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The C and C++ Include Header Files

cat -n /usr/include/python3.14/internal/pycore_atexit.h

     1	#ifndef Py_INTERNAL_ATEXIT_H
     2	#define Py_INTERNAL_ATEXIT_H
     3	
     4	#ifdef __cplusplus
     5	extern "C" {
     6	#endif
     7	
     8	#ifndef Py_BUILD_CORE
     9	#  error "this header requires Py_BUILD_CORE define"
    10	#endif
    11	
    12	
    13	
    14	#ifdef Py_GIL_DISABLED
    15	#  define _PyAtExit_LockCallbacks(state) PyMutex_Lock(&state->ll_callbacks_lock);
    16	#  define _PyAtExit_UnlockCallbacks(state) PyMutex_Unlock(&state->ll_callbacks_lock);
    17	#else
    18	#  define _PyAtExit_LockCallbacks(state)
    19	#  define _PyAtExit_UnlockCallbacks(state)
    20	#endif
    21	
    22	// Export for '_interpchannels' shared extension
    23	PyAPI_FUNC(int) _Py_AtExit(
    24	    PyInterpreterState *interp,
    25	    atexit_datacallbackfunc func,
    26	    void *data);
    27	
    28	#ifdef __cplusplus
    29	}
    30	#endif
    31	#endif /* !Py_INTERNAL_ATEXIT_H */