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Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
__init__.py	0 B	-rw-r--r--
asyncio.py	10.49 KB	-rw-r--r--
auto.py	1.83 KB	-rw-r--r--
caresresolver.py	3 KB	-rw-r--r--
common.py	3.89 KB	-rw-r--r--
epoll.py	896 B	-rw-r--r--
interface.py	2.21 KB	-rw-r--r--
kqueue.py	3.31 KB	-rw-r--r--
posix.py	1.81 KB	-rw-r--r--
select.py	2.54 KB	-rw-r--r--
twisted.py	22.03 KB	-rw-r--r--
windows.py	707 B	-rw-r--r--

Code Editor : posix.py

#
# 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.

"""Posix implementations of platform-specific functionality."""

from __future__ import absolute_import, division, print_function

import fcntl
import os

from tornado.platform import common, interface

def set_close_exec(fd):
    flags = fcntl.fcntl(fd, fcntl.F_GETFD)
    fcntl.fcntl(fd, fcntl.F_SETFD, flags | fcntl.FD_CLOEXEC)

def _set_nonblocking(fd):
    flags = fcntl.fcntl(fd, fcntl.F_GETFL)
    fcntl.fcntl(fd, fcntl.F_SETFL, flags | os.O_NONBLOCK)

class Waker(interface.Waker):
    def __init__(self):
        r, w = os.pipe()
        _set_nonblocking(r)
        _set_nonblocking(w)
        set_close_exec(r)
        set_close_exec(w)
        self.reader = os.fdopen(r, "rb", 0)
        self.writer = os.fdopen(w, "wb", 0)

def fileno(self):
        return self.reader.fileno()

def write_fileno(self):
        return self.writer.fileno()

def wake(self):
        try:
            self.writer.write(b"x")
        except (IOError, ValueError):
            pass

def consume(self):
        try:
            while True:
                result = self.reader.read()
                if not result:
                    break
        except IOError:
            pass

def close(self):
        self.reader.close()
        common.try_close(self.writer)

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Code Editor : posix.py