@@ -40,22 +40,22 @@ module Streamly.Internal.Data.MutArray.Type
4040
4141 -- ** Casting
4242 , cast
43− , castUnsafe -- XXX unsafeCast
43+ , castUnsafe
4444 , asBytes
45− , unsafePinnedAsPtr
46− , unsafeAsPtr
45+ , asPtrUnsafe
46+ , asUnpinnedPtrUnsafe
4747
4848 -- ** Construction
49− , empty
49+ , nil
5050
5151 -- *** New
5252 -- | New arrays are always empty arrays with some reserve capacity to
5353 -- extend the length without reallocating.
54− , emptyOf
55− , newArrayWith -- emptyAlignedWith
56− , pinnedEmptyOf
57− , pinnedNewAligned -- XXX not required
58− -- , new -- uninitialized array of specified length
54+ , new
55+ , newArrayWith
56+ , pinnedNew
57+ , pinnedNewBytes
58+ , pinnedNewAligned
5959
6060 -- *** Cloning
6161 , clone
@@ -63,25 +63,27 @@ module Streamly.Internal.Data.MutArray.Type
6363
6464 -- *** Slicing
6565 -- | Get a subarray without copying
66− , getSliceUnsafe -- XXX unsafeGetSlice
66+ , getSliceUnsafe
6767 , getSlice
6868 , splitAt -- XXX should be able to express using getSlice
6969 , breakOn
7070
7171 -- *** Stream Folds
7272 , ArrayUnsafe (..)
73− , unsafeCreateOfWith
74− , unsafeCreateOf
75− , unsafePinnedCreateOf
76− , pinnedCreateOf
77− , createOfWith
78− , createOf
79− , revCreateOf
80−
81− , pinnedCreate
82− , createWith
83− , create
84− -- , revCreate
73+ , writeNWithUnsafe
74+ , writeNWith
75+ , writeNUnsafe
76+ , pinnedWriteNUnsafe
77+ , writeN
78+ , pinnedWriteN
79+ , pinnedWriteNAligned
80+
81+ , writeWith
82+ , write
83+ , pinnedWrite
84+
85+ , writeRevN
86+ -- , writeRev
8587
8688 -- *** From containers
8789 , fromListN
@@ -97,11 +99,11 @@ module Streamly.Internal.Data.MutArray.Type
9799 , fromByteStr#
98100 , fromPtrN
99101 , fromChunksK
100− , fromChunksRealloced -- fromSmallChunks
102+ , fromChunksRealloced
101103
102104 -- ** Random writes
103105 , putIndex
104− , putIndexUnsafe -- XXX unsafePutIndex
106+ , putIndexUnsafe
105107 , putIndices
106108 -- , putFromThenTo
107109 -- , putFrom -- start writing at the given position
@@ -109,7 +111,7 @@ module Streamly.Internal.Data.MutArray.Type
109111 -- , putFromTo
110112 -- , putFromRev
111113 -- , putUptoRev
112− , modifyIndexUnsafe -- XXX unsafeModifyIndex
114+ , modifyIndexUnsafe
113115 , modifyIndex
114116 , modifyIndices
115117 , modify
@@ -120,9 +122,9 @@ module Streamly.Internal.Data.MutArray.Type
120122
121123 -- *** Indexing
122124 , getIndex
123− , getIndexUnsafe -- XXX unsafeGetIndex
125+ , getIndexUnsafe
124126 -- , getFromThenTo
125− , getIndexRev -- getRevIndex?
127+ , getIndexRev
126128 , indexReader
127129 , indexReaderWith
128130
@@ -162,9 +164,9 @@ module Streamly.Internal.Data.MutArray.Type
162164 , blockSize
163165 , arrayChunkBytes
164166 , allocBytesToElemCount
165− , realloc -- this is "resize"
166− , grow
167− , growExp
167+ , realloc
168+ , resize
169+ , resizeExp
168170 , rightSize
169171
170172 -- ** Folding
@@ -193,34 +195,24 @@ module Streamly.Internal.Data.MutArray.Type
193195 , snoc
194196 , snocLinear
195197 , snocMay
196− , snocUnsafe -- XXX unsafeSnoc
198+ , snocUnsafe
197199
198200 -- *** Appending streams
199− , unsafeAppendN
200− , appendN
201− , appendWith
202− , append
201+ , writeAppendNUnsafe
202+ , writeAppendN
203+ , writeAppendWith
204+ , writeAppend
203205
204206 -- *** Appending arrays
205207 , spliceCopy
206208 , spliceWith
207209 , splice
208210 , spliceExp
209− , spliceUnsafe -- XXX unsafeSplice
211+ , spliceUnsafe
210212 -- , putSlice
211213 -- , appendSlice
212214 -- , appendSliceFrom
213215
214− -- ** Serialization using Unbox
215− , pokeAppend
216− , pokeAppendMay
217− , pokeSkipUnsafe -- unsafePokeSkip
218−
219− -- ** Deserialization using Unbox
220− , peekUncons
221− , peekUnconsUnsafe -- unsafePeekUncons
222− , peekSkipUnsafe -- unsafePeekSkip
223−
224216 -- Arrays of arrays
225217 -- We can add dimensionality parameter to the array type to get
226218 -- multidimensional arrays. Multidimensional arrays would just be a
@@ -242,8 +234,6 @@ module Streamly.Internal.Data.MutArray.Type
242234
243235 -- *** Concat
244236 -- | Append the arrays in a stream to form a stream of elements.
245− , concatWith
246− , concatRevWith
247237 , concat
248238 , concatRev
249239
@@ -251,12 +241,9 @@ module Streamly.Internal.Data.MutArray.Type
251241 -- | Append the arrays in a stream to form a stream of larger arrays.
252242 , SpliceState (..)
253243 , pCompactLE
254− , pPinnedCompactLE
255− , compactLeAs
244+ , rCompactLE
256245 , fCompactGE
257− , fPinnedCompactGE
258246 , lCompactGE
259− , lPinnedCompactGE
260247 , compactGE
261248 , compactEQ
262249
@@ -267,7 +254,6 @@ module Streamly.Internal.Data.MutArray.Type
267254 , c_memchr
268255
269256 -- * Deprecated
270− , asPtrUnsafe
271257 , writeChunks
272258 , flattenArrays
273259 , flattenArraysRev
@@ -277,27 +263,6 @@ module Streamly.Internal.Data.MutArray.Type
277263 , cmp
278264 , getIndices
279265 , getIndicesWith
280− , resize
281− , resizeExp
282− , nil
283− , new
284− , pinnedNew
285− , pinnedNewBytes
286− , writeAppendNUnsafe
287− , writeAppendN
288− , writeAppendWith
289− , writeAppend
290− , writeNWithUnsafe
291− , writeNWith
292− , writeNUnsafe
293− , pinnedWriteNUnsafe
294− , writeN
295− , pinnedWriteN
296− , pinnedWriteNAligned -- XXX not required
297− , writeWith
298− , write
299− , pinnedWrite
300− , writeRevN
301266 )
302267where
303268
@@ -479,8 +444,6 @@ isPinned MutArray{..} = Unboxed.isPinned arrContents
479444-- we need more than that. See stg_pinnedNewAlignedByteArrayzh and
480445-- allocatePinned in GHC source.
481446
482−-- XXX Rename to emptyAlignedWith, alignSize should be first arg.
483−
484447-- | @newArrayWith allocator alignment count@ allocates a new array of zero
485448-- length and with a capacity to hold @count@ elements, using @allocator
486449-- size alignment@ as the memory allocator function.
@@ -504,25 +467,12 @@ newArrayWith alloc alignSize count = do
504467 , arrBound = size
505468 }
506469
507−-- For arrays "nil" sounds a bit odd. empty is better. The only problem with
508−-- empty is that it is also used by the Alternative type class. But assuming we
509−-- will mostly import the Array module qualified this should be fine.
510−
511−-- | Create an empty array.
512−empty ::
513−#ifdef DEVBUILD
514− Unbox a =>
515−#endif
516− MutArray a
517−empty = MutArray Unboxed.empty 0 0 0
518−
519−{-# DEPRECATED nil "Please use empty instead." #-}
520470nil ::
521471#ifdef DEVBUILD
522472 Unbox a =>
523473#endif
524474 MutArray a
525−nil = empty
475+nil = MutArray Unboxed.nil 0 0 0
526476
527477{-# INLINE newBytesAs #-}
528478newBytesAs :: MonadIO m =>
@@ -539,13 +489,12 @@ newBytesAs ps bytes = do
539489 , arrBound = bytes
540490 }
541491
542−-- | Allocates a pinned empty array that with a reserved capacity of bytes.
543−-- The memory of the array is uninitialized and the allocation is aligned as
544−-- per the 'Unboxed' instance of the type.
492+-- | Allocates a pinned empty array that can hold 'count' items. The memory of
493+-- the array is uninitialized and the allocation is aligned as per the
494+-- 'Unboxed' instance of the type.
545495--
546496-- /Pre-release/
547497{-# INLINE pinnedNewBytes #-}
548−{-# DEPRECATED pinnedNewBytes "Please use pinnedEmptyOf with appropriate calculation" #-}
549498pinnedNewBytes :: MonadIO m =>
550499#ifdef DEVBUILD
551500 Unbox a =>
@@ -570,31 +519,21 @@ newAs ps =
570519 (error "new: alignment is not used in unpinned arrays.")
571520
572521-- XXX can unaligned allocation be more efficient when alignment is not needed?
573−
574−-- | Allocates a pinned array of zero length but growable to the specified
575−-- capacity without reallocation.
576−{-# INLINE pinnedEmptyOf #-}
577−pinnedEmptyOf :: forall m a. (MonadIO m, Unbox a) => Int -> m (MutArray a)
578−pinnedEmptyOf = newAs Pinned
579−
580−-- XXX Deprecate in major
581−-- {-# DEPRECATED pinnedNew "Please use pinnedEmptyOf instead." #-}
522+--
523+-- | Allocates an empty pinned array that can hold 'count' items. The memory of
524+-- the array is uninitialized and the allocation is aligned as per the 'Unboxed'
525+-- instance of the type.
