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-rw-r--r--scripts/external_libs/zmq/eventloop/minitornado/platform/posix.py70
1 files changed, 70 insertions, 0 deletions
diff --git a/scripts/external_libs/zmq/eventloop/minitornado/platform/posix.py b/scripts/external_libs/zmq/eventloop/minitornado/platform/posix.py
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index 00000000..ccffbb66
--- /dev/null
+++ b/scripts/external_libs/zmq/eventloop/minitornado/platform/posix.py
@@ -0,0 +1,70 @@
+#!/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.
+
+"""Posix implementations of platform-specific functionality."""
+
+from __future__ import absolute_import, division, print_function, with_statement
+
+import fcntl
+import os
+
+from . import 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:
+ pass
+
+ def consume(self):
+ try:
+ while True:
+ result = self.reader.read()
+ if not result:
+ break
+ except IOError:
+ pass
+
+ def close(self):
+ self.reader.close()
+ self.writer.close()