63 lines
2.0 KiB
Python
63 lines
2.0 KiB
Python
# osmo_ms_driver: Event loop because asyncio is not up to the job
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#
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# Copyright (C) 2018 by Holger Hans Peter Freyther
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from osmo_gsm_tester.core import log
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import os
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import selectors
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import socket
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class SimpleLoop(log.Origin):
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def __init__(self):
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super().__init__(log.C_RUN, "SimpleLoop")
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self._loop = selectors.DefaultSelector()
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self._timeout = None
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def register_fd(self, fd, event, callback):
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self._loop.register(fd, event, callback)
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def schedule_timeout(self, timeout):
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assert self._timeout == None
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self._timeout = timeout
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def create_unix_server(self, cb, path):
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sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
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if len(path.encode()) > 107:
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raise log.Error('Path for unix socket is longer than max allowed len for unix socket path (107):', path)
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# If not a special Linux namespace...
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if path[0] != '\0':
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try:
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os.unlink(path)
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except FileNotFoundError:
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pass
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# Now bind+listen+NONBLOCK
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sock.bind(path)
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sock.setblocking(False)
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self.register_fd(sock.fileno(), selectors.EVENT_READ, cb)
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return sock
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def select(self):
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events = self._loop.select(timeout=self._timeout)
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self._timeout = None
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for key, mask in events:
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key.data(key.fileobj, mask)
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