@@ -31,57 +31,39 @@ module Streamly.Internal.Data.MutArray.Type
31 -- ** Type
31 -- ** Type
32 -- $arrayNotes
32 -- $arrayNotes
33 MutArray (..)
33 MutArray (..)
35− -- ** Conversion
35+ , MutableByteArray
36− -- *** Pinned and Unpinned
39 , isPinned
38 , isPinned
41− -- ** Casting
40+ -- -- * Constructing and Writing
43− , castUnsafe -- XXX unsafeCast
48 -- ** Construction
41 -- ** Construction
52− -- | New arrays are always empty arrays with some reserve capacity to
53− -- extend the length without reallocating.
55− , newArrayWith -- emptyAlignedWith
57− , pinnedNewAligned -- XXX not required
58− -- , new -- uninitialized array of specified length
64− -- *** Slicing
44+ -- *** Uninitialized Arrays
65− -- | Get a subarray without copying
45+ , pinnedNew
66− , getSliceUnsafe -- XXX unsafeGetSlice
46+ , pinnedNewBytes
67− , getSlice
47+ , pinnedNewAligned
68− , splitAt -- XXX should be able to express using getSlice
48+ , new
69− , breakOn
49+ , newArrayWith
71− -- *** Stream Folds
51+ -- *** From streams
72 , ArrayUnsafe (..)
52 , ArrayUnsafe (..)
73− , unsafeCreateOfWith
53+ , writeNWithUnsafe
74− , unsafeCreateOf
54+ , writeNWith
75− , unsafePinnedCreateOf
55+ , writeNUnsafe
76− , pinnedCreateOf
56+ , pinnedWriteNUnsafe
77− , createOfWith
57+ , writeN
78− , createOf
58+ , pinnedWriteN
79− , revCreateOf
59+ , pinnedWriteNAligned
81− , pinnedCreate
61+ , writeWith
82− , createWith
62+ , write
83− , create
63+ , pinnedWrite
86 -- *** From containers
68 -- *** From containers
87 , fromListN
69 , fromListN
@@ -90,18 +72,14 @@ module Streamly.Internal.Data.MutArray.Type
90 , pinnedFromList
72 , pinnedFromList
91 , fromListRevN
73 , fromListRevN
92 , fromListRev
74 , fromListRev
93− , fromStreamN
75+ , fromStreamDN
94− , fromStream
76+ , fromStreamD
95 , fromPureStreamN
77 , fromPureStreamN
96 , fromPureStream
78 , fromPureStream
100− , fromChunksRealloced -- fromSmallChunks
102 -- ** Random writes
80 -- ** Random writes
103 , putIndex
81 , putIndex
104− , putIndexUnsafe -- XXX unsafePutIndex
82+ , putIndexUnsafe
105 , putIndices
83 , putIndices
106 -- , putFromThenTo
84 -- , putFromThenTo
107 -- , putFrom -- start writing at the given position
85 -- , putFrom -- start writing at the given position
@@ -109,69 +87,76 @@ module Streamly.Internal.Data.MutArray.Type
109 -- , putFromTo
87 -- , putFromTo
110 -- , putFromRev
88 -- , putFromRev
111 -- , putUptoRev
89 -- , putUptoRev
112− , modifyIndexUnsafe -- XXX unsafeModifyIndex
90+ , modifyIndexUnsafe
113 , modifyIndex
91 , modifyIndex
114 , modifyIndices
92 , modifyIndices
116 , swapIndices
94 , swapIndices
117 , unsafeSwapIndices
95 , unsafeSwapIndices
119− -- ** Reading
97+ -- ** Growing and Shrinking
98+ -- | Arrays grow only at the end, though it is possible to grow on both sides
99+ -- and therefore have a cons as well as snoc. But that will require two
100+ -- bounds in the array representation.
121− -- *** Indexing
102+ -- *** Appending elements
122− , getIndex
103+ , snocWith
123− , getIndexUnsafe -- XXX unsafeGetIndex
104+ , snoc
124− -- , getFromThenTo
105+ , snocLinear
125− , getIndexRev -- getRevIndex?
106+ , snocMay
126− , indexReader
107+ , snocUnsafe
129− -- *** To Streams
109+ -- *** Appending streams
110+ , writeAppendNUnsafe
115+ -- ** Eliminating and Reading
122+ -- *** To containers
131 , readRev
128 , readRev
134 , toStreamK
129 , toStreamK
136 , toStreamKRev
130 , toStreamKRev
139− -- *** To Containers
143 -- experimental
133 -- experimental
144 , producerWith
134 , producerWith
145 , producer
135 , producer
147− , reader
137+ -- *** Random reads
148− , readerRevWith
138+ , getIndex
149− , readerRev
139+ , getIndexUnsafe
151− -- ** Size and Capacity
141+ , getIndicesD
152− -- *** Size
142+ -- , getFromThenTo
153− , length
143+ , getIndexRev
161− -- *** Capacity Management
145+ -- ** Memory Management
162 , blockSize
146 , blockSize
163 , arrayChunkBytes
147 , arrayChunkBytes
164 , allocBytesToElemCount
148 , allocBytesToElemCount
165− , realloc -- this is "resize"
149+ , realloc
167− , growExp
151+ , resizeExp
168 , rightSize
152 , rightSize
170− -- ** Folding
154+ -- ** Size
171− , foldl'
155+ , length
172− , foldr
156+ , byteLength
173− , byteCmp
157+ -- , capacity
174− , byteEq
158+ , byteCapacity
176 -- ** In-place Mutation Algorithms
161 -- ** In-place Mutation Algorithms
@@ -183,121 +168,62 @@ module Streamly.Internal.Data.MutArray.Type
183 , mergeBy
168 , mergeBy
186− -- ** Growing and Shrinking
171+ -- ** Casting
187− -- | Arrays grow only at the end, though it is possible to grow on both
172+ , cast
188− -- sides and therefore have a cons as well as snoc. But that will require
173+ , castUnsafe
189− -- both lower and upper bound in the array representation.
174+ , asBytes
191− -- *** Appending elements
196− , snocUnsafe -- XXX unsafeSnoc
198− -- *** Appending streams
204− -- *** Appending arrays
209− , spliceUnsafe -- XXX unsafeSplice
212− -- , appendSliceFrom
214− -- ** Serialization using Unbox
217− , pokeSkipUnsafe -- unsafePokeSkip
219− -- ** Deserialization using Unbox
177+ -- ** Folding
220− , peekUncons
178+ , foldl'
221− , peekUnconsUnsafe -- unsafePeekUncons
179+ , foldr
222− , peekSkipUnsafe -- unsafePeekSkip
180+ , cmp
224− -- Arrays of arrays
182+ -- ** Arrays of arrays
225 -- We can add dimensionality parameter to the array type to get
183 -- We can add dimensionality parameter to the array type to get
226 -- multidimensional arrays. Multidimensional arrays would just be a
184 -- multidimensional arrays. Multidimensional arrays would just be a
227 -- convenience wrapper on top of single dimensional arrays.
185 -- convenience wrapper on top of single dimensional arrays.
229− -- ** Streams of Arrays
187+ -- | Operations dealing with multiple arrays, streams of arrays or
230− -- *** Chunk
188+ -- multidimensional array representations.
231− -- | Group a stream into arrays.
189+
190+ -- *** Construct from streams
232 , chunksOf
191 , chunksOf
233 , pinnedChunksOf
192 , pinnedChunksOf
234− , buildChunks
193+ , writeChunks
236− -- *** Split
195+ -- *** Eliminate to streams
237− -- | Split an array into slices.
196+ , flattenArrays
200+ -- *** Construct from arrays
201+ -- get chunks without copying
239 -- , getSlicesFromLenN
204 -- , getSlicesFromLenN
240− , splitOn
205+ , splitAt -- XXX should be able to express using getSlice
241− -- , slicesOf
206+ , breakOn
243− -- *** Concat
208+ -- ** Cloning arrays
244− -- | Append the arrays in a stream to form a stream of elements.
209+ , clone
245− , concatWith
210+ , pinnedClone
247− , concat
212+ -- ** Appending arrays
248− , concatRev
213+ , spliceCopy
250− -- *** Compact
215+ , splice
251− -- | Append the arrays in a stream to form a stream of larger arrays.
216+ , spliceExp
252− , SpliceState (..)
217+ , spliceUnsafe
253− , pCompactLE
218+ -- , putSlice
254− , pPinnedCompactLE
219+ -- , appendSlice
255− , compactLeAs
220+ -- , appendSliceFrom
263 -- ** Utilities
222 -- ** Utilities
264 , roundUpToPower2
223 , roundUpToPower2
267 , c_memchr
226 , c_memchr
286− , writeAppendNUnsafe
293− , pinnedWriteNUnsafe
296− , pinnedWriteNAligned -- XXX not required
@@ -308,7 +234,6 @@ where
309import Control.Monad (when, void)
235import Control.Monad (when, void)
310import Control.Monad.IO.Class (MonadIO(..))
236import Control.Monad.IO.Class (MonadIO(..))
311−import Data.Bifunctor (first)
312import Data.Bits (shiftR, (.|.), (.&.))
237import Data.Bits (shiftR, (.|.), (.&.))
313import Data.Functor.Identity (Identity(..))
238import Data.Functor.Identity (Identity(..))
314import Data.Proxy (Proxy(..))
239import Data.Proxy (Proxy(..))
@@ -317,6 +242,7 @@ import Foreign.C.Types (CSize(..), CInt(..))
317import Foreign.Ptr (plusPtr, minusPtr, nullPtr)
242import Foreign.Ptr (plusPtr, minusPtr, nullPtr)
318import Streamly.Internal.Data.MutByteArray.Type
243import Streamly.Internal.Data.MutByteArray.Type
319 ( MutByteArray(..)
244 ( MutByteArray(..)
320 , PinnedState(..)
246 , PinnedState(..)
321 , getMutableByteArray#
247 , getMutableByteArray#
322 , putSliceUnsafe
248 , putSliceUnsafe
@@ -329,23 +255,19 @@ import GHC.Base
329 , copyMutableByteArray#
255 , copyMutableByteArray#
331import GHC.Base (noinline)
257import GHC.Base (noinline)
332−import GHC.Exts (unsafeCoerce#, Addr#)
258+import GHC.Exts (unsafeCoerce#)
333import GHC.Ptr (Ptr(..))
259import GHC.Ptr (Ptr(..))
335import Streamly.Internal.Data.Fold.Type (Fold(..))
261import Streamly.Internal.Data.Fold.Type (Fold(..))
336import Streamly.Internal.Data.Producer.Type (Producer (..))
262import Streamly.Internal.Data.Producer.Type (Producer (..))
337import Streamly.Internal.Data.Stream.Type (Stream)
263import Streamly.Internal.Data.Stream.Type (Stream)
338−import Streamly.Internal.Data.Parser.Type (Parser (..))
339import Streamly.Internal.Data.StreamK.Type (StreamK)
264import Streamly.Internal.Data.StreamK.Type (StreamK)
340import Streamly.Internal.Data.SVar.Type (adaptState, defState)
265import Streamly.Internal.Data.SVar.Type (adaptState, defState)
341−import Streamly.Internal.Data.Tuple.Strict (Tuple'(..))
342import Streamly.Internal.Data.Unfold.Type (Unfold(..))
266import Streamly.Internal.Data.Unfold.Type (Unfold(..))
343import Streamly.Internal.System.IO (arrayPayloadSize, defaultChunkSize)
267import Streamly.Internal.System.IO (arrayPayloadSize, defaultChunkSize)
345import qualified Streamly.Internal.Data.Fold.Type as FL
269import qualified Streamly.Internal.Data.Fold.Type as FL
346import qualified Streamly.Internal.Data.MutByteArray.Type as Unboxed
270import qualified Streamly.Internal.Data.MutByteArray.Type as Unboxed
347−import qualified Streamly.Internal.Data.Parser.Type as Parser
348−-- import qualified Streamly.Internal.Data.Fold.Type as Fold
349import qualified Streamly.Internal.Data.Producer as Producer
271import qualified Streamly.Internal.Data.Producer as Producer
350import qualified Streamly.Internal.Data.Stream.Type as D
272import qualified Streamly.Internal.Data.Stream.Type as D
351import qualified Streamly.Internal.Data.Stream.Lift as D
273import qualified Streamly.Internal.Data.Stream.Lift as D
@@ -353,7 +275,7 @@ import qualified Streamly.Internal.Data.StreamK.Type as K
353import qualified Prelude
275import qualified Prelude
355import Prelude hiding
277import Prelude hiding
356− (Foldable(..), concat, read, unlines, splitAt, reverse, truncate)
278+ (Foldable(..), read, unlines, splitAt, reverse, truncate)
358#include "DocTestDataMutArray.hs"
280#include "DocTestDataMutArray.hs"
@@ -361,7 +283,6 @@ import Prelude hiding
361-- Foreign helpers
283-- Foreign helpers
362-------------------------------------------------------------------------------
284-------------------------------------------------------------------------------
364−-- NOTE: Have to be "ccall unsafe" so that we can pass unpinned memory to these
365foreign import ccall unsafe "string.h memcpy" c_memcpy
286foreign import ccall unsafe "string.h memcpy" c_memcpy
366 :: Ptr Word8 -> Ptr Word8 -> CSize -> IO (Ptr Word8)
287 :: Ptr Word8 -> Ptr Word8 -> CSize -> IO (Ptr Word8)
@@ -371,9 +292,6 @@ foreign import ccall unsafe "string.h memchr" c_memchr
371foreign import ccall unsafe "string.h memcmp" c_memcmp
292foreign import ccall unsafe "string.h memcmp" c_memcmp
372 :: Ptr Word8 -> Ptr Word8 -> CSize -> IO CInt
293 :: Ptr Word8 -> Ptr Word8 -> CSize -> IO CInt
374−foreign import ccall unsafe "string.h strlen" c_strlen
375− :: Ptr Word8 -> IO CSize
377-- | Given an 'Unboxed' type (unused first arg) and a number of bytes, return
295-- | Given an 'Unboxed' type (unused first arg) and a number of bytes, return
378-- how many elements of that type will completely fit in those bytes.
