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The C and C++ Include Header Files

/usr/include/python3.12/internal/pycore_pythread.h


$ cat -n /usr/include/python3.12/internal/pycore_pythread.h

     1	#ifndef Py_INTERNAL_PYTHREAD_H
     2	#define Py_INTERNAL_PYTHREAD_H
     3	#ifdef __cplusplus
     4	extern "C" {
     5	#endif
     6	
     7	#ifndef Py_BUILD_CORE
     8	#  error "this header requires Py_BUILD_CORE define"
     9	#endif
    10	
    11	
    12	#ifndef _POSIX_THREADS
    13	/* This means pthreads are not implemented in libc headers, hence the macro
    14	   not present in unistd.h. But they still can be implemented as an external
    15	   library (e.g. gnu pth in pthread emulation) */
    16	# ifdef HAVE_PTHREAD_H
    17	#  include <pthread.h> /* _POSIX_THREADS */
    18	# endif
    19	# ifndef _POSIX_THREADS
    20	/* Check if we're running on HP-UX and _SC_THREADS is defined. If so, then
    21	   enough of the Posix threads package is implemented to support python
    22	   threads.
    23	
    24	   This is valid for HP-UX 11.23 running on an ia64 system. If needed, add
    25	   a check of __ia64 to verify that we're running on an ia64 system instead
    26	   of a pa-risc system.
    27	*/
    28	#  ifdef __hpux
    29	#   ifdef _SC_THREADS
    30	#    define _POSIX_THREADS
    31	#   endif
    32	#  endif
    33	# endif /* _POSIX_THREADS */
    34	#endif /* _POSIX_THREADS */
    35	
    36	#if defined(_POSIX_THREADS) || defined(HAVE_PTHREAD_STUBS)
    37	# define _USE_PTHREADS
    38	#endif
    39	
    40	#if defined(_USE_PTHREADS) && defined(HAVE_PTHREAD_CONDATTR_SETCLOCK) && defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC)
    41	// monotonic is supported statically.  It doesn't mean it works on runtime.
    42	# define CONDATTR_MONOTONIC
    43	#endif
    44	
    45	
    46	#if defined(HAVE_PTHREAD_STUBS)
    47	// pthread_key
    48	struct py_stub_tls_entry {
    49	    bool in_use;
    50	    void *value;
    51	};
    52	#endif
    53	
    54	struct _pythread_runtime_state {
    55	    int initialized;
    56	
    57	#ifdef _USE_PTHREADS
    58	    // This matches when thread_pthread.h is used.
    59	    struct {
    60	        /* NULL when pthread_condattr_setclock(CLOCK_MONOTONIC) is not supported. */
    61	        pthread_condattr_t *ptr;
    62	# ifdef CONDATTR_MONOTONIC
    63	    /* The value to which condattr_monotonic is set. */
    64	        pthread_condattr_t val;
    65	# endif
    66	    } _condattr_monotonic;
    67	
    68	#endif  // USE_PTHREADS
    69	
    70	#if defined(HAVE_PTHREAD_STUBS)
    71	    struct {
    72	        struct py_stub_tls_entry tls_entries[PTHREAD_KEYS_MAX];
    73	    } stubs;
    74	#endif
    75	};
    76	
    77	
    78	#ifdef __cplusplus
    79	}
    80	#endif
    81	#endif /* !Py_INTERNAL_PYTHREAD_H */