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Lib/python/pythreads.swg
68 строк
3 KB
Saikrishna Arcot
[python] Prevent a potential multithreading crash
22 окт 2022, 00:26
22 окт 2022, 00:26
cb2f730
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#if defined(SWIG_PYTHON_NO_THREADS) # if defined(SWIG_PYTHON_THREADS) # undef SWIG_PYTHON_THREADS # endif #endif #if defined(SWIG_PYTHON_THREADS) /* Threading support is enabled */ # if !defined(SWIG_PYTHON_USE_GIL) && !defined(SWIG_PYTHON_NO_USE_GIL) # define SWIG_PYTHON_USE_GIL # endif # if defined(SWIG_PYTHON_USE_GIL) /* Use PyGILState threads calls */ # if !defined(SWIG_PYTHON_INITIALIZE_THREADS) # if PY_VERSION_HEX < 0x03070000 # define SWIG_PYTHON_INITIALIZE_THREADS PyEval_InitThreads() # else # define SWIG_PYTHON_INITIALIZE_THREADS # endif # endif # ifdef __cplusplus /* C++ code */ class SWIG_Python_Thread_Block { bool status; PyGILState_STATE state; public: void end() { if (status) { PyGILState_Release(state); status = false;} } SWIG_Python_Thread_Block() : status(true), state(PyGILState_Ensure()) {} ~SWIG_Python_Thread_Block() { end(); } }; class SWIG_Python_Thread_Allow { bool status; PyThreadState *save; public: void end() { if (status) { status = false; PyEval_RestoreThread(save); }} SWIG_Python_Thread_Allow() : status(true), save(PyEval_SaveThread()) {} ~SWIG_Python_Thread_Allow() { end(); } }; # define SWIG_PYTHON_THREAD_BEGIN_BLOCK SWIG_Python_Thread_Block _swig_thread_block # define SWIG_PYTHON_THREAD_END_BLOCK _swig_thread_block.end() # define SWIG_PYTHON_THREAD_BEGIN_ALLOW SWIG_Python_Thread_Allow _swig_thread_allow # define SWIG_PYTHON_THREAD_END_ALLOW _swig_thread_allow.end() # else /* C code */ # define SWIG_PYTHON_THREAD_BEGIN_BLOCK PyGILState_STATE _swig_thread_block = PyGILState_Ensure() # define SWIG_PYTHON_THREAD_END_BLOCK PyGILState_Release(_swig_thread_block) # define SWIG_PYTHON_THREAD_BEGIN_ALLOW PyThreadState *_swig_thread_allow = PyEval_SaveThread() # define SWIG_PYTHON_THREAD_END_ALLOW PyEval_RestoreThread(_swig_thread_allow) # endif # else /* Old thread way, not implemented, user must provide it */ # if !defined(SWIG_PYTHON_INITIALIZE_THREADS) # define SWIG_PYTHON_INITIALIZE_THREADS # endif # if !defined(SWIG_PYTHON_THREAD_BEGIN_BLOCK) # define SWIG_PYTHON_THREAD_BEGIN_BLOCK # endif # if !defined(SWIG_PYTHON_THREAD_END_BLOCK) # define SWIG_PYTHON_THREAD_END_BLOCK # endif # if !defined(SWIG_PYTHON_THREAD_BEGIN_ALLOW) # define SWIG_PYTHON_THREAD_BEGIN_ALLOW # endif # if !defined(SWIG_PYTHON_THREAD_END_ALLOW) # define SWIG_PYTHON_THREAD_END_ALLOW # endif # endif #else /* No thread support */ # define SWIG_PYTHON_INITIALIZE_THREADS # define SWIG_PYTHON_THREAD_BEGIN_BLOCK # define SWIG_PYTHON_THREAD_END_BLOCK # define SWIG_PYTHON_THREAD_BEGIN_ALLOW # define SWIG_PYTHON_THREAD_END_ALLOW #endif