#1461: System.Process.runInteractiveProcess leaks memory
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Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: libraries/base | Version: 6.6.1
Severity: normal | Keywords:
Difficulty: Unknown | Os: Linux
Testcase: | Architecture: x86
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Hi!
I just discovered that using System.Process.runInteractiveProcess will
produce a process with steady and linear memory consumption increase over
time.
While runInteractiveCommand does use the same imported function, still it
is not affected by the problem.
The code below offer a clear demonstration. With the first main (main')
memory will stabilize (I gave the number I get on my system). With the
second one, memory consumption will keep on increasing.
All the best.
Andrea Rossato
[EMAIL PROTECTED]
{{{
module Main where
import System.Process
import System.Posix.IO
import System.IO
import Control.Concurrent
readOutput rh =
do str <- hGetLine rh
return str
runWith c f =
do (i,o,e,p) <- f c
exit <- waitForProcess p
str <- readOutput o
putStrLn str
cHandles i o e
threadDelay $ 100000 * 1
runWith c f
runRunIntProcess c =
do (inp,out,err,p) <- runInteractiveProcess c [] Nothing Nothing
return (inp,out,err,p)
runRunIntCommand c =
do (inp,out,err,p) <- runInteractiveCommand c
return (inp,out,err,p)
cHandles i o e =
do hClose i
hClose o
hClose e
-- this does not leaks
-- top output (virtual, residen and sharde memory)
--5528 3404 668 S 6.6 0.7 13:07.48 procRunInComm
main' = runWith "date" runRunIntCommand
-- This leaks
-- top output (virtual, residen and sharde memory)
--10548 8436 676 S 8.6 1.6 13:15.24 procRunInProc
main = runWith "date" runRunIntProcess
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1461>
GHC <http://www.haskell.org/ghc/>
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