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- #!/usr/bin/env python
- #
- # Copyright 2011 Facebook
- #
- # 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.
- """Implementation of platform-specific functionality.
- For each function or class described in `tornado.platform.interface`,
- the appropriate platform-specific implementation exists in this module.
- Most code that needs access to this functionality should do e.g.::
- from tornado.platform.auto import set_close_exec
- """
- from __future__ import absolute_import, division, print_function, with_statement
- import os
- if os.name == 'nt':
- from .common import Waker
- from .windows import set_close_exec
- else:
- from .posix import set_close_exec, Waker
- try:
- # monotime monkey-patches the time module to have a monotonic function
- # in versions of python before 3.3.
- import monotime
- except ImportError:
- pass
- try:
- from time import monotonic as monotonic_time
- except ImportError:
- monotonic_time = None
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