| 383 | return key |
| 384 | |
| 385 | def select(self, timeout=None): |
| 386 | # This is shared between poll() and epoll(). |
| 387 | # epoll() has a different signature and handling of timeout parameter. |
| 388 | if timeout is None: |
| 389 | timeout = None |
| 390 | elif timeout <= 0: |
| 391 | timeout = 0 |
| 392 | else: |
| 393 | # poll() has a resolution of 1 millisecond, round away from |
| 394 | # zero to wait *at least* timeout seconds. |
| 395 | timeout = math.ceil(timeout * 1e3) |
| 396 | ready = [] |
| 397 | try: |
| 398 | fd_event_list = self._selector.poll(timeout) |
| 399 | except InterruptedError: |
| 400 | return ready |
| 401 | |
| 402 | fd_to_key_get = self._fd_to_key.get |
| 403 | for fd, event in fd_event_list: |
| 404 | key = fd_to_key_get(fd) |
| 405 | if key: |
| 406 | events = ((event & ~self._EVENT_READ and EVENT_WRITE) |
| 407 | | (event & ~self._EVENT_WRITE and EVENT_READ)) |
| 408 | ready.append((key, events & key.events)) |
| 409 | return ready |
| 410 | |
| 411 | |
| 412 | if hasattr(select, 'poll'): |