On Wed, 2009-02-11 at 01:50 +0100, Manlio Perillo wrote:
George Pollard ha scritto:
[...]
So, it seems nanosleep get interruped by a signal.
This works:
import System.Posix
main = do
putStrLn Waiting for 5 seconds.
blockSignals $ addSignal sigVTALRM emptySignalSet
I can confirm this behaviour, on:
Linux 2.6.27-11-generic #1 SMP i686 GNU/Linux
Difference in the RTS between non-working and working:
(RTS way, rts_thr)
(RTS way, rts)
- George
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The POSIX sleep function is defined as:
sleep() makes the current process sleep until seconds seconds have
elapsed or a signal arrives which is not ignored.
Sounds like a signal is arriving that is interrupting the sleep.
-Corey O'Connor
2009/2/9 John Ky newho...@gmail.com:
Hi Peter,
Not to say the issue shouldn't be tracked down, but shouldn't a more
portable function be used anyway?
untested example:
maxBoundMicroSecInSec =(maxBound `div` 10^6)
threadDelaySec :: Int - IO ()
threadDelaySec s
| s maxBoundMicroSecInSec = threadDelay (maxBoundMicroSecInSec *
10^6)
John Ky ha scritto:
Hi Haskell Cafe,
I wrote very short program to sleep for 5 seconds compiled with the
-threaded option in ghc on the Mac OS X 1.5.
I am finding that using the sleep function doesn't sleep at all, whereas
using threadDelay does:
[...]
main = do
putStrLn Waiting for
On Tue, 2009-02-10 at 09:57 -0800, Corey O'Connor wrote:
The POSIX sleep function is defined as:
sleep() makes the current process sleep until seconds seconds have
elapsed or a signal arrives which is not ignored.
Sounds like a signal is arriving that is interrupting the sleep.
-Corey
On Wed, 2009-02-11 at 00:05 +0100, Manlio Perillo wrote:
John Ky ha scritto:
Hi Haskell Cafe,
I wrote very short program to sleep for 5 seconds compiled with the
-threaded option in ghc on the Mac OS X 1.5.
I am finding that using the sleep function doesn't sleep at all, whereas
2009/2/10 George Pollard por...@porg.es:
import System.Posix
main = do
putStrLn Waiting for 5 seconds.
blockSignals $ addSignal sigVTALRM emptySignalSet
sleep 5
putStrLn Done.
Huh! Does the GHC runtime uses this signal? Perhaps for scheduling?
Cheers,
-Corey
Also attached is a diff for strace between non-threaded and threaded.
execve(./sleep, [./sleep], [/* 38 vars */]) = 0
execve(./sleep, [./sleep], [/* 38 vars */]) = 0
brk(0) = 0x83c2000 | brk(0)
= 0x8ff
Corey O'Connor ha scritto:
2009/2/10 George Pollard por...@porg.es:
import System.Posix
main = do
putStrLn Waiting for 5 seconds.
blockSignals $ addSignal sigVTALRM emptySignalSet
sleep 5
putStrLn Done.
Huh! Does the GHC runtime uses this signal? Perhaps for
George Pollard ha scritto:
[...]
So, it seems nanosleep get interruped by a signal.
This works:
import System.Posix
main = do
putStrLn Waiting for 5 seconds.
blockSignals $ addSignal sigVTALRM emptySignalSet
sleep 5
putStrLn Done.
So (see my earlier
Hi Haskell Cafe,
I wrote very short program to sleep for 5 seconds compiled with the
-threaded option in ghc on the Mac OS X 1.5.
I am finding that using the sleep function doesn't sleep at all, whereas
using threadDelay does:
main = do
putStrLn Waiting for 5 seconds.
threadDelay
Hello John,
Tuesday, February 10, 2009, 12:35:25 AM, you wrote:
I am finding that using the sleep function doesn't sleep at all, whereas
using threadDelay does:
Anybody know what's happening?
1) this depends on your sleep definition
2) read threadDelay docs
--
Best regards,
Bulat
Hi John,
Which sleep are you using? From which module? Can you show the full source
with import statements?
Cheers,
Peter
2009/2/9 John Ky newho...@gmail.com
Hi Haskell Cafe,
I wrote very short program to sleep for 5 seconds compiled with the
-threaded option in ghc on the Mac OS X 1.5.
I
Hi Peter,
Source code:
import System.IO
import System.Posix
main = do
putStrLn Waiting for 5 seconds.
sleep 5 -- doesn't sleep at all
putStrLn Done.
OS:
Mac OS X 10.5
Compile command:
ghc --threaded testsleep.hs
If I remove --threaded, then it does sleep.
Thanks,
-John
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