526+--
582527{-# INLINE pinnedNew #-}
583528pinnedNew :: forall m a. (MonadIO m, Unbox a) => Int -> m (MutArray a)
584−pinnedNew = pinnedEmptyOf
529+pinnedNew = newAs Pinned
585530
586−-- | Allocates an unpinned array of zero length but growable to the specified
587−-- capacity without reallocation.
531+-- | Allocates an empty unpinned array that can hold 'count' items. The memory
532+-- of the array is uninitialized.
588533--
589−{-# INLINE emptyOf #-}
590−emptyOf :: (MonadIO m, Unbox a) => Int -> m (MutArray a)
591−emptyOf = newAs Unpinned
592−
593−-- XXX Deprecate in major
594−-- {-# DEPRECATED new "Please use emptyOf instead." #-}
595534{-# INLINE new #-}
596535new :: (MonadIO m, Unbox a) => Int -> m (MutArray a)
597−new = emptyOf
536+new = newAs Unpinned
598537
599538-------------------------------------------------------------------------------
600539-- Random writes
@@ -842,15 +781,15 @@ roundDownTo elemSize size = size - (size `mod` elemSize)
842781-- Since this is not inlined Unboxed consrraint leads to dictionary passing
843782-- which complicates some inspection tests.
844783--
845−{-# NOINLINE reallocExplicitAs #-}
846−reallocExplicitAs :: PinnedState -> Int -> Int -> MutArray a -> IO (MutArray a)
847−reallocExplicitAs ps elemSize newCapacityInBytes MutArray{..} = do
784+{-# NOINLINE reallocExplicit #-}
785+reallocExplicit :: Int -> Int -> MutArray a -> IO (MutArray a)
786+reallocExplicit elemSize newCapacityInBytes MutArray{..} = do
848787 assertM(arrEnd <= arrBound)
849788
850789 -- Allocate new array
851790 let newCapMaxInBytes = roundUpLargeArray newCapacityInBytes
852791 contents <-
853− if ps == Pinned
792+ if Unboxed.isPinned arrContents
854793 then Unboxed.pinnedNew newCapMaxInBytes
855794 else Unboxed.new newCapMaxInBytes
856795 let !(MutByteArray mbarrFrom#) = arrContents
@@ -890,12 +829,7 @@ reallocExplicitAs ps elemSize newCapacityInBytes MutArray{..} = do
890829-- If the original array is pinned, the newly allocated array is also pinned.
891830{-# INLINABLE realloc #-}
892831realloc :: forall m a. (MonadIO m, Unbox a) => Int -> MutArray a -> m (MutArray a)
893−realloc bytes arr =
894− let ps =
895− if isPinned arr
896− then Pinned
897− else Unpinned
898− in liftIO $ reallocExplicitAs ps (SIZE_OF(a)) bytes arr
832+realloc bytes arr = liftIO $ reallocExplicit (SIZE_OF(a)) bytes arr
899833
900834-- | @reallocWith label capSizer minIncrBytes array@. The label is used
901835-- in error messages and the capSizer is used to determine the capacity of the
@@ -925,7 +859,9 @@ reallocWith label capSizer minIncrBytes arr = do
925859 , ". Please check the sizing function passed."
926860 ]
927861
928−-- | @grow newCapacity array@ changes the total capacity of the array so that
862+-- XXX should be called expand/extend because it never shortens the array.
863+
864+-- | @resize newCapacity array@ changes the total capacity of the array so that
929865-- it is enough to hold the specified number of elements. Nothing is done if
930866-- the specified capacity is less than the length of the array.
931867--
@@ -933,30 +869,24 @@ reallocWith label capSizer minIncrBytes arr = do
933869-- the block size (4K).
934870--
935871-- /Pre-release/
936−{-# INLINE grow #-}
937−grow :: forall m a. (MonadIO m, Unbox a) =>
872+{-# INLINE resize #-}
873+resize :: forall m a. (MonadIO m, Unbox a) =>
938874 Int -> MutArray a -> m (MutArray a)
939−grow nElems arr@MutArray{..} = do
875+resize nElems arr@MutArray{..} = do
940876 let req = SIZE_OF(a) * nElems
941877 cap = arrBound - arrStart
942878 if req < cap
943879 then return arr
944880 else realloc req arr
945881
946−{-# DEPRECATED resize "Please use grow instead." #-}
947−{-# INLINE resize #-}
948−resize :: forall m a. (MonadIO m, Unbox a) =>
949− Int -> MutArray a -> m (MutArray a)
950−resize = grow
951−
952−-- | Like 'grow' but if the requested byte capacity is more than
882+-- | Like 'resize' but if the requested byte capacity is more than
953883-- 'largeObjectThreshold' then it is rounded up to the closest power of 2.
954884--
955885-- /Pre-release/
956−{-# INLINE growExp #-}
957−growExp :: forall m a. (MonadIO m, Unbox a) =>
886+{-# INLINE resizeExp #-}
887+resizeExp :: forall m a. (MonadIO m, Unbox a) =>
958888 Int -> MutArray a -> m (MutArray a)
959−growExp nElems arr@MutArray{..} = do
889+resizeExp nElems arr@MutArray{..} = do
960890 let req = roundUpLargeArray (SIZE_OF(a) * nElems)
961891 req1 =
962892 if req > largeObjectThreshold
@@ -967,12 +897,6 @@ growExp nElems arr@MutArray{..} = do
967897 then return arr
968898 else realloc req1 arr
969899
970−{-# DEPRECATED resizeExp "Please use growExp instead." #-}
971−{-# INLINE resizeExp #-}
972−resizeExp :: forall m a. (MonadIO m, Unbox a) =>
973− Int -> MutArray a -> m (MutArray a)
974−resizeExp = growExp
975−
976900-- | Resize the allocated memory to drop any reserved free space at the end of
977901-- the array and reallocate it to reduce wastage.
978902--
@@ -1117,126 +1041,6 @@ snoc = snocWith f
11171041 then oldSize * 2
11181042 else roundUpToPower2 oldSize * 2
11191043
1120−-------------------------------------------------------------------------------
1121−-- Serialization/Deserialization
1122−-------------------------------------------------------------------------------
1123−
1124−{-# INLINE pokeNewEnd #-}
1125−pokeNewEnd :: (MonadIO m, Unbox a) =>
1126− Int -> MutArray Word8 -> a -> m (MutArray Word8)
1127−pokeNewEnd newEnd arr@MutArray{..} x = liftIO $ do
1128− assert (newEnd <= arrBound) (return ())
1129− liftIO $ pokeAt arrEnd arrContents x
1130− return $ arr {arrEnd = newEnd}
1131−
1132−-- | Really really unsafe, unboxes a Haskell type and appends the resulting
1133−-- bytes to the byte array, may cause silent data corruption or if you are
1134−-- lucky a segfault if the array does not have enough space to append the
1135−-- element.
1136−--
1137−-- /Internal/
1138−{-# INLINE pokeAppendUnsafe #-}
1139−pokeAppendUnsafe :: forall m a. (MonadIO m, Unbox a) =>
1140− MutArray Word8 -> a -> m (MutArray Word8)
1141−pokeAppendUnsafe arr@MutArray{..} = pokeNewEnd (arrEnd + SIZE_OF(a)) arr
1142−
1143−-- | Skip the specified number of bytes in the array. The data in the skipped
1144−-- region remains uninitialzed.
1145−{-# INLINE pokeSkipUnsafe #-}
1146−pokeSkipUnsafe :: Int -> MutArray Word8 -> MutArray Word8
1147−pokeSkipUnsafe n arr@MutArray{..} = do
1148− let newEnd = arrEnd + n
1149− in assert (newEnd <= arrBound) (arr {arrEnd = newEnd})
1150−
1151−-- | Like 'pokeAppend' but does not grow the array when pre-allocated array
1152−-- capacity becomes full.
1153−--
1154−-- /Internal/
1155−{-# INLINE pokeAppendMay #-}
1156−pokeAppendMay :: forall m a. (MonadIO m, Unbox a) =>
1157− MutArray Word8 -> a -> m (Maybe (MutArray Word8))
1158−pokeAppendMay arr@MutArray{..} x = liftIO $ do
1159− let newEnd = arrEnd + SIZE_OF(a)
1160− if newEnd <= arrBound
1161− then Just <$> pokeNewEnd newEnd arr x
1162− else return Nothing
1163−
1164−{-# NOINLINE pokeWithRealloc #-}
1165−pokeWithRealloc :: forall m a. (MonadIO m, Unbox a) =>
1166− (Int -> Int)
1167− -> MutArray Word8
1168− -> a
1169− -> m (MutArray Word8)
1170−pokeWithRealloc sizer arr x = do
1171− arr1 <- liftIO $ reallocWith "pokeWithRealloc" sizer (SIZE_OF(a)) arr
1172− pokeAppendUnsafe arr1 x
1173−
1174−{-# INLINE pokeAppendWith #-}
1175−pokeAppendWith :: forall m a. (MonadIO m, Unbox a) =>
1176− (Int -> Int)
1177− -> MutArray Word8
1178− -> a
1179− -> m (MutArray Word8)
1180−pokeAppendWith allocSize arr x = liftIO $ do
1181− let newEnd = arrEnd arr + SIZE_OF(a)
1182− if newEnd <= arrBound arr
1183− then pokeNewEnd newEnd arr x
1184− else pokeWithRealloc allocSize arr x
1185−
1186−-- | Unbox a Haskell type and append the resulting bytes to a mutable byte
1187−-- array. The array is grown exponentially when more space is needed.
1188−--
1189−-- Definition:
1190−--
1191−-- >>> pokeAppend arr x = MutArray.castUnsafe <$> MutArray.snoc (MutArray.castUnsafe arr) x
1192−--
1193−{-# INLINE pokeAppend #-}
1194−pokeAppend :: forall m a. (MonadIO m, Unbox a) =>
1195− MutArray Word8 -> a -> m (MutArray Word8)
1196−pokeAppend = pokeAppendWith f
1197−
1198− where
1199−
1200− f oldSize =
1201− if isPower2 oldSize
1202− then oldSize * 2
1203− else roundUpToPower2 oldSize * 2
1204−
1205−-- | Really really unsafe, create a Haskell value from an unboxed byte array,
1206−-- does not check if the array is big enough, may return garbage or if you are
1207−-- lucky may cause a segfault.
