Python _winapi.CloseHandle方法代码示例

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def _unregister_wait_cb(self, fut):
        if self._event is not None:
            _winapi.CloseHandle(self._event)
            self._event = None
            self._event_fut = None

        # If the wait was cancelled, the wait may never be signalled, so
        # it's required to unregister it. Otherwise, IocpProactor.close() will
        # wait forever for an event which will never come.
        #
        # If the IocpProactor already received the event, it's safe to call
        # _unregister() because we kept a reference to the Overlapped object
        # which is used as an unique key.
        self._proactor._unregister(self._ov)
        self._proactor = None

        super()._unregister_wait_cb(fut) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def test_pipe_handle(self):
        h, _ = windows_utils.pipe(overlapped=(True, True))
        _winapi.CloseHandle(_)
        p = windows_utils.PipeHandle(h)
        self.assertEqual(p.fileno(), h)
        self.assertEqual(p.handle, h)

        # check garbage collection of p closes handle
        with warnings.catch_warnings():
            warnings.filterwarnings("ignore", "",  ResourceWarning)
            del p
            support.gc_collect()
        try:
            _winapi.CloseHandle(h)
        except OSError as e:
            self.assertEqual(e.winerror, 6)     # ERROR_INVALID_HANDLE
        else:
            raise RuntimeError('expected ERROR_INVALID_HANDLE') 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def _unregister_wait_cb(self, fut):
        if self._event is not None:
            _winapi.CloseHandle(self._event)
            self._event = None
            self._event_fut = None

        # If the wait was cancelled, the wait may never be signalled, so
        # it's required to unregister it. Otherwise, IocpProactor.close() will
        # wait forever for an event which will never come.
        #
        # If the IocpProactor already received the event, it's safe to call
        # _unregister() because we kept a reference to the Overlapped object
        # which is used as a unique key.
        self._proactor._unregister(self._ov)
        self._proactor = None

        super()._unregister_wait_cb(fut) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def accept(self):
            self._handle_queue.append(self._new_handle())
            handle = self._handle_queue.pop(0)
            try:
                ov = _winapi.ConnectNamedPipe(handle, overlapped=True)
            except OSError as e:
                if e.winerror != _winapi.ERROR_NO_DATA:
                    raise
                # ERROR_NO_DATA can occur if a client has already connected,
                # written data and then disconnected -- see Issue 14725.
            else:
                try:
                    res = _winapi.WaitForMultipleObjects(
                        [ov.event], False, INFINITE)
                except:
                    ov.cancel()
                    _winapi.CloseHandle(handle)
                    raise
                finally:
                    _, err = ov.GetOverlappedResult(True)
                    assert err == 0
            return PipeConnection(handle) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def test_wait_for_handle_cancel(self):
        event = _overlapped.CreateEvent(None, True, False, None)
        self.addCleanup(_winapi.CloseHandle, event)

        # Wait for unset event with a cancelled future;
        # CancelledError should be raised immediately
        fut = self.loop._proactor.wait_for_handle(event, 10)
        fut.cancel()
        start = self.loop.time()
        with self.assertRaises(asyncio.CancelledError):
            self.loop.run_until_complete(fut)
        elapsed = self.loop.time() - start
        self.assertTrue(0 <= elapsed < 0.1, elapsed)

        # Tulip issue #195: cancelling a _WaitHandleFuture twice must not crash
        fut = self.loop._proactor.wait_for_handle(event)
        fut.cancel()
        fut.cancel() 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def Close(self, CloseHandle=_winapi.CloseHandle):
            if not self.closed:
                self.closed = True
                CloseHandle(self) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def _poll(self, timeout=None):
        """Override in order to handle events in a threadsafe manner."""
        if timeout is None:
            ms = UINT32_MAX  # wait for eternity
        elif timeout < 0:
            raise ValueError("negative timeout")
        else:
            # GetQueuedCompletionStatus() has a resolution of 1 millisecond,
            # round away from zero to wait *at least* timeout seconds.
            ms = math.ceil(timeout * 1e3)
            if ms >= UINT32_MAX:
                raise ValueError("timeout too big")

        with QtCore.QMutexLocker(self._lock):
            while True:
                # self._logger.debug('Polling IOCP with timeout {} ms in thread {}...'.format(
                #     ms, threading.get_ident()))
                status = _overlapped.GetQueuedCompletionStatus(self._iocp, ms)
                if status is None:
                    break

                err, transferred, key, address = status
                try:
                    f, ov, obj, callback = self._cache.pop(address)
                except KeyError:
                    # key is either zero, or it is used to return a pipe
                    # handle which should be closed to avoid a leak.
                    if key not in (0, _overlapped.INVALID_HANDLE_VALUE):
                        _winapi.CloseHandle(key)
                    ms = 0
                    continue

                if obj in self._stopped_serving:
                    f.cancel()
                # Futures might already be resolved or cancelled
                elif not f.done():
                    self.__events.append((f, callback, transferred, key, ov))

                ms = 0 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def close(self, *, CloseHandle=_winapi.CloseHandle):
        if self._handle is not None:
            CloseHandle(self._handle)
            self._handle = None 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def test_pipe_overlapped(self):
        h1, h2 = windows_utils.pipe(overlapped=(True, True))
        try:
            ov1 = _overlapped.Overlapped()
            self.assertFalse(ov1.pending)
            self.assertEqual(ov1.error, 0)

