85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
import logging
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import signal
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import thread
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import threading
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import gobject
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gobject.threads_init()
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from pykka import ActorDeadError
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from pykka.registry import ActorRegistry
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from mopidy import SettingsError
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logger = logging.getLogger('mopidy.utils.process')
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def exit_process():
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logger.debug(u'Interrupting main...')
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thread.interrupt_main()
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logger.debug(u'Interrupted main')
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def exit_handler(signum, frame):
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"""A :mod:`signal` handler which will exit the program on signal."""
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signals = dict((k, v) for v, k in signal.__dict__.iteritems()
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if v.startswith('SIG') and not v.startswith('SIG_'))
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logger.info(u'Got %s signal', signals[signum])
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exit_process()
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def stop_all_actors():
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num_actors = len(ActorRegistry.get_all())
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while num_actors:
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logger.debug(u'Seeing %d actor and %d non-actor thread(s): %s',
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num_actors, threading.active_count() - num_actors,
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', '.join([t.name for t in threading.enumerate()]))
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logger.debug(u'Stopping %d actor(s)...', num_actors)
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ActorRegistry.stop_all()
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num_actors = len(ActorRegistry.get_all())
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logger.debug(u'All actors stopped.')
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class BaseThread(threading.Thread):
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def __init__(self):
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super(BaseThread, self).__init__()
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# No thread should block process from exiting
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self.daemon = True
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def run(self):
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logger.debug(u'%s: Starting thread', self.name)
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try:
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self.run_inside_try()
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except KeyboardInterrupt:
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logger.info(u'Interrupted by user')
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except SettingsError as e:
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logger.error(e.message)
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except ImportError as e:
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logger.error(e)
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except ActorDeadError as e:
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logger.warning(e)
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except Exception as e:
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logger.exception(e)
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logger.debug(u'%s: Exiting thread', self.name)
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def run_inside_try(self):
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raise NotImplementedError
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class GObjectEventThread(BaseThread):
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"""
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A GObject event loop which is shared by all Mopidy components that uses
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libraries that need a GObject event loop, like GStreamer and D-Bus.
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Should be started by Mopidy's core and used by
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:mod:`mopidy.output.gstreamer`, :mod:`mopidy.frontend.mpris`, etc.
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"""
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def __init__(self):
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super(GObjectEventThread, self).__init__()
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self.name = u'GObjectEventThread'
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self.loop = None
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def run_inside_try(self):
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self.loop = gobject.MainLoop().run()
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def destroy(self):
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self.loop.quit()
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super(GObjectEventThread, self).destroy()
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