1208−--
1209−-- /Internal/
1210−{-# INLINE peekUnconsUnsafe #-}
1211−peekUnconsUnsafe :: forall m a. (MonadIO m, Unbox a) =>
1212− MutArray Word8 -> m (a, MutArray Word8)
1213−peekUnconsUnsafe MutArray{..} = do
1214− let start1 = arrStart + SIZE_OF(a)
1215− assert (start1 <= arrEnd) (return ())
1216− liftIO $ do
1217− r <- peekAt arrStart arrContents
1218− return (r, MutArray arrContents start1 arrEnd arrBound)
1219−
1220−-- | Discard the specified number of bytes in the array.
1221−{-# INLINE peekSkipUnsafe #-}
1222−peekSkipUnsafe :: Int -> MutArray Word8 -> MutArray Word8
1223−peekSkipUnsafe n MutArray{..} =
1224− let start1 = arrStart + n
1225− in assert (start1 <= arrEnd) (MutArray arrContents start1 arrEnd arrBound)
1226−
1227−-- | Create a Haskell value from its unboxed representation from the head of a
1228−-- byte array, return the value and the remaining array.
1229−{-# INLINE peekUncons #-}
1230−peekUncons :: forall m a. (MonadIO m, Unbox a) =>
1231− MutArray Word8 -> m (Maybe a, MutArray Word8)
1232−peekUncons arr@MutArray{..} = do
1233− let start1 = arrStart + SIZE_OF(a)
1234− if start1 > arrEnd
1235− then return (Nothing, arr)
1236− else liftIO $ do
1237− r <- peekAt arrStart arrContents
1238− return (Just r, MutArray arrContents start1 arrEnd arrBound)
1239−
12401044-------------------------------------------------------------------------------
12411045-- Random reads
12421046-------------------------------------------------------------------------------
@@ -1302,7 +1106,6 @@ indexReaderWith liftio (D.Stream stepi sti) = Unfold step inject
13021106 D.Stop -> return D.Stop
13031107
13041108{-# DEPRECATED getIndicesWith "Please use indexReaderWith instead." #-}
1305−{-# INLINE getIndicesWith #-}
13061109getIndicesWith :: (Monad m, Unbox a) =>
13071110 (forall b. IO b -> m b) -> D.Stream m Int -> Unfold m (MutArray a) a
13081111getIndicesWith = indexReaderWith
@@ -1318,7 +1121,6 @@ indexReader = indexReaderWith liftIO
13181121
13191122-- XXX DO NOT REMOVE, change the signature to use Stream instead of unfold
13201123{-# DEPRECATED getIndices "Please use indexReader instead." #-}
1321−{-# INLINE getIndices #-}
13221124getIndices :: (MonadIO m, Unbox a) => Stream m Int -> Unfold m (MutArray a) a
13231125getIndices = indexReader
13241126
@@ -1615,7 +1417,7 @@ chunksOfAs ps n (D.Stream step state) =
16151417--
16161418-- Same as the following but may be more efficient:
16171419--
1618−-- >>> chunksOf n = Stream.foldMany (MutArray.createOf n)
1420+-- >>> chunksOf n = Stream.foldMany (MutArray.writeN n)
16191421--
16201422-- /Pre-release/
16211423{-# INLINE_NORMAL chunksOf #-}
@@ -1624,14 +1426,14 @@ chunksOf :: forall m a. (MonadIO m, Unbox a)
16241426-- XXX the idiomatic implementation leads to large regression in the D.reverse'
16251427-- benchmark. It seems it has difficulty producing optimized code when
16261428-- converting to StreamK. Investigate GHC optimizations.
1627−-- chunksOf n = D.foldMany (createOf n)
1429+-- chunksOf n = D.foldMany (writeN n)
16281430chunksOf = chunksOfAs Unpinned
16291431
16301432-- | Like 'chunksOf' but creates pinned arrays.
16311433{-# INLINE_NORMAL pinnedChunksOf #-}
16321434pinnedChunksOf :: forall m a. (MonadIO m, Unbox a)
16331435 => Int -> D.Stream m a -> D.Stream m (MutArray a)
1634−-- pinnedChunksOf n = D.foldMany (pinnedCreateOf n)
1436+-- pinnedChunksOf n = D.foldMany (pinnedWriteN n)
16351437pinnedChunksOf = chunksOfAs Pinned
16361438
16371439-- | When we are buffering a stream of unknown size into an array we do not
@@ -1664,10 +1466,16 @@ data FlattenState s contents a =
16641466 OuterLoop s
16651467 | InnerLoop s contents !Int !Int
16661468
1667−{-# INLINE_NORMAL concatWith #-}
1668−concatWith :: forall m a. (Monad m, Unbox a)
1669− => (forall b. IO b -> m b) -> D.Stream m (MutArray a) -> D.Stream m a
1670−concatWith liftio (D.Stream step state) = D.Stream step' (OuterLoop state)
1469+-- | Use the "reader" unfold instead.
1470+--
1471+-- @concat = unfoldMany reader@
1472+--
1473+-- We can try this if there are any fusion issues in the unfold.
1474+--
1475+{-# INLINE_NORMAL concat #-}
1476+concat :: forall m a. (MonadIO m, Unbox a)
1477+ => D.Stream m (MutArray a) -> D.Stream m a
1478+concat (D.Stream step state) = D.Stream step' (OuterLoop state)
16711479
16721480 where
16731481
@@ -1684,30 +1492,24 @@ concatWith liftio (D.Stream step state) = D.Stream step' (OuterLoop state)
16841492 return $ D.Skip $ OuterLoop st
16851493
16861494 step' _ (InnerLoop st contents p end) = do
1687− x <- liftio $ peekAt p contents
1495+ x <- liftIO $ peekAt p contents
16881496 return $ D.Yield x (InnerLoop st contents (INDEX_NEXT(p,a)) end)
16891497
1690−-- | Use the "reader" unfold instead.
1691−--
1692−-- @concat = unfoldMany reader@
1693−--
1694−-- We can try this if there are any fusion issues in the unfold.
1695−--
1696−{-# INLINE_NORMAL concat #-}
1697−concat :: forall m a. (MonadIO m, Unbox a)
1698− => D.Stream m (MutArray a) -> D.Stream m a
1699−concat = concatWith liftIO
1700−
17011498{-# DEPRECATED flattenArrays "Please use \"unfoldMany reader\" instead." #-}
1702−{-# INLINE flattenArrays #-}
17031499flattenArrays :: forall m a. (MonadIO m, Unbox a)
17041500 => D.Stream m (MutArray a) -> D.Stream m a
17051501flattenArrays = concat
17061502
1707−{-# INLINE_NORMAL concatRevWith #-}
1708−concatRevWith :: forall m a. (Monad m, Unbox a)
1709− => (forall b. IO b -> m b) -> D.Stream m (MutArray a) -> D.Stream m a
1710−concatRevWith liftio (D.Stream step state) = D.Stream step' (OuterLoop state)
1503+-- | Use the "readerRev" unfold instead.
1504+--
1505+-- @concat = unfoldMany readerRev@
1506+--
1507+-- We can try this if there are any fusion issues in the unfold.
1508+--
1509+{-# INLINE_NORMAL concatRev #-}
1510+concatRev :: forall m a. (MonadIO m, Unbox a)
1511+ => D.Stream m (MutArray a) -> D.Stream m a
1512+concatRev (D.Stream step state) = D.Stream step' (OuterLoop state)
17111513
17121514 where
17131515
@@ -1725,23 +1527,11 @@ concatRevWith liftio (D.Stream step state) = D.Stream step' (OuterLoop state)
17251527 return $ D.Skip $ OuterLoop st
17261528
17271529 step' _ (InnerLoop st contents p start) = do
1728− x <- liftio $ peekAt p contents
1530+ x <- liftIO $ peekAt p contents
17291531 let cur = INDEX_PREV(p,a)
17301532 return $ D.Yield x (InnerLoop st contents cur start)
17311533
1732−-- | Use the "readerRev" unfold instead.
1733−--
1734−-- @concat = unfoldMany readerRev@
1735−--
1736−-- We can try this if there are any fusion issues in the unfold.
1737−--
1738−{-# INLINE_NORMAL concatRev #-}
1739−concatRev :: forall m a. (MonadIO m, Unbox a)
1740− => D.Stream m (MutArray a) -> D.Stream m a
1741−concatRev = concatRevWith liftIO
1742−
17431534{-# DEPRECATED flattenArraysRev "Please use \"unfoldMany readerRev\" instead." #-}
1744−{-# INLINE flattenArraysRev #-}
17451535flattenArraysRev :: forall m a. (MonadIO m, Unbox a)
17461536 => D.Stream m (MutArray a) -> D.Stream m a
17471537flattenArraysRev = concatRev
@@ -1973,7 +1763,7 @@ foldr f z arr = D.foldr f z $ read arr
19731763
19741764-- XXX Keep the bound intact to not lose any free space? Perf impact?
19751765
1976−-- | @unsafeAppendN n arr@ appends up to @n@ input items to the supplied
1766+-- | @writeAppendNUnsafe n arr@ appends up to @n@ input items to the supplied
19771767-- array.
19781768--
19791769-- Unsafe: Do not drive the fold beyond @n@ elements, it will lead to memory
@@ -1982,12 +1772,13 @@ foldr f z arr = D.foldr f z $ read arr
19821772-- Any free space left in the array after appending @n@ elements is lost.
19831773--
19841774-- /Internal/
1985−{-# INLINE_NORMAL unsafeAppendN #-}
1986−unsafeAppendN :: forall m a. (MonadIO m, Unbox a) =>
1775+{-# INLINE_NORMAL writeAppendNUnsafe #-}
1776+writeAppendNUnsafe :: forall m a. (MonadIO m, Unbox a) =>
19871777 Int
19881778 -> m (MutArray a)
19891779 -> Fold m a (MutArray a)
1990−unsafeAppendN n action = fmap fromArrayUnsafe $ FL.foldlM' step initial
1780+writeAppendNUnsafe n action =
1781+ fmap fromArrayUnsafe $ FL.foldlM' step initial
19911782
19921783 where
19931784
@@ -2000,7 +1791,7 @@ unsafeAppendN n action = fmap fromArrayUnsafe $ FL.foldlM' step initial
20001791 -- otherwise we lose that space.
