Source code for dragonfly.engines.backend_natlink.timer

#
# This file is part of Dragonfly.
# (c) Copyright 2007, 2008 by Christo Butcher
# Licensed under the LGPL.
#
#   Dragonfly is free software: you can redistribute it and/or modify it
#   under the terms of the GNU Lesser General Public License as published
#   by the Free Software Foundation, either version 3 of the License, or
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#
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#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#   Lesser General Public License for more details.
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#   You should have received a copy of the GNU Lesser General Public
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#

"""
Multiplexing interface to the Natlink timer
============================================================================

"""

from dragonfly.engines.base import TimerManagerBase


#---------------------------------------------------------------------------

[docs]class NatlinkTimerManager(TimerManagerBase): """ Timer manager for the Natlink engine. This class utilises :meth:`natlink.setTimerCallback` to ensure that timer functions are called on-time regardless of Dragon's current status. Python code run outside of timer functions will be blocked when ``natlink`` functions are executing. This is a `limitation with Python threads <https://docs.python.org/3/c-api/init.html#thread-state-and-the-global-interpreter-lock>`__. :meth:`engine.connect` must be called before using timers with this manager. **Note**: long-running timers will block dragonfly from processing what was said, so be careful with how you use them! """ def __init__(self, interval, engine): """ """ TimerManagerBase.__init__(self, interval, engine) def _activate_main_callback(self, callback, sec): self.engine.natlink.setTimerCallback(callback, int(sec * 1000)) def _deactivate_main_callback(self): self.engine.natlink.setTimerCallback(None, 0)