x => Defer (Some Clear) (EventM x) where
839+instance HasSpiderTimeline x => Defer SomeClear (EventM x) where
910840 {-# INLINE getDeferralQueue #-}
911841 getDeferralQueue = asksEventEnv eventEnvClears
912842
913843{-# INLINE scheduleClear #-}
914−scheduleClear :: Defer (Some Clear) m => IORef (Maybe a) -> m ()
915−scheduleClear r = defer $ Some $ Clear r
844+scheduleClear :: Defer SomeClear m => IORef (Maybe a) -> m ()
845+scheduleClear r = defer $ SomeClear r
916846
917−instance HasSpiderTimeline x => Defer (Some IntClear) (EventM x) where
918− {-# INLINE getDeferralQueue #-}
919− getDeferralQueue = asksEventEnv eventEnvIntClears
920−
921−{-# INLINE scheduleIntClear #-}
922−scheduleIntClear :: Defer (Some IntClear) m => IORef (IntMap a) -> m ()
923−scheduleIntClear r = defer $ Some $ IntClear r
924−
925−instance HasSpiderTimeline x => Defer (Some RootClear) (EventM x) where
847+instance HasSpiderTimeline x => Defer SomeRootClear (EventM x) where
926848 {-# INLINE getDeferralQueue #-}
927849 getDeferralQueue = asksEventEnv eventEnvRootClears
928850
929851{-# INLINE scheduleRootClear #-}
930−scheduleRootClear :: Defer (Some RootClear) m => IORef (DMap k Identity) -> m ()
931−scheduleRootClear r = defer $ Some $ RootClear r
852+scheduleRootClear :: Defer SomeRootClear m => IORef (DMap k Identity) -> m ()
853+scheduleRootClear r = defer $ SomeRootClear r
932854
933855instance HasSpiderTimeline x => Defer (SomeResetCoincidence x) (EventM x) where
934856 {-# INLINE getDeferralQueue #-}
@@ -957,7 +879,7 @@ hold v0 e = do
957879 return h
958880
959881{-# INLINE getHoldEventSubscription #-}
960−getHoldEventSubscription :: forall p x. (HasSpiderTimeline x, Patch p) => Hold x p -> EventM x (EventSubscription x)
882+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)
961883getHoldEventSubscription h = do
962884 ep <- liftIO $ readIORef $ holdParent h
963885 case ep of
@@ -983,9 +905,9 @@ getHoldEventSubscription h = do
983905
984906type BehaviorEnv x = (Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]), IORef [SomeHoldInit x])
985907
908+--type role BehaviorM representational
986909-- BehaviorM can sample behaviors
987−newtype BehaviorM x a = BehaviorM { unBehaviorM :: ReaderIO (BehaviorEnv x) a }
988− deriving (Functor, Applicative, MonadIO, MonadFix, MonadReader (BehaviorEnv x))
910+newtype BehaviorM x a = BehaviorM { unBehaviorM :: ReaderT (BehaviorEnv x) IO a } deriving (Functor, Applicative, MonadIO, MonadFix)
989911
990912instance Monad (BehaviorM x) where
991913 {-# INLINE (>>=) #-}
@@ -994,16 +916,14 @@ instance Monad (BehaviorM x) where
994916 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
995917 {-# INLINE return #-}
996918 return x = BehaviorM $ return x
997−#if !MIN_VERSION_base(4,13,0)
998919 {-# INLINE fail #-}
999920 fail s = BehaviorM $ fail s
1000−#endif
1001921
1002922data BehaviorSubscribed x a
1003923 = forall p. BehaviorSubscribedHold (Hold x p)
1004924 | BehaviorSubscribedPull (PullSubscribed x a)
1005925
1006−newtype SomeBehaviorSubscribed x = SomeBehaviorSubscribed (Some (BehaviorSubscribed x))
926+data SomeBehaviorSubscribed x = forall a. SomeBehaviorSubscribed (BehaviorSubscribed x a)
1007927
1008928--type role PullSubscribed representational
1009929data PullSubscribed x a
@@ -1038,7 +958,7 @@ data RootSubscribed x a = forall k. GCompare k => RootSubscribed
1038958#endif
1039959 }
1040960
1041−data Root x k
961+data Root x (k :: * -> *)
1042962 = Root { rootOccurrence :: !(IORef (DMap k Identity)) -- The currently-firing occurrence of this event
1043963 , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
1044964 , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
@@ -1057,7 +977,22 @@ data SomeMergeUpdate x = SomeMergeUpdate
1057977newtype SomeMergeInit x = SomeMergeInit { unSomeMergeInit :: EventM x () }
1058978
1059979-- EventM can do everything BehaviorM can, plus create holds
1060−newtype EventM x a = EventM { unEventM :: IO a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix, MonadException, MonadAsyncException)
980+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
981+
982+newtype ComputeM x a = ComputeM (ReaderT (IORef [SomeHoldInit x], IORef [SomeDynInit x]) IO a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
983+
984+instance Defer (SomeHoldInit x) (ComputeM x) where
985+ getDeferralQueue = ComputeM $ asks fst
986+
987+instance Defer (SomeDynInit x) (ComputeM x) where
988+ getDeferralQueue = ComputeM $ asks snd
989+
990+{-# INLINABLE runComputeM #-}
991+runComputeM :: (Defer (SomeHoldInit x) m, Defer (SomeDynInit x) m) => ComputeM x a -> m a
992+runComputeM (ComputeM a) = do
993+ holds <- getDeferralQueue
994+ dyns <- getDeferralQueue
995+ liftIO $ runReaderT a (holds, dyns)
1061996
1062997newtype MergeSubscribedParent x a = MergeSubscribedParent { unMergeSubscribedParent :: EventSubscription x }
1063998
@@ -1082,8 +1017,7 @@ heightBagFromList :: [Height] -> HeightBag
10821017heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
10831018
10841019heightBagAdd :: Height -> HeightBag -> HeightBag
1085−heightBagAdd (Height h) (HeightBag s c) = heightBagVerify $ HeightBag (succ s) $
1086− IntMap.insertWithKey (\_ _ old -> succ old) h 0 c
1020+heightBagAdd (Height h) (HeightBag s c) = heightBagVerify $ HeightBag (succ s) $ IntMap.insertWithKey (\_ _ old -> succ old) h 0 c
10871021
10881022heightBagRemove :: Height -> HeightBag -> HeightBag
10891023heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.lookup h c of
@@ -1092,13 +1026,6 @@ heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.loo
10921026 0 -> IntMap.delete h c
10931027 _ -> IntMap.insert h (pred old) c
10941028
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
1100−
1101−
11021029heightBagMax :: HeightBag -> Height
11031030heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
11041031 Just ((h, _), _) -> Height h
@@ -1116,25 +1043,25 @@ heightBagVerify b@(HeightBag s c) = if
11161043heightBagVerify = id
11171044#endif
11181045
1119−data FanSubscribedChildren x k v a = FanSubscribedChildren
1120− { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x (v a)))
1121− , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k v)
1122− , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k v)))
1046+data FanSubscribedChildren (x :: *) k a = FanSubscribedChildren
1047+ { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x a))
1048+ , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k)
1049+ , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k)))
11231050 }
11241051
1125−data FanSubscribed x k v
1126− = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
1127− , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k v)))
1128− , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren x k v))) -- This DMap should never be empty
1052+data FanSubscribed (x :: *) k
1053+ = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
1054+ , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k Identity)))
1055+ , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren x k))) -- This DMap should never be empty
11291056 , fanSubscribedParent :: !(EventSubscription x)
11301057#ifdef DEBUG_NODEIDS
11311058 , fanSubscribedNodeId :: Int
11321059#endif
11331060 }
11341061
1135−data Fan x k v
1136− = Fan { fanParent :: !(Event x (DMap k v))
1137− , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
1062+data Fan x k
1063+ = Fan { fanParent :: !(Event x (DMap k Identity))
1064+ , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
11381065 }
11391066
11401067data SwitchSubscribed x a
@@ -1188,35 +1115,20 @@ newInvalidatorSwitch subd = return $! InvalidatorSwitch subd
11881115newInvalidatorPull :: Pull x a -> IO (Invalidator x)
11891116newInvalidatorPull p = return $! InvalidatorPull p
11901117
1191−instance HasSpiderTimeline x => Filterable (Event x) where
1192− mapMaybe f = push $ return . f
1118+instance HasSpiderTimeline x => FunctorMaybe (Event x) where
1119+ fmapMaybe f = push $ return . f
11931120
11941121instance HasSpiderTimeline x => Align (Event x) where
11951122 nil = eventNever
1196−#if MIN_VERSION_these(0, 8, 0)
1197−instance HasSpiderTimeline x => Semialign (Event x) where
1198−#endif
1199− align ea eb = mapMaybe dmapToThese $ mergeG coerce $ dynamicConst $
1200− DMap.fromDistinctAscList [LeftTag :=> ea, RightTag :=> eb]
1201−
1202−#ifdef MIN_VERSION_semialign
1203−#if MIN_VERSION_semialign(1,1,0)
1204−instance HasSpiderTimeline x => Zip (Event x) where
1205−#endif
1206− zip x y = mapMaybe justThese $ align x y
1207−#endif
1208−
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)
1123+ align ea eb = fmapMaybe dmapToThese $ merge $ dynamicConst $ DMap.fromList [LeftTag :=> ea, RightTag :=> eb]
12121124
1213−newtype Dyn (x :: Type) p = Dyn { unDyn :: IORef (DynType x p) }
1125+newtype Dyn x p = Dyn { unDyn :: IORef (Either (BehaviorM x (PatchTarget p), Event x p) (Hold x p)) }
12141126
1215−newMapDyn :: HasSpiderTimeline x => (a -> b) -> DynamicS x (Identity a) -> DynamicS x (Identity b)
1127+newMapDyn :: HasSpiderTimeline x => (a -> b) -> Dynamic x (Identity a) -> Dynamic x (Identity b)
12161128newMapDyn f d = dynamicDynIdentity $ unsafeBuildDynamic (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
