Python _winapi.WAIT_OBJECT_0属性代码示例

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [as 别名]
def _exhaustive_wait(handles, timeout):
        # Return ALL handles which are currently signalled.  (Only
        # returning the first signalled might create starvation issues.)
        L = list(handles)
        ready = []
        while L:
            res = _winapi.WaitForMultipleObjects(L, False, timeout)
            if res == WAIT_TIMEOUT:
                break
            elif WAIT_OBJECT_0 <= res < WAIT_OBJECT_0 + len(L):
                res -= WAIT_OBJECT_0
            elif WAIT_ABANDONED_0 <= res < WAIT_ABANDONED_0 + len(L):
                res -= WAIT_ABANDONED_0
            else:
                raise RuntimeError('Should not get here')
            ready.append(L[res])
            L = L[res+1:]
            timeout = 0
        return ready 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [as 别名]
def _internal_poll(self, _deadstate=None,
                _WaitForSingleObject=_winapi.WaitForSingleObject,
                _WAIT_OBJECT_0=_winapi.WAIT_OBJECT_0,
                _GetExitCodeProcess=_winapi.GetExitCodeProcess):
            """Check if child process has terminated.  Returns returncode
            attribute.

            This method is called by __del__, so it can only refer to objects
            in its local scope.

            """
            if self.returncode is None:
                if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
                    self.returncode = _GetExitCodeProcess(self._handle)
            return self.returncode 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [as 别名]
def run(self):
        """ Run the poll loop. This method never returns.
        """
        try:
            from _winapi import WAIT_OBJECT_0, INFINITE
        except ImportError:
            from _subprocess import WAIT_OBJECT_0, INFINITE

        # Build the list of handle to listen on.
        handles = []
        if self.interrupt_handle:
            handles.append(self.interrupt_handle)
        if self.parent_handle:
            handles.append(self.parent_handle)
        arch = platform.architecture()[0]
        c_int = ctypes.c_int64 if arch.startswith('64') else ctypes.c_int

        # Listen forever.
        while True:
            result = ctypes.windll.kernel32.WaitForMultipleObjects(
                len(handles),                            # nCount
                (c_int * len(handles))(*handles),        # lpHandles
                False,                                   # bWaitAll
                INFINITE)                                # dwMilliseconds

            if WAIT_OBJECT_0 <= result < len(handles):
                handle = handles[result - WAIT_OBJECT_0]

                if handle == self.interrupt_handle:
                    interrupt_main()

                elif handle == self.parent_handle:
                    os._exit(1)
            elif result < 0:
                # wait failed, just give up and stop polling.
                warn("""Parent poll failed.  If the frontend dies,
                the kernel may be left running.  Please let us know
                about your system (bitness, Python, etc.) at
                ipython-dev@scipy.org""")
                return 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [as 别名]
def _poll(self):
        # non-blocking wait: use a timeout of 0 millisecond
        return (_winapi.WaitForSingleObject(self._handle, 0) ==
                _winapi.WAIT_OBJECT_0) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [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 WAIT_OBJECT_0 [as 别名]
def wait(self, timeout=None):
        if self.returncode is None:
            if timeout is None:
                msecs = _winapi.INFINITE
            else:
                msecs = max(0, int(timeout * 1000 + 0.5))

            res = _winapi.WaitForSingleObject(int(self._handle), msecs)
            if res == _winapi.WAIT_OBJECT_0:
                code = _winapi.GetExitCodeProcess(self._handle)
                if code == TERMINATE:
                    code = -signal.SIGTERM
                self.returncode = code

        return self.returncode 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [as 别名]
def _recv_bytes(self, maxsize=None):
            if self._got_empty_message:
                self._got_empty_message = False
                return io.BytesIO()
            else:
                bsize = 128 if maxsize is None else min(maxsize, 128)
                try:
                    ov, err = _winapi.ReadFile(self._handle, bsize,
                                                overlapped=True)
                    try:
                        if err == _winapi.ERROR_IO_PENDING:
                            waitres = _winapi.WaitForMultipleObjects(
                                [ov.event], False, INFINITE)
                            assert waitres == WAIT_OBJECT_0
                    except:
                        ov.cancel()
                        raise
                    finally:
                        nread, err = ov.GetOverlappedResult(True)
                        if err == 0:
                            f = io.BytesIO()
                            f.write(ov.getbuffer())
                            return f
                        elif err == _winapi.ERROR_MORE_DATA:
                            return self._get_more_data(ov, maxsize)
                except OSError as e:
                    if e.winerror == _winapi.ERROR_BROKEN_PIPE:
                        raise EOFError
                    else:
                        raise
            raise RuntimeError("shouldn't get here; expected KeyboardInterrupt") 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [as 别名]
def _send_bytes(self, buf):
            ov, err = _winapi.WriteFile(self._handle, buf, overlapped=True)
            try:
                if err == _winapi.ERROR_IO_PENDING:
                    waitres = _winapi.WaitForMultipleObjects(
                        [ov.event], False, INFINITE)
                    assert waitres == WAIT_OBJECT_0
            except:
                ov.cancel()
                raise
            finally:
                nwritten, err = ov.GetOverlappedResult(True)
            assert err == 0
            assert nwritten == len(buf) 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import WAIT_OBJECT_0 [as 别名]
def _pid_alive(pid):
    """Check if the process with this PID is alive or not.

    Args:
        pid: The pid to check.

    Returns:
        This returns false if the process is dead. Otherwise, it returns true.
    """
    no_such_process = errno.EINVAL if sys.platform == "win32" else errno.ESRCH
    alive = True
    try:
        if sys.platform == "win32":
            SYNCHRONIZE = 0x00100000  # access mask defined in <winnt.h>
            handle = _winapi.OpenProcess(SYNCHRONIZE, False, pid)
            try:
                alive = (_winapi.WaitForSingleObject(handle, 0) !=
                         _winapi.WAIT_OBJECT_0)
            finally:
                _winapi.CloseHandle(handle)
        else:
            os.kill(pid, 0)
    except OSError as ex:
        if ex.errno != no_such_process:
            raise
        alive = False
    return alive