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