296-- how many elements of that type will completely fit in those bytes.
@@ -479,8 +397,6 @@ isPinned MutArray{..} = Unboxed.isPinned arrContents
479-- we need more than that. See stg_pinnedNewAlignedByteArrayzh and
397-- we need more than that. See stg_pinnedNewAlignedByteArrayzh and
480-- allocatePinned in GHC source.
398-- allocatePinned in GHC source.
482−-- XXX Rename to emptyAlignedWith, alignSize should be first arg.
484-- | @newArrayWith allocator alignment count@ allocates a new array of zero
400-- | @newArrayWith allocator alignment count@ allocates a new array of zero
485-- length and with a capacity to hold @count@ elements, using @allocator
401-- length and with a capacity to hold @count@ elements, using @allocator
486-- size alignment@ as the memory allocator function.
402-- size alignment@ as the memory allocator function.
@@ -504,25 +420,12 @@ newArrayWith alloc alignSize count = do
504 , arrBound = size
420 , arrBound = size
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.
511−-- | Create an empty array.
517−empty = MutArray Unboxed.empty 0 0 0
519−{-# DEPRECATED nil "Please use empty instead." #-}
521#ifdef DEVBUILD
424#ifdef DEVBUILD
522 Unbox a =>
425 Unbox a =>
524 MutArray a
427 MutArray a
525−nil = empty
428+nil = MutArray Unboxed.nil 0 0 0
527{-# INLINE newBytesAs #-}
430{-# INLINE newBytesAs #-}
528newBytesAs :: MonadIO m =>
431newBytesAs :: MonadIO m =>
@@ -539,13 +442,12 @@ newBytesAs ps bytes = do
539 , arrBound = bytes
442 , arrBound = bytes
542−-- | Allocates a pinned empty array that with a reserved capacity of bytes.
445+-- | Allocates a pinned empty array that can hold 'count' items. The memory of
543−-- The memory of the array is uninitialized and the allocation is aligned as
446+-- the array is uninitialized and the allocation is aligned as per the
544−-- per the 'Unboxed' instance of the type.
447+-- 'Unboxed' instance of the type.
546-- /Pre-release/
449-- /Pre-release/
547{-# INLINE pinnedNewBytes #-}
450{-# INLINE pinnedNewBytes #-}
548−{-# DEPRECATED pinnedNewBytes "Please use pinnedEmptyOf with appropriate calculation" #-}
549pinnedNewBytes :: MonadIO m =>
451pinnedNewBytes :: MonadIO m =>
550#ifdef DEVBUILD
452#ifdef DEVBUILD
551 Unbox a =>
453 Unbox a =>
@@ -570,31 +472,21 @@ newAs ps =
570 (error "new: alignment is not used in unpinned arrays.")
472 (error "new: alignment is not used in unpinned arrays.")
572-- XXX can unaligned allocation be more efficient when alignment is not needed?
474-- XXX can unaligned allocation be more efficient when alignment is not needed?
574−-- | Allocates a pinned array of zero length but growable to the specified
476+-- | Allocates an empty pinned array that can hold 'count' items. The memory of
575−-- capacity without reallocation.
477+-- the array is uninitialized and the allocation is aligned as per the 'Unboxed'
576−{-# INLINE pinnedEmptyOf #-}
478+-- instance of the type.
577−pinnedEmptyOf :: forall m a. (MonadIO m, Unbox a) => Int -> m (MutArray a)
479+--
578−pinnedEmptyOf = newAs Pinned
580−-- XXX Deprecate in major
581−-- {-# DEPRECATED pinnedNew "Please use pinnedEmptyOf instead." #-}
582{-# INLINE pinnedNew #-}
480{-# INLINE pinnedNew #-}
583pinnedNew :: forall m a. (MonadIO m, Unbox a) => Int -> m (MutArray a)
481pinnedNew :: forall m a. (MonadIO m, Unbox a) => Int -> m (MutArray a)
584−pinnedNew = pinnedEmptyOf
482+pinnedNew = newAs Pinned
586−-- | Allocates an unpinned array of zero length but growable to the specified
484+-- | Allocates an empty unpinned array that can hold 'count' items. The memory
587−-- capacity without reallocation.
485+-- of the array is uninitialized.
589−{-# INLINE emptyOf #-}
590−emptyOf :: (MonadIO m, Unbox a) => Int -> m (MutArray a)
591−emptyOf = newAs Unpinned
593−-- XXX Deprecate in major
594−-- {-# DEPRECATED new "Please use emptyOf instead." #-}
595{-# INLINE new #-}
487{-# INLINE new #-}
596new :: (MonadIO m, Unbox a) => Int -> m (MutArray a)
488new :: (MonadIO m, Unbox a) => Int -> m (MutArray a)
597−new = emptyOf
489+new = newAs Unpinned
599-------------------------------------------------------------------------------
491-------------------------------------------------------------------------------
600-- Random writes
492-- Random writes
@@ -642,7 +534,7 @@ putIndices arr = FL.foldlM' step (return ())
645− step () (i, x) = putIndex i arr x
537+ step () (i, x) = liftIO (putIndex i arr x)
647-- | Modify a given index of an array using a modifier function.
539-- | Modify a given index of an array using a modifier function.
@@ -838,19 +730,22 @@ arrayChunkBytes = 1024
838roundDownTo :: Int -> Int -> Int
730roundDownTo :: Int -> Int -> Int
839roundDownTo elemSize size = size - (size `mod` elemSize)
731roundDownTo elemSize size = size - (size `mod` elemSize)
733+-- XXX See if resizing can be implemented by reading the old array as a stream
734+-- and then using writeN to the new array.
841-- NOTE: we are passing elemSize explicitly to avoid an Unboxed constraint.
736-- NOTE: we are passing elemSize explicitly to avoid an Unboxed constraint.
842-- Since this is not inlined Unboxed consrraint leads to dictionary passing
737-- Since this is not inlined Unboxed consrraint leads to dictionary passing
843-- which complicates some inspection tests.
738-- which complicates some inspection tests.
845−{-# NOINLINE reallocExplicitAs #-}
740+{-# NOINLINE reallocExplicit #-}
846−reallocExplicitAs :: PinnedState -> Int -> Int -> MutArray a -> IO (MutArray a)
741+reallocExplicit :: Int -> Int -> MutArray a -> IO (MutArray a)
847−reallocExplicitAs ps elemSize newCapacityInBytes MutArray{..} = do
742+reallocExplicit elemSize newCapacityInBytes MutArray{..} = do
848 assertM(arrEnd <= arrBound)
743 assertM(arrEnd <= arrBound)
850 -- Allocate new array
745 -- Allocate new array
851 let newCapMaxInBytes = roundUpLargeArray newCapacityInBytes
746 let newCapMaxInBytes = roundUpLargeArray newCapacityInBytes
852 contents <-
747 contents <-
853− if ps == Pinned
748+ if Unboxed.isPinned arrContents
854 then Unboxed.pinnedNew newCapMaxInBytes
749 then Unboxed.pinnedNew newCapMaxInBytes
855 else Unboxed.new newCapMaxInBytes
750 else Unboxed.new newCapMaxInBytes
856 let !(MutByteArray mbarrFrom#) = arrContents
751 let !(MutByteArray mbarrFrom#) = arrContents
@@ -875,10 +770,6 @@ reallocExplicitAs ps elemSize newCapacityInBytes MutArray{..} = do
875 , arrBound = newCapInBytes
770 , arrBound = newCapInBytes
878−-- XXX Should these be called reallocBytes etc?
879−-- XXX We may also need reallocAs to allocate as pinned/unpinned explicitly. In
880−-- fact clone/pinnedClone can be implemented using reallocAs.
882-- | @realloc newCapacity array@ reallocates the array to the specified
773-- | @realloc newCapacity array@ reallocates the array to the specified
883-- capacity in bytes.
774-- capacity in bytes.
@@ -890,12 +781,7 @@ reallocExplicitAs ps elemSize newCapacityInBytes MutArray{..} = do
890-- If the original array is pinned, the newly allocated array is also pinned.
781-- If the original array is pinned, the newly allocated array is also pinned.
891{-# INLINABLE realloc #-}
782{-# INLINABLE realloc #-}
892realloc :: forall m a. (MonadIO m, Unbox a) => Int -> MutArray a -> m (MutArray a)
783realloc :: forall m a. (MonadIO m, Unbox a) => Int -> MutArray a -> m (MutArray a)
898− in liftIO $ reallocExplicitAs ps (SIZE_OF(a)) bytes arr
784+realloc bytes arr = liftIO $ reallocExplicit (SIZE_OF(a)) bytes arr
900-- | @reallocWith label capSizer minIncrBytes array@. The label is used
786-- | @reallocWith label capSizer minIncrBytes array@. The label is used
901-- in error messages and the capSizer is used to determine the capacity of the
787-- in error messages and the capSizer is used to determine the capacity of the
@@ -918,14 +804,14 @@ reallocWith label capSizer minIncrBytes arr = do
920 badSize newSize =
806 badSize newSize =
921− Prelude.concat
807+ concat
923 , ": new array size (in bytes) is less than required size "
809 , ": new array size (in bytes) is less than required size "
924 , show newSize
810 , show newSize
925 , ". Please check the sizing function passed."
811 , ". Please check the sizing function passed."
928−-- | @grow newCapacity array@ changes the total capacity of the array so that
814+-- | @resize newCapacity array@ changes the total capacity of the array so that
929-- it is enough to hold the specified number of elements. Nothing is done if
815-- it is enough to hold the specified number of elements. Nothing is done if
930-- the specified capacity is less than the length of the array.
816-- the specified capacity is less than the length of the array.
@@ -933,46 +819,34 @@ reallocWith label capSizer minIncrBytes arr = do
933-- the block size (4K).
819-- the block size (4K).
935-- /Pre-release/
821-- /Pre-release/
936−{-# INLINE grow #-}
822+{-# INLINE resize #-}
937−grow :: forall m a. (MonadIO m, Unbox a) =>
823+resize :: forall m a. (MonadIO m, Unbox a) =>
938 Int -> MutArray a -> m (MutArray a)
824 Int -> MutArray a -> m (MutArray a)
939−grow nElems arr@MutArray{..} = do
825+resize nElems arr@MutArray{..} = do
940 let req = SIZE_OF(a) * nElems
826 let req = SIZE_OF(a) * nElems
941− cap = arrBound - arrStart
827+ len = arrEnd - arrStart
942− if req < cap
828+ if req < len
943 then return arr
829 then return arr
944 else realloc req arr
830 else realloc req arr
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)
952−-- | Like 'grow' but if the requested byte capacity is more than
832+-- | Like 'resize' but if the byte capacity is more than 'largeObjectThreshold'
953−-- 'largeObjectThreshold' then it is rounded up to the closest power of 2.
833+-- then it is rounded up to the closest power of 2.
955-- /Pre-release/
835-- /Pre-release/
956−{-# INLINE growExp #-}
836+{-# INLINE resizeExp #-}
957−growExp :: forall m a. (MonadIO m, Unbox a) =>
837+resizeExp :: forall m a. (MonadIO m, Unbox a) =>
958 Int -> MutArray a -> m (MutArray a)
838 Int -> MutArray a -> m (MutArray a)
959−growExp nElems arr@MutArray{..} = do
839+resizeExp nElems arr@MutArray{..} = do
960 let req = roundUpLargeArray (SIZE_OF(a) * nElems)
840 let req = roundUpLargeArray (SIZE_OF(a) * nElems)
962 if req > largeObjectThreshold
842 if req > largeObjectThreshold
963 then roundUpToPower2 req
843 then roundUpToPower2 req
965− cap = arrBound - arrStart
845+ len = arrEnd - arrStart
966− if req1 < cap
846+ if req1 < len
967 then return arr
847 then return arr
968 else realloc req1 arr
848 else realloc req1 arr
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)
976-- | Resize the allocated memory to drop any reserved free space at the end of
850-- | Resize the allocated memory to drop any reserved free space at the end of
977-- the array and reallocate it to reduce wastage.
851-- the array and reallocate it to reduce wastage.
