Sybren A. Stüvel
fe4286435c
Evaluating the dependency graph potentially executes Python code when evaluating drivers. In specific situations (see T91046) this could deadlock Blender entirely. Temporarily releasing the GIL when evaluating the depsgraph resolves this. This is an improved version of rBfc460351170478e712740ae1917a2e24803eba3b, thanks @brecht for the diff! Manifest task: T91046
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the 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, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup pygen
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*
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* This file contains wrapper functions related to global interpreter lock.
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* these functions are slightly different from the original Python API,
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* don't throw SIGABRT even if the thread state is NULL. */
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#include <Python.h>
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#include "../BPY_extern.h"
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#include "BLI_utildefines.h"
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/* analogue of PyEval_SaveThread() */
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BPy_ThreadStatePtr BPY_thread_save(void)
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{
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/* Don't use `PyThreadState_Get()`, to avoid a fatal error issued when a thread state is NULL
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* (the thread state can be NULL when quitting Blender). */
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if (PyGILState_Check()) {
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return (BPy_ThreadStatePtr)PyEval_SaveThread();
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}
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return NULL;
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}
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/* analogue of PyEval_RestoreThread() */
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void BPY_thread_restore(BPy_ThreadStatePtr tstate)
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{
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if (tstate) {
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PyEval_RestoreThread((PyThreadState *)tstate);
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}
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}
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