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#!/usr/bin/python
import datetime
import os
import select
import subprocess
import sys
import thread
proc = None
def run_child(args, fd):
global proc
f = os.fdopen(fd, 'w')
proc = subprocess.Popen(args)
# Tell main thread to continue
f.write('a')
f.flush()
f.write(str(proc.wait()))
def main():
global proc
def usage():
sys.stderr.write('Usage: %s <max_minutes> <cmd> [<args> ..]\n' % sys.argv[0])
sys.exit(1)
if len(sys.argv) < 3:
usage()
try:
max_mins = int(sys.argv[1])
except:
usage()
max_days = max_mins / (24 * 60)
max_seconds = (max_mins % (max_days * 24 * 60) if max_days > 0 else max_mins) * 60
start = datetime.datetime.now()
(rfd, wfd) = os.pipe()
f = os.fdopen(rfd, 'r')
thread.start_new_thread(run_child, (sys.argv[2:], wfd))
# Make sure that we have a process before continuing
f.read(1)
target_timeout = 60
last_target_timeout = target_timeout
timeout = target_timeout
terminated = False
laststart = None
while True:
if target_timeout != last_target_timeout:
last_target_timeout = target_timeout
timeout = target_timeout
elif laststart is not None:
now = datetime.datetime.now()
timeout = timeout - (((now - laststart).total_seconds() - target_timeout) / 4)
laststart = datetime.datetime.now()
(r, w, x) = select.select([f], [], [], timeout)
if len(r) != 0:
sys.exit(int(f.read()))
duration = datetime.datetime.now() - start
if not terminated:
sys.stdout.write('*** KEEP ALIVE MARKER ***\n')
sys.stdout.write('Total duration: %s\n' % str(duration))
sys.stdout.flush()
if (duration.days >= max_days and duration.seconds >= max_seconds) or terminated:
if not terminated:
sys.stderr.write('Process max time exceeded, attempting to terminate\n')
sys.stderr.flush()
proc.terminate()
terminated = True
target_timeout = 15
else:
sys.stderr.write('Attempting to kill process\n')
sys.stderr.flush()
proc.kill()
if __name__ == '__main__':
main()
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