Python asyncio.FastChildWatcher() Examples

The following are 17 code examples of asyncio.FastChildWatcher(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module asyncio , or try the search function .
Example #1
Source File: test_unix_events.py    From ironpython3 with Apache License 2.0 5 votes vote down vote up 
def test_get_child_watcher_after_set(self):
        policy = self.create_policy()
        watcher = asyncio.FastChildWatcher()

        policy.set_child_watcher(watcher)
        self.assertIs(policy._watcher, watcher)
        self.assertIs(watcher, policy.get_child_watcher())
Example #2
Source File: test_unix_events.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_get_child_watcher_after_set(self):
        policy = self.create_policy()
        watcher = asyncio.FastChildWatcher()

        policy.set_child_watcher(watcher)
        self.assertIs(policy._watcher, watcher)
        self.assertIs(watcher, policy.get_child_watcher())
Example #3
Source File: test_unix_events.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def create_watcher(self):
        return asyncio.FastChildWatcher()
Example #4
Source File: test_unix_events.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_close(self, m):
        # register two children
        callback1 = mock.Mock()

        with self.watcher:
            self.running = True
            # child 1 terminates
            self.add_zombie(63, 9)
            # other child terminates
            self.add_zombie(65, 18)
            self.watcher._sig_chld()

            self.watcher.add_child_handler(63, callback1)
            self.watcher.add_child_handler(64, callback1)

            self.assertEqual(len(self.watcher._callbacks), 1)
            if isinstance(self.watcher, asyncio.FastChildWatcher):
                self.assertEqual(len(self.watcher._zombies), 1)

            with mock.patch.object(
                    self.loop,
                    "remove_signal_handler") as m_remove_signal_handler:

                self.watcher.close()

                m_remove_signal_handler.assert_called_once_with(
                    signal.SIGCHLD)
                self.assertFalse(self.watcher._callbacks)
                if isinstance(self.watcher, asyncio.FastChildWatcher):
                    self.assertFalse(self.watcher._zombies)
Example #5
Source File: test_unix_events.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_sigchld_child_reaped_elsewhere(self, m):
        # register a child
        callback = mock.Mock()

        with self.watcher:
            self.running = True
            self.watcher.add_child_handler(58, callback)

        self.assertFalse(callback.called)
        self.assertFalse(m.WIFEXITED.called)
        self.assertFalse(m.WIFSIGNALED.called)
        self.assertFalse(m.WEXITSTATUS.called)
        self.assertFalse(m.WTERMSIG.called)

        # child terminates
        self.running = False
        self.add_zombie(58, 4)

        # waitpid is called elsewhere
        os.waitpid(58, os.WNOHANG)

        m.waitpid.reset_mock()

        # sigchld
        with self.ignore_warnings:
            self.watcher._sig_chld()

        if isinstance(self.watcher, asyncio.FastChildWatcher):
            # here the FastChildWatche enters a deadlock
            # (there is no way to prevent it)
            self.assertFalse(callback.called)
        else:
            callback.assert_called_once_with(58, 255)
Example #6
Source File: test_unix_events.py    From annotated-py-projects with MIT License 5 votes vote down vote up 
def test_get_child_watcher_after_set(self):
        policy = self.create_policy()
        watcher = asyncio.FastChildWatcher()

        policy.set_child_watcher(watcher)
        self.assertIs(policy._watcher, watcher)
        self.assertIs(watcher, policy.get_child_watcher())
Example #7
Source File: test_unix_events.py    From annotated-py-projects with MIT License 5 votes vote down vote up 
def create_watcher(self):
        return asyncio.FastChildWatcher()
Example #8
Source File: test_unix_events.py    From annotated-py-projects with MIT License 5 votes vote down vote up 
def test_close(self, m):
        # register two children
        callback1 = mock.Mock()

        with self.watcher:
            self.running = True
            # child 1 terminates
            self.add_zombie(63, 9)
            # other child terminates
            self.add_zombie(65, 18)
            self.watcher._sig_chld()

            self.watcher.add_child_handler(63, callback1)
            self.watcher.add_child_handler(64, callback1)

