62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
"""\
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@file selecthub.py
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Copyright (c) 2005-2006, Bob Ippolito
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Copyright (c) 2007, Linden Research, Inc.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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"""
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import sys
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import select
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import errno
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import time
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from eventlet.hubs import hub
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import greenlet
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class Hub(hub.BaseHub):
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def wait(self, seconds=None):
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readers = self.readers
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writers = self.writers
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excs = self.excs
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if not readers and not writers and not excs:
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if seconds:
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time.sleep(seconds)
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return
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try:
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r, w, ig = select.select(readers.keys(), writers.keys(), [], seconds)
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except select.error, e:
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if e.args[0] == errno.EINTR:
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return
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raise
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SYSTEM_EXCEPTIONS = self.SYSTEM_EXCEPTIONS
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for observed, events in ((readers, r), (writers, w)):
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#print "events", r, " ", w
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for fileno in events:
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try:
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cb = observed.get(fileno)
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#print "cb", cb, " ", observed
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if cb is not None:
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cb(fileno)
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except SYSTEM_EXCEPTIONS:
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raise
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except:
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self.squelch_exception(fileno, sys.exc_info())
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