@@ -1037,7 +911,7 @@ snocUnsafe arr@MutArray{..} = snocNewEnd (INDEX_NEXT(arrEnd,a)) arr
1037{-# INLINE snocMay #-}
911{-# INLINE snocMay #-}
1038snocMay :: forall m a. (MonadIO m, Unbox a) =>
912snocMay :: forall m a. (MonadIO m, Unbox a) =>
1039 MutArray a -> a -> m (Maybe (MutArray a))
913 MutArray a -> a -> m (Maybe (MutArray a))
1040−snocMay arr@MutArray{..} x = do
914+snocMay arr@MutArray{..} x = liftIO $ do
1041 let newEnd = INDEX_NEXT(arrEnd,a)
915 let newEnd = INDEX_NEXT(arrEnd,a)
1042 if newEnd <= arrBound
916 if newEnd <= arrBound
1043 then Just <$> snocNewEnd newEnd arr x
917 then Just <$> snocNewEnd newEnd arr x
@@ -1051,7 +925,7 @@ snocWithRealloc :: forall m a. (MonadIO m, Unbox a) =>
1052 -> m (MutArray a)
926 -> m (MutArray a)
1053snocWithRealloc sizer arr x = do
927snocWithRealloc sizer arr x = do
1054− arr1 <- reallocWith "snocWith" sizer (SIZE_OF(a)) arr
928+ arr1 <- liftIO $ reallocWith "snocWith" sizer (SIZE_OF(a)) arr
1055 snocUnsafe arr1 x
929 snocUnsafe arr1 x
1057-- | @snocWith sizer arr elem@ mutates @arr@ to append @elem@. The length of
931-- | @snocWith sizer arr elem@ mutates @arr@ to append @elem@. The length of
@@ -1073,7 +947,7 @@ snocWith :: forall m a. (MonadIO m, Unbox a) =>
1073 -> MutArray a
947 -> MutArray a
1075 -> m (MutArray a)
949 -> m (MutArray a)
1076−snocWith allocSize arr x = do
950+snocWith allocSize arr x = liftIO $ do
1077 let newEnd = INDEX_NEXT(arrEnd arr,a)
951 let newEnd = INDEX_NEXT(arrEnd arr,a)
1078 if newEnd <= arrBound arr
952 if newEnd <= arrBound arr
1079 then snocNewEnd newEnd arr x
953 then snocNewEnd newEnd arr x
@@ -1117,126 +991,6 @@ snoc = snocWith f
1117 then oldSize * 2
991 then oldSize * 2
1118 else roundUpToPower2 oldSize * 2
992 else roundUpToPower2 oldSize * 2
1120−-------------------------------------------------------------------------------
1121−-- Serialization/Deserialization
1122−-------------------------------------------------------------------------------
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}
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
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
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})
1151−-- | Like 'pokeAppend' but does not grow the array when pre-allocated array
1152−-- capacity becomes full.
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
1164−{-# NOINLINE pokeWithRealloc #-}
1165−pokeWithRealloc :: forall m a. (MonadIO m, Unbox 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
1174−{-# INLINE pokeAppendWith #-}
1175−pokeAppendWith :: forall m a. (MonadIO m, Unbox 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
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.
1191−-- >>> pokeAppend arr x = MutArray.castUnsafe <$> MutArray.snoc (MutArray.castUnsafe arr) x
1193−{-# INLINE pokeAppend #-}
1194−pokeAppend :: forall m a. (MonadIO m, Unbox a) =>
1195− MutArray Word8 -> a -> m (MutArray Word8)
1196−pokeAppend = pokeAppendWith f
1201− if isPower2 oldSize
1203− else roundUpToPower2 oldSize * 2
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.
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 ())
1217− r <- peekAt arrStart arrContents
1218− return (r, MutArray arrContents start1 arrEnd arrBound)
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)
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)
1235− then return (Nothing, arr)
1237− r <- peekAt arrStart arrContents
1238− return (Just r, MutArray arrContents start1 arrEnd arrBound)
1240-------------------------------------------------------------------------------
994-------------------------------------------------------------------------------
1241-- Random reads
995-- Random reads
1242-------------------------------------------------------------------------------
996-------------------------------------------------------------------------------
@@ -1279,10 +1033,15 @@ getIndexRev i MutArray{..} = do
1279data GetIndicesState contents start end st =
1033data GetIndicesState contents start end st =
1280 GetIndicesState contents start end st
1034 GetIndicesState contents start end st
1282−{-# INLINE indexReaderWith #-}
1036+-- | Given an unfold that generates array indices, read the elements on those
1037+-- indices from the supplied MutArray. An error is thrown if an index is out of
1041+{-# INLINE getIndicesD #-}
1283−indexReaderWith :: (Monad m, Unbox a) =>
1042+getIndicesD :: (Monad m, Unbox a) =>
1284 (forall b. IO b -> m b) -> D.Stream m Int -> Unfold m (MutArray a) a
1043 (forall b. IO b -> m b) -> D.Stream m Int -> Unfold m (MutArray a) a
1285−indexReaderWith liftio (D.Stream stepi sti) = Unfold step inject
1044+getIndicesD liftio (D.Stream stepi sti) = Unfold step inject
@@ -1301,26 +1060,9 @@ indexReaderWith liftio (D.Stream stepi sti) = Unfold step inject
1301 D.Skip s -> return $ D.Skip (GetIndicesState contents start end s)
1060 D.Skip s -> return $ D.Skip (GetIndicesState contents start end s)
1302 D.Stop -> return D.Stop
1061 D.Stop -> return D.Stop
1304−{-# DEPRECATED getIndicesWith "Please use indexReaderWith instead." #-}
1305−{-# INLINE getIndicesWith #-}
1306−getIndicesWith :: (Monad m, Unbox a) =>
1307− (forall b. IO b -> m b) -> D.Stream m Int -> Unfold m (MutArray a) a
1308−getIndicesWith = indexReaderWith
1310−-- | Given an unfold that generates array indices, read the elements on those
1311−-- indices from the supplied MutArray. An error is thrown if an index is out of
1315−{-# INLINE indexReader #-}
1316−indexReader :: (MonadIO m, Unbox a) => Stream m Int -> Unfold m (MutArray a) a
1317−indexReader = indexReaderWith liftIO
1319−-- XXX DO NOT REMOVE, change the signature to use Stream instead of unfold
1320−{-# DEPRECATED getIndices "Please use indexReader instead." #-}
1321{-# INLINE getIndices #-}
1063{-# INLINE getIndices #-}
1322getIndices :: (MonadIO m, Unbox a) => Stream m Int -> Unfold m (MutArray a) a
1064getIndices :: (MonadIO m, Unbox a) => Stream m Int -> Unfold m (MutArray a) a
1323−getIndices = indexReader
1065+getIndices = getIndicesD liftIO
1325-------------------------------------------------------------------------------
1067-------------------------------------------------------------------------------
1326-- Subarrays
1068-- Subarrays
@@ -1615,7 +1357,7 @@ chunksOfAs ps n (D.Stream step state) =
1616-- Same as the following but may be more efficient:
1358-- Same as the following but may be more efficient:
1618−-- >>> chunksOf n = Stream.foldMany (MutArray.createOf n)
1360+-- >>> chunksOf n = Stream.foldMany (MutArray.writeN n)
1620-- /Pre-release/
1362-- /Pre-release/
1621{-# INLINE_NORMAL chunksOf #-}
1363{-# INLINE_NORMAL chunksOf #-}
@@ -1624,29 +1366,17 @@ chunksOf :: forall m a. (MonadIO m, Unbox a)
1624-- XXX the idiomatic implementation leads to large regression in the D.reverse'
1366-- XXX the idiomatic implementation leads to large regression in the D.reverse'
1625-- benchmark. It seems it has difficulty producing optimized code when
1367-- benchmark. It seems it has difficulty producing optimized code when
1626-- converting to StreamK. Investigate GHC optimizations.
1368-- converting to StreamK. Investigate GHC optimizations.
1627−-- chunksOf n = D.foldMany (createOf n)
1369+-- chunksOf n = D.foldMany (writeN n)
1628chunksOf = chunksOfAs Unpinned
1370chunksOf = chunksOfAs Unpinned
1630-- | Like 'chunksOf' but creates pinned arrays.
1372-- | Like 'chunksOf' but creates pinned arrays.
1631{-# INLINE_NORMAL pinnedChunksOf #-}
1373{-# INLINE_NORMAL pinnedChunksOf #-}
1632pinnedChunksOf :: forall m a. (MonadIO m, Unbox a)
1374pinnedChunksOf :: forall m a. (MonadIO m, Unbox a)
1633 => Int -> D.Stream m a -> D.Stream m (MutArray a)
1375 => Int -> D.Stream m a -> D.Stream m (MutArray a)
1634−-- pinnedChunksOf n = D.foldMany (pinnedCreateOf n)
1376+-- pinnedChunksOf n = D.foldMany (pinnedWriteN n)
1635pinnedChunksOf = chunksOfAs Pinned
1377pinnedChunksOf = chunksOfAs Pinned
1637−-- | When we are buffering a stream of unknown size into an array we do not
1379+-- XXX This should take a PinnedState
1638−-- know how much space to pre-allocate. So we start with the min size and emit
1639−-- the array then keep on doubling the size every time. Thus we do not need to
1640−-- guess the optimum chunk size.
1642−-- We can incorporate this in chunksOfAs if the additional size parameter does
1645−{-# INLINE _chunksOfRange #-}
1646−_chunksOfRange :: -- (MonadIO m, Unbox a) =>
1647− PinnedState -> Int -> Int -> D.Stream m a -> D.Stream m (MutArray a)
1648−_chunksOfRange _ps _low _hi = undefined
1650-- XXX buffer to a list instead?
1380-- XXX buffer to a list instead?
1651-- | Buffer the stream into arrays in memory.
1381-- | Buffer the stream into arrays in memory.
1652{-# INLINE arrayStreamKFromStreamDAs #-}
1382{-# INLINE arrayStreamKFromStreamDAs #-}
@@ -1664,10 +1394,16 @@ data FlattenState s contents a =
1664 OuterLoop s
1394 OuterLoop s
1665 | InnerLoop s contents !Int !Int
1395 | InnerLoop s contents !Int !Int
1397+-- | Use the "reader" unfold instead.
1399+-- @flattenArrays = unfoldMany reader@
1401+-- We can try this if there are any fusion issues in the unfold.
1667−{-# INLINE_NORMAL concatWith #-}
1403+{-# INLINE_NORMAL flattenArrays #-}
1668−concatWith :: forall m a. (Monad m, Unbox a)
1404+flattenArrays :: forall m a. (MonadIO m, Unbox a)
1669− => (forall b. IO b -> m b) -> D.Stream m (MutArray a) -> D.Stream m a
1405+ => D.Stream m (MutArray a) -> D.Stream m a
1670−concatWith liftio (D.Stream step state) = D.Stream step' (OuterLoop state)
1406+flattenArrays (D.Stream step state) = D.Stream step' (OuterLoop state)
@@ -1684,30 +1420,19 @@ concatWith liftio (D.Stream step state) = D.Stream step' (OuterLoop state)
1684 return $ D.Skip $ OuterLoop st
1420 return $ D.Skip $ OuterLoop st
1686 step' _ (InnerLoop st contents p end) = do
1422 step' _ (InnerLoop st contents p end) = do
1687− x <- liftio $ peekAt p contents
1423+ x <- liftIO $ peekAt p contents
1688 return $ D.Yield x (InnerLoop st contents (INDEX_NEXT(p,a)) end)
1424 return $ D.Yield x (InnerLoop st contents (INDEX_NEXT(p,a)) end)
1690−-- | Use the "reader" unfold instead.
1426+-- | Use the "readerRev" unfold instead.
1692−-- @concat = unfoldMany reader@
1428+-- @flattenArrays = unfoldMany readerRev@
1694-- We can try this if there are any fusion issues in the unfold.
1430-- We can try this if there are any fusion issues in the unfold.
1696−{-# INLINE_NORMAL concat #-}
1432+{-# INLINE_NORMAL flattenArraysRev #-}
1697−concat :: forall m a. (MonadIO m, Unbox a)
1698− => D.Stream m (MutArray a) -> D.Stream m a
1699−concat = concatWith liftIO
1701−{-# DEPRECATED flattenArrays "Please use \"unfoldMany reader\" instead." #-}
1702−{-# INLINE flattenArrays #-}
1703−flattenArrays :: forall m a. (MonadIO m, Unbox a)
1433+flattenArraysRev :: forall m a. (MonadIO m, Unbox a)
1704 => D.Stream m (MutArray a) -> D.Stream m a
1434 => D.Stream m (MutArray a) -> D.Stream m a
1705−flattenArrays = concat
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)
1435+flattenArraysRev (D.Stream step state) = D.Stream step' (OuterLoop state)
@@ -1725,27 +1450,10 @@ concatRevWith liftio (D.Stream step state) = D.Stream step' (OuterLoop state)
1725 return $ D.Skip $ OuterLoop st
1450 return $ D.Skip $ OuterLoop st
1727 step' _ (InnerLoop st contents p start) = do
1452 step' _ (InnerLoop st contents p start) = do
1728− x <- liftio $ peekAt p contents
1453+ x <- liftIO $ peekAt p contents
1729 let cur = INDEX_PREV(p,a)
1454 let cur = INDEX_PREV(p,a)
1730 return $ D.Yield x (InnerLoop st contents cur start)
1455 return $ D.Yield x (InnerLoop st contents cur start)
1732−-- | Use the "readerRev" unfold instead.
