| # Copyright 2016 Étienne Bersac |
| # Copyright 2016 Julien Danjou |
| # Copyright 2016 Joshua Harlow |
| # Copyright 2013-2014 Ray Holder |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| import time |
| import typing |
| |
| if typing.TYPE_CHECKING: |
| import threading |
| |
| |
| def sleep(seconds: float) -> None: |
| """ |
| Sleep strategy that delays execution for a given number of seconds. |
| |
| This is the default strategy, and may be mocked out for unit testing. |
| """ |
| time.sleep(seconds) |
| |
| |
| class sleep_using_event: |
| """Sleep strategy that waits on an event to be set.""" |
| |
| def __init__(self, event: "threading.Event") -> None: |
| self.event = event |
| |
| def __call__(self, timeout: typing.Optional[float]) -> None: |
| # NOTE(harlowja): this may *not* actually wait for timeout |
| # seconds if the event is set (ie this may eject out early). |
| self.event.wait(timeout=timeout) |