20011792 arr1 <-
20021793 if free < needed
2003− then noinline reallocWith "unsafeAppendN" (+ needed) needed arr
1794+ then noinline reallocWith "writeAppendNUnsafeWith" (+ needed) needed arr
20041795 else return arr
20051796 return $ toArrayUnsafe arr1
20061797
@@ -2008,51 +1799,30 @@ unsafeAppendN n action = fmap fromArrayUnsafe $ FL.foldlM' step initial
20081799 liftIO $ pokeAt end contents x
20091800 return $ ArrayUnsafe contents start (INDEX_NEXT(end,a))
20101801
2011−{-# DEPRECATED writeAppendNUnsafe "Please use unsafeAppendN instead." #-}
2012−{-# INLINE writeAppendNUnsafe #-}
2013−writeAppendNUnsafe :: forall m a. (MonadIO m, Unbox a) =>
2014− Int
2015− -> m (MutArray a)
2016− -> Fold m a (MutArray a)
2017−writeAppendNUnsafe = unsafeAppendN
2018−
20191802-- | Append @n@ elements to an existing array. Any free space left in the array
20201803-- after appending @n@ elements is lost.
20211804--
2022−-- >>> appendN n initial = Fold.take n (MutArray.unsafeAppendN n initial)
1805+-- >>> writeAppendN n initial = Fold.take n (MutArray.writeAppendNUnsafe n initial)
20231806--
2024−{-# INLINE_NORMAL appendN #-}
2025−appendN :: forall m a. (MonadIO m, Unbox a) =>
2026− Int -> m (MutArray a) -> Fold m a (MutArray a)
2027−appendN n initial = FL.take n (unsafeAppendN n initial)
2028−
2029−-- XXX Deprecate in major
2030−-- {-# DEPRECATED writeAppendN "Please use appendN instead." #-}
2031−{-# INLINE writeAppendN #-}
1807+{-# INLINE_NORMAL writeAppendN #-}
20321808writeAppendN :: forall m a. (MonadIO m, Unbox a) =>
20331809 Int -> m (MutArray a) -> Fold m a (MutArray a)
2034−writeAppendN = appendN
1810+writeAppendN n initial = FL.take n (writeAppendNUnsafe n initial)
20351811
2036−-- | @appendWith realloc action@ mutates the array generated by @action@ to
1812+-- | @writeAppendWith realloc action@ mutates the array generated by @action@ to
20371813-- append the input stream. If there is no reserved space available in the
20381814-- array it is reallocated to a size in bytes determined by @realloc oldSize@,
20391815-- where @oldSize@ is the current size of the array in bytes.
20401816--
20411817-- Note that the returned array may be a mutated version of original array.
20421818--
2043−-- >>> appendWith sizer = Fold.foldlM' (MutArray.snocWith sizer)
1819+-- >>> writeAppendWith sizer = Fold.foldlM' (MutArray.snocWith sizer)
20441820--
20451821-- /Pre-release/
2046−{-# INLINE appendWith #-}
2047−appendWith :: forall m a. (MonadIO m, Unbox a) =>
2048− (Int -> Int) -> m (MutArray a) -> Fold m a (MutArray a)
2049−appendWith sizer = FL.foldlM' (snocWith sizer)
2050−
2051−{-# DEPRECATED writeAppendWith "Please use appendWith instead." #-}
20521822{-# INLINE writeAppendWith #-}
20531823writeAppendWith :: forall m a. (MonadIO m, Unbox a) =>
20541824 (Int -> Int) -> m (MutArray a) -> Fold m a (MutArray a)
2055−writeAppendWith = appendWith
1825+writeAppendWith sizer = FL.foldlM' (snocWith sizer)
20561826
20571827-- | @append action@ mutates the array generated by @action@ to append the
20581828-- input stream. If there is no reserved space available in the array it is
@@ -2060,33 +1830,26 @@ writeAppendWith = appendWith
20601830--
20611831-- Note that the returned array may be a mutated version of original array.
20621832--
2063−-- >>> append = MutArray.appendWith (* 2)
1833+-- >>> writeAppend = MutArray.writeAppendWith (* 2)
20641834--
2065−{-# INLINE append #-}
2066−append :: forall m a. (MonadIO m, Unbox a) =>
2067− m (MutArray a) -> Fold m a (MutArray a)
2068−append = appendWith (* 2)
2069−
2070−-- XXX Deprecate in major
2071−-- {-# DEPRECATED writeAppend "Please use append instead." #-}
20721835{-# INLINE writeAppend #-}
20731836writeAppend :: forall m a. (MonadIO m, Unbox a) =>
20741837 m (MutArray a) -> Fold m a (MutArray a)
2075−writeAppend = append
1838+writeAppend = writeAppendWith (* 2)
20761839
20771840-- XXX We can carry bound as well in the state to make sure we do not lose the
20781841-- remaining capacity. Need to check perf impact.
20791842--
2080−-- | Like 'unsafeCreateOf' but takes a new array allocator @alloc size@
2081−-- function as argument.
1843+-- | Like 'writeNUnsafe' but takes a new array allocator @alloc size@ function
1844+-- as argument.
20821845--
2083−-- >>> unsafeCreateOfWith alloc n = MutArray.unsafeAppendN (alloc n) n
1846+-- >>> writeNWithUnsafe alloc n = MutArray.writeAppendNUnsafe (alloc n) n
20841847--
20851848-- /Pre-release/
2086−{-# INLINE_NORMAL unsafeCreateOfWith #-}
2087−unsafeCreateOfWith :: forall m a. (MonadIO m, Unbox a)
1849+{-# INLINE_NORMAL writeNWithUnsafe #-}
1850+writeNWithUnsafe :: forall m a. (MonadIO m, Unbox a)
20881851 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
2089−unsafeCreateOfWith alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
1852+writeNWithUnsafe alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
20901853
20911854 where
20921855
@@ -2097,64 +1860,40 @@ unsafeCreateOfWith alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
20971860 return
20981861 $ ArrayUnsafe contents start (INDEX_NEXT(end,a))
20991862
2100−{-# DEPRECATED writeNWithUnsafe "Please use unsafeCreateOfWith instead." #-}
2101−{-# INLINE writeNWithUnsafe #-}
2102−writeNWithUnsafe :: forall m a. (MonadIO m, Unbox a)
2103− => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
2104−writeNWithUnsafe = unsafeCreateOfWith
2105−
21061863{-# INLINE_NORMAL writeNUnsafeAs #-}
21071864writeNUnsafeAs :: forall m a. (MonadIO m, Unbox a)
21081865 => PinnedState -> Int -> Fold m a (MutArray a)
2109−writeNUnsafeAs ps = unsafeCreateOfWith (newAs ps)
1866+writeNUnsafeAs ps = writeNWithUnsafe (newAs ps)
21101867
2111−-- | Like 'createOf' but does not check the array bounds when writing. The fold
1868+-- | Like 'writeN' but does not check the array bounds when writing. The fold
21121869-- driver must not call the step function more than 'n' times otherwise it will
21131870-- corrupt the memory and crash. This function exists mainly because any
21141871-- conditional in the step function blocks fusion causing 10x performance
21151872-- slowdown.
21161873--
2117−-- >>> unsafeCreateOf = MutArray.unsafeCreateOfWith MutArray.emptyOf
1874+-- >>> writeNUnsafe = MutArray.writeNWithUnsafe MutArray.new
21181875--
2119−{-# INLINE_NORMAL unsafeCreateOf #-}
2120−unsafeCreateOf :: forall m a. (MonadIO m, Unbox a)
2121− => Int -> Fold m a (MutArray a)
2122−unsafeCreateOf = writeNUnsafeAs Unpinned
2123−
2124−{-# DEPRECATED writeNUnsafe "Please use unsafeCreateOf instead." #-}
2125−{-# INLINE writeNUnsafe #-}
1876+{-# INLINE_NORMAL writeNUnsafe #-}
21261877writeNUnsafe :: forall m a. (MonadIO m, Unbox a)
21271878 => Int -> Fold m a (MutArray a)
2128−writeNUnsafe = unsafeCreateOf
2129−
2130−-- | Like 'unsafeCreateOf' but creates a pinned array.
2131−{-# INLINE_NORMAL unsafePinnedCreateOf #-}
2132−unsafePinnedCreateOf :: forall m a. (MonadIO m, Unbox a)
2133− => Int -> Fold m a (MutArray a)
2134−unsafePinnedCreateOf = writeNUnsafeAs Pinned
1879+writeNUnsafe = writeNUnsafeAs Unpinned
21351880
2136−{-# DEPRECATED pinnedWriteNUnsafe "Please use unsafePinnedCreateOf instead." #-}
2137−{-# INLINE pinnedWriteNUnsafe #-}
1881+-- | Like 'writeNUnsafe' but creates a pinned array.
1882+{-# INLINE_NORMAL pinnedWriteNUnsafe #-}
21381883pinnedWriteNUnsafe :: forall m a. (MonadIO m, Unbox a)
21391884 => Int -> Fold m a (MutArray a)
2140−pinnedWriteNUnsafe = unsafePinnedCreateOf
1885+pinnedWriteNUnsafe = writeNUnsafeAs Pinned
21411886
2142−-- | @createOfWith alloc n@ folds a maximum of @n@ elements into an array
1887+-- | @writeNWith alloc n@ folds a maximum of @n@ elements into an array
21431888-- allocated using the @alloc@ function.