1734−-- @concat = unfoldMany readerRev@
1736−-- We can try this if there are any fusion issues in the unfold.
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
1743−{-# DEPRECATED flattenArraysRev "Please use \"unfoldMany readerRev\" instead." #-}
1744−{-# INLINE flattenArraysRev #-}
1745−flattenArraysRev :: forall m a. (MonadIO m, Unbox a)
1746− => D.Stream m (MutArray a) -> D.Stream m a
1747−flattenArraysRev = concatRev
1749-------------------------------------------------------------------------------
1457-------------------------------------------------------------------------------
1750-- Unfolds
1458-- Unfolds
1751-------------------------------------------------------------------------------
1459-------------------------------------------------------------------------------
@@ -1863,11 +1571,11 @@ toList MutArray{..} = liftIO $ go arrStart
1863 x <- peekAt p arrContents
1571 x <- peekAt p arrContents
1864 (:) x <$> go (INDEX_NEXT(p,a))
1572 (:) x <$> go (INDEX_NEXT(p,a))
1866−{-# INLINE_NORMAL toStreamWith #-}
1574+{-# INLINE_NORMAL toStreamDWith #-}
1867−toStreamWith ::
1575+toStreamDWith ::
1868 forall m a. (Monad m, Unbox a)
1576 forall m a. (Monad m, Unbox a)
1869 => (forall b. IO b -> m b) -> MutArray a -> D.Stream m a
1577 => (forall b. IO b -> m b) -> MutArray a -> D.Stream m a
1870−toStreamWith liftio MutArray{..} = D.Stream step arrStart
1578+toStreamDWith liftio MutArray{..} = D.Stream step arrStart
@@ -1883,7 +1591,7 @@ toStreamWith liftio MutArray{..} = D.Stream step arrStart
1884{-# INLINE_NORMAL read #-}
1592{-# INLINE_NORMAL read #-}
1885read :: forall m a. (MonadIO m, Unbox a) => MutArray a -> D.Stream m a
1593read :: forall m a. (MonadIO m, Unbox a) => MutArray a -> D.Stream m a
1886−read = toStreamWith liftIO
1594+read = toStreamDWith liftIO
1888{-# INLINE toStreamKWith #-}
1596{-# INLINE toStreamKWith #-}
1889toStreamKWith ::
1597toStreamKWith ::
@@ -1902,11 +1610,11 @@ toStreamKWith liftio MutArray{..} = go arrStart
1902toStreamK :: forall m a. (MonadIO m, Unbox a) => MutArray a -> StreamK m a
1610toStreamK :: forall m a. (MonadIO m, Unbox a) => MutArray a -> StreamK m a
1903toStreamK = toStreamKWith liftIO
1611toStreamK = toStreamKWith liftIO
1905−{-# INLINE_NORMAL toStreamRevWith #-}
1613+{-# INLINE_NORMAL toStreamDRevWith #-}
1906−toStreamRevWith ::
1614+toStreamDRevWith ::
1907 forall m a. (Monad m, Unbox a)
1615 forall m a. (Monad m, Unbox a)
1908 => (forall b. IO b -> m b) -> MutArray a -> D.Stream m a
1616 => (forall b. IO b -> m b) -> MutArray a -> D.Stream m a
1909−toStreamRevWith liftio MutArray{..} =
1617+toStreamDRevWith liftio MutArray{..} =
1910 let p = INDEX_PREV(arrEnd,a)
1618 let p = INDEX_PREV(arrEnd,a)
1911 in D.Stream step p
1619 in D.Stream step p
@@ -1924,7 +1632,7 @@ toStreamRevWith liftio MutArray{..} =
1925{-# INLINE_NORMAL readRev #-}
1633{-# INLINE_NORMAL readRev #-}
1926readRev :: forall m a. (MonadIO m, Unbox a) => MutArray a -> D.Stream m a
1634readRev :: forall m a. (MonadIO m, Unbox a) => MutArray a -> D.Stream m a
1927−readRev = toStreamRevWith liftIO
1635+readRev = toStreamDRevWith liftIO
1929{-# INLINE toStreamKRevWith #-}
1637{-# INLINE toStreamKRevWith #-}
1930toStreamKRevWith ::
1638toStreamKRevWith ::
@@ -1973,7 +1681,7 @@ foldr f z arr = D.foldr f z $ read arr
1974-- XXX Keep the bound intact to not lose any free space? Perf impact?
1682-- XXX Keep the bound intact to not lose any free space? Perf impact?
1976−-- | @unsafeAppendN n arr@ appends up to @n@ input items to the supplied
1684+-- | @writeAppendNUnsafe n arr@ appends up to @n@ input items to the supplied
1977-- array.
1685-- array.
1979-- Unsafe: Do not drive the fold beyond @n@ elements, it will lead to memory
1687-- Unsafe: Do not drive the fold beyond @n@ elements, it will lead to memory
@@ -1982,12 +1690,13 @@ foldr f z arr = D.foldr f z $ read arr
1982-- Any free space left in the array after appending @n@ elements is lost.
1690-- Any free space left in the array after appending @n@ elements is lost.
1984-- /Internal/
1692-- /Internal/
1985−{-# INLINE_NORMAL unsafeAppendN #-}
1693+{-# INLINE_NORMAL writeAppendNUnsafe #-}
1986−unsafeAppendN :: forall m a. (MonadIO m, Unbox a) =>
1694+writeAppendNUnsafe :: forall m a. (MonadIO m, Unbox a) =>
1988 -> m (MutArray a)
1696 -> m (MutArray a)
1989 -> Fold m a (MutArray a)
1697 -> Fold m a (MutArray a)
1698+writeAppendNUnsafe n action =
1990−unsafeAppendN n action = fmap fromArrayUnsafe $ FL.foldlM' step initial
1699+ fmap fromArrayUnsafe $ FL.foldlM' step initial
@@ -2000,7 +1709,7 @@ unsafeAppendN n action = fmap fromArrayUnsafe $ FL.foldlM' step initial
2000 -- otherwise we lose that space.
1709 -- otherwise we lose that space.
2002 if free < needed
1711 if free < needed
2003− then noinline reallocWith "unsafeAppendN" (+ needed) needed arr
1712+ then noinline reallocWith "writeAppendNUnsafeWith" (+ needed) needed arr
2004 else return arr
1713 else return arr
2005 return $ toArrayUnsafe arr1
1714 return $ toArrayUnsafe arr1
@@ -2008,51 +1717,30 @@ unsafeAppendN n action = fmap fromArrayUnsafe $ FL.foldlM' step initial
2008 liftIO $ pokeAt end contents x
1717 liftIO $ pokeAt end contents x
2009 return $ ArrayUnsafe contents start (INDEX_NEXT(end,a))
1718 return $ ArrayUnsafe contents start (INDEX_NEXT(end,a))
2011−{-# DEPRECATED writeAppendNUnsafe "Please use unsafeAppendN instead." #-}
2012−{-# INLINE writeAppendNUnsafe #-}
2013−writeAppendNUnsafe :: forall m a. (MonadIO m, Unbox a) =>
2016− -> Fold m a (MutArray a)
2017−writeAppendNUnsafe = unsafeAppendN
2019-- | Append @n@ elements to an existing array. Any free space left in the array
1720-- | Append @n@ elements to an existing array. Any free space left in the array
2020-- after appending @n@ elements is lost.
1721-- after appending @n@ elements is lost.
2022−-- >>> appendN n initial = Fold.take n (MutArray.unsafeAppendN n initial)
1723+-- >>> writeAppendN n initial = Fold.take n (MutArray.writeAppendNUnsafe n initial)
2024−{-# INLINE_NORMAL appendN #-}
1725+{-# INLINE_NORMAL writeAppendN #-}
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)
2029−-- XXX Deprecate in major
2030−-- {-# DEPRECATED writeAppendN "Please use appendN instead." #-}
2031−{-# INLINE writeAppendN #-}
2032writeAppendN :: forall m a. (MonadIO m, Unbox a) =>
1726writeAppendN :: forall m a. (MonadIO m, Unbox a) =>
2033 Int -> m (MutArray a) -> Fold m a (MutArray a)
1727 Int -> m (MutArray a) -> Fold m a (MutArray a)
2034−writeAppendN = appendN
1728+writeAppendN n initial = FL.take n (writeAppendNUnsafe n initial)
2036−-- | @appendWith realloc action@ mutates the array generated by @action@ to
1730+-- | @writeAppendWith realloc action@ mutates the array generated by @action@ to
2037-- append the input stream. If there is no reserved space available in the
1731-- append the input stream. If there is no reserved space available in the
2038-- array it is reallocated to a size in bytes determined by @realloc oldSize@,
1732-- array it is reallocated to a size in bytes determined by @realloc oldSize@,
2039-- where @oldSize@ is the current size of the array in bytes.
1733-- where @oldSize@ is the current size of the array in bytes.
2041-- Note that the returned array may be a mutated version of original array.
1735-- Note that the returned array may be a mutated version of original array.
2043−-- >>> appendWith sizer = Fold.foldlM' (MutArray.snocWith sizer)
1737+-- >>> writeAppendWith sizer = Fold.foldlM' (MutArray.snocWith sizer)
2045-- /Pre-release/
1739-- /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)
2051−{-# DEPRECATED writeAppendWith "Please use appendWith instead." #-}
2052{-# INLINE writeAppendWith #-}
1740{-# INLINE writeAppendWith #-}
2053writeAppendWith :: forall m a. (MonadIO m, Unbox a) =>
1741writeAppendWith :: forall m a. (MonadIO m, Unbox a) =>
2054 (Int -> Int) -> m (MutArray a) -> Fold m a (MutArray a)
1742 (Int -> Int) -> m (MutArray a) -> Fold m a (MutArray a)
2055−writeAppendWith = appendWith
1743+writeAppendWith sizer = FL.foldlM' (snocWith sizer)
2057-- | @append action@ mutates the array generated by @action@ to append the
1745-- | @append action@ mutates the array generated by @action@ to append the
2058-- input stream. If there is no reserved space available in the array it is
1746-- input stream. If there is no reserved space available in the array it is
@@ -2060,33 +1748,26 @@ writeAppendWith = appendWith
2061-- Note that the returned array may be a mutated version of original array.
1749-- Note that the returned array may be a mutated version of original array.
2063−-- >>> append = MutArray.appendWith (* 2)
1751+-- >>> writeAppend = MutArray.writeAppendWith (* 2)
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)
2070−-- XXX Deprecate in major
2071−-- {-# DEPRECATED writeAppend "Please use append instead." #-}
2072{-# INLINE writeAppend #-}
1753{-# INLINE writeAppend #-}
2073writeAppend :: forall m a. (MonadIO m, Unbox a) =>
1754writeAppend :: forall m a. (MonadIO m, Unbox a) =>
2074 m (MutArray a) -> Fold m a (MutArray a)
1755 m (MutArray a) -> Fold m a (MutArray a)
2075−writeAppend = append
1756+writeAppend = writeAppendWith (* 2)
2077-- XXX We can carry bound as well in the state to make sure we do not lose the
1758-- XXX We can carry bound as well in the state to make sure we do not lose the
2078-- remaining capacity. Need to check perf impact.
1759-- remaining capacity. Need to check perf impact.
2080−-- | Like 'unsafeCreateOf' but takes a new array allocator @alloc size@
1761+-- | Like 'writeNUnsafe' but takes a new array allocator @alloc size@ function
2081−-- function as argument.
1762+-- as argument.
2083−-- >>> unsafeCreateOfWith alloc n = MutArray.unsafeAppendN (alloc n) n
1764+-- >>> writeNWithUnsafe alloc n = MutArray.writeAppendNUnsafe (alloc n) n
2085-- /Pre-release/
1766-- /Pre-release/
2086−{-# INLINE_NORMAL unsafeCreateOfWith #-}
1767+{-# INLINE_NORMAL writeNWithUnsafe #-}
2087−unsafeCreateOfWith :: forall m a. (MonadIO m, Unbox a)
1768+writeNWithUnsafe :: forall m a. (MonadIO m, Unbox a)
2088 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
1769 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
2089−unsafeCreateOfWith alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
1770+writeNWithUnsafe alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
@@ -2097,64 +1778,40 @@ unsafeCreateOfWith alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
2098 $ ArrayUnsafe contents start (INDEX_NEXT(end,a))
1779 $ ArrayUnsafe contents start (INDEX_NEXT(end,a))
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
2106{-# INLINE_NORMAL writeNUnsafeAs #-}
1781{-# INLINE_NORMAL writeNUnsafeAs #-}
2107writeNUnsafeAs :: forall m a. (MonadIO m, Unbox a)
1782writeNUnsafeAs :: forall m a. (MonadIO m, Unbox a)
2108 => PinnedState -> Int -> Fold m a (MutArray a)
1783 => PinnedState -> Int -> Fold m a (MutArray a)
2109−writeNUnsafeAs ps = unsafeCreateOfWith (newAs ps)
1784+writeNUnsafeAs ps = writeNWithUnsafe (newAs ps)
2111−-- | Like 'createOf' but does not check the array bounds when writing. The fold
1786+-- | Like 'writeN' but does not check the array bounds when writing. The fold
2112-- driver must not call the step function more than 'n' times otherwise it will
1787-- driver must not call the step function more than 'n' times otherwise it will
2113-- corrupt the memory and crash. This function exists mainly because any
1788-- corrupt the memory and crash. This function exists mainly because any
2114-- conditional in the step function blocks fusion causing 10x performance
1789-- conditional in the step function blocks fusion causing 10x performance
2115-- slowdown.
