Python errno.ECHILD Examples
The following are 30
code examples of errno.ECHILD().
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Example #1
| Source File: subprocess.py From jawfish with MIT License | 7 votes |
|
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _os_error=os.error, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
try:
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except _os_error as e:
if _deadstate is not None:
self.returncode = _deadstate
elif e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
return self.returncode
Example #2
| Source File: ssh.py From ssha with MIT License | 7 votes |
|
def run(command):
child_pid = os.fork()
if child_pid == 0:
os.execlp(command[0], *command)
else:
while True:
try:
os.waitpid(child_pid, 0)
except OSError as error:
if error.errno == errno.ECHILD:
# No child processes.
# It has exited already.
break
elif error.errno == errno.EINTR:
# Interrupted system call.
# This happens when resizing the terminal.
pass
else:
# An actual error occurred.
raise
Example #3
| Source File: wsgi.py From searchlight with Apache License 2.0 | 6 votes |
|
def wait_on_children(self):
while self.running:
try:
pid, status = os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
self._remove_children(pid)
self._verify_and_respawn_children(pid, status)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
except KeyboardInterrupt:
LOG.info('Caught keyboard interrupt. Exiting.')
break
except exception.SIGHUPInterrupt:
self.reload()
continue
eventlet.greenio.shutdown_safe(self.sock)
self.sock.close()
LOG.debug('Exited')
Example #4
| Source File: subprocess.py From oss-ftp with MIT License | 6 votes |
|
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _os_error=os.error, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
try:
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except _os_error as e:
if _deadstate is not None:
self.returncode = _deadstate
if e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
return self.returncode
Example #5
| Source File: forking.py From BinderFilter with MIT License | 6 votes |
|
def poll(self, flag=os.WNOHANG):
if self.returncode is None:
while True:
try:
pid, sts = os.waitpid(self.pid, flag)
except os.error as e:
if e.errno == errno.EINTR:
continue
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
else:
break
if pid == self.pid:
if os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts)
else:
assert os.WIFEXITED(sts)
self.returncode = os.WEXITSTATUS(sts)
return self.returncode
Example #6
| Source File: forking.py From ironpython2 with Apache License 2.0 | 6 votes |
|
def poll(self, flag=os.WNOHANG):
if self.returncode is None:
while True:
try:
pid, sts = os.waitpid(self.pid, flag)
except os.error as e:
if e.errno == errno.EINTR:
continue
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
else:
break
if pid == self.pid:
if os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts)
else:
assert os.WIFEXITED(sts)
self.returncode = os.WEXITSTATUS(sts)
return self.returncode
Example #7
| Source File: subprocess.py From ironpython2 with Apache License 2.0 | 6 votes |
|
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _os_error=os.error, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
try:
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except _os_error as e:
if _deadstate is not None:
self.returncode = _deadstate
if e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
return self.returncode
Example #8
| Source File: subprocess.py From BinderFilter with MIT License | 6 votes |
|
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _os_error=os.error, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
try:
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except _os_error as e:
if _deadstate is not None:
self.returncode = _deadstate
if e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
return self.returncode
Example #9
| Source File: subprocess.py From BinderFilter with MIT License | 6 votes |
|
def wait(self):
"""Wait for child process to terminate. Returns returncode
attribute."""
while self.returncode is None:
try:
pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
except OSError as e:
if e.errno != errno.ECHILD:
raise
# This happens if SIGCLD is set to be ignored or waiting
# for child processes has otherwise been disabled for our
# process. This child is dead, we can't get the status.
pid = self.pid
sts = 0
# Check the pid and loop as waitpid has been known to return
# 0 even without WNOHANG in odd situations. issue14396.
if pid == self.pid:
self._handle_exitstatus(sts)
return self.returncode
Example #10
| Source File: subprocess.py From ironpython2 with Apache License 2.0 | 6 votes |
|
def wait(self):
"""Wait for child process to terminate. Returns returncode
attribute."""
while self.returncode is None:
try:
pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
except OSError as e:
if e.errno != errno.ECHILD:
raise
# This happens if SIGCLD is set to be ignored or waiting
# for child processes has otherwise been disabled for our
# process. This child is dead, we can't get the status.
pid = self.pid
sts = 0
# Check the pid and loop as waitpid has been known to return
# 0 even without WNOHANG in odd situations. issue14396.
if pid == self.pid:
self._handle_exitstatus(sts)
return self.returncode
Example #11
| Source File: subprocess.py From oss-ftp with MIT License | 6 votes |
|
def wait(self):
"""Wait for child process to terminate. Returns returncode
attribute."""