            self.assertEqual(len(self.watcher._callbacks), 1)
            if isinstance(self.watcher, asyncio.FastChildWatcher):
                self.assertEqual(len(self.watcher._zombies), 1)

            with mock.patch.object(
                    self.loop,
                    "remove_signal_handler") as m_remove_signal_handler:

                self.watcher.close()

                m_remove_signal_handler.assert_called_once_with(
                    signal.SIGCHLD)
                self.assertFalse(self.watcher._callbacks)
                if isinstance(self.watcher, asyncio.FastChildWatcher):
                    self.assertFalse(self.watcher._zombies)
Example #9
Source File: test_unix_events.py    From annotated-py-projects with MIT License 5 votes vote down vote up 
def test_sigchld_child_reaped_elsewhere(self, m):
        # register a child
        callback = mock.Mock()

        with self.watcher:
            self.running = True
            self.watcher.add_child_handler(58, callback)

        self.assertFalse(callback.called)
        self.assertFalse(m.WIFEXITED.called)
        self.assertFalse(m.WIFSIGNALED.called)
        self.assertFalse(m.WEXITSTATUS.called)
        self.assertFalse(m.WTERMSIG.called)

        # child terminates
        self.running = False
        self.add_zombie(58, 4)

        # waitpid is called elsewhere
        os.waitpid(58, os.WNOHANG)

        m.waitpid.reset_mock()

        # sigchld
        with self.ignore_warnings:
            self.watcher._sig_chld()

        if isinstance(self.watcher, asyncio.FastChildWatcher):
            # here the FastChildWatche enters a deadlock
            # (there is no way to prevent it)
            self.assertFalse(callback.called)
        else:
            callback.assert_called_once_with(58, 255)
Example #10
Source File: test_unix_events.py    From Fluid-Designer with GNU General Public License v3.0 5 votes vote down vote up 
def test_sigchld_child_reaped_elsewhere(self, m):
        # register a child
        callback = mock.Mock()

        with self.watcher:
            self.running = True
            self.watcher.add_child_handler(58, callback)

        self.assertFalse(callback.called)
        self.assertFalse(m.WIFEXITED.called)
        self.assertFalse(m.WIFSIGNALED.called)
        self.assertFalse(m.WEXITSTATUS.called)
        self.assertFalse(m.WTERMSIG.called)

        # child terminates
        self.running = False
        self.add_zombie(58, 4)

        # waitpid is called elsewhere
        os.waitpid(58, os.WNOHANG)

        m.waitpid.reset_mock()

        # sigchld
        with self.ignore_warnings:
            self.watcher._sig_chld()

        if isinstance(self.watcher, asyncio.FastChildWatcher):
            # here the FastChildWatche enters a deadlock
            # (there is no way to prevent it)
            self.assertFalse(callback.called)
        else:
            callback.assert_called_once_with(58, 255)
Example #11
Source File: test_unix_events.py    From ironpython3 with Apache License 2.0 5 votes vote down vote up 
def create_watcher(self):
        return asyncio.FastChildWatcher()
Example #12
Source File: test_unix_events.py    From ironpython3 with Apache License 2.0 5 votes vote down vote up 
def test_close(self, m):
        # register two children
        callback1 = mock.Mock()

        with self.watcher:
            self.running = True
            # child 1 terminates
            self.add_zombie(63, 9)
            # other child terminates
            self.add_zombie(65, 18)
            self.watcher._sig_chld()

            self.watcher.add_child_handler(63, callback1)
            self.watcher.add_child_handler(64, callback1)

            self.assertEqual(len(self.watcher._callbacks), 1)
            if isinstance(self.watcher, asyncio.FastChildWatcher):
                self.assertEqual(len(self.watcher._zombies), 1)

            with mock.patch.object(
                    self.loop,
                    "remove_signal_handler") as m_remove_signal_handler:

                self.watcher.close()