12171129
12181130--TODO: Avoid the duplication between this and R.zipDynWith
1219−zipDynWith :: HasSpiderTimeline x => (a -> b -> c) -> DynamicS x (Identity a) -> DynamicS x (Identity b) -> DynamicS x (Identity c)
1131+zipDynWith :: HasSpiderTimeline x => (a -> b -> c) -> Dynamic x (Identity a) -> Dynamic x (Identity b) -> Dynamic x (Identity c)
12201132zipDynWith f da db =
12211133 let eab = align (dynamicUpdated da) (dynamicUpdated db)
12221134 ec = flip push eab $ \o -> do
@@ -1231,20 +1143,24 @@ zipDynWith f da db =
12311143 return $ Just $ Identity $ f a b
12321144 in dynamicDynIdentity $ unsafeBuildDynamic (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
12331145
1234−buildDynamic :: (Defer (SomeDynInit x) m, Patch p) => EventM x (PatchTarget p) -> Event x p -> m (Dyn x p)
1146+buildDynamic :: (Defer (SomeDynInit x) m, Patch p) => BehaviorM x (PatchTarget p) -> Event x p -> m (Dyn x p)
12351147buildDynamic readV0 v' = do
1236− result <- liftIO $ newIORef $ BuildDyn (readV0, v')
1148+ result <- liftIO $ newIORef $ Left (readV0, v')
12371149 let !d = Dyn result
12381150 defer $ SomeDynInit d
12391151 return d
12401152
12411153unsafeBuildDynamic :: BehaviorM x (PatchTarget p) -> Event x p -> Dyn x p
1242−unsafeBuildDynamic readV0 v' =
1243− Dyn $ unsafePerformIO $ newIORef $ UnsafeDyn (readV0, v')
1154+unsafeBuildDynamic readV0 v' = Dyn $ unsafeNewIORef x $ Left x
1155+ where x = (readV0, v')
12441156
12451157-- ResultM can read behaviors and events
12461158type ResultM = EventM
12471159
1160+{-# NOINLINE unsafeNewIORef #-}
1161+unsafeNewIORef :: a -> b -> IORef b
1162+unsafeNewIORef _ b = unsafePerformIO $ newIORef b
1163+
12481164instance HasSpiderTimeline x => Functor (Event x) where
12491165 fmap f = push $ return . Just . f
12501166
@@ -1257,42 +1173,33 @@ push f e = cacheEvent (pushCheap f e)
12571173
12581174{-# INLINABLE pull #-}
12591175pull :: BehaviorM x a -> Behavior x a
1260−pull a = unsafePerformIO $ do
1261− ref <- newIORef Nothing
1262−#ifdef DEBUG_NODEIDS
1263− nid <- newNodeId
1264−#endif
1265− pure $ behaviorPull $ Pull
1266− { pullCompute = a
1267− , pullValue = ref
1176+pull a = behaviorPull $ Pull
1177+ { pullCompute = a
1178+ , pullValue = unsafeNewIORef a Nothing
12681179#ifdef DEBUG_NODEIDS
1269− , pullNodeId = nid
1180+ , pullNodeId = unsafeNodeId a
12701181#endif
1271− }
1182+ }
12721183
12731184{-# INLINABLE switch #-}
12741185switch :: HasSpiderTimeline x => Behavior x (Event x a) -> Event x a
1275−switch a = unsafePerformIO $ do
1276− ref <- newIORef Nothing
1277− pure $ eventSwitch $ Switch
1278− { switchParent = a
1279− , switchSubscribed = ref
1280− }
1186+switch a = eventSwitch $ Switch
1187+ { switchParent = a
1188+ , switchSubscribed = unsafeNewIORef a Nothing
1189+ }
12811190
12821191coincidence :: HasSpiderTimeline x => Event x (Event x a) -> Event x a
1283−coincidence a = unsafePerformIO $ do
1284− ref <- newIORef Nothing
1285− pure $ eventCoincidence $ Coincidence
1286− { coincidenceParent = a
1287− , coincidenceSubscribed = ref
1288− }
1192+coincidence a = eventCoincidence $ Coincidence
1193+ { coincidenceParent = a
1194+ , coincidenceSubscribed = unsafeNewIORef a Nothing
1195+ }
12891196
12901197-- Propagate the given event occurrence; before cleaning up, run the given action, which may read the state of events and behaviors
12911198run :: forall x b. HasSpiderTimeline x => [DSum (RootTrigger x) Identity] -> ResultM x b -> SpiderHost x b
12921199run roots after = do
12931200 tracePropagate (Proxy :: Proxy x) $ "Running an event frame with " <> show (length roots) <> " events"
1294− let t = spiderTimeline :: SpiderTimelineEnv x
1295− result <- SpiderHost $ withMVar (_spiderTimeline_lock (unSTE t)) $ \_ -> unSpiderHost $ runFrame $ do
1201+ t <- SpiderHost ask
1202+ result <- SpiderHost $ lift $ withMVar (_spiderTimeline_lock t) $ \_ -> flip runReaderT t $ unSpiderHost $ runFrame $ do
12961203 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
12971204 occBefore <- liftIO $ do
12981205 occBefore <- readIORef occRef
@@ -1330,11 +1237,9 @@ scheduleMerge' initialHeight heightRef a = scheduleMerge initialHeight $ do
13301237 GT -> scheduleMerge' height heightRef a -- The height has been increased (by a coincidence event; TODO: is this the only way?)
13311238 EQ -> a
13321239
1333−newtype Clear a = Clear (IORef (Maybe a))
1240+data SomeClear = forall a. SomeClear (IORef (Maybe a))
13341241
1335−newtype IntClear a = IntClear (IORef (IntMap a))
1336−
1337−newtype RootClear k = RootClear (IORef (DMap k Identity))
1242+data SomeRootClear = forall k. SomeRootClear (IORef (DMap k Identity))
13381243
13391244data SomeAssignment x = forall a. SomeAssignment {-# UNPACK #-} !(IORef a) {-# UNPACK #-} !(IORef [Weak (Invalidator x)]) a
13401245
@@ -1346,110 +1251,55 @@ mkWeakPtrWithDebug x debugNote = do
13461251 x' <- evaluate x
13471252 mkWeakPtr x' $
13481253 if debugFinalize
1349− then Just $ debugStrLn $ "finalizing: " ++ debugNote
1254+ then Just $ putStrLn $ "finalizing: " ++ debugNote
13501255 else Nothing
13511256
13521257type WeakList a = [Weak a]
13531258
1354−type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
1355−
1356−
1357−
1358−
1359−#ifdef DEBUG
1360−
1361−debugSubscriber :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> IO (Subscriber x a)
1362−debugSubscriber description = return . debugSubscriber' description
1363−
1364−debugSubscriber' :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> Subscriber x a
1365−debugSubscriber' description subscribed = Subscriber
1366− {
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"
1378− }
1379−
1380−
13811259{-# INLINE withIncreasedDepth #-}
1382−withIncreasedDepth :: forall proxy x m a. CanTrace x m => proxy x -> m a -> m a
1383−withIncreasedDepth _ a = do
1384− liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) succ
1260+#ifdef DEBUG
1261+withIncreasedDepth :: CanTrace x m => m a -> m a
1262+withIncreasedDepth a = do
1263+ spiderTimeline <- askSpiderTimelineEnv
1264+ liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) succ
13851265 result <- a
1386− liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) pred
1266+ liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) pred
13871267 return result
1388−
1389−{-# INLINE tracePropagate #-}
1390−tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1391−tracePropagate p = when debugPropagate . trace p
1392−
1393−{-# INLINE traceInvalidate #-}
1394−traceInvalidate :: String -> IO ()
1395−traceInvalidate = when debugInvalidate . liftIO . debugStrLn
1396−
1397−{-# INLINE traceInvalidateHeight #-}
1398−traceInvalidateHeight :: String -> IO ()
1399−traceInvalidateHeight = when debugInvalidateHeight . liftIO . debugStrLn
1400−
1401−{-# INLINE trace #-}
1402−trace :: (CanTrace x m) => proxy x -> String -> m ()
1403−trace p message = traceM p $ return message
1404−
1405−{-# INLINE traceM #-}
1406−traceM :: forall x proxy m. (CanTrace x m) => proxy x -> m String -> m ()
1407−traceM _ getMessage = do
1408− message <- getMessage
1409− d <- liftIO $ readIORef $ _spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1410− liftIO $ debugStrLn $ replicate d ' ' <> message
1411−
14121268#else
1269+withIncreasedDepth :: m a -> m a
1270+withIncreasedDepth = id
1271+#endif
14131272
1414−{-# INLINE withIncreasedDepth #-}
1415−withIncreasedDepth :: proxy x -> m a -> m a
1416−withIncreasedDepth _ = id
1273+type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
14171274
14181275{-# INLINE tracePropagate #-}
14191276tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1420−tracePropagate _ _ = return ()
1277+tracePropagate p = traceWhen p debugPropagate
14211278
14221279{-# INLINE traceInvalidate #-}
14231280traceInvalidate :: String -> IO ()
1424−traceInvalidate _ = return ()
1425−
1426−{-# INLINE traceInvalidateHeight #-}
1427−traceInvalidateHeight :: String -> IO ()
1428−traceInvalidateHeight _ = return ()
1429−
1430−{-# INLINE debugSubscriber #-}
1431−debugSubscriber :: String -> Subscriber x a -> IO (Subscriber x a)
1432−debugSubscriber _ = return
1433−
1434−{-# INLINE debugSubscriber' #-}
1435−debugSubscriber' :: String -> Subscriber x a -> Subscriber x a
1436−debugSubscriber' _ = id
1281+traceInvalidate = when debugInvalidate . liftIO . putStrLn
14371282
1283+{-# INLINE traceWhen #-}
1284+traceWhen :: (CanTrace x m) => proxy x -> Bool -> String -> m ()
1285+traceWhen p b message = traceMWhen p b $ return message
14381286
1439−
1440−{-# INLINE trace #-}
1441−trace :: (CanTrace x m) => proxy x -> String -> m ()
1442−trace _ _ = return ()
1443−
1444−{-# INLINE traceM #-}
1445−traceM :: (CanTrace x m) => proxy x -> m String -> m ()
1446−traceM _ _ = return ()
1447−
1287+{-# INLINE traceMWhen #-}
1288+traceMWhen :: (CanTrace x m) => proxy x -> Bool -> m String -> m ()
1289+traceMWhen _ b getMessage = when b $ do
1290+ message <- getMessage
1291+#ifdef DEBUG
1292+ spiderTimeline <- askSpiderTimelineEnv
1293+ d <- liftIO $ readIORef $ _spiderTimeline_depth spiderTimeline
1294+#else
1295+ let d = 0
14481296#endif
1297+ liftIO $ putStrLn $ replicate d ' ' <> message