while self.returncode is None:
try:
pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
except OSError as e:
if e.errno != errno.ECHILD:
raise
# This happens if SIGCLD is set to be ignored or waiting
# for child processes has otherwise been disabled for our
# process. This child is dead, we can't get the status.
pid = self.pid
sts = 0
# Check the pid and loop as waitpid has been known to return
# 0 even without WNOHANG in odd situations. issue14396.
if pid == self.pid:
self._handle_exitstatus(sts)
return self.returncode
Example #12
| Source File: forking.py From oss-ftp with MIT License | 6 votes |
|
def poll(self, flag=os.WNOHANG):
if self.returncode is None:
while True:
try:
pid, sts = os.waitpid(self.pid, flag)
except os.error as e:
if e.errno == errno.EINTR:
continue
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
else:
break
if pid == self.pid:
if os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts)
else:
assert os.WIFEXITED(sts)
self.returncode = os.WEXITSTATUS(sts)
return self.returncode
Example #13
| Source File: test_process.py From Safejumper-for-Desktop with GNU General Public License v2.0 | 6 votes |
|
def test_mockErrorECHILDInReapProcess(self):
"""
Test that reapProcess doesn't log anything when waitpid raises a
C{OSError} with errno C{ECHILD}.
"""
self.mockos.child = False
cmd = b'/mock/ouch'
self.mockos.waitChild = (0, 0)
d = defer.Deferred()
p = TrivialProcessProtocol(d)
proc = reactor.spawnProcess(p, cmd, [b'ouch'], env=None,
usePTY=False)
self.assertEqual(self.mockos.actions, [("fork", False), "waitpid"])
self.mockos.raiseWaitPid = OSError()
self.mockos.raiseWaitPid.errno = errno.ECHILD
# This should not produce any errors
proc.reapProcess()
Example #14
| Source File: conftest.py From openrasp-iast with Apache License 2.0 | 6 votes |
|
def _wait_child(signum, frame):
"""
处理进程terminate信号
"""
try:
while True:
cpid, status = os.waitpid(-1, os.WNOHANG)
if cpid == 0:
break
exitcode = status >> 8
Logger().warning("Module process {} exit with exitcode {}".format(cpid, exitcode))
except OSError as e:
if e.errno == errno.ECHILD:
Logger().warning('Main process has no existing unwaited-for child processes.')
else:
Logger().error("Unknow error occurred in method _wait_child!", exc_info=e)
Example #15
| Source File: test_process.py From learn_python3_spider with MIT License | 6 votes |
|
def test_mockErrorECHILDInReapProcess(self):
"""
Test that reapProcess doesn't log anything when waitpid raises a
C{OSError} with errno C{ECHILD}.
"""
self.mockos.child = False
cmd = b'/mock/ouch'
self.mockos.waitChild = (0, 0)
d = defer.Deferred()
p = TrivialProcessProtocol(d)
proc = reactor.spawnProcess(p, cmd, [b'ouch'], env=None,
usePTY=False)
self.assertEqual(self.mockos.actions, [("fork", False), "waitpid"])
self.mockos.raiseWaitPid = OSError()
self.mockos.raiseWaitPid.errno = errno.ECHILD
# This should not produce any errors
proc.reapProcess()
Example #16
| Source File: popen_fork.py From ironpython3 with Apache License 2.0 | 6 votes |
|
def poll(self, flag=os.WNOHANG):
if self.returncode is None:
while True:
try:
pid, sts = os.waitpid(self.pid, flag)
except OSError as e:
if e.errno == errno.EINTR:
continue
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
else:
break
if pid == self.pid:
if os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts)
else:
assert os.WIFEXITED(sts)
self.returncode = os.WEXITSTATUS(sts)
return self.returncode
Example #17
| Source File: subprocess.py From service-manager with Apache License 2.0 | 6 votes |
|
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _os_error=os.error, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
try:
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except _os_error as e:
if _deadstate is not None:
self.returncode = _deadstate
if e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
return self.returncode
Example #18
| Source File: subprocess.py From service-manager with Apache License 2.0 | 6 votes |
|
def wait(self):
"""Wait for child process to terminate. Returns returncode
attribute."""
