62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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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 nullptr. */
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#include <Python.h>
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#include "../BPY_extern.hh"
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BPy_ThreadStatePtr BPY_thread_save()
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{
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/* Use `_PyThreadState_UncheckedGet()` instead of `PyThreadState_Get()`, to avoid a fatal error
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* issued when a thread state is nullptr (the thread state can be nullptr when quitting Blender).
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*
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* `PyEval_SaveThread()` will release the GIL, so this thread has to have the GIL to begin with
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* or badness will ensue. */
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if (_PyThreadState_UncheckedGet() && PyGILState_Check()) {
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return (BPy_ThreadStatePtr)PyEval_SaveThread();
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}
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return nullptr;
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}
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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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void BPY_thread_backtrace_print()
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{
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PyThreadState *tstate = PyGILState_GetThisThreadState();
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if (tstate) {
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PyFrameObject *frame = PyThreadState_GetFrame(tstate);
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printf(frame ? "Python stack trace:\n" : "No Python stack trace available.\n");
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while (frame) {
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PyCodeObject *frame_co = PyFrame_GetCode(frame);
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int line = PyFrame_GetLineNumber(frame);
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const char *filename = PyUnicode_AsUTF8(frame_co->co_filename);
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const char *funcname = PyUnicode_AsUTF8(frame_co->co_name);
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printf(" %s:%d %s\n", filename, line, funcname);
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Py_DECREF(frame_co);
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PyFrameObject *frame_back = PyFrame_GetBack(frame);
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Py_DECREF(frame);
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frame = frame_back;
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}
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printf("\n");
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}
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else {
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printf("No Python thread state available.\n");
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}
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}
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