Python _winapi.INFINITE属性代码示例

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import INFINITE [as 别名]
def wait(self, timeout=None, endtime=None):
            """Wait for child process to terminate.  Returns returncode
            attribute."""
            if endtime is not None:
                timeout = self._remaining_time(endtime)
            if timeout is None:
                timeout_millis = _winapi.INFINITE
            else:
                timeout_millis = int(timeout * 1000)
            if self.returncode is None:
                result = _winapi.WaitForSingleObject(self._handle,
                                                    timeout_millis)
                if result == _winapi.WAIT_TIMEOUT:
                    raise TimeoutExpired(self.args, timeout)
                self.returncode = _winapi.GetExitCodeProcess(self._handle)
            return self.returncode 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import INFINITE [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 INFINITE [as 别名]
def _wait_for_handle(self, handle, timeout, _is_cancel):
        if timeout is None:
            ms = _winapi.INFINITE
        else:
            # RegisterWaitForSingleObject() has a resolution of 1 millisecond,
            # round away from zero to wait *at least* timeout seconds.
            ms = math.ceil(timeout * 1e3)

        # We only create ov so we can use ov.address as a key for the cache.
        ov = _overlapped.Overlapped(NULL)
        wait_handle = _overlapped.RegisterWaitWithQueue(
            handle, self._iocp, ov.address, ms)
        if _is_cancel:
            f = _WaitCancelFuture(ov, handle, wait_handle, loop=self._loop)
        else:
            f = _WaitHandleFuture(ov, handle, wait_handle, self,
                                  loop=self._loop)
        if f._source_traceback:
            del f._source_traceback[-1]

        def finish_wait_for_handle(trans, key, ov):
            # Note that this second wait means that we should only use
            # this with handles types where a successful wait has no
            # effect.  So events or processes are all right, but locks
            # or semaphores are not.  Also note if the handle is
            # signalled and then quickly reset, then we may return
            # False even though we have not timed out.
            return f._poll()

        self._cache[ov.address] = (f, ov, 0, finish_wait_for_handle)
        return f 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import INFINITE [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 INFINITE [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 INFINITE [as 别名]
def _wait(self, timeout):
            """Internal implementation of wait() on Windows."""
            if timeout is None:
                timeout_millis = _winapi.INFINITE
            else:
                timeout_millis = int(timeout * 1000)
            if self.returncode is None:
                # API note: Returns immediately if timeout_millis == 0.
                result = _winapi.WaitForSingleObject(self._handle,
                                                     timeout_millis)
                if result == _winapi.WAIT_TIMEOUT:
                    raise TimeoutExpired(self.args, timeout)
                self.returncode = _winapi.GetExitCodeProcess(self._handle)
            return self.returncode 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import INFINITE [as 别名]
def _wait_for_handle(self, handle, timeout, _is_cancel):
        self._check_closed()

        if timeout is None:
            ms = _winapi.INFINITE
        else:
            # RegisterWaitForSingleObject() has a resolution of 1 millisecond,
            # round away from zero to wait *at least* timeout seconds.
            ms = math.ceil(timeout * 1e3)

        # We only create ov so we can use ov.address as a key for the cache.
        ov = _overlapped.Overlapped(NULL)
        wait_handle = _overlapped.RegisterWaitWithQueue(
            handle, self._iocp, ov.address, ms)
        if _is_cancel:
            f = _WaitCancelFuture(ov, handle, wait_handle, loop=self._loop)
        else:
            f = _WaitHandleFuture(ov, handle, wait_handle, self,
                                  loop=self._loop)
        if f._source_traceback:
            del f._source_traceback[-1]

        def finish_wait_for_handle(trans, key, ov):
            # Note that this second wait means that we should only use
            # this with handles types where a successful wait has no
            # effect.  So events or processes are all right, but locks
            # or semaphores are not.  Also note if the handle is
            # signalled and then quickly reset, then we may return
            # False even though we have not timed out.
            return f._poll()

        self._cache[ov.address] = (f, ov, 0, finish_wait_for_handle)
        return f 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import INFINITE [as 别名]
def _poll(self, timeout=None):
        if timeout is None:
            ms = INFINITE
        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 >= INFINITE:
                raise ValueError("timeout too big")

        while True:
            status = _overlapped.GetQueuedCompletionStatus(self._iocp, ms)
            if status is None:
                break
            ms = 0

            err, transferred, key, address = status
            try:
                f, ov, obj, callback = self._cache.pop(address)
            except KeyError:
                if self._loop.get_debug():
                    self._loop.call_exception_handler({
                        'message': ('GetQueuedCompletionStatus() returned an '
                                    'unexpected event'),
                        'status': ('err=%s transferred=%s key=%#x address=%#x'
                                   % (err, transferred, key, address)),
                    })

                # 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)
                continue

            if obj in self._stopped_serving:
                f.cancel()
            # Don't call the callback if _register() already read the result or
            # if the overlapped has been cancelled
            elif not f.done():
                try:
                    value = callback(transferred, key, ov)
                except OSError as e:
                    f.set_exception(e)
                    self._results.append(f)
                else:
                    f.set_result(value)
                    self._results.append(f)

        # Remove unregisted futures
        for ov in self._unregistered:
            self._cache.pop(ov.address, None)
        self._unregistered.clear() 

# 需要导入模块: import _winapi [as 别名]
# 或者: from _winapi import INFINITE [as 别名]
def _poll(self, timeout=None):
        if timeout is None:
            ms = INFINITE
        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 >= INFINITE:
                raise ValueError("timeout too big")

        while True:
            status = _overlapped.GetQueuedCompletionStatus(self._iocp, ms)
            if status is None:
                break
            ms = 0

            err, transferred, key, address = status
            try:
                f, ov, obj, callback = self._cache.pop(address)
            except KeyError:
                if self._loop.get_debug():
                    self._loop.call_exception_handler({
                        'message': ('GetQueuedCompletionStatus() returned an '
                                    'unexpected event'),
                        'status': ('err=%s transferred=%s key=%#x address=%#x'
                                   % (err, transferred, key, address)),
                    })

                # 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)
                continue

            if obj in self._stopped_serving:
                f.cancel()
            # Don't call the callback if _register() already read the result or
            # if the overlapped has been cancelled
            elif not f.done():
                try:
                    value = callback(transferred, key, ov)
                except OSError as e:
                    f.set_exception(e)
                    self._results.append(f)
                else:
                    f.set_result(value)
                    self._results.append(f)

        # Remove unregistered futures
        for ov in self._unregistered:
            self._cache.pop(ov.address, None)
        self._unregistered.clear()