1790-- slowdown.
2117−-- >>> unsafeCreateOf = MutArray.unsafeCreateOfWith MutArray.emptyOf
1792+-- >>> writeNUnsafe = MutArray.writeNWithUnsafe MutArray.new
2119−{-# INLINE_NORMAL unsafeCreateOf #-}
2120−unsafeCreateOf :: forall m a. (MonadIO m, Unbox a)
2121− => Int -> Fold m a (MutArray a)
2122−unsafeCreateOf = writeNUnsafeAs Unpinned
2124−{-# DEPRECATED writeNUnsafe "Please use unsafeCreateOf instead." #-}
2125−{-# INLINE writeNUnsafe #-}
1794+{-# INLINE_NORMAL writeNUnsafe #-}
2126writeNUnsafe :: forall m a. (MonadIO m, Unbox a)
1795writeNUnsafe :: forall m a. (MonadIO m, Unbox a)
2127 => Int -> Fold m a (MutArray a)
1796 => Int -> Fold m a (MutArray a)
2128−writeNUnsafe = unsafeCreateOf
1797+writeNUnsafe = writeNUnsafeAs Unpinned
2130−-- | Like 'unsafeCreateOf' but creates a pinned array.
1799+-- | Like 'writeNUnsafe' 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
2136−{-# DEPRECATED pinnedWriteNUnsafe "Please use unsafePinnedCreateOf instead." #-}
2137−{-# INLINE pinnedWriteNUnsafe #-}
1800+{-# INLINE_NORMAL pinnedWriteNUnsafe #-}
2138pinnedWriteNUnsafe :: forall m a. (MonadIO m, Unbox a)
1801pinnedWriteNUnsafe :: forall m a. (MonadIO m, Unbox a)
2139 => Int -> Fold m a (MutArray a)
1802 => Int -> Fold m a (MutArray a)
2140−pinnedWriteNUnsafe = unsafePinnedCreateOf
1803+pinnedWriteNUnsafe = writeNUnsafeAs Pinned
2142−-- | @createOfWith alloc n@ folds a maximum of @n@ elements into an array
1805+-- | @writeNWith alloc n@ folds a maximum of @n@ elements into an array
2143-- allocated using the @alloc@ function.
1806-- allocated using the @alloc@ function.
2145−-- >>> createOfWith alloc n = Fold.take n (MutArray.unsafeCreateOfWith alloc n)
1808+-- >>> writeNWith alloc n = Fold.take n (MutArray.writeNWithUnsafe alloc n)
2146−-- >>> createOfWith alloc n = MutArray.appendN (alloc n) n
1809+-- >>> writeNWith alloc n = MutArray.writeAppendN (alloc n) n
2148−{-# INLINE_NORMAL createOfWith #-}
1811+{-# INLINE_NORMAL writeNWith #-}
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)
2153−-- {-# DEPRECATED writeNWith "Please use createOfWith instead." #-}
2154−{-# INLINE writeNWith #-}
2155writeNWith :: forall m a. (MonadIO m, Unbox a)
1812writeNWith :: forall m a. (MonadIO m, Unbox a)
2156 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
1813 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
2157−writeNWith = createOfWith
1814+writeNWith alloc n = FL.take n (writeNWithUnsafe alloc n)
2159{-# INLINE_NORMAL writeNAs #-}
1816{-# INLINE_NORMAL writeNAs #-}
2160writeNAs ::
1817writeNAs ::
@@ -2162,42 +1819,28 @@ writeNAs ::
2162 => PinnedState
1819 => PinnedState
2164 -> Fold m a (MutArray a)
1821 -> Fold m a (MutArray a)
2165−writeNAs ps = createOfWith (newAs ps)
1822+writeNAs ps = writeNWith (newAs ps)
2167−-- | @createOf n@ folds a maximum of @n@ elements from the input stream to an
1824+-- | @writeN n@ folds a maximum of @n@ elements from the input stream to an
2168-- 'MutArray'.
1825-- 'MutArray'.
2170−-- >>> createOf = MutArray.createOfWith MutArray.new
1827+-- >>> writeN = MutArray.writeNWith MutArray.new
2171−-- >>> createOf n = Fold.take n (MutArray.unsafeCreateOf n)
1828+-- >>> writeN n = Fold.take n (MutArray.writeNUnsafe n)
2172−-- >>> createOf n = MutArray.appendN n (MutArray.emptyOf n)
1829+-- >>> writeN n = MutArray.writeAppendN n (MutArray.new n)
2174−{-# INLINE_NORMAL createOf #-}
1831+{-# INLINE_NORMAL writeN #-}
2175−createOf :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2176−createOf = writeNAs Unpinned
2178−-- XXX Deprecate in major
2179−-- {-# DEPRECATED writeN "Please use createOf instead." #-}
2180−{-# INLINE writeN #-}
2181writeN :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
1832writeN :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2182−writeN = createOf
1833+writeN = writeNAs Unpinned
2184−-- | Like 'createOf' but creates a pinned array.
2185−{-# INLINE_NORMAL pinnedCreateOf #-}
2187− forall m a. (MonadIO m, Unbox a)
2189− -> Fold m a (MutArray a)
2190−pinnedCreateOf = writeNAs Pinned
2192−{-# DEPRECATED pinnedWriteN "Please use pinnedCreateOf instead." #-}
1835+-- | Like 'writeN' but creates a pinned array.
2193−{-# INLINE pinnedWriteN #-}
1836+{-# INLINE_NORMAL pinnedWriteN #-}
2194pinnedWriteN ::
1837pinnedWriteN ::
2195 forall m a. (MonadIO m, Unbox a)
1838 forall m a. (MonadIO m, Unbox a)
2197 -> Fold m a (MutArray a)
1840 -> Fold m a (MutArray a)
2198−pinnedWriteN = pinnedCreateOf
1841+pinnedWriteN = writeNAs Pinned
2200−-- | Like unsafeCreateOfWith but writes the array in reverse order.
1843+-- | Like writeNWithUnsafe but writes the array in reverse order.
2202-- /Internal/
1845-- /Internal/
2203{-# INLINE_NORMAL writeRevNWithUnsafe #-}
1846{-# INLINE_NORMAL writeRevNWithUnsafe #-}
@@ -2218,7 +1861,7 @@ writeRevNWithUnsafe alloc n = fromArrayUnsafe <$> FL.foldlM' step initial
2219 $ ArrayUnsafe contents ptr end
1862 $ ArrayUnsafe contents ptr end
2221−-- | Like createOfWith but writes the array in reverse order.
1864+-- | Like writeNWith but writes the array in reverse order.
2223-- /Internal/
1866-- /Internal/
2224{-# INLINE_NORMAL writeRevNWith #-}
1867{-# INLINE_NORMAL writeRevNWith #-}
@@ -2226,36 +1869,31 @@ writeRevNWith :: forall m a. (MonadIO m, Unbox a)
2226 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
1869 => (Int -> m (MutArray a)) -> Int -> Fold m a (MutArray a)
2227writeRevNWith alloc n = FL.take n (writeRevNWithUnsafe alloc n)
1870writeRevNWith alloc n = FL.take n (writeRevNWithUnsafe alloc n)
2229−-- | Like 'createOf' but writes the array in reverse order.
1872+-- | Like writeN but writes the array in reverse order.
2231-- /Pre-release/
1874-- /Pre-release/
2232−{-# INLINE_NORMAL revCreateOf #-}
1875+{-# INLINE_NORMAL writeRevN #-}
2233−revCreateOf :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2234−revCreateOf = writeRevNWith new
2236−{-# DEPRECATED writeRevN "Please use revCreateOf instead." #-}
2237−{-# INLINE writeRevN #-}
2238writeRevN :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
1876writeRevN :: forall m a. (MonadIO m, Unbox a) => Int -> Fold m a (MutArray a)
2239−writeRevN = revCreateOf
1877+writeRevN = writeRevNWith new
2241-- | @pinnedWriteNAligned align n@ folds a maximum of @n@ elements from the
1879-- | @pinnedWriteNAligned align n@ folds a maximum of @n@ elements from the
2242-- input stream to a 'MutArray' aligned to the given size.
1880-- input stream to a 'MutArray' aligned to the given size.
2244−-- >>> pinnedWriteNAligned align = MutArray.createOfWith (MutArray.pinnedNewAligned align)
1882+-- >>> pinnedWriteNAligned align = MutArray.writeNWith (MutArray.pinnedNewAligned align)
2245−-- >>> pinnedWriteNAligned align n = MutArray.appendN n (MutArray.pinnedNewAligned align n)
1883+-- >>> pinnedWriteNAligned align n = MutArray.writeAppendN n (MutArray.pinnedNewAligned align n)
2247-- /Pre-release/
1885-- /Pre-release/
2249{-# INLINE_NORMAL pinnedWriteNAligned #-}
1887{-# INLINE_NORMAL pinnedWriteNAligned #-}
2250pinnedWriteNAligned :: forall m a. (MonadIO m, Unbox a)
1888pinnedWriteNAligned :: forall m a. (MonadIO m, Unbox a)
2251 => Int -> Int -> Fold m a (MutArray a)
1889 => Int -> Int -> Fold m a (MutArray a)
2252−pinnedWriteNAligned align = createOfWith (pinnedNewAligned align)
1890+pinnedWriteNAligned align = writeNWith (pinnedNewAligned align)
2254-- XXX Buffer to a list instead?
1892-- XXX Buffer to a list instead?
2256-- | Buffer a stream into a stream of arrays.
1894-- | Buffer a stream into a stream of arrays.
2258−-- >>> buildChunks n = Fold.many (MutArray.createOf n) Fold.toStreamK
1896+-- >>> writeChunks n = Fold.many (MutArray.writeN n) Fold.toStreamK
2260-- Breaking an array into an array stream can be useful to consume a large
1898-- Breaking an array into an array stream can be useful to consume a large
2261-- array sequentially such that memory of the array is released incrementatlly.
1899-- array sequentially such that memory of the array is released incrementatlly.
@@ -2264,43 +1902,37 @@ pinnedWriteNAligned align = createOfWith (pinnedNewAligned align)
2265-- /Unimplemented/
1903-- /Unimplemented/
2267−{-# INLINE_NORMAL buildChunks #-}
1905+{-# INLINE_NORMAL writeChunks #-}
2268−buildChunks :: (MonadIO m, Unbox a) =>
2269− Int -> Fold m a (StreamK n (MutArray a))
2270−buildChunks n = FL.many (createOf n) FL.toStreamK
2272−{-# DEPRECATED writeChunks "Please use buildChunks instead." #-}
2273−{-# INLINE writeChunks #-}
2274writeChunks :: (MonadIO m, Unbox a) =>
1906writeChunks :: (MonadIO m, Unbox a) =>
2275 Int -> Fold m a (StreamK n (MutArray a))
1907 Int -> Fold m a (StreamK n (MutArray a))
2276−writeChunks = buildChunks
1908+writeChunks n = FL.many (writeN n) FL.toStreamK
2278{-# INLINE_NORMAL writeWithAs #-}
1910{-# INLINE_NORMAL writeWithAs #-}
2279writeWithAs :: forall m a. (MonadIO m, Unbox a)
1911writeWithAs :: forall m a. (MonadIO m, Unbox a)
2280 => PinnedState -> Int -> Fold m a (MutArray a)
1912 => PinnedState -> Int -> Fold m a (MutArray a)
2281−-- writeWithAs ps n = FL.rmapM rightSize $ appendWith (* 2) (newAs ps n)
1913+-- writeWithAs ps n = FL.rmapM rightSize $ writeAppendWith (* 2) (newAs ps n)
2282writeWithAs ps elemCount =
1914writeWithAs ps elemCount =
2283 FL.rmapM extract $ FL.foldlM' step initial
1915 FL.rmapM extract $ FL.foldlM' step initial
2287 initial = do
1919 initial = do
2288− when (elemCount < 0) $ error "createWith: elemCount is negative"
1920+ when (elemCount < 0) $ error "writeWith: elemCount is negative"
2289− newAs ps elemCount
1921+ liftIO $ newAs ps elemCount
2291 step arr@(MutArray _ start end bound) x
1923 step arr@(MutArray _ start end bound) x
2292 | INDEX_NEXT(end,a) > bound = do
1924 | INDEX_NEXT(end,a) > bound = do
2293 let oldSize = end - start
1925 let oldSize = end - start
2294 newSize = max (oldSize * 2) 1
1926 newSize = max (oldSize * 2) 1
2295− arr1 <- liftIO $ reallocExplicitAs ps (SIZE_OF(a)) newSize arr
1927+ arr1 <- liftIO $ reallocExplicit (SIZE_OF(a)) newSize arr
2296 snocUnsafe arr1 x
1928 snocUnsafe arr1 x
2297 step arr x = snocUnsafe arr x
1929 step arr x = snocUnsafe arr x
2299 extract = liftIO . rightSize
1931 extract = liftIO . rightSize
2301−-- XXX Compare createWith with fromStreamD which uses an array of streams
1933+-- XXX Compare writeWith with fromStreamD which uses an array of streams
2302−-- implementation. We can write this using buildChunks above if that is faster.