21441889--
2145−-- >>> createOfWith alloc n = Fold.take n (MutArray.unsafeCreateOfWith alloc n)
2146−-- >>> createOfWith alloc n = MutArray.appendN (alloc n) n
1890+-- >>> writeNWith alloc n = Fold.take n (MutArray.writeNWithUnsafe alloc n)
1891+-- >>> writeNWith alloc n = MutArray.writeAppendN (alloc n) n
21471892--
2148−{-# INLINE_NORMAL createOfWith #-}
2149−createOfWith :: forall m a. (MonadIO m, Unbox a)
2150− => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
2151−createOfWith alloc n = FL.take n (unsafeCreateOfWith alloc n)
2152−
2153−-- {-# DEPRECATED writeNWith "Please use createOfWith instead." #-}
2154−{-# INLINE writeNWith #-}
1893+{-# INLINE_NORMAL writeNWith #-}
21551894writeNWith :: forall m a. (MonadIO m, Unbox a)
21561895 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
2157−writeNWith = createOfWith
1896+writeNWith alloc n = FL.take n (writeNWithUnsafe alloc n)
21581897
21591898{-# INLINE_NORMAL writeNAs #-}
21601899writeNAs ::
@@ -2162,42 +1901,28 @@ writeNAs ::
21621901 => PinnedState
21631902 -> Int
21641903 -> Fold m a (MutArray a)
2165−writeNAs ps = createOfWith (newAs ps)
1904+writeNAs ps = writeNWith (newAs ps)
21661905
2167−-- | @createOf n@ folds a maximum of @n@ elements from the input stream to an
1906+-- | @writeN n@ folds a maximum of @n@ elements from the input stream to an
21681907-- 'MutArray'.
21691908--
2170−-- >>> createOf = MutArray.createOfWith MutArray.new
2171−-- >>> createOf n = Fold.take n (MutArray.unsafeCreateOf n)
2172−-- >>> createOf n = MutArray.appendN n (MutArray.emptyOf n)
1909+-- >>> writeN = MutArray.writeNWith MutArray.new
1910+-- >>> writeN n = Fold.take n (MutArray.writeNUnsafe n)
1911+-- >>> writeN n = MutArray.writeAppendN n (MutArray.new n)
21731912--
2174−{-# INLINE_NORMAL createOf #-}
2175−createOf :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2176−createOf = writeNAs Unpinned
2177−
2178−-- XXX Deprecate in major
2179−-- {-# DEPRECATED writeN "Please use createOf instead." #-}
2180−{-# INLINE writeN #-}
1913+{-# INLINE_NORMAL writeN #-}
21811914writeN :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2182−writeN = createOf
1915+writeN = writeNAs Unpinned
21831916
2184−-- | Like 'createOf' but creates a pinned array.
2185−{-# INLINE_NORMAL pinnedCreateOf #-}
2186−pinnedCreateOf ::
2187− forall m a. (MonadIO m, Unbox a)
2188− => Int
2189− -> Fold m a (MutArray a)
2190−pinnedCreateOf = writeNAs Pinned
2191−
2192−{-# DEPRECATED pinnedWriteN "Please use pinnedCreateOf instead." #-}
2193−{-# INLINE pinnedWriteN #-}
1917+-- | Like 'writeN' but creates a pinned array.
1918+{-# INLINE_NORMAL pinnedWriteN #-}
21941919pinnedWriteN ::
21951920 forall m a. (MonadIO m, Unbox a)
21961921 => Int
21971922 -> Fold m a (MutArray a)
2198−pinnedWriteN = pinnedCreateOf
1923+pinnedWriteN = writeNAs Pinned
21991924
2200−-- | Like unsafeCreateOfWith but writes the array in reverse order.
1925+-- | Like writeNWithUnsafe but writes the array in reverse order.
22011926--
22021927-- /Internal/
22031928{-# INLINE_NORMAL writeRevNWithUnsafe #-}
@@ -2218,7 +1943,7 @@ writeRevNWithUnsafe alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
22181943 return
22191944 $ ArrayUnsafe contents ptr end
22201945
2221−-- | Like createOfWith but writes the array in reverse order.
1946+-- | Like writeNWith but writes the array in reverse order.
22221947--
22231948-- /Internal/
22241949{-# INLINE_NORMAL writeRevNWith #-}
@@ -2226,36 +1951,31 @@ writeRevNWith :: forall m a. (MonadIO m, Unbox a)
22261951 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
22271952writeRevNWith alloc n = FL.take n (writeRevNWithUnsafe alloc n)
22281953
2229−-- | Like 'createOf' but writes the array in reverse order.
1954+-- | Like writeN but writes the array in reverse order.
22301955--
22311956-- /Pre-release/
2232−{-# INLINE_NORMAL revCreateOf #-}
2233−revCreateOf :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2234−revCreateOf = writeRevNWith new
2235−
2236−{-# DEPRECATED writeRevN "Please use revCreateOf instead." #-}
2237−{-# INLINE writeRevN #-}
1957+{-# INLINE_NORMAL writeRevN #-}
22381958writeRevN :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2239−writeRevN = revCreateOf
1959+writeRevN = writeRevNWith new
22401960
22411961-- | @pinnedWriteNAligned align n@ folds a maximum of @n@ elements from the
22421962-- input stream to a 'MutArray' aligned to the given size.
22431963--
2244−-- >>> pinnedWriteNAligned align = MutArray.createOfWith (MutArray.pinnedNewAligned align)
2245−-- >>> pinnedWriteNAligned align n = MutArray.appendN n (MutArray.pinnedNewAligned align n)
1964+-- >>> pinnedWriteNAligned align = MutArray.writeNWith (MutArray.pinnedNewAligned align)
1965+-- >>> pinnedWriteNAligned align n = MutArray.writeAppendN n (MutArray.pinnedNewAligned align n)
22461966--
22471967-- /Pre-release/
22481968--
22491969{-# INLINE_NORMAL pinnedWriteNAligned #-}
22501970pinnedWriteNAligned :: forall m a. (MonadIO m, Unbox a)
22511971 => Int -> Int -> Fold m a (MutArray a)
2252−pinnedWriteNAligned align = createOfWith (pinnedNewAligned align)
1972+pinnedWriteNAligned align = writeNWith (pinnedNewAligned align)
22531973
22541974-- XXX Buffer to a list instead?
22551975
22561976-- | Buffer a stream into a stream of arrays.
22571977--
2258−-- >>> buildChunks n = Fold.many (MutArray.createOf n) Fold.toStreamK
1978+-- >>> buildChunks n = Fold.many (MutArray.writeN n) Fold.toStreamK
22591979--
22601980-- Breaking an array into an array stream can be useful to consume a large
22611981-- array sequentially such that memory of the array is released incrementatlly.
@@ -2267,10 +1987,9 @@ pinnedWriteNAligned align = createOfWith (pinnedNewAligned align)
22671987{-# INLINE_NORMAL buildChunks #-}
22681988buildChunks :: (MonadIO m, Unbox a) =>
22691989 Int -> Fold m a (StreamK n (MutArray a))
2270−buildChunks n = FL.many (createOf n) FL.toStreamK
1990+buildChunks n = FL.many (writeN n) FL.toStreamK
22711991
22721992{-# DEPRECATED writeChunks "Please use buildChunks instead." #-}
2273−{-# INLINE writeChunks #-}
22741993writeChunks :: (MonadIO m, Unbox a) =>
22751994 Int -> Fold m a (StreamK n (MutArray a))
22761995writeChunks = buildChunks
@@ -2278,29 +1997,29 @@ writeChunks = buildChunks
22781997{-# INLINE_NORMAL writeWithAs #-}
22791998writeWithAs :: forall m a. (MonadIO m, Unbox a)
22801999 => PinnedState -> Int -> Fold m a (MutArray a)
2281−-- writeWithAs ps n = FL.rmapM rightSize $ appendWith (* 2) (newAs ps n)
2000+-- writeWithAs ps n = FL.rmapM rightSize $ writeAppendWith (* 2) (newAs ps n)
22822001writeWithAs ps elemCount =
22832002 FL.rmapM extract $ FL.foldlM' step initial
22842003
22852004 where
22862005
22872006 initial = do
2288− when (elemCount < 0) $ error "createWith: elemCount is negative"
2007+ when (elemCount < 0) $ error "writeWith: elemCount is negative"
22892008 newAs ps elemCount
22902009
22912010 step arr@(MutArray _ start end bound) x
22922011 | INDEX_NEXT(end,a) > bound = do
22932012 let oldSize = end - start
22942013 newSize = max (oldSize * 2) 1
2295− arr1 <- liftIO $ reallocExplicitAs ps (SIZE_OF(a)) newSize arr
2014+ arr1 <- liftIO $ reallocExplicit (SIZE_OF(a)) newSize arr
22962015 snocUnsafe arr1 x
22972016 step arr x = snocUnsafe arr x
22982017
22992018 extract = liftIO . rightSize
23002019
2301−-- XXX Compare createWith with fromStreamD which uses an array of streams
2020+-- XXX Compare writeWith with fromStreamD which uses an array of streams
23022021-- implementation. We can write this using buildChunks above if that is faster.
2303−-- If createWith is faster then we should use that to implement
2022+-- If writeWith is faster then we should use that to implement
23042023-- fromStreamD.
23052024--
23062025-- XXX The realloc based implementation needs to make one extra copy if we use
@@ -2315,56 +2034,39 @@ writeWithAs ps elemCount =
23152034-- XXX check if GHC's memory allocator is efficient enough. We can try the C
23162035-- malloc to compare against.
23172036
2318−-- | @createWith minCount@ folds the whole input to a single array. The array
2037+-- | @writeWith minCount@ folds the whole input to a single array. The array
23192038-- starts at a size big enough to hold minCount elements, the size is doubled
23202039-- every time the array needs to be grown.
23212040--
23222041-- /Caution! Do not use this on infinite streams./
23232042--
2324−-- >>> f n = MutArray.appendWith (* 2) (MutArray.emptyOf n)
2325−-- >>> createWith n = Fold.rmapM MutArray.rightSize (f n)
2326−-- >>> createWith n = Fold.rmapM MutArray.fromChunksK (MutArray.buildChunks n)
2043+-- >>> f n = MutArray.writeAppendWith (* 2) (MutArray.new n)
2044+-- >>> writeWith n = Fold.rmapM MutArray.rightSize (f n)
2045+-- >>> writeWith n = Fold.rmapM MutArray.fromChunksK (MutArray.buildChunks n)
23272046--
23282047-- /Pre-release/
2329−{-# INLINE_NORMAL createWith #-}
2330−createWith :: forall m a. (MonadIO m, Unbox a)
2331− => Int -> Fold m a (MutArray a)
2332−-- createWith n = FL.rmapM rightSize $ appendWith (* 2) (emptyOf n)
2333−createWith = writeWithAs Unpinned
2334−
2335−{-# DEPRECATED writeWith "Please use createWith instead." #-}
2336−{-# INLINE writeWith #-}
2048+{-# INLINE_NORMAL writeWith #-}
23372049writeWith :: forall m a. (MonadIO m, Unbox a)
23382050 => Int -> Fold m a (MutArray a)
2339−writeWith = createWith
2051+-- writeWith n = FL.rmapM rightSize $ writeAppendWith (* 2) (new n)
2052+writeWith = writeWithAs Unpinned
23402053
23412054-- | Fold the whole input to a single array.