14491298
14501299whoCreatedIORef :: IORef a -> IO [String]
14511300whoCreatedIORef (IORef a) = whoCreated $! a
14521301
1302+#ifdef DEBUG_CYCLES
14531303groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
14541304groupByHead = \case
14551305 [] -> []
@@ -1460,54 +1310,20 @@ groupByHead = \case
14601310 | otherwise -> (x, xs :| []) : l
14611311
14621312listsToForest :: Eq a => [[a]] -> Forest a
1463−listsToForest lists = buildForest <$> groupByHead (mapMaybe nonEmpty lists)
1464− where buildForest (a, lists') = Node a $ listsToForest $ toList lists'
1465−
1466−showStacks :: [[String]] -> String
1467−showStacks = drawForest . listsToForest . fmap (filterStack "Reflex.Spider.Internal")
1468−
1469−filterStack :: String -> [String] -> [String]
1470−#ifdef DEBUG_HIDE_INTERNALS
1471−filterStack prefix = filter (not . (prefix `isPrefixOf`))
1472−#else
1473−filterStack prefix = id
1313+listsToForest l = fmap (\(a, l') -> Node a $ listsToForest $ toList l') $ groupByHead $ catMaybes $ fmap nonEmpty l
14741314#endif
14751315
1476−#ifdef DEBUG_CYCLES
1477−
1478−data EventLoopException = EventLoopException [[String]]
1479−instance Exception EventLoopException
1480−
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
1485−
1486−#else
1487−
1488−data EventLoopException = EventLoopException
1489−instance Exception EventLoopException
1490−
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"
1494−
1495−#endif
1496−
1497−
14981316{-# INLINE propagateSubscriberHold #-}
14991317propagateSubscriberHold :: forall x p. (HasSpiderTimeline x, Patch p) => Hold x p -> p -> EventM x ()
15001318propagateSubscriberHold h a = do
1501− {-# SCC "trace" #-} when debugPropagate $ traceM (Proxy :: Proxy x) $ liftIO $ do
1319+ {-# SCC "trace" #-} traceMWhen (Proxy :: Proxy x) debugPropagate $ liftIO $ do
15021320 invalidators <- liftIO $ readIORef $ holdInvalidators h
15031321 return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1504−
15051322 v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
15061323 case {-# SCC "apply" #-} apply a v of
15071324 Nothing -> return ()
15081325 Just v' -> do
1509− {-# SCC "trace2" #-} withIncreasedDepth (Proxy :: Proxy x) $
1510− tracePropagate (Proxy :: Proxy x) ("propagateSubscriberHold: assigning Hold" <> showNodeId h)
1326+ {-# SCC "trace2" #-} withIncreasedDepth $ tracePropagate (Proxy :: Proxy x) $ "propagateSubscriberHold: assigning Hold" <> showNodeId h
15111327 vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
15121328 iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
15131329 defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
@@ -1515,25 +1331,25 @@ propagateSubscriberHold h a = do
15151331data SomeResetCoincidence x = forall a. SomeResetCoincidence !(EventSubscription x) !(Maybe (CoincidenceSubscribed x a)) -- The CoincidenceSubscriber will be present only if heights need to be reset
15161332
15171333runBehaviorM :: BehaviorM x a -> Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]) -> IORef [SomeHoldInit x] -> IO a
1518−runBehaviorM a mwi holdInits = runReaderIO (unBehaviorM a) (mwi, holdInits)
1334+runBehaviorM a mwi holdInits = runReaderT (unBehaviorM a) (mwi, holdInits)
15191335
15201336askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
15211337askInvalidator = do
1522− (!m, _) <- ask
1338+ (!m, _) <- BehaviorM ask
15231339 case m of
15241340 Nothing -> return Nothing
15251341 Just (!wi, _) -> return $ Just wi
15261342
15271343askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
15281344askParentsRef = do
1529− (!m, _) <- ask
1345+ (!m, _) <- BehaviorM ask
15301346 case m of
15311347 Nothing -> return Nothing
15321348 Just (_, !p) -> return $ Just p
15331349
15341350askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
15351351askBehaviorHoldInits = do
1536− (_, !his) <- ask
1352+ (_, !his) <- BehaviorM ask
15371353 return his
15381354
15391355{-# INLINE getDynHold #-}
@@ -1541,27 +1357,30 @@ getDynHold :: (Defer (SomeHoldInit x) m, Patch p) => Dyn x p -> m (Hold x p)
15411357getDynHold d = do
15421358 mh <- liftIO $ readIORef $ unDyn d
15431359 case mh of
1544− HoldDyn h -> return h
1545− UnsafeDyn (readV0, v') -> do
1360+ Right h -> return h
1361+ Left (readV0, v') -> do
15461362 holdInits <- getDeferralQueue
15471363 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1548− hold' v0 v'
1549− BuildDyn (readV0, v') -> do
1550− v0 <- liftIO $ runEventM readV0
1551− hold' v0 v'
1552− where
1553− hold' v0 v' = do
15541364 h <- hold v0 v'
1555− liftIO $ writeIORef (unDyn d) $ HoldDyn h
1365+ liftIO $ writeIORef (unDyn d) $ Right h
15561366 return h
15571367
1558−
15591368-- Always refers to 0
15601369{-# NOINLINE zeroRef #-}
15611370zeroRef :: IORef Height
15621371zeroRef = unsafePerformIO $ newIORef zeroHeight
15631372
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)
1373+type CanSubscribe x m =
1374+ ( HasSpiderTimeline x
1375+ , HasCurrentHeight x m
1376+ , Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m -- The things we need to lazily initialize state
1377+ , Defer SomeClear m -- Wiping out event firings
1378+ , Defer (SomeAssignment x) m -- Updating state
1379+ , Defer (SomeResetCoincidence x) m
1380+ , m ~ EventM x
1381+ )
1382+
1383+getRootSubscribed :: GCompare k => k a -> Root x k -> Subscriber x a -> IO (WeakBagTicket, RootSubscribed x a, Maybe a)
15651384getRootSubscribed k r sub = do
15661385 mSubscribed <- readIORef $ rootSubscribed r
15671386 let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
@@ -1575,14 +1394,9 @@ getRootSubscribed k r sub = do
15751394 let !cached = rootSubscribed r
15761395 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
15771396 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1578−
1579− tracePropagate (Proxy::Proxy x) $ "getRootSubscribed: calling rootInit"
1580−
1397+ when debugPropagate $ putStrLn $ "getRootSubscribed: calling rootInit"
15811398 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
15821399 writeIORef uninitRef $! uninit
1583−#ifdef DEBUG_NODEIDS
1584− nid <- newNodeId
1585−#endif
15861400 let !subscribed = RootSubscribed
15871401 { rootSubscribedKey = k
15881402 , rootSubscribedCachedSubscribed = cached
@@ -1591,7 +1405,7 @@ getRootSubscribed k r sub = do
15911405 , rootSubscribedUninit = uninit
15921406 , rootSubscribedWeakSelf = weakSelf
15931407#ifdef DEBUG_NODEIDS
1594− , rootSubscribedNodeId = nid
1408+ , rootSubscribedNodeId = unsafeNodeId (k, r, subs)
15951409#endif
15961410 }
15971411 -- If we die at the same moment that all our children die, they will
@@ -1621,90 +1435,8 @@ cleanupRootSubscribed self@RootSubscribed { rootSubscribedKey = k, rootSubscribe
16211435subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO WeakBagTicket
16221436subscribeRootSubscribed subscribed sub = WeakBag.insert sub (rootSubscribedSubscribers subscribed) (rootSubscribedWeakSelf subscribed) cleanupRootSubscribed
16231437
1624−newtype EventSelectorInt x a = EventSelectorInt { selectInt :: Int -> Event x a }
1625−
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
1632−#endif
1633− }
1634−
1635−newFanInt :: IO (FanInt x a)
1636−newFanInt = do
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
1642−#endif
1643− return $ FanInt
1644− { _fanInt_subscribers = subscribers
1645− , _fanInt_subscriptionRef = subscriptionRef
1646− , _fanInt_occRef = occRef
1647−#ifdef DEBUG_NODEIDS
1648− , _fanInt_nodeId = nodeId
1649−#endif
1650− }
1651−
1652−fanInt :: HasSpiderTimeline x => Event x (IntMap a) -> EventSelectorInt x a
1653−fanInt p = unsafePerformIO $ do
1654− self <- newFanInt
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
1674− }
1675− liftIO $ do
1676− writeIORef (_fanInt_subscriptionRef self) subscription
1677− writeIORef (_fanInt_occRef self) $ fromMaybe IntMap.empty parentOcc
1678− scheduleIntClear $ _fanInt_occRef self
1679− liftIO $ do
1680− b <- FastMutableIntMap.lookup (_fanInt_subscribers self) k >>= \case
1681− Nothing -> do
1682− b <- FastWeakBag.empty
1683− FastMutableIntMap.insert (_fanInt_subscribers self) k b
1684− return b
1685− Just b -> return b
1686− ticket <- liftIO $ FastWeakBag.insert sub b
1687− currentOcc <- readIORef (_fanInt_occRef self)
1688−
1689− subscribed <- fanIntSubscribed ticket self
1690− return (EventSubscription (FastWeakBag.remove ticket) subscribed, IntMap.lookup k currentOcc)
1691−
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)
1698−#ifdef DEBUG_CYCLES
1699− , eventSubscribedGetParents = return [subscribedParent]
1700− , eventSubscribedHasOwnHeightRef = False
1701− , eventSubscribedWhoCreated = whoCreatedIORef $ _fanInt_subscriptionRef self
1702−#endif
1703− }
1704−
1705−
17061438{-# INLINABLE getFanSubscribed #-}
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))
1439+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)
17081440getFanSubscribed k f sub = do
17091441 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
17101442 case mSubscribed of
@@ -1722,16 +1454,13 @@ getFanSubscribed k f sub = do
17221454 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
17231455 occRef <- liftIO $ newIORef parentOcc
17241456 when (isJust parentOcc) $ scheduleClear occRef
1725−#ifdef DEBUG_NODEIDS
