blob: 494841797481f019e21c326c1eea5390e1b11cd1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
module Main where
import Control.Concurrent
import System.Posix
import System.IO
import System.Exit
main =
do putStrLn "running..."
(stdinr, stdinw) <- createPipe
(stdoutr, stdoutw) <- createPipe
pid <- forkProcess $ do hw <- fdToHandle stdoutw
hr <- fdToHandle stdinr
closeFd stdinw
hGetContents hr >>= hPutStr hw
hClose hr
hClose hw
exitImmediately ExitSuccess
threadDelay 100000
closeFd stdoutw
closeFd stdinw
hr2 <- fdToHandle stdoutr
hGetContents hr2 >>= putStr
getProcessStatus True False pid >>= print
|
