Lib/python/pythreads.swg

   1 #if defined(SWIG_PYTHON_NO_THREADS)
   2 #  if defined(SWIG_PYTHON_THREADS)
   3 #    undef SWIG_PYTHON_THREADS
   4 #  endif
   5 #endif
   6 #if defined(SWIG_PYTHON_THREADS) /* Threading support is enabled */
   7 #  if !defined(SWIG_PYTHON_USE_GIL) && !defined(SWIG_PYTHON_NO_USE_GIL)
   8 #    if (PY_VERSION_HEX >= 0x02030000) /* For 2.3 or later, use the PyGILState calls */
   9 #      define SWIG_PYTHON_USE_GIL
  10 #    endif
  11 #  endif
  12 #  if defined(SWIG_PYTHON_USE_GIL) /* Use PyGILState threads calls */
  13 #    ifndef SWIG_PYTHON_INITIALIZE_THREADS
  14 #     define SWIG_PYTHON_INITIALIZE_THREADS  PyEval_InitThreads()
  15 #    endif
  16 #    ifdef __cplusplus /* C++ code */
  17        class SWIG_Python_Thread_Block {
  18          bool status;
  19          PyGILState_STATE state;
  20        public:
  21          void end() { if (status) { PyGILState_Release(state); status = false;} }
  22          SWIG_Python_Thread_Block() : status(true), state(PyGILState_Ensure()) {}
  23          ~SWIG_Python_Thread_Block() { end(); }
  24        };
  25        class SWIG_Python_Thread_Allow {
  26          bool status;
  27          PyThreadState *save;
  28        public:
  29          void end() { if (status) { PyEval_RestoreThread(save); status = false; }}
  30          SWIG_Python_Thread_Allow() : status(true), save(PyEval_SaveThread()) {}
  31          ~SWIG_Python_Thread_Allow() { end(); }
  32        };
  33 #      define SWIG_PYTHON_THREAD_BEGIN_BLOCK   SWIG_Python_Thread_Block _swig_thread_block
  34 #      define SWIG_PYTHON_THREAD_END_BLOCK     _swig_thread_block.end()
  35 #      define SWIG_PYTHON_THREAD_BEGIN_ALLOW   SWIG_Python_Thread_Allow _swig_thread_allow
  36 #      define SWIG_PYTHON_THREAD_END_ALLOW     _swig_thread_allow.end()
  37 #    else /* C code */
  38 #      define SWIG_PYTHON_THREAD_BEGIN_BLOCK   PyGILState_STATE _swig_thread_block = PyGILState_Ensure()
  39 #      define SWIG_PYTHON_THREAD_END_BLOCK     PyGILState_Release(_swig_thread_block)
  40 #      define SWIG_PYTHON_THREAD_BEGIN_ALLOW   PyThreadState *_swig_thread_allow = PyEval_SaveThread()
  41 #      define SWIG_PYTHON_THREAD_END_ALLOW     PyEval_RestoreThread(_swig_thread_allow)
  42 #    endif
  43 #  else /* Old thread way, not implemented, user must provide it */
  44 #    if !defined(SWIG_PYTHON_INITIALIZE_THREADS)
  45 #      define SWIG_PYTHON_INITIALIZE_THREADS
  46 #    endif
  47 #    if !defined(SWIG_PYTHON_THREAD_BEGIN_BLOCK)
  48 #      define SWIG_PYTHON_THREAD_BEGIN_BLOCK
  49 #    endif
  50 #    if !defined(SWIG_PYTHON_THREAD_END_BLOCK)
  51 #      define SWIG_PYTHON_THREAD_END_BLOCK
  52 #    endif
  53 #    if !defined(SWIG_PYTHON_THREAD_BEGIN_ALLOW)
  54 #      define SWIG_PYTHON_THREAD_BEGIN_ALLOW
  55 #    endif
  56 #    if !defined(SWIG_PYTHON_THREAD_END_ALLOW)
  57 #      define SWIG_PYTHON_THREAD_END_ALLOW
  58 #    endif
  59 #  endif
  60 #else /* No thread support */
  61 #  define SWIG_PYTHON_INITIALIZE_THREADS
  62 #  define SWIG_PYTHON_THREAD_BEGIN_BLOCK
  63 #  define SWIG_PYTHON_THREAD_END_BLOCK
  64 #  define SWIG_PYTHON_THREAD_BEGIN_ALLOW
  65 #  define SWIG_PYTHON_THREAD_END_ALLOW
  66 #endif