1726− nid <- liftIO newNodeId
1727−#endif
17281457 let subscribed = FanSubscribed
17291458 { fanSubscribedCachedSubscribed = fanSubscribed f
17301459 , fanSubscribedOccurrence = occRef
17311460 , fanSubscribedParent = subscription
17321461 , fanSubscribedSubscribers = subscribersRef
17331462#ifdef DEBUG_NODEIDS
1734− , fanSubscribedNodeId = nid
1463+ , fanSubscribedNodeId = unsafeNodeId f
17351464#endif
17361465 }
17371466 let !self = (k, subscribed)
@@ -1741,7 +1470,7 @@ getFanSubscribed k f sub = do
17411470 liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
17421471 return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
17431472
1744−cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k v) -> IO ()
1473+cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k) -> IO ()
17451474cleanupFanSubscribed (k, subscribed) = do
17461475 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
17471476 let reducedSubscribers = DMap.delete k subscribers
@@ -1753,7 +1482,7 @@ cleanupFanSubscribed (k, subscribed) = do
17531482 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
17541483
17551484{-# INLINE subscribeFanSubscribed #-}
1756−subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed x k v -> Subscriber x (v a) -> IO WeakBagTicket
1485+subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed x k -> Subscriber x a -> IO WeakBagTicket
17571486subscribeFanSubscribed k subscribed sub = do
17581487 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
17591488 case DMap.lookup k subscribers of
@@ -1766,7 +1495,7 @@ subscribeFanSubscribed k subscribed sub = do
17661495 Just (FanSubscribedChildren list _ weakSelf) -> {-# SCC "hitSubscribeFanSubscribed" #-} WeakBag.insert sub list weakSelf cleanupFanSubscribed
17671496
17681497{-# INLINABLE getSwitchSubscribed #-}
1769−getSwitchSubscribed :: HasSpiderTimeline x => Switch x a -> Subscriber x a -> EventM x (WeakBagTicket, SwitchSubscribed x a, Maybe a)
1498+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)
17701499getSwitchSubscribed s sub = do
17711500 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
17721501 case mSubscribed of
@@ -1791,9 +1520,6 @@ getSwitchSubscribed s sub = do
17911520 when (isJust parentOcc) $ scheduleClear occRef
17921521 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
17931522 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupSwitchSubscribed
1794−#ifdef DEBUG_NODEIDS
1795− nid <- liftIO newNodeId
1796−#endif
17971523 let !subscribed = SwitchSubscribed
17981524 { switchSubscribedCachedSubscribed = switchSubscribed s
17991525 , switchSubscribedOccurrence = occRef
@@ -1806,7 +1532,7 @@ getSwitchSubscribed s sub = do
18061532 , switchSubscribedCurrentParent = subscriptionRef
18071533 , switchSubscribedWeakSelf = weakSelf
18081534#ifdef DEBUG_NODEIDS
1809− , switchSubscribedNodeId = nid
1535+ , switchSubscribedNodeId = unsafeNodeId s
18101536#endif
18111537 }
18121538 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
@@ -1825,7 +1551,7 @@ subscribeSwitchSubscribed :: SwitchSubscribed x a -> Subscriber x a -> IO WeakBa
18251551subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
18261552
18271553{-# INLINABLE getCoincidenceSubscribed #-}
1828−getCoincidenceSubscribed :: forall x a. HasSpiderTimeline x => Coincidence x a -> Subscriber x a -> EventM x (WeakBagTicket, CoincidenceSubscribed x a, Maybe a)
1554+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)
18291555getCoincidenceSubscribed c sub = do
18301556 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
18311557 case mSubscribed of
@@ -1851,9 +1577,6 @@ getCoincidenceSubscribed c sub = do
18511577 scheduleClear innerSubdRef
18521578 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
18531579 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupCoincidenceSubscribed
1854−#ifdef DEBUG_NODEIDS
1855− nid <- liftIO newNodeId
1856−#endif
18571580 let subscribed = CoincidenceSubscribed
18581581 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
18591582 , coincidenceSubscribedOccurrence = occRef
@@ -1864,7 +1587,7 @@ getCoincidenceSubscribed c sub = do
18641587 , coincidenceSubscribedInnerParent = innerSubdRef
18651588 , coincidenceSubscribedWeakSelf = weakSelf
18661589#ifdef DEBUG_NODEIDS
1867− , coincidenceSubscribedNodeId = nid
1590+ , coincidenceSubscribedNodeId = unsafeNodeId c
18681591#endif
18691592 }
18701593 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
@@ -1881,72 +1604,57 @@ cleanupCoincidenceSubscribed subscribed = do
18811604subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO WeakBagTicket
18821605subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
18831606
1884−{-# INLINE mergeG #-}
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)
1888−mergeG nt d = cacheEvent (mergeCheap nt d)
1607+{-# INLINE merge #-}
1608+merge :: forall k x. (HasSpiderTimeline x, GCompare k) => Dynamic x (PatchDMap k (Event x)) -> Event x (DMap k Identity)
1609+merge d = cacheEvent (mergeCheap d)
18891610
18901611{-# 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)
1612+mergeWithMove :: forall k x. (HasSpiderTimeline x, GCompare k) => Dynamic x (PatchDMapWithMove k (Event x)) -> Event x (DMap k Identity)
1613+mergeWithMove d = cacheEvent (mergeCheapWithMove d)
18951614
18961615{-# INLINE [1] mergeCheap #-}
1897−mergeCheap
1898− :: forall k x q v. (HasSpiderTimeline x, GCompare k)
1899− => (forall a. q a -> Event x (v a))
1900− -> DynamicS x (PatchDMap k q)
1901− -> Event x (DMap k v)
1902−mergeCheap nt = mergeGCheap' unMergeSubscribedParent getInitialSubscribers updateMe destroy
1616+mergeCheap :: forall k x. (HasSpiderTimeline x, GCompare k) => Dynamic x (PatchDMap k (Event x)) -> Event x (DMap k Identity)
1617+mergeCheap = mergeCheap' getInitialSubscribers updateMe destroy DMap.size
19031618 where
1904− updateMe :: MergeUpdateFunc k v x (PatchDMap k q) (MergeSubscribedParent x)
1619+ updateMe :: MergeUpdateFunc k x (PatchDMap k (Event x)) (MergeSubscribedParent x)
19051620 updateMe subscriber heightBagRef oldParents (PatchDMap p) = do
19061621 let f (subscriptionsToKill, ps) (k :=> ComposeMaybe me) = do
19071622 (mOldSubd, newPs) <- case me of
19081623 Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
19091624 Just e -> do
19101625 let s = subscriber $ return k
1911− subscription@(EventSubscription _ subd) <- subscribe (nt e) s
1626+ subscription@(EventSubscription _ subd) <- subscribe e s
19121627 newParentHeight <- liftIO $ getEventSubscribedHeight subd
19131628 let newParent = MergeSubscribedParent subscription
19141629 liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
19151630 return $ DMap.insertLookupWithKey' (\_ new _ -> new) k newParent ps
19161631 forM_ mOldSubd $ \oldSubd -> do
1917− oldHeight <- liftIO $ getEventSubscribedHeight $
1918− _eventSubscription_subscribed $ unMergeSubscribedParent oldSubd
1919−
1632+ oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $ unMergeSubscribedParent oldSubd
19201633 liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
19211634 return (maybeToList (unMergeSubscribedParent <$> mOldSubd) ++ subscriptionsToKill, newPs)
19221635 foldM f ([], oldParents) $ DMap.toList p
1923−
1924− getInitialSubscribers :: MergeInitFunc k v q x (MergeSubscribedParent x)
1636+ getInitialSubscribers :: MergeInitFunc k x (MergeSubscribedParent x)
19251637 getInitialSubscribers initialParents subscriber = do
19261638 subscribers <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
19271639 let s = subscriber $ return k
1928− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead (nt e) s
1640+ (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead e s
19291641 height <- liftIO $ getEventSubscribedHeight parentSubd
1930− return (fmap (k :=>) parentOcc, height, k :=> MergeSubscribedParent subscription)
1642+ return (fmap (\x -> k :=> Identity x) parentOcc, height, k :=> MergeSubscribedParent subscription)
19311643 return ( DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
19321644 , fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
19331645 , DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
19341646 )
1935−
19361647 destroy :: MergeDestroyFunc k (MergeSubscribedParent x)
19371648 destroy s = forM_ (DMap.toList s) $ \(_ :=> MergeSubscribedParent sub) -> unsubscribe sub
19381649
19391650{-# 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
1651+mergeCheapWithMove :: forall k x. (HasSpiderTimeline x, GCompare k) => Dynamic x (PatchDMapWithMove k (Event x)) -> Event x (DMap k Identity)
1652+mergeCheapWithMove = mergeCheap' getInitialSubscribers updateMe destroy DMap.size
19451653 where
1946− updateMe :: MergeUpdateFunc k v x (PatchDMapWithMove k q) (MergeSubscribedParentWithMove x k)
1654+ updateMe :: MergeUpdateFunc k x (PatchDMapWithMove k (Event x)) (MergeSubscribedParentWithMove x k)
19471655 updateMe subscriber heightBagRef oldParents p = do
19481656 -- Prepare new parents for insertion
1949− let subscribeParent :: forall a. k a -> Event x (v a) -> EventM x (MergeSubscribedParentWithMove x k a)
1657+ let subscribeParent :: forall a. k a -> Event x a -> EventM x (MergeSubscribedParentWithMove x k a)
19501658 subscribeParent k e = do