1934+-- implementation. We can write this using writeChunks above if that is faster.
2303−-- If createWith is faster then we should use that to implement
1935+-- If writeWith is faster then we should use that to implement
2304-- fromStreamD.
1936-- fromStreamD.
2306-- XXX The realloc based implementation needs to make one extra copy if we use
1938-- XXX The realloc based implementation needs to make one extra copy if we use
@@ -2315,56 +1947,39 @@ writeWithAs ps elemCount =
2315-- XXX check if GHC's memory allocator is efficient enough. We can try the C
1947-- XXX check if GHC's memory allocator is efficient enough. We can try the C
2316-- malloc to compare against.
1948-- malloc to compare against.
2318−-- | @createWith minCount@ folds the whole input to a single array. The array
1950+-- | @writeWith minCount@ folds the whole input to a single array. The array
2319-- starts at a size big enough to hold minCount elements, the size is doubled
1951-- starts at a size big enough to hold minCount elements, the size is doubled
2320-- every time the array needs to be grown.
1952-- every time the array needs to be grown.
2322-- /Caution! Do not use this on infinite streams./
1954-- /Caution! Do not use this on infinite streams./
2324−-- >>> f n = MutArray.appendWith (* 2) (MutArray.emptyOf n)
1956+-- >>> f n = MutArray.writeAppendWith (* 2) (MutArray.new n)
2325−-- >>> createWith n = Fold.rmapM MutArray.rightSize (f n)
1957+-- >>> writeWith n = Fold.rmapM MutArray.rightSize (f n)
2326−-- >>> createWith n = Fold.rmapM MutArray.fromChunksK (MutArray.buildChunks n)
1958+-- >>> writeWith n = Fold.rmapM MutArray.fromArrayStreamK (MutArray.writeChunks n)
2328-- /Pre-release/
1960-- /Pre-release/
2329−{-# INLINE_NORMAL createWith #-}
1961+{-# INLINE_NORMAL writeWith #-}
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
2335−{-# DEPRECATED writeWith "Please use createWith instead." #-}
2336−{-# INLINE writeWith #-}
2337writeWith :: forall m a. (MonadIO m, Unbox a)
1962writeWith :: forall m a. (MonadIO m, Unbox a)
2338 => Int -> Fold m a (MutArray a)
1963 => Int -> Fold m a (MutArray a)
2339−writeWith = createWith
1964+-- writeWith n = FL.rmapM rightSize $ writeAppendWith (* 2) (new n)
1965+writeWith = writeWithAs Unpinned
2341-- | Fold the whole input to a single array.
1967-- | Fold the whole input to a single array.
2343−-- Same as 'createWith' using an initial array size of 'arrayChunkBytes' bytes
1969+-- Same as 'writeWith' using an initial array size of 'arrayChunkBytes' bytes
2344-- rounded up to the element size.
1970-- rounded up to the element size.
2346-- /Caution! Do not use this on infinite streams./
1972-- /Caution! Do not use this on infinite streams./
2348−{-# INLINE create #-}
2349−create :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2350−create = createWith (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
2352−-- XXX Deprecate in major
2353−-- {-# DEPRECATED write "Please use create instead." #-}
2354{-# INLINE write #-}
1974{-# INLINE write #-}
2355write :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
1975write :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2356−write = create
1976+write = writeWith (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
2358−-- | Like 'create' but creates a pinned array.
1978+-- | Like 'write' but creates a pinned array.
2359−{-# INLINE pinnedCreate #-}
2360−pinnedCreate :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2362− writeWithAs Pinned (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
2364−{-# DEPRECATED pinnedWrite "Please use pinnedCreate instead." #-}
2365{-# INLINE pinnedWrite #-}
1979{-# INLINE pinnedWrite #-}
2366pinnedWrite :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
1980pinnedWrite :: forall m a. (MonadIO m, Unbox a) => Fold m a (MutArray a)
2367−pinnedWrite = pinnedCreate
1981+pinnedWrite =
1982+ writeWithAs Pinned (allocBytesToElemCount (undefined :: a) arrayChunkBytes)
2369-------------------------------------------------------------------------------
1984-------------------------------------------------------------------------------
2370-- construct from streams, known size
1985-- construct from streams, known size
@@ -2374,7 +1989,7 @@ pinnedWrite = pinnedCreate
2374fromStreamDNAs :: forall m a. (MonadIO m, Unbox a)
1989fromStreamDNAs :: forall m a. (MonadIO m, Unbox a)
2375 => PinnedState -> Int -> D.Stream m a -> m (MutArray a)
1990 => PinnedState -> Int -> D.Stream m a -> m (MutArray a)
2376fromStreamDNAs ps limit str = do
1991fromStreamDNAs ps limit str = do
2377− (arr :: MutArray a) <- newAs ps limit
1992+ (arr :: MutArray a) <- liftIO $ newAs ps limit
2378 end <- D.foldlM' (fwrite (arrContents arr)) (return $ arrEnd arr) $ D.take limit str
1993 end <- D.foldlM' (fwrite (arrContents arr)) (return $ arrEnd arr) $ D.take limit str
2379 return $ arr {arrEnd = end}
1994 return $ arr {arrEnd = end}
@@ -2384,21 +1999,15 @@ fromStreamDNAs ps limit str = do
2384 liftIO $ pokeAt ptr arrContents x
1999 liftIO $ pokeAt ptr arrContents x
2385 return $ INDEX_NEXT(ptr,a)
2000 return $ INDEX_NEXT(ptr,a)
2387−-- | Use the 'createOf' fold instead.
2002+-- | Use the 'writeN' fold instead.
2389−-- >>> fromStreamN n = Stream.fold (MutArray.createOf n)
2004+-- >>> fromStreamDN n = Stream.fold (MutArray.writeN n)
2391−{-# INLINE_NORMAL fromStreamN #-}
2392−fromStreamN :: forall m a. (MonadIO m, Unbox a)
2393− => Int -> D.Stream m a -> m (MutArray a)
2394−-- fromStreamDN n = D.fold (createOf n)
2395−fromStreamN = fromStreamDNAs Unpinned
2397−{-# DEPRECATED fromStreamDN "Please use fromStreamN instead." #-}
2398−{-# INLINE fromStreamDN #-}
2006+{-# INLINE_NORMAL fromStreamDN #-}
2399fromStreamDN :: forall m a. (MonadIO m, Unbox a)
2007fromStreamDN :: forall m a. (MonadIO m, Unbox a)
2400 => Int -> D.Stream m a -> m (MutArray a)
2008 => Int -> D.Stream m a -> m (MutArray a)
2009+-- fromStreamDN n = D.fold (writeN n)
2401−fromStreamDN = fromStreamN
2010+fromStreamDN = fromStreamDNAs Unpinned
2403-- | Create a 'MutArray' from the first N elements of a list. The array is
2012-- | Create a 'MutArray' from the first N elements of a list. The array is
2404-- allocated to size N, if the list terminates before N elements then the
2013-- allocated to size N, if the list terminates before N elements then the
@@ -2418,70 +2027,23 @@ pinnedFromListN n xs = fromStreamDNAs Pinned n $ D.fromList xs
2418-- /Pre-release/
2027-- /Pre-release/
2419{-# INLINE fromListRevN #-}
2028{-# INLINE fromListRevN #-}
2420fromListRevN :: (MonadIO m, Unbox a) => Int -> [a] -> m (MutArray a)
2029fromListRevN :: (MonadIO m, Unbox a) => Int -> [a] -> m (MutArray a)
2421−fromListRevN n xs = D.fold (revCreateOf n) $ D.fromList xs
2030+fromListRevN n xs = D.fold (writeRevN n) $ D.fromList xs
2423-- | Convert a pure stream in Identity monad to a mutable array.
2032-- | Convert a pure stream in Identity monad to a mutable array.
2424{-# INLINABLE fromPureStreamN #-}
2033{-# INLINABLE fromPureStreamN #-}
2425fromPureStreamN :: (MonadIO m, Unbox a) =>
2034fromPureStreamN :: (MonadIO m, Unbox a) =>
2426 Int -> Stream Identity a -> m (MutArray a)
2035 Int -> Stream Identity a -> m (MutArray a)
2427fromPureStreamN n xs =
2036fromPureStreamN n xs =
2428− D.fold (createOf n) $ D.morphInner (return . runIdentity) xs
2037+ liftIO $ D.fold (writeN n) $ D.morphInner (return . runIdentity) xs
2430-- | Convert a pure stream in Identity monad to a mutable array.
2039-- | Convert a pure stream in Identity monad to a mutable array.
2431{-# INLINABLE fromPureStream #-}
2040{-# INLINABLE fromPureStream #-}
2432fromPureStream :: (MonadIO m, Unbox a) => Stream Identity a -> m (MutArray a)
2041fromPureStream :: (MonadIO m, Unbox a) => Stream Identity a -> m (MutArray a)
2433fromPureStream xs =
2042fromPureStream xs =
2434− D.fold create $ D.morphInner (return . runIdentity) xs
2043+ liftIO $ D.fold write $ D.morphInner (return . runIdentity) xs
2436−{-# INLINABLE fromPtrN #-}
2437−fromPtrN :: MonadIO m => Int -> Ptr Word8 -> m (MutArray Word8)
2438−fromPtrN len addr = do
2439− -- memcpy is better than stream copy when the size is known.
2440− -- XXX We can implement a stream copy in a similar way by streaming Word64
2441− -- first and then remaining Word8.
2443− _ <- unsafeAsPtr arr
2444− (\ptr -> liftIO $ c_memcpy ptr addr (fromIntegral len))
2445− return (arr {arrEnd = len})
2447−{-# INLINABLE fromByteStr# #-}
2448−fromByteStr# :: MonadIO m => Addr# -> m (MutArray Word8)
2449−fromByteStr# addr = do
2450− -- It is better to count the size first and allocate exact space.
2451− -- Also, memcpy is better than stream copy when the size is known.
2452− -- C strlen compares 4 bytes at a time, so is better than the stream
2453− -- version. https://github.com/bminor/glibc/blob/master/string/strlen.c
2454− -- XXX We can possibly use a stream of Word64 to do the same.
2455− -- fromByteStr# addr = fromPureStream (D.fromByteStr# addr)
2456− len <- liftIO $ c_strlen (Ptr addr)
2457− let lenInt = fromIntegral len
2459− _ <- unsafeAsPtr arr (\ptr -> liftIO $ c_memcpy ptr (Ptr addr) len)
2460− return (arr {arrEnd = lenInt})
2462−-------------------------------------------------------------------------------
2463−-- convert a stream of arrays to a single array by reallocating and copying
2464−-------------------------------------------------------------------------------
2466−-- XXX Both of these implementations of splicing seem to perform equally well.
2467−-- We need to perform benchmarks over a range of sizes though.
2469−-- | Also see 'fromChunksK'.
2470−{-# INLINE fromChunksRealloced #-}
2471−fromChunksRealloced :: forall m a. (MonadIO m, Unbox a)
2472− => Stream m (MutArray a) -> m (MutArray a)
2473−fromChunksRealloced s = do
2476− Just (a, strm) -> do
2477− arr <- D.foldlM' spliceExp (pure a) strm
2478− -- Reallocation is exponential so there may be 50% empty space in
2479− -- worst case. One more reallocation to reclaim the space.
2481− Nothing -> pure nil
2483-------------------------------------------------------------------------------
2045-------------------------------------------------------------------------------
2484−-- convert a stream of arrays to a single array by buffering arrays first
2046+-- convert stream to a single array
2485-------------------------------------------------------------------------------
2047-------------------------------------------------------------------------------
2487{-# INLINE arrayStreamKLength #-}
2049{-# INLINE arrayStreamKLength #-}
@@ -2491,72 +2053,34 @@ arrayStreamKLength as = K.foldl' (+) 0 (K.map length as)
2491-- | Convert an array stream to an array. Note that this requires peak memory
2053-- | Convert an array stream to an array. Note that this requires peak memory
2492-- that is double the size of the array stream.
2054-- that is double the size of the array stream.
2494−{-# INLINE fromChunkskAs #-}
2495−fromChunkskAs :: (Unbox a, MonadIO m) =>
2496− PinnedState -> StreamK m (MutArray a) -> m (MutArray a)
2497−fromChunkskAs ps as = do
2498− len <- arrayStreamKLength as
2499− arr <- newAs ps len
2500− -- XXX is StreamK fold faster or StreamD fold?
2501− K.foldlM' spliceUnsafe (pure arr) as
2502− -- fromStreamDN len $ D.unfoldMany reader $ D.fromStreamK as
2504−-- XXX Need to compare this with fromChunks and fromChunkList and keep the
2505−-- fastest or simplest one if all are equally fast.
2507−-- | Convert an array stream to an array. Note that this requires peak memory
2508−-- that is double the size of the array stream.
2510−-- Also see 'fromChunksRealloced'.