while self.returncode is None:
try:
pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
except OSError as e:
if e.errno != errno.ECHILD:
raise
# This happens if SIGCLD is set to be ignored or waiting
# for child processes has otherwise been disabled for our
# process. This child is dead, we can't get the status.
pid = self.pid
sts = 0
# Check the pid and loop as waitpid has been known to return
# 0 even without WNOHANG in odd situations. issue14396.
if pid == self.pid:
self._handle_exitstatus(sts)
return self.returncode
Example #19
| Source File: subprocess.py From Splunking-Crime with GNU Affero General Public License v3.0 | 6 votes |
|
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _os_error=os.error, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
try:
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except _os_error as e:
if _deadstate is not None:
self.returncode = _deadstate
if e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
return self.returncode
Example #20
| Source File: subprocess.py From Splunking-Crime with GNU Affero General Public License v3.0 | 6 votes |
|
def wait(self):
"""Wait for child process to terminate. Returns returncode
attribute."""
while self.returncode is None:
try:
pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
except OSError as e:
if e.errno != errno.ECHILD:
raise
# This happens if SIGCLD is set to be ignored or waiting
# for child processes has otherwise been disabled for our
# process. This child is dead, we can't get the status.
pid = self.pid
sts = 0
# Check the pid and loop as waitpid has been known to return
# 0 even without WNOHANG in odd situations. issue14396.
if pid == self.pid:
self._handle_exitstatus(sts)
return self.returncode
Example #21
| Source File: forking.py From Splunking-Crime with GNU Affero General Public License v3.0 | 6 votes |
|
def poll(self, flag=os.WNOHANG):
if self.returncode is None:
while True:
try:
pid, sts = os.waitpid(self.pid, flag)
except os.error as e:
if e.errno == errno.EINTR:
continue
# Child process not yet created. See #1731717
# e.errno == errno.ECHILD == 10
return None
else:
break
if pid == self.pid:
if os.WIFSIGNALED(sts):
self.returncode = -os.WTERMSIG(sts)
else:
assert os.WIFEXITED(sts)
self.returncode = os.WEXITSTATUS(sts)
return self.returncode
Example #22
| Source File: test_process.py From python-for-android with Apache License 2.0 | 6 votes |
|
def test_mockErrorECHILDInReapProcess(self):
"""
Test that reapProcess doesn't log anything when waitpid raises a
C{OSError} with errno C{ECHILD}.
"""
self.mockos.child = False
cmd = '/mock/ouch'
self.mockos.waitChild = (0, 0)
d = defer.Deferred()
p = TrivialProcessProtocol(d)
proc = reactor.spawnProcess(p, cmd, ['ouch'], env=None,
usePTY=False)
self.assertEquals(self.mockos.actions, [("fork", False), "waitpid"])
self.mockos.raiseWaitPid = OSError()
self.mockos.raiseWaitPid.errno = errno.ECHILD
# This should not produce any errors
proc.reapProcess()
Example #23
| Source File: process.py From BitTorrent with GNU General Public License v3.0 | 6 votes |
|
def reapProcess(self):
"""Try to reap a process (without blocking) via waitpid.
This is called when sigchild is caught or a Process object loses its
"connection" (stdout is closed) This ought to result in reaping all
zombie processes, since it will be called twice as often as it needs
to be.
(Unfortunately, this is a slightly experimental approach, since
UNIX has no way to be really sure that your process is going to
go away w/o blocking. I don't want to block.)
"""
try:
pid, status = os.waitpid(self.pid, os.WNOHANG)
except OSError, e:
if e.errno == errno.ECHILD: # no child process
pid = None
else:
raise
Example #24
| Source File: wsgi.py From senlin with Apache License 2.0 | 6 votes |
|
def wait_on_children(self):
"""Wait on children exit."""
while self.running:
try:
pid, status = os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
self._remove_children(pid)
self._verify_and_respawn_children(pid, status)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
except KeyboardInterrupt:
LOG.info('Caught keyboard interrupt. Exiting.')