19511659 keyRef <- liftIO $ newIORef k
19521660 let s = subscriber $ liftIO $ readIORef keyRef
@@ -1955,185 +1663,122 @@ mergeCheapWithMove nt = mergeGCheap' _mergeSubscribedParentWithMove_subscription
19551663 newParentHeight <- getEventSubscribedHeight subd
19561664 modifyIORef' heightBagRef $ heightBagAdd newParentHeight
19571665 return $ MergeSubscribedParentWithMove subscription keyRef
1958− p' <- PatchDMapWithMove.traversePatchDMapWithMoveWithKey (\k q -> subscribeParent k (nt q)) p
1666+ p' <- PatchDMapWithMove.traversePatchDMapWithMoveWithKey subscribeParent p
19591667 -- 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
1668+ let moveOrDelete :: forall a. k a -> PatchDMapWithMove.NodeInfo k (Event x) a -> MergeSubscribedParentWithMove x k a -> Constant (EventM x (Maybe (EventSubscription x))) a
19611669 moveOrDelete _ ni parent = Constant $ case getComposeMaybe $ PatchDMapWithMove._nodeInfo_to ni of
19621670 Nothing -> do
1963− oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $
1964− _mergeSubscribedParentWithMove_subscription parent
1965−
1671+ oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $ _mergeSubscribedParentWithMove_subscription parent
19661672 liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
19671673 return $ Just $ _mergeSubscribedParentWithMove_subscription parent
19681674 Just toKey -> do
19691675 liftIO $ writeIORef (_mergeSubscribedParentWithMove_key parent) $! toKey
19701676 return Nothing
1971− toDelete <- fmap catMaybes $ mapM (\(_ :=> v) -> getConstant v) $ DMap.toList $
1972− DMap.intersectionWithKey moveOrDelete (unPatchDMapWithMove p) oldParents
1973−
1677+ toDelete <- fmap catMaybes $ mapM (\(_ :=> v) -> getConstant v) $ DMap.toList $ DMap.intersectionWithKey moveOrDelete (unPatchDMapWithMove p) oldParents
19741678 return (toDelete, applyAlways p' oldParents)
1975− getInitialSubscribers :: MergeInitFunc k v q x (MergeSubscribedParentWithMove x k)
1679+ getInitialSubscribers :: MergeInitFunc k x (MergeSubscribedParentWithMove x k)
19761680 getInitialSubscribers initialParents subscriber = do
19771681 subscribers <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
19781682 keyRef <- liftIO $ newIORef k
19791683 let s = subscriber $ liftIO $ readIORef keyRef
1980− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead (nt e) s
1684+ (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead e s
19811685 height <- liftIO $ getEventSubscribedHeight parentSubd
1982− return (fmap (k :=>) parentOcc, height, k :=> MergeSubscribedParentWithMove subscription keyRef)
1686+ return (fmap (\x -> k :=> Identity x) parentOcc, height, k :=> MergeSubscribedParentWithMove subscription keyRef)
19831687 return ( DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
19841688 , fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
19851689 , DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
19861690 )
1987−
19881691 destroy :: MergeDestroyFunc k (MergeSubscribedParentWithMove x k)
19891692 destroy s = forM_ (DMap.toList s) $ \(_ :=> MergeSubscribedParentWithMove sub _) -> unsubscribe sub
19901693
1991−type MergeUpdateFunc k v x p s
1992− = (forall a. EventM x (k a) -> Subscriber x (v a))
1694+type MergeUpdateFunc k x p s
1695+ = (forall a. EventM x (k a) -> Subscriber x a)
19931696 -> IORef HeightBag
19941697 -> DMap k s
19951698 -> p
19961699 -> EventM x ([EventSubscription x], DMap k s)
19971700
1998−type MergeGetSubscription x s = forall a. s a -> EventSubscription x
1999−
2000−type MergeInitFunc k v q x s
2001− = DMap k q
2002− -> (forall a. EventM x (k a) -> Subscriber x (v a))
2003− -> EventM x (DMap k v, [Height], DMap k s)
1701+type MergeInitFunc k x s
1702+ = DMap k (Event x)
1703+ -> (forall a. EventM x (k a) -> Subscriber x a)
1704+ -> EventM x (DMap k Identity, [Height], DMap k s)
20041705
20051706type MergeDestroyFunc k s
20061707 = DMap k s
20071708 -> IO ()
20081709
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))
2015− }
2016−
2017−invalidateMergeHeight :: Merge x k v s -> IO ()
2018−invalidateMergeHeight m = invalidateMergeHeight' (_merge_heightRef m) (_merge_sub m)
2019−
2020−invalidateMergeHeight' :: IORef Height -> Subscriber x a -> IO ()
2021−invalidateMergeHeight' heightRef sub = do
2022− oldHeight <- readIORef heightRef
2023− -- If the height used to be valid, it must be invalid now; we should never have *more* heights than we have parents
2024− when (oldHeight /= invalidHeight) $ do
2025− writeIORef heightRef $! invalidHeight
2026− subscriberInvalidateHeight sub oldHeight
2027−
2028−revalidateMergeHeight :: Merge x k v s -> IO ()
2029−revalidateMergeHeight m = do
2030− currentHeight <- readIORef $ _merge_heightRef m
2031−
2032− -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
2033− when (currentHeight == invalidHeight) $ do
2034− heights <- readIORef $ _merge_heightBagRef m
2035− parents <- readIORef $ _merge_parentsRef m
2036− -- When the number of heights in the bag reaches the number of parents, we should have a valid height
2037− case heightBagSize heights `compare` DMap.size parents of
2038− LT -> return ()
2039− EQ -> do
2040− let height = succHeight $ heightBagMax heights
2041− traceInvalidateHeight $ "recalculateSubscriberHeight: height: " <> show height
2042− writeIORef (_merge_heightRef m) $! height
2043− subscriberRecalculateHeight (_merge_sub m) height
2044− GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show (DMap.size parents) <> ") for Merge"
2045−
2046−scheduleMergeSelf :: HasSpiderTimeline x => Merge x k v s -> Height -> EventM x ()
2047−scheduleMergeSelf m height = scheduleMerge' height (_merge_heightRef m) $ do
2048− vals <- liftIO $ readIORef $ _merge_accumRef m
2049− -- Once we're done with this, we can clear it immediately, because if there's a cacheEvent in front of us,
2050− -- it'll handle subsequent subscribers, and if not, we won't get subsequent subscribers
2051− liftIO $ writeIORef (_merge_accumRef m) $! DMap.empty
2052− --TODO: Assert that m is not empty
2053− subscriberPropagate (_merge_sub m) vals
2054−
2055−checkCycle :: HasSpiderTimeline x => EventSubscribed x -> EventM x ()
2056−checkCycle subscribed = liftIO $ do
2057− height <- readIORef (eventSubscribedHeightRef subscribed)
2058−
2059− -- currentHeight <- getCurrentHeight
2060− -- when (height <= currentHeight) $ if height /= invalidHeight
2061− -- then do
2062− -- myStack <- liftIO $ whoCreatedIORef undefined --TODO
2063− -- error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
2064− -- else liftIO $
2065− when (height == invalidHeight) $
2066−#ifdef DEBUG_CYCLES
2067− do
2068− nodesInvolvedInCycle <- walkInvalidHeightParents subscribed
2069− stacks <- forM nodesInvolvedInCycle whoCreatedEventSubscribed
2070− throwIO (EventLoopException stacks)
2071−#else
2072− throwIO EventLoopException
2073−#endif
2074−
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
2080− k <- getKey
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
2087−
2088− scheduleMergeSelf m height
2089− , subscriberInvalidateHeight = \old -> do --TODO: When removing a parent doesn't actually change the height, maybe we can avoid invalidating
2090− modifyIORef' (_merge_heightBagRef m) $ heightBagRemove old
2091− invalidateMergeHeight m
2092− , subscriberRecalculateHeight = \new -> do
2093− modifyIORef' (_merge_heightBagRef m) $ heightBagAdd new
2094− revalidateMergeHeight m
2095− }
2096−
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
2105−
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
1710+{-# INLINE mergeCheap' #-}
1711+mergeCheap' :: forall k x p s. (HasSpiderTimeline x, GCompare k, PatchTarget p ~ DMap k (Event x)) => MergeInitFunc k x s -> MergeUpdateFunc k x p s -> MergeDestroyFunc k s -> (DMap k s -> Int) -> Dynamic x p -> Event x (DMap k Identity)
1712+mergeCheap' getInitialSubscribers updateFunc destroy numParents d = Event $ \sub -> do
21101713 initialParents <- readBehaviorUntracked $ dynamicCurrent d
21111714 accumRef <- liftIO $ newIORef $ error "merge: accumRef not yet initialized"
21121715 heightRef <- liftIO $ newIORef $ error "merge: heightRef not yet initialized"
21131716 heightBagRef <- liftIO $ newIORef $ error "merge: heightBagRef not yet initialized"
21141717 parentsRef :: IORef (DMap k s) <- liftIO $ newIORef $ error "merge: parentsRef not yet initialized"
2115− changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2116−
2117− let subscribed = EventSubscribed
2118− { eventSubscribedHeightRef = heightRef
2119− , eventSubscribedRetained = toAny (parentsRef, changeSubdRef)
1718+ let scheduleSelf height = scheduleMerge' height heightRef $ do
1719+ m <- liftIO $ readIORef accumRef
1720+ liftIO $ writeIORef accumRef $! DMap.empty
1721+ --TODO: Assert that m is not empty
1722+ subscriberPropagate sub m
1723+ invalidateMyHeight = do
1724+ oldHeight <- readIORef heightRef
1725+ 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
1726+ writeIORef heightRef $! invalidHeight
1727+ subscriberInvalidateHeight sub oldHeight
1728+ revalidateMyHeight = do
1729+ currentHeight <- readIORef heightRef
1730+ when (currentHeight == invalidHeight) $ do -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
