def kill( pid, signal = 15, timeout = 0 ): '''kills the process specified by pid that may be a process id or a Child object. The process is killed with the provided signal (by default 15). If the process is not dead after <timeout> seconds the function exist anyway''' # a dispatcher function required to activate the minimal timeout def fake_dispatcher(): return True notifier.dispatcher_add( fake_dispatcher ) if isinstance( pid, Child ): if pid.pid: pid = pid.pid else: return pid.exitcode os.kill( pid, signal ) countdown = CountDown( timeout ) while countdown(): dead_pid, sts = os.waitpid( pid, os.WNOHANG ) if dead_pid == pid: break notifier.step() else: # remove dispatcher function notifier.dispatcher_remove( fake_dispatcher ) return None # remove dispatcher function notifier.dispatcher_remove( fake_dispatcher ) if os.WIFSIGNALED( sts ): return -os.WTERMSIG( sts ) return os.WEXITSTATUS( sts )
def runit():
global proc
print "runit ...",
proc = notifier.popen.Process("/bin/sleep 5")
proc = notifier.popen.Process("/bin/ls -ltr")
proc.signal_connect("stdout", stdout)
proc.signal_connect("stderr", stderr)
proc.signal_connect("killed", died)
proc.start()
while True:
if proc.is_alive():
notifier.step()
else:
break
def runit(): global proc print 'runit ...', proc = notifier.popen.Process( '/bin/sleep 5' ) proc = notifier.popen.Process( '/bin/ls -ltr' ) proc.signal_connect( 'stdout', stdout ) proc.signal_connect( 'stderr', stderr ) proc.signal_connect( 'killed', died ) proc.start() while True: if proc.is_alive(): notifier.step() else: break
def run(command, timeout=0, stdout=True, stderr=True, shell=True):
'''Runs a child process with the <command> and waits <timeout>
seconds for its termination. If <stdout> is True the standard output
is written to a temporary file. The same can be done for the standard
error output with the argument <stderr>. If <shell> is True the
command is passed to a shell. The return value is a Child
object. The member variable <pid> is set if the process is still
running after <timeout> seconds otherwise <exitcode> is set.'''
# a dispatcher function required to activate the minimal timeout
def fake_dispatcher():
return True
notifier.dispatcher_add(fake_dispatcher)
countdown = CountDown(timeout)
out = err = None
if stdout:
out = tempfile.NamedTemporaryFile()
if stderr:
err = tempfile.NamedTemporaryFile()
if isinstance(command, basestring):
command = shlex.split(command)
child = subprocess.Popen(command, shell=shell, stdout=out, stderr=err)
while countdown():
exitcode = child.poll()
if exitcode != None:
break
notifier.step()
# remove dispatcher function
notifier.dispatcher_remove(fake_dispatcher)
# prepare return code
ret = Child(stdout=out, stderr=err)
if child.returncode == None:
ret.pid = child.pid
else:
# move to beginning of files
if out:
out.seek(0)
if err:
err.seek(0)
ret.exitcode = child.returncode
return ret
def run( command, timeout = 0, stdout = True, stderr = True, shell = True ): '''Runs a child process with the <command> and waits <timeout> seconds for its termination. If <stdout> is True the standard output is written to a temporary file. The same can be done for the standard error output with the argument <stderr>. If <shell> is True the command is passed to a shell. The return value is a Child object. The member variable <pid> is set if the process is still running after <timeout> seconds otherwise <exitcode> is set.''' # a dispatcher function required to activate the minimal timeout def fake_dispatcher(): return True notifier.dispatcher_add( fake_dispatcher ) countdown = CountDown( timeout ) out = err = None if stdout: out = tempfile.NamedTemporaryFile() if stderr: err = tempfile.NamedTemporaryFile() if isinstance( command, basestring ): command = shlex.split( command ) child = subprocess.Popen( command, shell = shell, stdout = out, stderr = err ) while countdown(): exitcode = child.poll() if exitcode != None: break notifier.step() # remove dispatcher function notifier.dispatcher_remove( fake_dispatcher ) # prepare return code ret = Child( stdout = out, stderr = err ) if child.returncode == None: ret.pid = child.pid else: # move to beginning of files if out: out.seek( 0 ) if err: err.seek( 0 ) ret.exitcode = child.returncode return ret
def kill(pid, signal=15, timeout=0):
'''kills the process specified by pid that may be a process id or a
Child object. The process is killed with the provided signal (by
default 15). If the process is not dead after <timeout> seconds the
function exist anyway'''
# a dispatcher function required to activate the minimal timeout
def fake_dispatcher():
return True
notifier.dispatcher_add(fake_dispatcher)
if isinstance(pid, Child):
if pid.pid:
pid = pid.pid
else:
return pid.exitcode
os.kill(pid, signal)
countdown = CountDown(timeout)
while countdown():
dead_pid, sts = os.waitpid(pid, os.WNOHANG)
if dead_pid == pid:
break
notifier.step()
else:
# remove dispatcher function
notifier.dispatcher_remove(fake_dispatcher)
return None
# remove dispatcher function
notifier.dispatcher_remove(fake_dispatcher)
if os.WIFSIGNALED(sts):
return -os.WTERMSIG(sts)
return os.WEXITSTATUS(sts)