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("mycpp.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]

iapain wrote:

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("mycpp.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.

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 WaitForSingleObject with the process handle and a timeout
Use TerminateProcess 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.CreateProcess (
None,
"c:/winnt/system32/notepad.exe",
None, None, 0, 0, None, None,
win32process.STARTUPINFO ()
)
#
# Wait for it to finish, but give up after n secs
#
result = win32event.WaitForSingleObject (
hProcess,
1000 * TIMEOUT_SECS
)
#
# If it's timed out, kill it
#
if result == win32event.WAIT_TIMEOUT:
win32process.TerminateProcess (hProcess, -1)
print "Killed off"
else:
print "Died naturally"

</code>

HTH
Tim

[iapain]

Thanks Tim, Yeah win32api is working normally.