1731+ heights <- readIORef heightBagRef
1732+ parents <- readIORef parentsRef
1733+ -- When the number of heights in the bag reaches the number of parents, we should have a valid height
1734+ case heightBagSize heights `compare` numParents parents of
1735+ LT -> return ()
1736+ EQ -> do
1737+ let height = succHeight $ heightBagMax heights
1738+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: height: " <> show height
1739+ writeIORef heightRef $! height
1740+ subscriberRecalculateHeight sub height
1741+ GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show (numParents parents) <> ") for Merge"
1742+ subscriber :: forall a. EventM x (k a) -> Subscriber x a
1743+ subscriber getKey = Subscriber
1744+ { subscriberPropagate = \a -> do
1745+ oldM <- liftIO $ readIORef accumRef
1746+ k <- getKey
1747+ let newM = DMap.insertWith (error $ "Same key fired multiple times for Merge") k (Identity a) oldM
1748+ tracePropagate (Proxy :: Proxy x) $ " DMap.size oldM = " <> show (DMap.size oldM) <> "; DMap.size newM = " <> show (DMap.size newM)
1749+ liftIO $ writeIORef accumRef $! newM
1750+ when (DMap.null oldM) $ do -- Only schedule the firing once
1751+ height <- liftIO $ readIORef heightRef
1752+ --TODO: assertions about height
1753+ currentHeight <- getCurrentHeight
1754+ when (height <= currentHeight) $ do
1755+ if height /= invalidHeight
1756+ then do
1757+ myStack <- liftIO $ whoCreatedIORef undefined --TODO
1758+ error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
1759+ else liftIO $ do
21201760#ifdef DEBUG_CYCLES
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
1761+ nodesInvolvedInCycle <- walkInvalidHeightParents $ eventSubscribedMerge subscribed
1762+ stacks <- forM nodesInvolvedInCycle $ \(Some.This es) -> whoCreatedEventSubscribed es
1763+ let cycleInfo = ":\n" <> drawForest (listsToForest stacks)
1764+#else
1765+ let cycleInfo = ""
21261766#endif
2127− }
2128−
2129− m = Merge
2130− { _merge_parentsRef = parentsRef
2131− , _merge_heightBagRef = heightBagRef
2132− , _merge_heightRef = heightRef
2133− , _merge_sub = sub
2134− , _merge_accumRef = accumRef
1767+ error $ "Causality loop found" <> cycleInfo
1768+ scheduleSelf height
1769+ , subscriberInvalidateHeight = \old -> do --TODO: When removing a parent doesn't actually change the height, maybe we can avoid invalidating
1770+ modifyIORef' heightBagRef $ heightBagRemove old
1771+ invalidateMyHeight
1772+ , subscriberRecalculateHeight = \new -> do
1773+ modifyIORef' heightBagRef $ heightBagAdd new
1774+ revalidateMyHeight
21351775 }
2136− (dm, heights, initialParentState) <- getInitialSubscribers initialParents $ mergeSubscriber subscribed m
1776+ let updateMe x = do
1777+ oldParents <- liftIO $ readIORef parentsRef
1778+ (subscriptionsToKill, newParents) <- updateFunc subscriber heightBagRef oldParents x
1779+ liftIO $ writeIORef parentsRef $! newParents
1780+ return subscriptionsToKill
1781+ (dm, heights, initialParentState) <- getInitialSubscribers initialParents subscriber
21371782 let myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
21381783 myHeight = if invalidHeight `elem` heights
21391784 then invalidHeight
@@ -2142,153 +1787,43 @@ mergeGCheap' getParent getInitialSubscribers updateFunc destroy d = Event $ \sub
21421787 let (occ, accum) = if currentHeight >= myHeight -- If we should have fired by now
21431788 then (if DMap.null dm then Nothing else Just dm, DMap.empty)
21441789 else (Nothing, dm)
2145− unless (DMap.null accum) $ scheduleMergeSelf m myHeight
1790+ unless (DMap.null accum) $ do
1791+ scheduleSelf myHeight
1792+ occRef <- liftIO $ newIORef occ
1793+ when (isJust occ) $ scheduleClear occRef
21461794 liftIO $ writeIORef accumRef $! accum
21471795 liftIO $ writeIORef heightRef $! myHeight
21481796 liftIO $ writeIORef heightBagRef $! myHeightBag
1797+ changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
21491798 liftIO $ writeIORef parentsRef $! initialParentState
21501799 defer $ SomeMergeInit $ do
2151− let changeSubscriber = Subscriber
1800+ let s = Subscriber
21521801 { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2153− tracePropagate (Proxy :: Proxy x) "SubscriberMerge/Change"
2154− defer $ updateMerge subscribed m updateFunc a
1802+ tracePropagate (Proxy :: Proxy x) $ "SubscriberMerge/Change"
1803+ defer $ SomeMergeUpdate (updateMe a) invalidateMyHeight revalidateMyHeight
21551804 , subscriberInvalidateHeight = \_ -> return ()
21561805 , subscriberRecalculateHeight = \_ -> return ()
21571806 }
2158− (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
2159− forM_ change $ \c -> defer $ updateMerge subscribed m updateFunc c
1807+ (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) s
1808+ forM_ change $ \c -> defer $ SomeMergeUpdate (updateMe c) invalidateMyHeight revalidateMyHeight
21601809 -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
21611810 -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
21621811 -- its subscription.
2163− liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
1812+ liftIO $ writeIORef changeSubdRef (s, changeSubscription)
21641813 let unsubscribeAll = destroy =<< readIORef parentsRef
2165−
2166− return (EventSubscription unsubscribeAll subscribed, occ)
2167−
2168−
2169−mergeInt :: forall x a. (HasSpiderTimeline x) => DynamicS x (PatchIntMap (Event x a)) -> Event x (IntMap a)
2170−mergeInt = cacheEvent . mergeIntCheap
2171−
2172−{-# INLINABLE mergeIntCheap #-}
2173−mergeIntCheap :: forall x a. (HasSpiderTimeline x) => DynamicS x (PatchIntMap (Event x a)) -> Event x (IntMap a)
2174−mergeIntCheap d = Event $ \sub -> do
2175− initialParents <- readBehaviorUntracked $ dynamicCurrent d
2176− accum <- liftIO $ FastMutableIntMap.newEmpty
2177− heightRef <- liftIO $ newIORef zeroHeight
2178− heightBagRef <- liftIO $ newIORef heightBagEmpty
2179− parents <- liftIO $ FastMutableIntMap.newEmpty
2180− changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2181− let subscribed = EventSubscribed
2182− { eventSubscribedHeightRef = heightRef
2183− , eventSubscribedRetained = toAny (parents, changeSubdRef)
2184−#ifdef DEBUG_CYCLES
2185− , eventSubscribedGetParents = fmap (_eventSubscription_subscribed . snd) <$> FastMutableIntMap.toList parents
2186− , eventSubscribedHasOwnHeightRef = False
2187− , eventSubscribedWhoCreated = whoCreatedIORef heightRef
2188−#endif
2189− }
2190− let scheduleSelf = do
2191− height <- liftIO $ readIORef $ heightRef
2192− scheduleMerge' height heightRef $ do
2193− vals <- liftIO $ FastMutableIntMap.getFrozenAndClear accum
2194− subscriberPropagate sub vals
2195− invalidateMyHeight = invalidateMergeHeight' heightRef sub
2196− recalculateMyHeight = do
2197− currentHeight <- readIORef heightRef
2198− when (currentHeight == invalidHeight) $ do --TODO: This will almost always be true; can we get rid of this check and just proceed to the next one always?
2199− heights <- readIORef heightBagRef
2200− numParents <- FastMutableIntMap.size parents
2201− case heightBagSize heights `compare` numParents of
2202− LT -> return ()
2203− EQ -> do
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
2212−
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
2218− invalidateMyHeight
2219− , subscriberRecalculateHeight = \new -> do
2220− modifyIORef' heightBagRef $ heightBagAdd new
2221− recalculateMyHeight
2222− }
2223− forM_ (IntMap.toList initialParents) $ \(k, p) -> do
2224− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead p $ mySubscriber k
2225− liftIO $ do
2226− forM_ parentOcc $ FastMutableIntMap.insert accum k
2227− FastMutableIntMap.insert parents k subscription
2228− height <- getEventSubscribedHeight parentSubd
2229− if height == invalidHeight
2230− then writeIORef heightRef invalidHeight
2231− else do
2232− modifyIORef' heightBagRef $ heightBagAdd height
2233− modifyIORef' heightRef $ \oldHeight ->
2234− if oldHeight == invalidHeight
2235− then invalidHeight
2236− else max (succHeight height) oldHeight
2237− myHeight <- liftIO $ readIORef heightRef
2238− currentHeight <- getCurrentHeight
2239− isEmpty <- liftIO $ FastMutableIntMap.isEmpty accum
2240− occ <- if currentHeight >= myHeight -- If we should have fired by now
2241− then if isEmpty
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
2245− return Nothing
2246− defer $ SomeMergeInit $ do
2247− let updateMe a = SomeMergeUpdate u invalidateMyHeight recalculateMyHeight
2248− where
2249− u = do
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
2259−
2260− print ("updateMe", oldParentHeight)
2261− modifyIORef' heightBagRef $ heightBagRemove oldParentHeight
2262− return $ IntMap.elems oldParents
2263− let changeSubscriber = Subscriber
2264− { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2265− tracePropagate (Proxy :: Proxy x) $ "SubscriberMergeInt/Change"
2266− defer $ updateMe a
2267− , subscriberInvalidateHeight = \_ -> return ()
2268− , subscriberRecalculateHeight = \_ -> return ()
2269− }
2270− (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
2271− forM_ change $ \c -> defer $ updateMe c
2272− -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
2273− -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
2274− -- its subscription.