23422055--
2343−-- Same as 'createWith' using an initial array size of 'arrayChunkBytes' bytes
2056+-- Same as 'writeWith' using an initial array size of 'arrayChunkBytes' bytes
23442057-- rounded up to the element size.
23452058--
23462059-- /Caution! Do not use this on infinite streams./
23472060--
2348−{-# INLINE create #-}
2349−create :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2350−create = createWith (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
2351−
2352−-- XXX Deprecate in major
2353−-- {-# DEPRECATED write "Please use create instead." #-}
23542061{-# INLINE write #-}
23552062write :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2356−write = create
2063+write = writeWith (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
23572064
2358−-- | Like 'create' but creates a pinned array.
2359−{-# INLINE pinnedCreate #-}
2360−pinnedCreate :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2361−pinnedCreate =
2362− writeWithAs Pinned (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
2363−
2364−{-# DEPRECATED pinnedWrite "Please use pinnedCreate instead." #-}
2065+-- | Like 'write' but creates a pinned array.
23652066{-# INLINE pinnedWrite #-}
23662067pinnedWrite :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2367−pinnedWrite = pinnedCreate
2068+pinnedWrite =
2069+ writeWithAs Pinned (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
23682070
23692071-------------------------------------------------------------------------------
23702072-- construct from streams, known size
@@ -2384,18 +2086,17 @@ fromStreamDNAs ps limit str = do
23842086 liftIO $ pokeAt ptr arrContents x
23852087 return $ INDEX_NEXT(ptr,a)
23862088
2387−-- | Use the 'createOf' fold instead.
2089+-- | Use the 'writeN' fold instead.
23882090--
2389−-- >>> fromStreamN n = Stream.fold (MutArray.createOf n)
2091+-- >>> fromStreamN n = Stream.fold (MutArray.writeN n)
23902092--
23912093{-# INLINE_NORMAL fromStreamN #-}
23922094fromStreamN :: forall m a. (MonadIO m, Unbox a)
23932095 => Int -> D.Stream m a -> m (MutArray a)
2394−-- fromStreamDN n = D.fold (createOf n)
2096+-- fromStreamDN n = D.fold (writeN n)
23952097fromStreamN = fromStreamDNAs Unpinned
23962098
23972099{-# DEPRECATED fromStreamDN "Please use fromStreamN instead." #-}
2398−{-# INLINE fromStreamDN #-}
23992100fromStreamDN :: forall m a. (MonadIO m, Unbox a)
24002101 => Int -> D.Stream m a -> m (MutArray a)
24012102fromStreamDN = fromStreamN
@@ -2418,20 +2119,20 @@ pinnedFromListN n xs = fromStreamDNAs Pinned n $ D.fromList xs
24182119-- /Pre-release/
24192120{-# INLINE fromListRevN #-}
24202121fromListRevN :: (MonadIO m, Unbox a) => Int -> [a] -> m (MutArray a)
2421−fromListRevN n xs = D.fold (revCreateOf n) $ D.fromList xs
2122+fromListRevN n xs = D.fold (writeRevN n) $ D.fromList xs
24222123
24232124-- | Convert a pure stream in Identity monad to a mutable array.
24242125{-# INLINABLE fromPureStreamN #-}
24252126fromPureStreamN :: (MonadIO m, Unbox a) =>
24262127 Int -> Stream Identity a -> m (MutArray a)
24272128fromPureStreamN n xs =
2428− D.fold (createOf n) $ D.morphInner (return . runIdentity) xs
2129+ D.fold (writeN n) $ D.morphInner (return . runIdentity) xs
24292130
24302131-- | Convert a pure stream in Identity monad to a mutable array.
24312132{-# INLINABLE fromPureStream #-}
24322133fromPureStream :: (MonadIO m, Unbox a) => Stream Identity a -> m (MutArray a)
24332134fromPureStream xs =
2434− D.fold create $ D.morphInner (return . runIdentity) xs
2135+ D.fold write $ D.morphInner (return . runIdentity) xs
24352136
24362137{-# INLINABLE fromPtrN #-}
24372138fromPtrN :: MonadIO m => Int -> Ptr Word8 -> m (MutArray Word8)
@@ -2440,7 +2141,7 @@ fromPtrN len addr = do
24402141 -- XXX We can implement a stream copy in a similar way by streaming Word64
24412142 -- first and then remaining Word8.
24422143 arr <- new len
2443− _ <- unsafeAsPtr arr
2144+ _ <- asUnpinnedPtrUnsafe arr
24442145 (\ptr -> liftIO $ c_memcpy ptr addr (fromIntegral len))
24452146 return (arr {arrEnd = len})
24462147
@@ -2456,7 +2157,7 @@ fromByteStr# addr = do
24562157 len <- liftIO $ c_strlen (Ptr addr)
24572158 let lenInt = fromIntegral len
24582159 arr <- new lenInt
2459− _ <- unsafeAsPtr arr (\ptr -> liftIO $ c_memcpy ptr (Ptr addr) len)
2160+ _ <- asUnpinnedPtrUnsafe arr (\ptr -> liftIO $ c_memcpy ptr (Ptr addr) len)
24602161 return (arr {arrEnd = lenInt})
24612162
24622163-------------------------------------------------------------------------------
@@ -2515,7 +2216,6 @@ fromChunksK :: (Unbox a, MonadIO m) =>
25152216fromChunksK = fromChunkskAs Unpinned
25162217
25172218{-# DEPRECATED fromArrayStreamK "Please use fromChunksK instead." #-}
2518−{-# INLINE fromArrayStreamK #-}
25192219fromArrayStreamK :: (Unbox a, MonadIO m) =>
25202220 StreamK m (MutArray a) -> m (MutArray a)
25212221fromArrayStreamK = fromChunksK
@@ -2527,7 +2227,7 @@ fromStreamDAs ps m =
25272227 arrayStreamKFromStreamDAs Unpinned m >>= fromChunkskAs ps
25282228
25292229-- | Create an 'Array' from a stream. This is useful when we want to create a
2530−-- single array from a stream of unknown size. 'createOf' is at least twice
2230+-- single array from a stream of unknown size. 'writeN' is at least twice
25312231-- as efficient when the size is already known.
25322232--
25332233-- Note that if the input stream is too large memory allocation for the array
@@ -2539,19 +2239,19 @@ fromStreamDAs ps m =
25392239fromStream :: (MonadIO m, Unbox a) => Stream m a -> m (MutArray a)
25402240fromStream = fromStreamDAs Unpinned
25412241
2542−-- fromStream (Stream m) = P.fold create m
2242+-- fromStream (Stream m) = P.fold write m
25432243-- CAUTION: a very large number (millions) of arrays can degrade performance
25442244-- due to GC overhead because we need to buffer the arrays before we flatten
25452245-- all the arrays.
25462246--
2547−-- XXX Compare if this is faster or "fold create".
2247+-- XXX Compare if this is faster or "fold write".
25482248--
25492249-- | We could take the approach of doubling the memory allocation on each
25502250-- overflow. This would result in more or less the same amount of copying as in
25512251-- the chunking approach. However, if we have to shrink in the end then it may
25522252-- result in an extra copy of the entire data.
25532253--
2554−-- >>> fromStreamD = StreamD.fold MutArray.create
2254+-- >>> fromStreamD = StreamD.fold MutArray.write
25552255--
25562256{-# INLINE fromStreamD #-}
25572257{-# DEPRECATED fromStreamD "Please use fromStream instead." #-}
@@ -2581,10 +2281,6 @@ fromListRev xs = fromListRevN (Prelude.length xs) xs
25812281-- Cloning
25822282-------------------------------------------------------------------------------
25832283
2584−-- Arrays are aligned on 64-bit boundaries. The fastest way to copy an array is
2585−-- to unsafeCast it to Word64, read it, write it to Word64 array and unsafeCast
2586−-- it again. We can use SIMD read/write as well.
2587−
25882284{-# INLINE cloneAs #-}
25892285cloneAs ::
25902286 ( MonadIO m
@@ -2676,7 +2372,7 @@ spliceWith :: forall m a. (MonadIO m, Unbox a) =>
26762372 (Int -> Int -> Int) -> MutArray a -> MutArray a -> m (MutArray a)
26772373spliceWith sizer dst@(MutArray _ start end bound) src = do
26782374{-
2679− let f = appendWith (`sizer` byteLength src) (return dst)
2375+ let f = writeAppendWith (`sizer` byteLength src) (return dst)
26802376 in D.fold f (toStreamD src)
26812377-}
26822378 assert (end <= bound) (return ())
@@ -2744,7 +2440,7 @@ splitOn predicate arr =
27442440{-# INLINE breakOn #-}
27452441breakOn :: MonadIO m
27462442 => Word8 -> MutArray Word8 -> m (MutArray Word8, Maybe (MutArray Word8))
2747−breakOn sep arr@MutArray{..} = unsafeAsPtr arr $ \p -> liftIO $ do
2443+breakOn sep arr@MutArray{..} = asUnpinnedPtrUnsafe arr $ \p -> liftIO $ do
27482444 -- XXX We do not need memchr here, we can use a Haskell equivalent.
27492445 -- Need efficient stream based primitives that work on Word64.
27502446 loc <- c_memchr p sep (fromIntegral $ byteLength arr)
@@ -2767,41 +2463,33 @@ breakOn sep arr@MutArray{..} = unsafeAsPtr arr $ \p -> liftIO $ do
27672463 }
27682464 )
27692465
2770−-- | Like 'splitAt' but does not check whether the index is valid.
