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jberryman
GHC
Commits
d3601a1b
Commit
d3601a1b
authored
Apr 01, 2002
by
simonpj
Browse files
[project @ 2002-04-01 08:17:57 by simonpj]
Split out FastMutInt separately
parent
0b326e7a
Changes
2
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Inline
Side-by-side
ghc/compiler/utils/Binary.hs
View file @
d3601a1b
...
...
@@ -55,6 +55,7 @@ import FastString
import
Unique
import
Panic
import
UniqFM
import
FastMutInt
#
if
__GLASGOW_HASKELL__
<
503
import
IOExts
...
...
@@ -554,26 +555,6 @@ instance Binary (Bin a) where
put_
bh
(
BinPtr
i
)
=
put_
bh
i
get
bh
=
do
i
<-
get
bh
;
return
(
BinPtr
i
)
-- -----------------------------------------------------------------------------
-- unboxed mutable Ints
#
ifdef
__GLASGOW_HASKELL__
data
FastMutInt
=
FastMutInt
(
MutableByteArray
#
RealWorld
)
newFastMutInt
=
IO
$
\
s
->
case
newByteArray
#
size
s
of
{
(
#
s
,
arr
#
)
->
(
#
s
,
FastMutInt
arr
#
)
}
where
I
#
size
=
SIZEOF_HSWORD
readFastMutInt
(
FastMutInt
arr
)
=
IO
$
\
s
->
case
readIntArray
#
arr
0
#
s
of
{
(
#
s
,
i
#
)
->
(
#
s
,
I
#
i
#
)
}
writeFastMutInt
(
FastMutInt
arr
)
(
I
#
i
)
=
IO
$
\
s
->
case
writeIntArray
#
arr
0
#
i
s
of
{
s
->
(
#
s
,
()
#
)
}
#
endif
-- -----------------------------------------------------------------------------
-- Lazy reading/writing
...
...
ghc/compiler/utils/FastMutInt.lhs
0 → 100644
View file @
d3601a1b
{-# OPTIONS -cpp #-}
--
-- (c) The University of Glasgow 2002
--
-- Unboxed mutable Ints
\begin{code}
module FastMutInt(
FastMutInt, newFastMutInt,
readFastMutInt, writeFastMutInt,
incFastMutInt, incFastMutIntBy
) where
#include "MachDeps.h"
#ifndef SIZEOF_HSINT
#define SIZEOF_HSINT INT_SIZE_IN_BYTES
#endif
#if __GLASGOW_HASKELL__ < 503
import GlaExts
import PrelIOBase
#else
import Data.Array
#endif
\end{code}
\begin{code}
#ifdef __GLASGOW_HASKELL__
data FastMutInt = FastMutInt (MutableByteArray# RealWorld)
newFastMutInt :: IO FastMutInt
newFastMutInt = IO $ \s ->
case newByteArray# size s of { (# s, arr #) ->
(# s, FastMutInt arr #) }
where I# size = SIZEOF_HSINT
readFastMutInt :: FastMutInt -> IO Int
readFastMutInt (FastMutInt arr) = IO $ \s ->
case readIntArray# arr 0# s of { (# s, i #) ->
(# s, I# i #) }
writeFastMutInt :: FastMutInt -> Int -> IO ()
writeFastMutInt (FastMutInt arr) (I# i) = IO $ \s ->
case writeIntArray# arr 0# i s of { s ->
(# s, () #) }
incFastMutInt :: FastMutInt -> IO Int -- Returns original value
incFastMutInt (FastMutInt arr) = IO $ \s ->
case readIntArray# arr 0# s of { (# s, i #) ->
case writeIntArray# arr 0# (i +# 1#) s of { s ->
(# s, I# i #) } }
incFastMutIntBy :: FastMutInt -> Int -> IO Int -- Returns original value
incFastMutIntBy (FastMutInt arr) (I# n) = IO $ \s ->
case readIntArray# arr 0# s of { (# s, i #) ->
case writeIntArray# arr 0# (i +# n) s of { s ->
(# s, I# i #) } }
\end{code}
#endif
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