2275− liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
2276− let unsubscribeAll = traverse_ unsubscribe =<< FastMutableIntMap.getFrozenAndClear parents
2277−
2278−
2279− return (EventSubscription unsubscribeAll subscribed, occ)
1814+ return ( EventSubscription unsubscribeAll $ EventSubscribed heightRef $ toAny (parentsRef, changeSubdRef)
1815+ , occ
1816+ )
22801817
22811818newtype 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) }
22831819
2284−fanG :: (HasSpiderTimeline x, GCompare k) => Event x (DMap k v) -> EventSelectorG x k v
2285−fanG e = unsafePerformIO $ do
2286− ref <- newIORef Nothing
1820+fan :: (HasSpiderTimeline x, GCompare k) => Event x (DMap k Identity) -> EventSelector x k
1821+fan e =
22871822 let f = Fan
22881823 { fanParent = e
2289− , fanSubscribed = ref
1824+ , fanSubscribed = unsafeNewIORef e Nothing
22901825 }
2291− pure $ EventSelectorG $ \k -> eventFan k f
1826+ in EventSelector $ \k -> eventFan k f
22921827
22931828runHoldInits :: HasSpiderTimeline x => IORef [SomeHoldInit x] -> IORef [SomeDynInit x] -> IORef [SomeMergeInit x] -> EventM x ()
22941829runHoldInits holdInitRef dynInitRef mergeInitRef = do
@@ -2319,14 +1854,13 @@ newEventEnv = do
23191854 mergeInitRef <- newIORef []
23201855 heightRef <- newIORef zeroHeight
23211856 toClearRef <- newIORef []
2322− toClearIntRef <- newIORef []
23231857 toClearRootRef <- newIORef []
23241858 coincidenceInfosRef <- newIORef []
23251859 delayedRef <- newIORef IntMap.empty
2326− return $ EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef
1860+ return $ EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearRootRef heightRef coincidenceInfosRef delayedRef
23271861
23281862clearEventEnv :: EventEnv x -> IO ()
2329−clearEventEnv (EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef) = do
1863+clearEventEnv (EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearRootRef heightRef coincidenceInfosRef delayedRef) = do
23301864 writeIORef toAssignRef []
23311865 writeIORef holdInitRef []
23321866 writeIORef dynInitRef []
@@ -2334,44 +1868,41 @@ clearEventEnv (EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeI
23341868 writeIORef mergeInitRef []
23351869 writeIORef heightRef zeroHeight
23361870 writeIORef toClearRef []
2337− writeIORef toClearIntRef []
23381871 writeIORef toClearRootRef []
23391872 writeIORef coincidenceInfosRef []
23401873 writeIORef delayedRef IntMap.empty
23411874
23421875-- | Run an event action outside of a frame
23431876runFrame :: forall x a. HasSpiderTimeline x => EventM x a -> SpiderHost x a --TODO: This function also needs to hold the mutex
2344−runFrame a = SpiderHost $ do
2345− let env = _spiderTimeline_eventEnv $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1877+runFrame a = SpiderHost $ ask >>= \_ -> lift $ do
1878+ let env = _spiderTimeline_eventEnv (spiderTimeline :: SpiderTimelineEnv x)
23461879 let go = do
23471880 result <- a
23481881 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
23491882 return result
23501883 result <- runEventM go
23511884 toClear <- readIORef $ eventEnvClears env
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
1885+ forM_ toClear $ \(SomeClear ref) -> {-# SCC "clear" #-} writeIORef ref Nothing
23551886 toClearRoot <- readIORef $ eventEnvRootClears env
2356− forM_ toClearRoot $ \(Some (RootClear ref)) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
1887+ forM_ toClearRoot $ \(SomeRootClear ref) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
23571888 toAssign <- readIORef $ eventEnvAssignments env
23581889 toReconnectRef <- newIORef []
23591890 coincidenceInfos <- readIORef $ eventEnvResetCoincidences env
23601891 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
23611892 writeIORef vRef v
2362− traceInvalidate $ "Invalidating Hold"
1893+ when debugInvalidate $ putStrLn $ "Invalidating Hold"
23631894 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
23641895 mergeUpdates <- readIORef $ eventEnvMergeUpdates env
23651896 writeIORef (eventEnvMergeUpdates env) []
2366− tracePropagate (Proxy::Proxy x) $ "Updating merges"
1897+ when debugPropagate $ putStrLn "Updating merges"
23671898 mergeSubscriptionsToKill <- runEventM $ concat <$> mapM _someMergeUpdate_update mergeUpdates
2368− tracePropagate (Proxy::Proxy x) $ "Updating merges done"
1899+ when debugPropagate $ putStrLn "Updating merges done"
23691900 toReconnect <- readIORef toReconnectRef
23701901 clearEventEnv env
23711902 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
23721903 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
23731904 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
2374− traceInvalidate $ "Finalizing invalidator for Switch" <> showNodeId subscribed
1905+ when debugInvalidate $ putStrLn $ "Finalizing invalidator for Switch" <> showNodeId subscribed
23751906 finalize wi
23761907 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
23771908 wi' <- mkWeakPtrWithDebug i "wi'"
@@ -2382,10 +1913,10 @@ runFrame a = SpiderHost $ do
23821913 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
23831914 --TODO: Make sure we touch the pieces of the SwitchSubscribed at the appropriate times
23841915 sub <- newSubscriberSwitch subscribed
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
1916+ 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
23861917 {-
23871918 stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
2388− liftIO $ debugStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
1919+ liftIO $ putStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
23891920 EventRoot _ -> "EventRoot"
23901921 EventNever -> "EventNever"
23911922 _ -> "something else"
@@ -2400,7 +1931,7 @@ runFrame a = SpiderHost $ do
24001931 myHeight <- readIORef $ switchSubscribedHeight subscribed
24011932 when (parentHeight /= myHeight) $ do
24021933 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
2403− WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
1934+ WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
24041935 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
24051936 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
24061937 unsubscribe subscription
@@ -2441,7 +1972,7 @@ invalidateCoincidenceHeight subscribed = do
24411972 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
24421973 when (oldHeight /= invalidHeight) $ do
24431974 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
2444− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1975+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
24451976
24461977updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
24471978updateSwitchHeight new subscribed = do
@@ -2449,7 +1980,7 @@ updateSwitchHeight new subscribed = do
24491980 when (oldHeight == invalidHeight) $ do --TODO: This 'when' should probably be an assertion
24501981 when (new /= invalidHeight) $ do --TODO: This 'when' should probably be an assertion
24511982 writeIORef (switchSubscribedHeight subscribed) $! new
2452− WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
1983+ WeakBag.traverse (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
24531984
24541985recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
24551986recalculateCoincidenceHeight subscribed = do
@@ -2458,7 +1989,7 @@ recalculateCoincidenceHeight subscribed = do
24581989 height <- calculateCoincidenceHeight subscribed
24591990 when (height /= invalidHeight) $ do
24601991 writeIORef (coincidenceSubscribedHeight subscribed) $! height
2461− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
1992+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
24621993
24631994calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
24641995calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
@@ -2497,218 +2028,13 @@ invalidate toReconnectRef wis = do
24972028-- Reflex integration
24982029--------------------------------------------------------------------------------
24992030
2500−-- | Designates the default, global Spider timeline
2501−data SpiderTimeline x
2502−type role SpiderTimeline nominal
2503−
2504−-- | The default, global Spider environment
2505−type Spider = SpiderTimeline Global
2506−
2507−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (EventM x) where
2508− {-# INLINABLE sample #-}
2509− sample (SpiderBehavior b) = readBehaviorUntracked b
2510−
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
2525−
2526−instance Reflex.Class.MonadSample (SpiderTimeline x) (SpiderPullM x) where
2527− {-# INLINABLE sample #-}
2528− sample = coerce . readBehaviorTracked . unSpiderBehavior
2529−
2530−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderPushM x) where
2531− {-# INLINABLE sample #-}
2532− sample (SpiderBehavior b) = SpiderPushM $ readBehaviorUntracked b
2533−
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
2548−
2549−
2550−instance HasSpiderTimeline x => Monad (Reflex.Class.Dynamic (SpiderTimeline x)) where
2551− {-# INLINE return #-}
2552− return = pure
2553− {-# INLINE (>>=) #-}
2554− x >>= f = SpiderDynamic $ dynamicDynIdentity $ newJoinDyn $ newMapDyn (unSpiderDynamic . f) $ unSpiderDynamic x
2555− {-# INLINE (>>) #-}
2556− (>>) = (*>)
2557−#if !MIN_VERSION_base(4,13,0)
2558− {-# INLINE fail #-}
2559− fail _ = error "Dynamic does not support 'fail'"
2560−#endif
2561−
2562−{-# INLINABLE newJoinDyn #-}
2563−newJoinDyn :: HasSpiderTimeline x => DynamicS x (Identity (DynamicS x (Identity a))) -> Reflex.Spider.Internal.Dyn x (Identity a)
2564−newJoinDyn d =
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'
2571−
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
2575−
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 #-}
2579−
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)
2031+#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
2032+-- When we're specializing, we include this from Reflex.Class instead, because
2033+-- it needs access to these types; when we're not, we want them here, so our
2034+-- instance isn't an orphan instance.
2035+#include "SpiderTimeline.include.hs"
2036+#include "SpiderTimelineHost.include.hs"
25842037#endif
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
2588−
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
2591−
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
2594−
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
2597−
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
2600−
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
2614−
2615−
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
2618−
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
2633−
2634−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderHost x) where
2635− {-# INLINABLE sample #-}
2636− sample = runFrame . readBehaviorUntracked . unSpiderBehavior
2637−
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
2641−
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
2655−
2656−--------------------------------------------------------------------------------
2657−-- Deprecated items
2658−--------------------------------------------------------------------------------
2659−
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
2671− scheduleClear val
2672− , subscriberInvalidateHeight = \_ -> return ()
2673− , subscriberRecalculateHeight = \_ -> return ()
2674− }
2675− return $ SpiderEventHandle
2676− { spiderEventHandleSubscription = subscription
2677− , spiderEventHandleValue = val
2678− }
2679−
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
2684−
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
2689− touch h
2690− return result
2691−
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
2697−
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
2703−
2704−instance HasSpiderTimeline x => Reflex.Host.Class.MonadSubscribeEvent (SpiderTimeline x) (SpiderHost x) where
2705− {-# INLINABLE subscribeEvent #-}
2706− subscribeEvent = runFrame . runSpiderHostFrame . Reflex.Host.Class.subscribeEvent
2707−
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
27122038
27132039unsafeNewSpiderTimelineEnv :: forall x. IO (SpiderTimelineEnv x)
27142040unsafeNewSpiderTimelineEnv = do
@@ -2717,7 +2043,7 @@ unsafeNewSpiderTimelineEnv = do
27172043#ifdef DEBUG
27182044 depthRef <- newIORef 0
27192045#endif
2720− return $ STE $ SpiderTimelineEnv
2046+ return $ SpiderTimelineEnv
27212047 { _spiderTimeline_lock = lock
27222048 , _spiderTimeline_eventEnv = env
27232049#ifdef DEBUG
@@ -2725,40 +2051,41 @@ unsafeNewSpiderTimelineEnv = do
27252051#endif
27262052 }
27272053
2054+#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
27282055-- | Create a new SpiderTimelineEnv
27292056newSpiderTimeline :: IO (Some SpiderTimelineEnv)
2730−newSpiderTimeline = withSpiderTimeline (pure . Some)
2057+newSpiderTimeline = withSpiderTimeline (pure . Some.This)
27312058
2732−data LocalSpiderTimeline (x :: Type) s
2059+data LocalSpiderTimeline x s
27332060
27342061instance Reifies s (SpiderTimelineEnv x) =>
27352062 HasSpiderTimeline (LocalSpiderTimeline x s) where
2736− spiderTimeline = localSpiderTimeline Proxy $ reflect (Proxy :: Proxy s)
2063+ spiderTimeline = localSpiderTimeline (Proxy :: Proxy s) $ reflect (Proxy :: Proxy s)
27372064
27382065localSpiderTimeline
2739− :: proxy s
2066+ :: Proxy s
27402067 -> SpiderTimelineEnv x
27412068 -> SpiderTimelineEnv (LocalSpiderTimeline x s)
2742−localSpiderTimeline _ = coerce
2069+localSpiderTimeline _ = unsafeCoerce
27432070
27442071-- | Pass a new timeline to the given function.