2512−{-# INLINE fromChunksK #-}
2513−fromChunksK :: (Unbox a, MonadIO m) =>
2514− StreamK m (MutArray a) -> m (MutArray a)
2515−fromChunksK = fromChunkskAs Unpinned
2517−{-# DEPRECATED fromArrayStreamK "Please use fromChunksK instead." #-}
2518{-# INLINE fromArrayStreamK #-}
2056{-# INLINE fromArrayStreamK #-}
2519fromArrayStreamK :: (Unbox a, MonadIO m) =>
2057fromArrayStreamK :: (Unbox a, MonadIO m) =>
2520 StreamK m (MutArray a) -> m (MutArray a)
2058 StreamK m (MutArray a) -> m (MutArray a)
2521−fromArrayStreamK = fromChunksK
2059+fromArrayStreamK as = do
2060+ len <- arrayStreamKLength as
2061+ fromStreamDN len $ D.unfoldMany reader $ D.fromStreamK as
2523{-# INLINE fromStreamDAs #-}
2063{-# INLINE fromStreamDAs #-}
2524fromStreamDAs ::
2064fromStreamDAs ::
2525 (MonadIO m, Unbox a) => PinnedState -> D.Stream m a -> m (MutArray a)
2065 (MonadIO m, Unbox a) => PinnedState -> D.Stream m a -> m (MutArray a)
2526−fromStreamDAs ps m =
2527− arrayStreamKFromStreamDAs Unpinned m >>= fromChunkskAs ps
2066+fromStreamDAs ps m = arrayStreamKFromStreamDAs ps m >>= fromArrayStreamK
2529−-- | 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
2531−-- as efficient when the size is already known.
2533−-- Note that if the input stream is too large memory allocation for the array
2534−-- may fail. When the stream size is not known, `chunksOf` followed by
2535−-- processing of indvidual arrays in the resulting stream should be preferred.
2538−{-# INLINE fromStream #-}
2539−fromStream :: (MonadIO m, Unbox a) => Stream m a -> m (MutArray a)
2540−fromStream = fromStreamDAs Unpinned
2542−-- fromStream (Stream m) = P.fold create m
2543-- CAUTION: a very large number (millions) of arrays can degrade performance
2068-- CAUTION: a very large number (millions) of arrays can degrade performance
2544-- due to GC overhead because we need to buffer the arrays before we flatten
2069-- due to GC overhead because we need to buffer the arrays before we flatten
2545-- all the arrays.
2070-- all the arrays.
2547−-- XXX Compare if this is faster or "fold create".
2072+-- XXX Compare if this is faster or "fold write".
2549-- | We could take the approach of doubling the memory allocation on each
2074-- | We could take the approach of doubling the memory allocation on each
2550-- overflow. This would result in more or less the same amount of copying as in
2075-- overflow. This would result in more or less the same amount of copying as in
2551-- the chunking approach. However, if we have to shrink in the end then it may
2076-- the chunking approach. However, if we have to shrink in the end then it may
2552-- result in an extra copy of the entire data.
2077-- result in an extra copy of the entire data.
2554−-- >>> fromStreamD = StreamD.fold MutArray.create
2079+-- >>> fromStreamD = StreamD.fold MutArray.write
2556{-# INLINE fromStreamD #-}
2081{-# INLINE fromStreamD #-}
2557−{-# DEPRECATED fromStreamD "Please use fromStream instead." #-}
2558fromStreamD :: (MonadIO m, Unbox a) => D.Stream m a -> m (MutArray a)
2082fromStreamD :: (MonadIO m, Unbox a) => D.Stream m a -> m (MutArray a)
2559−fromStreamD = fromStream
2083+fromStreamD = fromStreamDAs Unpinned
2561-- | Create a 'MutArray' from a list. The list must be of finite size.
2085-- | Create a 'MutArray' from a list. The list must be of finite size.
@@ -2581,10 +2105,6 @@ fromListRev xs = fromListRevN (Prelude.length xs) xs
2581-- Cloning
2105-- Cloning
2582-------------------------------------------------------------------------------
2106-------------------------------------------------------------------------------
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.
2588{-# INLINE cloneAs #-}
2108{-# INLINE cloneAs #-}
2589cloneAs ::
2109cloneAs ::
2590 ( MonadIO m
2110 ( MonadIO m
@@ -2594,7 +2114,7 @@ cloneAs ::
2595 => PinnedState -> MutArray a -> m (MutArray a)
2115 => PinnedState -> MutArray a -> m (MutArray a)
2596cloneAs ps src =
2116cloneAs ps src =
2597− do
2117+ liftIO $ do
2598 let startSrc = arrStart src
2118 let startSrc = arrStart src
2599 srcLen = arrEnd src - startSrc
2119 srcLen = arrEnd src - startSrc
2600 newArrContents <-
2120 newArrContents <-
@@ -2633,16 +2153,17 @@ spliceCopy :: forall m a. MonadIO m =>
2633 Unbox a =>
2153 Unbox a =>
2635 MutArray a -> MutArray a -> m (MutArray a)
2155 MutArray a -> MutArray a -> m (MutArray a)
2636−spliceCopy arr1 arr2 = do
2156+spliceCopy arr1 arr2 = liftIO $ do
2637 let start1 = arrStart arr1
2157 let start1 = arrStart arr1
2638 start2 = arrStart arr2
2158 start2 = arrStart arr2
2639 len1 = arrEnd arr1 - start1
2159 len1 = arrEnd arr1 - start1
2640 len2 = arrEnd arr2 - start2
2160 len2 = arrEnd arr2 - start2
2641− let len = len1 + len2
2161+ let newLen = len1 + len2
2642 newArrContents <-
2162 newArrContents <-
2643 if Unboxed.isPinned (arrContents arr1)
2163 if Unboxed.isPinned (arrContents arr1)
2644− then liftIO $ Unboxed.pinnedNew len
2164+ then Unboxed.pinnedNew newLen
2645− else liftIO $ Unboxed.new len
2165+ else Unboxed.new newLen
2166+ let len = len1 + len2
2646 putSliceUnsafe (arrContents arr1) start1 newArrContents 0 len1
2167 putSliceUnsafe (arrContents arr1) start1 newArrContents 0 len1
2647 putSliceUnsafe (arrContents arr2) start2 newArrContents len1 len2
2168 putSliceUnsafe (arrContents arr2) start2 newArrContents len1 len2
2648 return $ MutArray newArrContents 0 len len
2169 return $ MutArray newArrContents 0 len len
@@ -2654,7 +2175,7 @@ spliceCopy arr1 arr2 = do
2654spliceUnsafe :: MonadIO m =>
2175spliceUnsafe :: MonadIO m =>
2655 MutArray a -> MutArray a -> m (MutArray a)
2176 MutArray a -> MutArray a -> m (MutArray a)
2656spliceUnsafe dst src =
2177spliceUnsafe dst src =
2657− do
2178+ liftIO $ do
2658 let startSrc = arrStart src
2179 let startSrc = arrStart src
2659 srcLen = arrEnd src - startSrc
2180 srcLen = arrEnd src - startSrc
2660 endDst = arrEnd dst
2181 endDst = arrEnd dst
@@ -2676,7 +2197,7 @@ spliceWith :: forall m a. (MonadIO m, Unbox a) =>
2676 (Int -> Int -> Int) -> MutArray a -> MutArray a -> m (MutArray a)
2197 (Int -> Int -> Int) -> MutArray a -> MutArray a -> m (MutArray a)
2677spliceWith sizer dst@(MutArray _ start end bound) src = do
2198spliceWith sizer dst@(MutArray _ start end bound) src = do
2679− let f = appendWith (`sizer` byteLength src) (return dst)
2200+ let f = writeAppendWith (`sizer` byteLength src) (return dst)
2680 in D.fold f (toStreamD src)
2201 in D.fold f (toStreamD src)
2682 assert (end <= bound) (return ())
2203 assert (end <= bound) (return ())
@@ -2692,7 +2213,7 @@ spliceWith sizer dst@(MutArray _ start end bound) src = do
2692 $ "splice: newSize is less than the total size "
2213 $ "splice: newSize is less than the total size "
2693 ++ "of arrays being appended. Please check the "
2214 ++ "of arrays being appended. Please check the "
2694 ++ "sizer function passed."
2215 ++ "sizer function passed."
2695− realloc newSizeInBytes dst
2216+ liftIO $ realloc newSizeInBytes dst
2696 else return dst
2217 else return dst
2697 spliceUnsafe dst1 src
2218 spliceUnsafe dst1 src
@@ -2729,24 +2250,14 @@ spliceExp = spliceWith (\l1 l2 -> max (l1 * 2) (l1 + l2))
2729-- Splitting
2250-- Splitting
2730-------------------------------------------------------------------------------
2251-------------------------------------------------------------------------------
2732−-- | Generate a stream of array slices using a predicate. The array element
2733−-- matching the predicate is dropped.
2736−{-# INLINE splitOn #-}
2737−splitOn :: (MonadIO m, Unbox a) =>
2738− (a -> Bool) -> MutArray a -> Stream m (MutArray a)
2739−splitOn predicate arr =
2740− fmap (\(i, len) -> getSliceUnsafe i len arr)
2741− $ D.indexOnSuffix predicate (read arr)
2743-- | Drops the separator byte
2253-- | Drops the separator byte
2744{-# INLINE breakOn #-}
2254{-# INLINE breakOn #-}
2745breakOn :: MonadIO m
2255breakOn :: MonadIO m
2746 => Word8 -> MutArray Word8 -> m (MutArray Word8, Maybe (MutArray Word8))
2256 => Word8 -> MutArray Word8 -> m (MutArray Word8, Maybe (MutArray Word8))
2747−breakOn sep arr@MutArray{..} = unsafeAsPtr arr $ \p -> liftIO $ do
2257+breakOn sep arr@MutArray{..} = asPtrUnsafe arr $ \p -> liftIO $ do
2258+ -- XXX Instead of using asPtrUnsafe (pinning memory) we can pass unlifted
2259+ -- Addr# to memchr and it should be safe (from ghc 8.4).
2748 -- XXX We do not need memchr here, we can use a Haskell equivalent.
2260 -- XXX We do not need memchr here, we can use a Haskell equivalent.
2749− -- Need efficient stream based primitives that work on Word64.
2750 loc <- c_memchr p sep (fromIntegral $ byteLength arr)
2261 loc <- c_memchr p sep (fromIntegral $ byteLength arr)
2751 let sepIndex = loc `minusPtr` p
2262 let sepIndex = loc `minusPtr` p
2752 return $
2263 return $
@@ -2767,41 +2278,32 @@ breakOn sep arr@MutArray{..} = unsafeAsPtr arr $ \p -> liftIO $ do
2770−-- | Like 'splitAt' but does not check whether the index is valid.
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)
2779− { arrContents = arrContents
2780− , arrStart = arrStart
2785− { arrContents = arrContents
2788− , arrBound = arrBound
2792-- | Create two slices of an array without copying the original array. The
2281-- | Create two slices of an array without copying the original array. The
2793-- specified index @i@ is the first index of the second slice.
2282-- specified index @i@ is the first index of the second slice.
2795−{-# INLINE splitAt #-}
2796splitAt :: forall a. Unbox a => Int -> MutArray a -> (MutArray a, MutArray a)
2284splitAt :: forall a. Unbox a => Int -> MutArray a -> (MutArray a, MutArray a)
2797−splitAt i arr =
2285+splitAt i arr@MutArray{..} =
2798 let maxIndex = length arr - 1
2286 let maxIndex = length arr - 1
2799 in if i < 0
2287 in if i < 0
2800 then error "sliceAt: negative array index"
2288 then error "sliceAt: negative array index"
2801 else if i > maxIndex
2289 else if i > maxIndex
2802 then error $ "sliceAt: specified array index " ++ show i
2290 then error $ "sliceAt: specified array index " ++ show i
2803 ++ " is beyond the maximum index " ++ show maxIndex
2291 ++ " is beyond the maximum index " ++ show maxIndex
2804− else unsafeSplitAt i arr
2292+ else let off = i * SIZE_OF(a)
2295+ { arrContents = arrContents
2296+ , arrStart = arrStart
2301+ { arrContents = arrContents
2304+ , arrBound = arrBound
2806-------------------------------------------------------------------------------
2308-------------------------------------------------------------------------------
2807-- Casting
2309-- Casting
@@ -2851,13 +2353,9 @@ cast arr =
2851-- guarantees that unsafe calls will be performed in the calling thread. Making
2353-- guarantees that unsafe calls will be performed in the calling thread. Making
2852-- it safe to pass heap-allocated objects to unsafe functions.
2354-- it safe to pass heap-allocated objects to unsafe functions.
2854−-- XXX Should we just name it asPtr, the unsafety is implicit for any pointer
2356+-- Should we just name it asPtr, the unsafety is implicit for any pointer
2855-- operations. And we are safe from Haskell perspective because we will be
2357-- operations. And we are safe from Haskell perspective because we will be
2856-- pinning the memory.
2358-- pinning the memory.
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.
2862-- | Use a @MutArray a@ as @Ptr a@. This is useful when we want to pass an
2360-- | Use a @MutArray a@ as @Ptr a@. This is useful when we want to pass an
2863-- array as a pointer to some operating system call or to a "safe" FFI call.
2361-- array as a pointer to some operating system call or to a "safe" FFI call.
