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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
# 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 import set_close_exec
from __future__ import absolute_import, division, print_function, with_statement
import os
if 'APPENGINE_RUNTIME' in os.environ:
from tornado.platform.common import Waker
def set_close_exec(fd):
elif == 'nt':
from tornado.platform.common import Waker
from import set_close_exec
from tornado.platform.posix import set_close_exec, Waker
# monotime monkey-patches the time module to have a monotonic function
# in versions of python before 3.3.
import monotime
# Silence pyflakes warning about this unused import
except ImportError:
from time import monotonic as monotonic_time
except ImportError:
monotonic_time = None
__all__ = ['Waker', 'set_close_exec', 'monotonic_time']
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