Python arm_alarm Examples

Example #1

File: debug.py Project: jarieb/celery

def blockdetection(timeout):
    if not timeout:
        yield
    else:
        old_handler = signals['ALRM']
        old_handler = None if old_handler == _on_blocking else old_handler

        signals['ALRM'] = _on_blocking

        try:
            yield signals.arm_alarm(timeout)
        finally:
            if old_handler:
                signals['ALRM'] = old_handler
            signals.reset_alarm()

Example #2

File: debug.py Project: Changgyujin/celery

def blockdetection(timeout):
    """A timeout context using ``SIGALRM`` that can be used to detect blocking
    functions."""
    if not timeout:
        yield
    else:
        old_handler = signals['ALRM']
        old_handler = None if old_handler == _on_blocking else old_handler

        signals['ALRM'] = _on_blocking

        try:
            yield signals.arm_alarm(timeout)
        finally:
            if old_handler:
                signals['ALRM'] = old_handler
            signals.reset_alarm()

Example #3

File: debug.py Project: AlerzDev/Brazo-Proyecto-Final

def blockdetection(timeout):
    """Context that raises an exception if process is blocking.

    Uses ``SIGALRM`` to detect blocking functions.
    """
    if not timeout:
        yield
    else:
        old_handler = signals['ALRM']
        old_handler = None if old_handler == _on_blocking else old_handler

        signals['ALRM'] = _on_blocking

        try:
            yield signals.arm_alarm(timeout)
        finally:
            if old_handler:
                signals['ALRM'] = old_handler
            signals.reset_alarm()

Example #4

File: test_platforms.py Project: delantai/celery

 def test_arm_alarm(self):
     if hasattr(signal, 'setitimer'):
         with patch('signal.setitimer', create=True) as seti:
             signals.arm_alarm(30)
             self.assertTrue(seti.called)

Example #5

File: test_platforms.py Project: stjordanis/celery

 def test_arm_alarm(self):
     if hasattr(signal, 'setitimer'):
         with patch('signal.setitimer', create=True) as seti:
             signals.arm_alarm(30)
             seti.assert_called()