2771−--
2772−{-# INLINE unsafeSplitAt #-}
2773−unsafeSplitAt :: forall a. Unbox a =>
2774− Int -> MutArray a -> (MutArray a, MutArray a)
2775−unsafeSplitAt i MutArray{..} =
2776− let off = i * SIZE_OF(a)
2777− p = arrStart + off
2778− in ( MutArray
2779− { arrContents = arrContents
2780− , arrStart = arrStart
2781− , arrEnd = p
2782− , arrBound = p
2783− }
2784− , MutArray
2785− { arrContents = arrContents
2786− , arrStart = p
2787− , arrEnd = arrEnd
2788− , arrBound = arrBound
2789− }
2790− )
2791−
27922466-- | Create two slices of an array without copying the original array. The
27932467-- specified index @i@ is the first index of the second slice.
27942468--
27952469{-# INLINE splitAt #-}
27962470splitAt :: forall a. Unbox a => Int -> MutArray a -> (MutArray a, MutArray a)
2797−splitAt i arr =
2471+splitAt i arr@MutArray{..} =
27982472 let maxIndex = length arr - 1
27992473 in if i < 0
28002474 then error "sliceAt: negative array index"
28012475 else if i > maxIndex
28022476 then error $ "sliceAt: specified array index " ++ show i
28032477 ++ " is beyond the maximum index " ++ show maxIndex
2804− else unsafeSplitAt i arr
2478+ else let off = i * SIZE_OF(a)
2479+ p = arrStart + off
2480+ in ( MutArray
2481+ { arrContents = arrContents
2482+ , arrStart = arrStart
2483+ , arrEnd = p
2484+ , arrBound = p
2485+ }
2486+ , MutArray
2487+ { arrContents = arrContents
2488+ , arrStart = p
2489+ , arrEnd = arrEnd
2490+ , arrBound = arrBound
2491+ }
2492+ )
28052493
28062494-------------------------------------------------------------------------------
28072495-- Casting
@@ -2851,13 +2539,9 @@ cast arr =
28512539-- guarantees that unsafe calls will be performed in the calling thread. Making
28522540-- it safe to pass heap-allocated objects to unsafe functions.
28532541
2854−-- XXX Should we just name it asPtr, the unsafety is implicit for any pointer
2542+-- Should we just name it asPtr, the unsafety is implicit for any pointer
28552543-- operations. And we are safe from Haskell perspective because we will be
28562544-- pinning the memory.
2857−--
2858−-- XXX we cannot pass the length of the ptr here as in some cases it may not be
2859−-- available e.g. a null terminated C string. However, we can create another
2860−-- flavor of the API e.g. asPtrN.
28612545
28622546-- | Use a @MutArray a@ as @Ptr a@. This is useful when we want to pass an
28632547-- array as a pointer to some operating system call or to a "safe" FFI call.
@@ -2875,21 +2559,16 @@ cast arr =
28752559--
28762560-- /Pre-release/
28772561--
2878−{-# INLINE unsafePinnedAsPtr #-}
2879−unsafePinnedAsPtr :: MonadIO m => MutArray a -> (Ptr a -> m b) -> m b
2880−unsafePinnedAsPtr arr f =
2881− Unboxed.unsafePinnedAsPtr
2882− (arrContents arr) (\ptr -> f (ptr `plusPtr` arrStart arr))
2883−
2884−{-# DEPRECATED asPtrUnsafe "Please use unsafePinnedAsPtr instead." #-}
28852562{-# INLINE asPtrUnsafe #-}
28862563asPtrUnsafe :: MonadIO m => MutArray a -> (Ptr a -> m b) -> m b
2887−asPtrUnsafe = unsafePinnedAsPtr
2564+asPtrUnsafe arr f =
2565+ Unboxed.asPtrUnsafe
2566+ (arrContents arr) (\ptr -> f (ptr `plusPtr` arrStart arr))
28882567
2889−{-# INLINE unsafeAsPtr #-}
2890−unsafeAsPtr :: MonadIO m => MutArray a -> (Ptr a -> m b) -> m b
2891−unsafeAsPtr arr f =
2892− Unboxed.unsafeAsPtr
2568+{-# INLINE asUnpinnedPtrUnsafe #-}
2569+asUnpinnedPtrUnsafe :: MonadIO m => MutArray a -> (Ptr a -> m b) -> m b
2570+asUnpinnedPtrUnsafe arr f =
2571+ Unboxed.asUnpinnedPtrUnsafe
28932572 (arrContents arr) (\ptr -> f (ptr `plusPtr` arrStart arr))
28942573
28952574-------------------------------------------------------------------------------
@@ -2946,48 +2625,46 @@ byteEq arr1 arr2 = fmap (EQ ==) $ byteCmp arr1 arr2
29462625-- Compact
29472626-------------------------------------------------------------------------------
29482627
2949−-- Note: LE versions avoid an extra copy compared to GE. LE parser trades
2950−-- backtracking one array in lieu of avoiding a copy. However, LE and GE both
2951−-- can leave some memory unused. They can split the last array to fit it
2952−-- exactly in the space.
2953−
2954−{-# INLINE_NORMAL pCompactLeAs #-}
2955−pCompactLeAs ::
2628+-- | Parser @pCompactLE n@ coalesces adjacent arrays in the input stream
2629+-- only if the combined size would be less than or equal to n.
2630+--
2631+-- /Internal/
2632+{-# INLINE_NORMAL pCompactLE #-}
2633+pCompactLE ::
29562634 forall m a. (MonadIO m, Unbox a)
2957− => PinnedState -> Int -> Parser (MutArray a) m (MutArray a)
2958−pCompactLeAs ps maxElems = Parser step initial extract
2635+ => Int -> Parser (MutArray a) m (MutArray a)
2636+pCompactLE n = Parser step initial extract
29592637
29602638 where
29612639
2962− maxBytes = maxElems * SIZE_OF(a)
2640+ nBytes = n * SIZE_OF(a)
29632641
29642642 functionName = "Streamly.Internal.Data.MutArray.pCompactLE"
29652643
29662644 initial =
29672645 return
2968− $ if maxElems <= 0
2646+ $ if n <= 0
29692647 then error
29702648 $ functionName
29712649 ++ ": the size of arrays ["
2972− ++ show maxElems ++ "] must be a natural number"
2650+ ++ show n ++ "] must be a natural number"
29732651 else Parser.IPartial Nothing
29742652
29752653 step Nothing arr =
29762654 return
29772655 $ let len = byteLength arr
2978− in if len >= maxBytes
2656+ in if len >= nBytes
29792657 then Parser.Done 0 arr
29802658 else Parser.Partial 0 (Just arr)
2981− -- XXX Split the last array to use the space more compactly.
29822659 step (Just buf) arr =
29832660 let len = byteLength buf + byteLength arr
2984− in if len > maxBytes
2661+ in if len > nBytes
29852662 then return $ Parser.Done 1 buf
29862663 else do
2664+ -- XXX check this in the Nothing case
29872665 buf1 <-
2988− if byteCapacity buf < maxBytes
2989− then liftIO $ reallocExplicitAs
2990− ps (SIZE_OF(a)) maxBytes buf
2666+ if byteCapacity buf < nBytes
2667+ then liftIO $ realloc nBytes buf
29912668 else return buf
29922669 buf2 <- spliceUnsafe buf1 arr
29932670 return $ Parser.Partial 0 (Just buf2)
@@ -2995,30 +2672,6 @@ pCompactLeAs ps maxElems = Parser step initial extract
29952672 extract Nothing = return $ Parser.Done 0 nil
29962673 extract (Just buf) = return $ Parser.Done 0 buf
29972674
2998−-- | Parser @pCompactLE maxElems@ coalesces adjacent arrays in the input stream
2999−-- only if the combined size would be less than or equal to @maxElems@
3000−-- elements. Note that it won't split an array if the original array is already
3001−-- larger than maxElems.
3002−--
3003−-- @maxElems@ must be greater than 0.
3004−--
3005−-- Generates unpinned arrays irrespective of the pinning status of input
3006−-- arrays.
3007−--
3008−-- /Internal/
3009−{-# INLINE pCompactLE #-}
3010−pCompactLE ::
3011− forall m a. (MonadIO m, Unbox a)
3012− => Int -> Parser (MutArray a) m (MutArray a)
3013−pCompactLE = pCompactLeAs Unpinned
3014−
3015−-- | Pinned version of 'pCompactLE'.
3016−{-# INLINE pPinnedCompactLE #-}
3017−pPinnedCompactLE ::
3018− forall m a. (MonadIO m, Unbox a)
3019− => Int -> Parser (MutArray a) m (MutArray a)
3020−pPinnedCompactLE = pCompactLeAs Pinned
3021−
30222675data SpliceState s arr
30232676 = SpliceInitial s
30242677 | SpliceBuffering s arr
@@ -3030,47 +2683,48 @@ data SpliceState s arr
30302683-- immutable array never has additional space so a new array is allocated
30312684-- instead of mutating it.
30322685
3033−{-# INLINE_NORMAL compactLeAs #-}
3034−compactLeAs :: forall m a. (MonadIO m, Unbox a)
3035− => PinnedState -> Int -> D.Stream m (MutArray a) -> D.Stream m (MutArray a)
3036−compactLeAs ps maxElems (D.Stream step state) =
2686+-- | Scan @rCompactLE n@ coalesces adjacent arrays in the input stream
2687+-- only if the combined size would be less than or equal to n.
2688+--
2689+-- /Internal/
2690+{-# INLINE_NORMAL rCompactLE #-}
2691+rCompactLE :: (MonadIO m, Unbox a)
2692+ => Int -> D.Stream m (MutArray a) -> D.Stream m (MutArray a)
2693+rCompactLE n (D.Stream step state) =
30372694 D.Stream step' (SpliceInitial state)
30382695
30392696 where
30402697
3041− maxBytes = maxElems * SIZE_OF(a)
3042−
30432698 functionName = "Streamly.Internal.Data.MutArray.rCompactLE"
30442699
30452700 {-# INLINE_LATE step' #-}
30462701 step' gst (SpliceInitial st) = do
3047− when (maxElems <= 0) $
2702+ when (n <= 0) $
30482703 -- XXX we can pass the module string from the higher level API
3049− error $ functionName ++ ": the size of arrays [" ++ show maxElems
2704+ error $ functionName ++ ": the size of arrays [" ++ show n
30502705 ++ "] must be a natural number"
30512706 r <- step gst st
30522707 case r of
30532708 D.Yield arr s -> return $
30542709 let len = byteLength arr
3055− in if len >= maxBytes
2710+ in if len >= n
30562711 then D.Skip (SpliceYielding arr (SpliceInitial s))
30572712 else D.Skip (SpliceBuffering s arr)
30582713 D.Skip s -> return $ D.Skip (SpliceInitial s)
30592714 D.Stop -> return D.Stop
30602715
3061− -- XXX Split the last array to use the space more compactly.