                m_remove_signal_handler.assert_called_once_with(
                    signal.SIGCHLD)
                self.assertFalse(self.watcher._callbacks)
                if isinstance(self.watcher, asyncio.FastChildWatcher):
                    self.assertFalse(self.watcher._zombies)
Example #13
Source File: test_unix_events.py    From ironpython3 with Apache License 2.0 5 votes vote down vote up 
def test_sigchld_child_reaped_elsewhere(self, m):
        # register a child
        callback = mock.Mock()

        with self.watcher:
            self.running = True
            self.watcher.add_child_handler(58, callback)

        self.assertFalse(callback.called)
        self.assertFalse(m.WIFEXITED.called)
        self.assertFalse(m.WIFSIGNALED.called)
        self.assertFalse(m.WEXITSTATUS.called)
        self.assertFalse(m.WTERMSIG.called)

        # child terminates
        self.running = False
        self.add_zombie(58, 4)

        # waitpid is called elsewhere
        os.waitpid(58, os.WNOHANG)

        m.waitpid.reset_mock()

        # sigchld
        with self.ignore_warnings:
            self.watcher._sig_chld()

        if isinstance(self.watcher, asyncio.FastChildWatcher):
            # here the FastChildWatche enters a deadlock
            # (there is no way to prevent it)
            self.assertFalse(callback.called)
        else:
            callback.assert_called_once_with(58, 255)
Example #14
Source File: cmd.py    From dffml with MIT License 5 votes vote down vote up 
def main(cls, loop=None, argv=sys.argv):
        """
        Runs cli commands in asyncio loop and outputs in appropriate format
        """
        if loop is None:
            loop = asyncio.get_event_loop()
            # In Python 3.8 ThreadedChildWatcher becomes the default which
            # should work fine for us. However, in Python 3.7 SafeChildWatcher
            # is the default and may cause BlockingIOErrors when many
            # subprocesses are created
            # https://docs.python.org/3/library/asyncio-policy.html#asyncio.FastChildWatcher
            if (
                sys.version_info.major == 3
                and sys.version_info.minor == 7
                and sys.platform != "win32"
            ):
                watcher = asyncio.FastChildWatcher()
                asyncio.set_child_watcher(watcher)
                watcher.attach_loop(loop)
        result = None
        try:
            result = loop.run_until_complete(cls._main(*argv[1:]))
        except KeyboardInterrupt:  # pragma: no cover
            pass  # pragma: no cover
        loop.run_until_complete(loop.shutdown_asyncgens())
        loop.close()
Example #15
Source File: test_unix_events.py    From Fluid-Designer with GNU General Public License v3.0 5 votes vote down vote up 
def test_get_child_watcher_after_set(self):
        policy = self.create_policy()
        watcher = asyncio.FastChildWatcher()

        policy.set_child_watcher(watcher)
        self.assertIs(policy._watcher, watcher)
        self.assertIs(watcher, policy.get_child_watcher())
Example #16
Source File: test_unix_events.py    From Fluid-Designer with GNU General Public License v3.0 5 votes vote down vote up 
def create_watcher(self):
        return asyncio.FastChildWatcher()
Example #17
Source File: test_unix_events.py    From Fluid-Designer with GNU General Public License v3.0 5 votes vote down vote up 
def test_close(self, m):
        # register two children
        callback1 = mock.Mock()

        with self.watcher:
            self.running = True
            # child 1 terminates
            self.add_zombie(63, 9)
            # other child terminates
            self.add_zombie(65, 18)
            self.watcher._sig_chld()

            self.watcher.add_child_handler(63, callback1)
            self.watcher.add_child_handler(64, callback1)

            self.assertEqual(len(self.watcher._callbacks), 1)
            if isinstance(self.watcher, asyncio.FastChildWatcher):
                self.assertEqual(len(self.watcher._zombies), 1)

            with mock.patch.object(
                    self.loop,
                    "remove_signal_handler") as m_remove_signal_handler:

                self.watcher.close()

                m_remove_signal_handler.assert_called_once_with(
                    signal.SIGCHLD)
                self.assertFalse(self.watcher._callbacks)
                if isinstance(self.watcher, asyncio.FastChildWatcher):
                    self.assertFalse(self.watcher._zombies)