27452072withSpiderTimeline :: (forall x. HasSpiderTimeline x => SpiderTimelineEnv x -> IO r) -> IO r
27462073withSpiderTimeline k = do
27472074 env <- unsafeNewSpiderTimelineEnv
27482075 reify env $ \s -> k $ localSpiderTimeline s env
2076+#endif
27492077
2750−newtype SpiderPullM (x :: Type) a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2751−
2752−type ComputeM = EventM
2078+newtype SpiderPullM x a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
27532079
2754−newtype SpiderPushM (x :: Type) a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2080+newtype SpiderPushM x a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
27552081
2082+#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
27562083instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
27572084 {-# SPECIALIZE instance R.Reflex (SpiderTimeline Global) #-}
27582085 newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
27592086 newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
2760− newtype Dynamic (SpiderTimeline x) a = SpiderDynamic { unSpiderDynamic :: DynamicS x (Identity a) } -- deriving (Functor, Applicative, Monad)
2761− newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: DynamicS x p }
2087+ newtype Dynamic (SpiderTimeline x) a = SpiderDynamic { unSpiderDynamic :: Dynamic x (Identity a) } -- deriving (Functor, Applicative, Monad)
2088+ newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: Dynamic x p }
27622089 type PullM (SpiderTimeline x) = SpiderPullM x
27632090 type PushM (SpiderTimeline x) = SpiderPushM x
27642091 {-# INLINABLE never #-}
@@ -2771,15 +2098,10 @@ instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
27712098 pushCheap f = SpiderEvent . pushCheap (coerce f) . unSpiderEvent
27722099 {-# INLINABLE pull #-}
27732100 pull = SpiderBehavior . pull . coerce
2774− {-# INLINABLE fanG #-}
2775− fanG e = R.EventSelectorG $ SpiderEvent . selectG (fanG (unSpiderEvent e))
2776− {-# INLINABLE mergeG #-}
2777− mergeG
2778− :: forall k2 (k :: k2 -> *) q (v :: k2 -> *). GCompare k
2779− => (forall a. q a -> R.Event (SpiderTimeline x) (v a))
2780− -> DMap k q
2781− -> R.Event (SpiderTimeline x) (DMap k v)
2782− mergeG nt = SpiderEvent . mergeG (unSpiderEvent #. nt) . dynamicConst
2101+ {-# INLINABLE merge #-}
2102+ merge = SpiderEvent . merge . dynamicConst . (coerce :: DMap k (R.Event (SpiderTimeline x)) -> DMap k (Event x))
2103+ {-# INLINABLE fan #-}
2104+ fan e = R.EventSelector $ SpiderEvent . select (fan (unSpiderEvent e))
27832105 {-# INLINABLE switch #-}
27842106 switch = SpiderEvent . switch . (coerce :: Behavior x (R.Event (SpiderTimeline x) a) -> Behavior x (Event x a)) . unSpiderBehavior
27852107 {-# INLINABLE coincidence #-}
@@ -2787,15 +2109,15 @@ instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
27872109 {-# INLINABLE current #-}
27882110 current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
27892111 {-# INLINABLE updated #-}
2790− updated = SpiderEvent #. dynamicUpdated .# fmap coerce . unSpiderDynamic
2112+ updated = coerce $ SpiderEvent . dynamicUpdated . unSpiderDynamic
27912113 {-# INLINABLE unsafeBuildDynamic #-}
27922114 unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (coerce readV0) $ coerce $ unSpiderEvent v'
27932115 {-# INLINABLE unsafeBuildIncremental #-}
27942116 unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeBuildDynamic (coerce readV0) $ unSpiderEvent dv
2795− {-# INLINABLE mergeIncrementalG #-}
2796− mergeIncrementalG nt = SpiderEvent #. mergeG (coerce #. nt) .# unSpiderIncremental
2797− {-# INLINABLE mergeIncrementalWithMoveG #-}
2798− mergeIncrementalWithMoveG nt = SpiderEvent #. mergeWithMove (coerce #. nt) .# unSpiderIncremental
2117+ {-# INLINABLE mergeIncremental #-}
2118+ mergeIncremental = SpiderEvent . merge . (unsafeCoerce :: Dynamic x (PatchDMap k (R.Event (SpiderTimeline x))) -> Dynamic x (PatchDMap k (Event x))) . unSpiderIncremental
2119+ {-# INLINABLE mergeIncrementalWithMove #-}
2120+ mergeIncrementalWithMove = SpiderEvent . mergeWithMove . (unsafeCoerce :: Dynamic x (PatchDMapWithMove k (R.Event (SpiderTimeline x))) -> Dynamic x (PatchDMapWithMove k (Event x))) . unSpiderIncremental
27992121 {-# INLINABLE currentIncremental #-}
28002122 currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
28012123 {-# INLINABLE updatedIncremental #-}
@@ -2806,12 +2128,8 @@ instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
28062128 return $ Identity <$> apply p c --TODO: Avoid the redundant 'apply'
28072129 eventCoercion Coercion = Coercion
28082130 behaviorCoercion Coercion = Coercion
2809− dynamicCoercion Coercion = Coercion
2810− incrementalCoercion Coercion Coercion = Coercion
2811− {-# INLINABLE mergeIntIncremental #-}
2812− mergeIntIncremental = SpiderEvent . mergeInt . coerce
2813− {-# INLINABLE fanInt #-}
2814− fanInt e = R.EventSelectorInt $ SpiderEvent . selectInt (fanInt (unSpiderEvent e))
2131+ dynamicCoercion = unsafeCoerce --TODO: How can we avoid this unsafeCoerce? This is safe only because we know how Identity works as a Patch instance
2132+#endif
28152133
28162134data RootTrigger x a = forall k. GCompare k => RootTrigger (WeakBag (Subscriber x a), IORef (DMap k Identity), k a)
28172135
@@ -2834,7 +2152,7 @@ instance MonadAtomicRef (EventM x) where
28342152 atomicModifyRef r f = liftIO $ atomicModifyRef r f
28352153
28362154-- | The monad for actions that manipulate a Spider timeline identified by @x@
2837−newtype SpiderHost (x :: Type) a = SpiderHost { unSpiderHost :: IO a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2155+newtype SpiderHost x a = SpiderHost { unSpiderHost :: ReaderT (SpiderTimelineEnv x) IO a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
28382156
28392157instance Monad (SpiderHost x) where
28402158 {-# INLINABLE (>>=) #-}
@@ -2843,27 +2161,22 @@ instance Monad (SpiderHost x) where
28432161 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
28442162 {-# INLINABLE return #-}
28452163 return x = SpiderHost $ return x
2846−#if !MIN_VERSION_base(4,13,0)
28472164 {-# INLINABLE fail #-}
2848− fail = MonadFail.fail
2849−#endif
2850−
2851−instance MonadFail (SpiderHost x) where
2852− {-# INLINABLE fail #-}
2853− fail s = SpiderHost $ MonadFail.fail s
2165+ fail s = SpiderHost $ fail s
28542166
28552167-- | Run an action affecting the global Spider timeline; this will be guarded by
28562168-- a mutex for that timeline
28572169runSpiderHost :: SpiderHost Global a -> IO a
2858−runSpiderHost (SpiderHost a) = a
2170+runSpiderHost (SpiderHost a) = runReaderT a globalSpiderTimelineEnv
28592171
2172+#ifndef SPECIALIZE_TO_SPIDERTIMELINE_GLOBAL
28602173-- | Run an action affecting a given Spider timeline; this will be guarded by a
28612174-- mutex for that timeline
28622175runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimelineEnv x -> IO a
2863−runSpiderHostForTimeline (SpiderHost a) _ = a
2176+runSpiderHostForTimeline (SpiderHost a) = runReaderT a
2177+#endif
28642178
2865−newtype SpiderHostFrame (x :: Type) a = SpiderHostFrame { runSpiderHostFrame :: EventM x a }
2866− deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2179+newtype SpiderHostFrame x a = SpiderHostFrame { runSpiderHostFrame :: EventM x a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
28672180
28682181instance Monad (SpiderHostFrame x) where
28692182 {-# INLINABLE (>>=) #-}
@@ -2872,21 +2185,15 @@ instance Monad (SpiderHostFrame x) where
28722185 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
28732186 {-# INLINABLE return #-}
28742187 return x = SpiderHostFrame $ return x
2875−#if !MIN_VERSION_base(4,13,0)
28762188 {-# INLINABLE fail #-}
28772189 fail s = SpiderHostFrame $ fail s
2878−#endif
2879−
2880−instance NotReady (SpiderTimeline x) (SpiderHostFrame x) where
2881− notReadyUntil _ = pure ()
2882− notReady = pure ()
28832190
2884−newEventWithTriggerIO :: forall x a. HasSpiderTimeline x => (RootTrigger x a -> IO (IO ())) -> IO (Event x a)
2191+newEventWithTriggerIO :: (RootTrigger x a -> IO (IO ())) -> IO (Event x a)
28852192newEventWithTriggerIO f = do
28862193 es <- newFanEventWithTriggerIO $ \Refl -> f
28872194 return $ select es Refl
28882195
2889−newFanEventWithTriggerIO :: (HasSpiderTimeline x, GCompare k) => (forall a. k a -> RootTrigger x a -> IO (IO ())) -> IO (EventSelector x k)
2196+newFanEventWithTriggerIO :: GCompare k => (forall a. k a -> RootTrigger x a -> IO (IO ())) -> IO (EventSelector x k)
28902197newFanEventWithTriggerIO f = do
28912198 occRef <- newIORef DMap.empty
28922199 subscribedRef <- newIORef DMap.empty
@@ -2920,11 +2227,3 @@ instance MonadAtomicRef (SpiderHostFrame x) where
29202227instance PrimMonad (SpiderHostFrame x) where
29212228 type PrimState (SpiderHostFrame x) = PrimState IO
29222229 primitive = SpiderHostFrame . EventM . primitive
2923−
2924−instance NotReady (SpiderTimeline x) (SpiderHost x) where
2925− notReadyUntil _ = return ()
2926− notReady = return ()
2927−
2928−instance HasSpiderTimeline x => NotReady (SpiderTimeline x) (PerformEventT (SpiderTimeline x) (SpiderHost x)) where
2929− notReadyUntil _ = return ()
2930− notReady = return ()