30622716 step' gst (SpliceBuffering st buf) = do
30632717 r <- step gst st
30642718 case r of
30652719 D.Yield arr s -> do
30662720 let len = byteLength buf + byteLength arr
3067− if len > maxBytes
2721+ if len > n
30682722 then return $
30692723 D.Skip (SpliceYielding buf (SpliceBuffering s arr))
30702724 else do
3071− buf1 <- if byteCapacity buf < maxBytes
3072− then liftIO $ reallocExplicitAs
3073− ps (SIZE_OF(a)) maxBytes buf
2725+ -- XXX check this in the SpliceInitial case
2726+ buf1 <- if byteCapacity buf < n
2727+ then liftIO $ realloc n buf
30742728 else return buf
30752729 buf2 <- spliceUnsafe buf1 arr
30762730 return $ D.Skip (SpliceBuffering s buf2)
@@ -3081,119 +2735,108 @@ compactLeAs ps maxElems (D.Stream step state) =
30812735
30822736 step' _ (SpliceYielding arr next) = return $ D.Yield arr next
30832737
3084−
3085−{-# INLINE_NORMAL fCompactGeAs #-}
3086−fCompactGeAs ::
2738+-- | Fold @fCompactGE n@ coalesces adjacent arrays in the input stream
2739+-- until the size becomes greater than or equal to n.
2740+--
2741+{-# INLINE_NORMAL fCompactGE #-}
2742+fCompactGE ::
30872743 forall m a. (MonadIO m, Unbox a)
3088− => PinnedState -> Int -> FL.Fold m (MutArray a) (MutArray a)
3089−fCompactGeAs ps minElems = Fold step initial extract extract
2744+ => Int -> FL.Fold m (MutArray a) (MutArray a)
2745+fCompactGE n = Fold step initial extract extract
30902746
30912747 where
30922748
3093− minBytes = minElems * SIZE_OF(a)
2749+ nBytes = n * SIZE_OF(a)
30942750
30952751 functionName = "Streamly.Internal.Data.MutArray.fCompactGE"
30962752
30972753 initial =
30982754 return
3099− $ if minElems < 0
2755+ $ if n < 0
31002756 then error
31012757 $ functionName
31022758 ++ ": the size of arrays ["
3103− ++ show minElems ++ "] must be a natural number"
2759+ ++ show n ++ "] must be a natural number"
31042760 else FL.Partial Nothing
31052761
31062762 step Nothing arr =
31072763 return
31082764 $ let len = byteLength arr
3109− in if len >= minBytes
2765+ in if len >= nBytes
31102766 then FL.Done arr
31112767 else FL.Partial (Just arr)
3112− -- XXX Buffer arrays as a list to avoid copy and reallocations
31132768 step (Just buf) arr = do
31142769 let len = byteLength buf + byteLength arr
31152770 buf1 <-
31162771 if byteCapacity buf < len
3117− then liftIO $ reallocExplicitAs
3118− ps (SIZE_OF(a)) (max minBytes len) buf
2772+ then liftIO $ realloc (max len nBytes) buf
31192773 else return buf
31202774 buf2 <- spliceUnsafe buf1 arr
3121− if len >= minBytes
2775+ if len >= n
31222776 then return $ FL.Done buf2
31232777 else return $ FL.Partial (Just buf2)
31242778
31252779 extract Nothing = return nil
31262780 extract (Just buf) = return buf
31272781
3128−-- | Fold @fCompactGE minElems@ coalesces adjacent arrays in the input stream
3129−-- until the size becomes greater than or equal to @minElems@.
2782+-- | Like 'compactGE' but for transforming folds instead of stream.
31302783--
3131−-- Generates unpinned arrays irrespective of the pinning status of input
3132−-- arrays.
3133−{-# INLINE fCompactGE #-}
3134−fCompactGE ::
3135− forall m a. (MonadIO m, Unbox a)
3136− => Int -> FL.Fold m (MutArray a) (MutArray a)
3137−fCompactGE = fCompactGeAs Unpinned
3138−
3139−-- | Pinned version of 'fCompactGE'.
3140−{-# INLINE fPinnedCompactGE #-}
3141−fPinnedCompactGE ::
3142− forall m a. (MonadIO m, Unbox a)
3143− => Int -> FL.Fold m (MutArray a) (MutArray a)
3144−fPinnedCompactGE = fCompactGeAs Pinned
3145−
3146−{-# INLINE_NORMAL lCompactGeAs #-}
3147−lCompactGeAs :: forall m a. (MonadIO m, Unbox a)
3148− => PinnedState -> Int -> Fold m (MutArray a) () -> Fold m (MutArray a) ()
3149−-- The fold version turns out to be a little bit slower.
3150−-- lCompactGeAs ps n = FL.many (fCompactGeAs ps n)
3151−lCompactGeAs ps minElems (Fold step1 initial1 _ final1) =
2784+-- >>> lCompactGE n = Fold.many (MutArray.fCompactGE n)
2785+--
2786+{-# INLINE_NORMAL lCompactGE #-}
2787+lCompactGE :: (MonadIO m, Unbox a)
2788+ => Int -> Fold m (MutArray a) () -> Fold m (MutArray a) ()
2789+-- lCompactGE n = Fold.many (fCompactGE n)
2790+lCompactGE n (Fold step1 initial1 _ final1) =
31522791 Fold step initial extract final
31532792
31542793 where
31552794
3156− minBytes = minElems * SIZE_OF(a)
3157−
31582795 functionName = "Streamly.Internal.Data.MutArray.lCompactGE"
31592796
31602797 initial = do
3161− when (minElems <= 0) $
2798+ when (n <= 0) $
31622799 -- XXX we can pass the module string from the higher level API
31632800 error $ functionName ++ ": the size of arrays ["
3164− ++ show minElems ++ "] must be a natural number"
2801+ ++ show n ++ "] must be a natural number"
31652802
31662803 r <- initial1
31672804 return $ first (Tuple' Nothing) r
31682805
3169− {-# INLINE runInner #-}
3170− runInner len acc buf =
3171− if len >= minBytes
2806+ step (Tuple' Nothing r1) arr =
2807+ let len = byteLength arr
2808+ in if len >= n
2809+ then do
2810+ r <- step1 r1 arr
2811+ case r of
2812+ FL.Done _ -> return $ FL.Done ()
2813+ FL.Partial s -> do
2814+ _ <- final1 s
2815+ res <- initial1
2816+ return $ first (Tuple' Nothing) res
2817+ else return $ FL.Partial $ Tuple' (Just arr) r1
2818+
2819+ step (Tuple' (Just buf) r1) arr = do
2820+ let len = byteLength buf + byteLength arr
2821+ buf1 <- if byteCapacity buf < len
2822+ then liftIO $ realloc (max n len) buf
2823+ else return buf
2824+ buf2 <- spliceUnsafe buf1 arr
2825+
2826+ -- XXX this is common in both the equations of step
2827+ if len >= n
31722828 then do
3173− r <- step1 acc buf
2829+ r <- step1 r1 buf2
31742830 case r of
31752831 FL.Done _ -> return $ FL.Done ()
31762832 FL.Partial s -> do
31772833 _ <- final1 s
31782834 res <- initial1
31792835 return $ first (Tuple' Nothing) res
3180− else return $ FL.Partial $ Tuple' (Just buf) acc
3181−
3182− step (Tuple' Nothing r1) arr =
3183− runInner (byteLength arr) r1 arr
3184−
3185− -- XXX Buffer arrays as a list to avoid copy and reallocations
3186− step (Tuple' (Just buf) r1) arr = do
3187− let len = byteLength buf + byteLength arr
3188− buf1 <- if byteCapacity buf < len
3189− then liftIO $ reallocExplicitAs
3190− ps (SIZE_OF(a)) (max minBytes len) buf
3191− else return buf
3192− buf2 <- spliceUnsafe buf1 arr
3193− runInner len r1 buf2
2836+ else return $ FL.Partial $ Tuple' (Just buf2) r1
31942837
31952838 -- XXX Several folds do extract >=> final, therefore, we need to make final
3196− -- return "m b" rather than using extract post it if we want extract to be
2839+ -- return "m b" rather than using extract post it if we want extract to be
31972840 -- partial.
31982841 --
31992842 -- extract forces the pending buffer to be sent to the fold which is not
@@ -3207,23 +2850,6 @@ lCompactGeAs ps minElems (Fold step1 initial1 _ final1) =
32072850 FL.Partial rr -> final1 rr
32082851 FL.Done _ -> return ()
32092852
3210−-- | Like 'compactGE' but for transforming folds instead of stream.
3211−--
3212−-- >>> lCompactGE n = Fold.many (MutArray.fCompactGE n)
3213−--
3214−-- Generates unpinned arrays irrespective of the pinning status of input
3215−-- arrays.
3216−{-# INLINE lCompactGE #-}
3217−lCompactGE :: forall m a. (MonadIO m, Unbox a)
3218− => Int -> Fold m (MutArray a) () -> Fold m (MutArray a) ()
3219−lCompactGE = lCompactGeAs Unpinned
3220−
3221−-- | Pinned version of 'lCompactGE'.
3222−{-# INLINE lPinnedCompactGE #-}
3223−lPinnedCompactGE :: forall m a. (MonadIO m, Unbox a)
3224− => Int -> Fold m (MutArray a) () -> Fold m (MutArray a) ()
3225−lPinnedCompactGE = lCompactGeAs Pinned
3226−
32272853-- | @compactGE n stream@ coalesces adjacent arrays in the @stream@ until
32282854-- the size becomes greater than or equal to @n@.
32292855--