timeout a process

[iapain]

Hello,
I am trying to build and infinite loop handler in python 2.4 on windows
platform. The problem is that i want to create a process and forcely
kill/timeout after 2 sec to handle infinite loop in a gcc complied exe
on cygwin. something like below

os.system("mycp p.exe") # this exe is compiled with g++ and having an
infinite loop

I wish to terminate this after 2 sec. I've tried Watchdog and deamon
thread.. but nothing seem to work here.

[Tim Golden]

Re: timeout a process

iapain wrote:[color=blue]
> Hello,
> I am trying to build and infinite loop handler in python 2.4 on windows
> platform. The problem is that i want to create a process and forcely
> kill/timeout after 2 sec to handle infinite loop in a gcc complied exe
> on cygwin. something like below
>
> os.system("mycp p.exe") # this exe is compiled with g++ and having an
> infinite loop
>
> I wish to terminate this after 2 sec. I've tried Watchdog and deamon
> thread.. but nothing seem to work here.[/color]

I'm not 100% sure, but I think that the following approach will work:

Use the win32process and win32event modules from the pywin32
extensions.
Use CreateProcess to run your .exe
Use WaitForSingleOb ject with the process handle and a timeout
Use TerminateProces s to kill your exe

Something like this (tested only casually):

<code>
import win32process
import win32event

TIMEOUT_SECS = 2

#
# Do as little as possible to get a
# process up and running.
#
hProcess, hThread, pid, tid = \
win32process.Cr eateProcess (
None,
"c:/winnt/system32/notepad.exe",
None, None, 0, 0, None, None,
win32process.ST ARTUPINFO ()
)
#
# Wait for it to finish, but give up after n secs
#
result = win32event.Wait ForSingleObject (
hProcess,
1000 * TIMEOUT_SECS
)
#
# If it's timed out, kill it
#
if result == win32event.WAIT _TIMEOUT:
win32process.Te rminateProcess (hProcess, -1)
print "Killed off"
else:
print "Died naturally"

</code>

HTH
Tim

[iapain]

Re: timeout a process

Thanks Tim, Yeah win32api is working normally.