Exemplo n.º 1
0
    def it_kills_processes_holding_the_lock(self, tmpdir):
        lockfile = tmpdir.ensure('lock')
        lock = lockfile.open()
        process = Popen(('sleep', 'infinity'))
        lock.close()

        # assert `process` has `lock`
        assert list(fuser(lockfile.strpath)) == [process.pid]

        with mock.patch('sys.stderr', new_callable=StringIO.StringIO) as mock_stderr:
            terminate_runaway_processes(lockfile.strpath)

        assert 'WARNING: Killing these runaway ' in mock_stderr.getvalue()
        wait_for(lambda: process.poll() == -9)
Exemplo n.º 2
0
def wait4(tmpdir):
    """wait for all subprocesses to finish."""
    lock = tmpdir.join('pytest-subprocesses.lock')
    try:
        from pgctl.flock import flock
        with flock(lock.strpath):
            yield
    finally:
        from pgctl.fuser import fuser
        from pgctl.functions import ps
        fusers = True
        i = 0
        while fusers and i < 10:
            fusers = tuple(fuser(lock.strpath))
            i += 1  # we only hit this when tests are broken. pragma: no cover
        fusers = ps(fusers)
        if fusers:
            raise AssertionError("there's a subprocess that's still running:\n%s" % ps(fusers))
Exemplo n.º 3
0
def wait4(tmpdir):
    """wait for all subprocesses to finish."""
    lock = tmpdir.join('pytest-subprocesses.lock')
    try:
        from pgctl.flock import flock
        with flock(lock.strpath):
            yield
    finally:
        from pgctl.fuser import fuser
        from pgctl.functions import ps
        fusers = True
        i = 0
        while fusers and i < 10:
            fusers = tuple(fuser(lock.strpath))
            i += 1  # we only hit this when tests are broken. pragma: no cover
        fusers = ps(fusers)
        if fusers:
            raise AssertionError(
                "there's a subprocess that's still running:\n%s" % ps(fusers))
Exemplo n.º 4
0
def clean_service(service_path):
    # we use SIGTERM; SIGKILL is cheating.
    limit = 100
    while limit > 0:  # pragma: no branch: we don't expect to ever hit the limit
        assert os.path.isdir(service_path), service_path
        try:
            show_runaway_processes(service_path)
            print('lock released -- done.')
            break
        except LockHeld:
            print('lock held -- killing!')
            for pid in fuser(service_path):
                try:
                    os.system('ps -fj %i' % pid)
                    os.kill(pid, signal.SIGTERM)
                except OSError as error:  # race condition -- process stopped between list and kill :pragma: no-cover
                    if error.errno == 3:  # no such process
                        pass
                    else:
                        raise
        limit -= 1
Exemplo n.º 5
0
def clean_service(service_path):
    # we use SIGTERM; SIGKILL is cheating.
    limit = 100
    while limit > 0:  # pragma: no branch: we don't expect to ever hit the limit
        assert os.path.isdir(service_path), service_path
        try:
            show_runaway_processes(service_path)
            print('lock released -- done.')
            break
        except LockHeld:
            print('lock held -- killing!')
            for pid in fuser(service_path):
                try:
                    os.system('ps -fj %i' % pid)
                    os.kill(pid, signal.SIGTERM)
                except OSError as error:  # race condition -- process stopped between list and kill :pragma: no-cover
                    if error.errno == 3:  # no such process
                        pass
                    else:
                        raise
        limit -= 1