Method stop

gunicorn/arbiter.py:415–467

\ Stop workers :attr graceful: boolean, If True (the default) workers will be killed gracefully (ie. trying to wait for the current connection)

(self, graceful=True)

        return signals

    def stop(self, graceful=True):
        """\
        Stop workers

        :attr graceful: boolean, If True (the default) workers will be
        killed gracefully  (ie. trying to wait for the current connection)
        """
        unlink = (
            self.reexec_pid == self.master_pid == 0
            and not self.systemd
            and not self.cfg.reuse_port
        )
        sock.close_sockets(self.LISTENERS, unlink)

        self.LISTENERS = []
        sig = signal.SIGTERM
        if not graceful:
            sig = signal.SIGQUIT
        limit = time.time() + self.cfg.graceful_timeout

        # Stop dirty arbiter
        if self.dirty_arbiter_pid:
            self.kill_dirty_arbiter(sig)

        # instruct the workers to exit
        self.kill_workers(sig)
        # wait until the graceful timeout
        quick_shutdown = not graceful
        while (self.WORKERS or self.dirty_arbiter_pid) and time.time() < limit:
            # Check for SIGINT/SIGQUIT to trigger quick shutdown
            if not quick_shutdown:
                try:
                    pending_sig = self.SIG_QUEUE.get_nowait()
                    if pending_sig in (signal.SIGINT, signal.SIGQUIT):
                        self.log.info("Quick shutdown requested")
                        quick_shutdown = True
                        self.kill_workers(signal.SIGQUIT)
                        if self.dirty_arbiter_pid:
                            self.kill_dirty_arbiter(signal.SIGQUIT)
                        # Give workers a short time to exit cleanly
                        limit = time.time() + 2.0
                except Exception:
                    pass
            self.reap_workers()
            self.reap_dirty_arbiter()
            time.sleep(0.1)

        self.kill_workers(signal.SIGKILL)
        if self.dirty_arbiter_pid:
            self.kill_dirty_arbiter(signal.SIGKILL)
        # Final reap to clean up any remaining zombies
        self.reap_workers()
        self.reap_dirty_arbiter()

    def reexec(self):
        """\