            ov1.ReadFile(h1, 100)
            self.assertTrue(ov1.pending)
            self.assertEqual(ov1.error, _winapi.ERROR_IO_PENDING)
            ERROR_IO_INCOMPLETE = 996
            try:
                ov1.getresult()
            except OSError as e:
                self.assertEqual(e.winerror, ERROR_IO_INCOMPLETE)
            else:
                raise RuntimeError('expected ERROR_IO_INCOMPLETE')

            ov2 = _overlapped.Overlapped()
            self.assertFalse(ov2.pending)
            self.assertEqual(ov2.error, 0)

            ov2.WriteFile(h2, b"hello")
            self.assertIn(ov2.error, {0, _winapi.ERROR_IO_PENDING})

            res = _winapi.WaitForMultipleObjects([ov2.event], False, 100)
            self.assertEqual(res, _winapi.WAIT_OBJECT_0)

            self.assertFalse(ov1.pending)
            self.assertEqual(ov1.error, ERROR_IO_INCOMPLETE)
            self.assertFalse(ov2.pending)
            self.assertIn(ov2.error, {0, _winapi.ERROR_IO_PENDING})
            self.assertEqual(ov1.getresult(), b"hello")
        finally:
            _winapi.CloseHandle(h1)
            _winapi.CloseHandle(h2) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def test_wait_for_handle(self):
        event = _overlapped.CreateEvent(None, True, False, None)
        self.addCleanup(_winapi.CloseHandle, event)

        # Wait for unset event with 0.5s timeout;
        # result should be False at timeout
        fut = self.loop._proactor.wait_for_handle(event, 0.5)
        start = self.loop.time()
        done = self.loop.run_until_complete(fut)
        elapsed = self.loop.time() - start

        self.assertEqual(done, False)
        self.assertFalse(fut.result())
        self.assertTrue(0.48 < elapsed < 0.9, elapsed)

        _overlapped.SetEvent(event)

        # Wait for set event;
        # result should be True immediately
        fut = self.loop._proactor.wait_for_handle(event, 10)
        start = self.loop.time()
        done = self.loop.run_until_complete(fut)
        elapsed = self.loop.time() - start

        self.assertEqual(done, True)
        self.assertTrue(fut.result())
        self.assertTrue(0 <= elapsed < 0.3, elapsed)

        # asyncio issue #195: cancelling a done _WaitHandleFuture
        # must not crash
        fut.cancel() 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def __init__(self, process_obj):
        prep_data = spawn.get_preparation_data(process_obj._name)

        # read end of pipe will be "stolen" by the child process
        # -- see spawn_main() in spawn.py.
        rhandle, whandle = _winapi.CreatePipe(None, 0)
        wfd = msvcrt.open_osfhandle(whandle, 0)
        cmd = spawn.get_command_line(parent_pid=os.getpid(),
                                     pipe_handle=rhandle)
        cmd = ' '.join('"%s"' % x for x in cmd)

        with open(wfd, 'wb', closefd=True) as to_child:
            # start process
            try:
                hp, ht, pid, tid = _winapi.CreateProcess(
                    spawn.get_executable(), cmd,
                    None, None, False, 0, None, None, None)
                _winapi.CloseHandle(ht)
            except:
                _winapi.CloseHandle(rhandle)
                raise

            # set attributes of self
            self.pid = pid
            self.returncode = None
            self._handle = hp
            self.sentinel = int(hp)
            util.Finalize(self, _winapi.CloseHandle, (self.sentinel,))

            # send information to child
            context.set_spawning_popen(self)
            try:
                reduction.dump(prep_data, to_child)
                reduction.dump(process_obj, to_child)
            finally:
                context.set_spawning_popen(None) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def steal_handle(source_pid, handle):
        '''Steal a handle from process identified by source_pid.'''
        source_process_handle = _winapi.OpenProcess(
            _winapi.PROCESS_DUP_HANDLE, False, source_pid)
        try:
            return _winapi.DuplicateHandle(
                source_process_handle, handle,
                _winapi.GetCurrentProcess(), 0, False,
                _winapi.DUPLICATE_SAME_ACCESS | _winapi.DUPLICATE_CLOSE_SOURCE)
        finally:
            _winapi.CloseHandle(source_process_handle) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def __init__(self, handle, access, pid=None):
            if pid is None:
                # We just duplicate the handle in the current process and
                # let the receiving process steal the handle.
                pid = os.getpid()
            proc = _winapi.OpenProcess(_winapi.PROCESS_DUP_HANDLE, False, pid)
            try:
                self._handle = _winapi.DuplicateHandle(
                    _winapi.GetCurrentProcess(),
                    handle, proc, access, False, 0)
            finally:
                _winapi.CloseHandle(proc)
            self._access = access
            self._pid = pid 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def detach(self):
            '''Get the handle.  This should only be called once.'''
            # retrieve handle from process which currently owns it
            if self._pid == os.getpid():
                # The handle has already been duplicated for this process.
                return self._handle
            # We must steal the handle from the process whose pid is self._pid.
            proc = _winapi.OpenProcess(_winapi.PROCESS_DUP_HANDLE, False,
                                       self._pid)
            try:
                return _winapi.DuplicateHandle(
                    proc, self._handle, _winapi.GetCurrentProcess(),
                    self._access, False, _winapi.DUPLICATE_CLOSE_SOURCE)
            finally:
                _winapi.CloseHandle(proc) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import CloseHandle [as 别名]
def _close(self, _CloseHandle=_winapi.CloseHandle):
            _CloseHandle(self._handle)