runtime/__init__.py
author Edouard Tisserant
Tue, 09 Apr 2019 09:13:55 +0200
changeset 2582 8f0d6c5fd55f
parent 2327 569d7fbc0bd4
child 2583 e172ab28d04e
permissions -rw-r--r--
Fix deadlock when indirectly calling PLCObject's evaluator() from twisted of wx event loops. Was freezing while transfer/start/stop through Wamp. Serialize all PLCObject's call to self.PythonRuntimeCall into the same PythonThread thread.
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import absolute_import
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from __future__ import print_function
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import traceback
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import sys
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from runtime.Worker import worker
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MainWorker = worker()
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_PLCObjectSingleton = None
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def GetPLCObjectSingleton():
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    assert _PLCObjectSingleton is not None
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    return _PLCObjectSingleton
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def LogMessageAndException(msg, exp=None):
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    if exp is None:
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        exp = sys.exc_info()
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    if _PLCObjectSingleton is not None:
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        _PLCObjectSingleton.LogMessage(0, msg + '\n'.join(traceback.format_exception(*exp)))
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    print(msg)
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    traceback.print_exception(*exp)
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def CreatePLCObjectSingleton(*args, **kwargs):
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    global _PLCObjectSingleton
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    from runtime.PLCObject import PLCObject  # noqa # pylint: disable=wrong-import-position
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    _PLCObjectSingleton = PLCObject(*args, **kwargs)