@@ -2875,377 +2373,48 @@ cast arr =
2876-- /Pre-release/
2374-- /Pre-release/
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))
2884−{-# DEPRECATED asPtrUnsafe "Please use unsafePinnedAsPtr instead." #-}
2885{-# INLINE asPtrUnsafe #-}
2376{-# INLINE asPtrUnsafe #-}
2886asPtrUnsafe :: MonadIO m => MutArray a -> (Ptr a -> m b) -> m b
2377asPtrUnsafe :: MonadIO m => MutArray a -> (Ptr a -> m b) -> m b
2887−asPtrUnsafe = unsafePinnedAsPtr
2378+asPtrUnsafe arr f =
2888−
2379+ Unboxed.asPtrUnsafe
2889−{-# INLINE unsafeAsPtr #-}
2890−unsafeAsPtr :: MonadIO m => MutArray a -> (Ptr a -> m b) -> m b
2892− Unboxed.unsafeAsPtr
2893 (arrContents arr) (\ptr -> f (ptr `plusPtr` arrStart arr))
2380 (arrContents arr) (\ptr -> f (ptr `plusPtr` arrStart arr))
2895-------------------------------------------------------------------------------
2382-------------------------------------------------------------------------------
2896-- Equality
2383-- Equality
2897-------------------------------------------------------------------------------
2384-------------------------------------------------------------------------------
2899−-- | Byte compare two arrays. Compare the length of the arrays. If the length
2386+-- | Compare the length of the arrays. If the length is equal, compare the
2900−-- is equal, compare the lexicographical ordering of two underlying byte arrays
2387+-- lexicographical ordering of two underlying byte arrays otherwise return the
2901−-- otherwise return the result of length comparison.
2388+-- result of length comparison.
2903−-- /Unsafe/: Note that the 'Unbox' instance of sum types with constructors of
2904−-- different sizes may leave some memory uninitialized which can make byte
2905−-- comparison unreliable.
2907-- /Pre-release/
2390-- /Pre-release/
2908−{-# INLINE byteCmp #-}
2909−byteCmp :: MonadIO m => MutArray a -> MutArray a -> m Ordering
2910−byteCmp arr1 arr2 = do
2911− let marr1 = getMutableByteArray# (arrContents arr1)
2912− marr2 = getMutableByteArray# (arrContents arr2)
2913− !(I# st1#) = arrStart arr1
2914− !(I# st2#) = arrStart arr2
2915− !(I# len#) = byteLength arr1
2916− case compare (byteLength arr1) (byteLength arr2) of
2918− r <- liftIO $ IO $ \s# ->
2921− (compareByteArrays#
2922− (unsafeCoerce# marr1)
2924− (unsafeCoerce# marr2)
2928− return $ compare r 0
2931{-# INLINE cmp #-}
2391{-# INLINE cmp #-}
2932−{-# DEPRECATED cmp "Please use byteCmp instead." #-}
2933cmp :: MonadIO m => MutArray a -> MutArray a -> m Ordering
2392cmp :: MonadIO m => MutArray a -> MutArray a -> m Ordering
2934−cmp = byteCmp
2393+cmp arr1 arr2 =
2936−-- | Byte equality of two arrays.
2395+ $ do
2937−--
2396+ let marr1 = getMutableByteArray# (arrContents arr1)
2938−-- >>> byteEq arr1 arr2 = (==) EQ $ MArray.byteCmp arr1 arr2
2397+ marr2 = getMutableByteArray# (arrContents arr2)
2939−--
2398+ !(I# st1#) = arrStart arr1
2940−-- /Unsafe/: See 'byteCmp'.
2399+ !(I# st2#) = arrStart arr2
2941−{-# INLINE byteEq #-}
2400+ !(I# len#) = byteLength arr1
2942−byteEq :: MonadIO m => MutArray a -> MutArray a -> m Bool
2401+ case compare (byteLength arr1) (byteLength arr2) of
2943−byteEq arr1 arr2 = fmap (EQ ==) $ byteCmp arr1 arr2
2402+ EQ -> do
2944−
2403+ r <- liftIO $ IO $ \s# ->
2945−-------------------------------------------------------------------------------
2404+ let res =
2947−-------------------------------------------------------------------------------
2406+ (compareByteArrays#
2948−
2407+ (unsafeCoerce# marr1)
2949−-- Note: LE versions avoid an extra copy compared to GE. LE parser trades
2408+ st1#
2950−-- backtracking one array in lieu of avoiding a copy. However, LE and GE both
2409+ (unsafeCoerce# marr2)
2951−-- can leave some memory unused. They can split the last array to fit it
2410+ st2#
2952−-- exactly in the space.
2411+ len#)
2953−
2412+ in (# s#, res #)
2954−{-# INLINE_NORMAL pCompactLeAs #-}
2413+ return $ compare r 0
2955−pCompactLeAs ::
2414+ x -> return x
2956− forall m a. (MonadIO m, Unbox a)
2957− => PinnedState -> Int -> Parser (MutArray a) m (MutArray a)
2958−pCompactLeAs ps maxElems = Parser step initial extract
2962− maxBytes = maxElems * SIZE_OF(a)
2964− functionName = "Streamly.Internal.Data.MutArray.pCompactLE"
2971− ++ ": the size of arrays ["
2972− ++ show maxElems ++ "] must be a natural number"
2973− else Parser.IPartial Nothing
2977− $ let len = byteLength arr
2978− in if len >= maxBytes
2979− then Parser.Done 0 arr
2980− else Parser.Partial 0 (Just arr)
2981− -- XXX Split the last array to use the space more compactly.
2982− step (Just buf) arr =
2983− let len = byteLength buf + byteLength arr
2984− in if len > maxBytes
2985− then return $ Parser.Done 1 buf
2988− if byteCapacity buf < maxBytes
2989− then liftIO $ reallocExplicitAs
2990− ps (SIZE_OF(a)) maxBytes buf
2992− buf2 <- spliceUnsafe buf1 arr
2993− return $ Parser.Partial 0 (Just buf2)
2995− extract Nothing = return $ Parser.Done 0 nil
2996− extract (Just buf) = return $ Parser.Done 0 buf
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.
3003−-- @maxElems@ must be greater than 0.
3005−-- Generates unpinned arrays irrespective of the pinning status of input
3009−{-# INLINE pCompactLE #-}
3011− forall m a. (MonadIO m, Unbox a)
3012− => Int -> Parser (MutArray a) m (MutArray a)
3013−pCompactLE = pCompactLeAs Unpinned
3015−-- | Pinned version of 'pCompactLE'.
3016−{-# INLINE pPinnedCompactLE #-}
3018− forall m a. (MonadIO m, Unbox a)
3019− => Int -> Parser (MutArray a) m (MutArray a)
3020−pPinnedCompactLE = pCompactLeAs Pinned
3022−data SpliceState s arr
3024− | SpliceBuffering s arr
3025− | SpliceYielding arr (SpliceState s arr)
3028−-- This mutates the first array (if it has space) to append values from the
3029−-- second one. This would work for immutable arrays as well because an
3030−-- immutable array never has additional space so a new array is allocated
3031−-- instead of mutating it.
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) =
3037− D.Stream step' (SpliceInitial state)
3041− maxBytes = maxElems * SIZE_OF(a)
3043− functionName = "Streamly.Internal.Data.MutArray.rCompactLE"
3045− {-# INLINE_LATE step' #-}
3046− step' gst (SpliceInitial st) = do
3047− when (maxElems <= 0) $
3048− -- XXX we can pass the module string from the higher level API
3049− error $ functionName ++ ": the size of arrays [" ++ show maxElems
3050− ++ "] must be a natural number"
3053− D.Yield arr s -> return $
3054− let len = byteLength arr
3055− in if len >= maxBytes
3056− then D.Skip (SpliceYielding arr (SpliceInitial s))
3057− else D.Skip (SpliceBuffering s arr)
3058− D.Skip s -> return $ D.Skip (SpliceInitial s)
3059− D.Stop -> return D.Stop
3061− -- XXX Split the last array to use the space more compactly.
3062− step' gst (SpliceBuffering st buf) = do
3065− D.Yield arr s -> do
3066− let len = byteLength buf + byteLength arr
3069− D.Skip (SpliceYielding buf (SpliceBuffering s arr))
3071− buf1 <- if byteCapacity buf < maxBytes
3072− then liftIO $ reallocExplicitAs
3073− ps (SIZE_OF(a)) maxBytes buf
3075− buf2 <- spliceUnsafe buf1 arr
3076− return $ D.Skip (SpliceBuffering s buf2)
3077− D.Skip s -> return $ D.Skip (SpliceBuffering s buf)
3078− D.Stop -> return $ D.Skip (SpliceYielding buf SpliceFinish)
3080− step' _ SpliceFinish = return D.Stop
3082− step' _ (SpliceYielding arr next) = return $ D.Yield arr next
3085−{-# INLINE_NORMAL fCompactGeAs #-}
3087− 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
3093− minBytes = minElems * SIZE_OF(a)
3095− functionName = "Streamly.Internal.Data.MutArray.fCompactGE"
3102− ++ ": the size of arrays ["
3103− ++ show minElems ++ "] must be a natural number"
3104− else FL.Partial Nothing
3108− $ let len = byteLength arr
3109− in if len >= minBytes
3111− else FL.Partial (Just arr)
3112− -- XXX Buffer arrays as a list to avoid copy and reallocations
3113− step (Just buf) arr = do
3114− let len = byteLength buf + byteLength arr
3116− if byteCapacity buf < len
3117− then liftIO $ reallocExplicitAs
3118− ps (SIZE_OF(a)) (max minBytes len) buf
3120− buf2 <- spliceUnsafe buf1 arr
3122− then return $ FL.Done buf2
3123− else return $ FL.Partial (Just buf2)
3125− extract Nothing = return nil
3126− extract (Just buf) = return buf
3128−-- | Fold @fCompactGE minElems@ coalesces adjacent arrays in the input stream
3129−-- until the size becomes greater than or equal to @minElems@.
3131−-- Generates unpinned arrays irrespective of the pinning status of input
3133−{-# INLINE fCompactGE #-}
3135− forall m a. (MonadIO m, Unbox a)
3136− => Int -> FL.Fold m (MutArray a) (MutArray a)
3137−fCompactGE = fCompactGeAs Unpinned
3139−-- | Pinned version of 'fCompactGE'.
3140−{-# INLINE fPinnedCompactGE #-}
3142− forall m a. (MonadIO m, Unbox a)
3143− => Int -> FL.Fold m (MutArray a) (MutArray a)
3144−fPinnedCompactGE = fCompactGeAs Pinned
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) =
3152− Fold step initial extract final
3156− minBytes = minElems * SIZE_OF(a)
3158− functionName = "Streamly.Internal.Data.MutArray.lCompactGE"
3161− when (minElems <= 0) $
3162− -- XXX we can pass the module string from the higher level API
3163− error $ functionName ++ ": the size of arrays ["
3164− ++ show minElems ++ "] must be a natural number"
3167− return $ first (Tuple' Nothing) r
3169− {-# INLINE runInner #-}
3170− runInner len acc buf =
3175− FL.Done _ -> return $ FL.Done ()
3179− return $ first (Tuple' Nothing) res
3180− else return $ FL.Partial $ Tuple' (Just buf) acc
3182− step (Tuple' Nothing r1) arr =
3183− runInner (byteLength arr) r1 arr
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
3192− buf2 <- spliceUnsafe buf1 arr
3193− runInner len r1 buf2
3195− -- 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
3199− -- extract forces the pending buffer to be sent to the fold which is not
3201− extract _ = error "lCompactGE: not designed for scanning"
3203− final (Tuple' Nothing r1) = final1 r1
3204− final (Tuple' (Just buf) r1) = do
3207− FL.Partial rr -> final1 rr
3208− FL.Done _ -> return ()
3210−-- | Like 'compactGE' but for transforming folds instead of stream.
3212−-- >>> lCompactGE n = Fold.many (MutArray.fCompactGE n)
3214−-- Generates unpinned arrays irrespective of the pinning status of input
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
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
3227−-- | @compactGE n stream@ coalesces adjacent arrays in the @stream@ until
3228−-- the size becomes greater than or equal to @n@.
3230−-- >>> compactGE n = Stream.foldMany (MutArray.fCompactGE n)
3232−{-# INLINE compactGE #-}
3234− (MonadIO m, Unbox a)
3235− => Int -> Stream m (MutArray a) -> Stream m (MutArray a)
3236−compactGE n = D.foldMany (fCompactGE n)
3238−-- | 'compactEQ n' coalesces adajacent arrays in the input stream to
3239−-- arrays of exact size @n@.
3242−{-# INLINE compactEQ #-}
3243−compactEQ :: -- (MonadIO m, Unbox a) =>
3244− Int -> Stream m (MutArray a) -> Stream m (MutArray a)
3245−compactEQ _n = undefined -- D.parseManyD (pCompactEQ n)
3247-------------------------------------------------------------------------------
2416-------------------------------------------------------------------------------
3248−-- In-place mutation algorithms
2417+-- NFData
3249-------------------------------------------------------------------------------
2418-------------------------------------------------------------------------------
3251-- | Strip elements which match with predicate from both ends.
2420-- | Strip elements which match with predicate from both ends.