os.killpg(0, signal.SIGTERM)
break
except exception.SIGHUPInterrupt:
self.reload()
continue
eventlet.greenio.shutdown_safe(self.sock)
self.sock.close()
LOG.debug('Exited')
Example #25
| Source File: router_test.py From mitogen with BSD 3-Clause "New" or "Revised" License | 6 votes |
|
def test_shutdown_wait_true(self):
l1 = self.router.local()
pid = l1.call(os.getpid)
conn = self.router.stream_by_id(l1.context_id).conn
exitted = mitogen.core.Latch()
mitogen.core.listen(conn.proc, 'exit', exitted.put)
l1.shutdown(wait=True)
exitted.get()
e = self.assertRaises(OSError,
lambda: os.waitpid(pid, 0))
self.assertEquals(e.args[0], errno.ECHILD)
e = self.assertRaises(mitogen.core.ChannelError,
lambda: l1.call(os.getpid))
self.assertEquals(e.args[0], mitogen.core.Router.no_route_msg % (
l1.context_id,
mitogen.context_id,
))
Example #26
| Source File: router_test.py From mitogen with BSD 3-Clause "New" or "Revised" License | 6 votes |
|
def test_disconnect_valid_context(self):
l1 = self.router.local()
pid = l1.call(os.getpid)
strm = self.router.stream_by_id(l1.context_id)
exitted = mitogen.core.Latch()
mitogen.core.listen(strm.conn.proc, 'exit', exitted.put)
self.router.disconnect_stream(strm)
exitted.get()
e = self.assertRaises(OSError,
lambda: os.waitpid(pid, 0))
self.assertEquals(e.args[0], errno.ECHILD)
e = self.assertRaises(mitogen.core.ChannelError,
lambda: l1.call(os.getpid))
self.assertEquals(e.args[0], mitogen.core.Router.no_route_msg % (
l1.context_id,
mitogen.context_id,
))
Example #27
| Source File: server.py From storlets with Apache License 2.0 | 6 votes |
|
def _cleanup_pids(self):
"""
Remove pids which are already terminated
"""
terminated = []
for task_id, daemon_pid in self.task_id_to_pid.items():
try:
pid, rc = os.waitpid(daemon_pid, os.WNOHANG)
if pid or rc:
terminated.append(task_id)
except OSError as err:
if err.errno == errno.ESRCH:
terminated.append(task_id)
if err.errno == errno.ECHILD:
# TODO(takashi): Can we skip checking the remaining ones?
terminated.append(task_id)
else:
self.logger.exception('Failed to get the status of '
'the subprocess with pid %d' %
daemon_pid)
for task_id in terminated:
self.task_id_to_pid.pop(task_id)
Example #28
| Source File: subprocess.py From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 | 5 votes |
|
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
if not self._waitpid_lock.acquire(False):
# Something else is busy calling waitpid. Don't allow two
# at once. We know nothing yet.
return None
try:
if self.returncode is not None:
return self.returncode # Another thread waited.
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except OSError as e:
if _deadstate is not None:
self.returncode = _deadstate
elif e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
finally:
self._waitpid_lock.release()
return self.returncode
Example #29
| Source File: arbiter.py From jbox with MIT License | 5 votes |
|
def reap_workers(self):
"""\
Reap workers to avoid zombie processes
"""
try:
while True:
wpid, status = os.waitpid(-1, os.WNOHANG)
if not wpid:
break
if self.reexec_pid == wpid:
self.reexec_pid = 0
else:
# A worker said it cannot boot. We'll shutdown
# to avoid infinite start/stop cycles.
exitcode = status >> 8
if exitcode == self.WORKER_BOOT_ERROR:
reason = "Worker failed to boot."
raise HaltServer(reason, self.WORKER_BOOT_ERROR)
if exitcode == self.APP_LOAD_ERROR:
reason = "App failed to load."
raise HaltServer(reason, self.APP_LOAD_ERROR)
worker = self.WORKERS.pop(wpid, None)
if not worker:
continue
worker.tmp.close()
except OSError as e:
if e.errno != errno.ECHILD:
raise
Example #30
| Source File: subprocess.py From meddle with MIT License | 5 votes |
|
def wait(self):
"""Wait for child process to terminate. Returns returncode
attribute."""
if self.returncode is None:
try:
pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
except OSError as e:
if e.errno != errno.ECHILD:
raise
# This happens if SIGCLD is set to be ignored or waiting
# for child processes has otherwise been disabled for our
# process. This child is dead, we can't get the status.
sts = 0
self._handle_exitstatus(sts)
return self.returncode
