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gh-79315: Add Include/cpython/pythread.h header (#91798)

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Victor Stinner 2022-04-21 23:00:42 +02:00 • committed by GitHub
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commit 8a4e519e78
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5 changed files with 50 additions and 44 deletions
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39
Include/cpython/pythread.h Normal file
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#ifndef Py_CPYTHON_PYTHREAD_H
# error "this header file must not be included directly"
#endif
#define PYTHREAD_INVALID_THREAD_ID ((unsigned long)-1)
#ifdef HAVE_FORK
/* Private function to reinitialize a lock at fork in the child process.
Reset the lock to the unlocked state.
Return 0 on success, return -1 on error. */
PyAPI_FUNC(int) _PyThread_at_fork_reinit(PyThread_type_lock *lock);
#endif /* HAVE_FORK */
#ifdef HAVE_PTHREAD_H
/* Darwin needs pthread.h to know type name the pthread_key_t. */
# include <pthread.h>
# define NATIVE_TSS_KEY_T pthread_key_t
#elif defined(NT_THREADS)
/* In Windows, native TSS key type is DWORD,
but hardcode the unsigned long to avoid errors for include directive.
*/
# define NATIVE_TSS_KEY_T unsigned long
#else
# error "Require native threads. See https://bugs.python.org/issue31370"
#endif
/* When Py_LIMITED_API is not defined, the type layout of Py_tss_t is
exposed to allow static allocation in the API clients. Even in this case,
you must handle TSS keys through API functions due to compatibility.
*/
struct _Py_tss_t {
int _is_initialized;
NATIVE_TSS_KEY_T _key;
};
#undef NATIVE_TSS_KEY_T
/* When static allocation, you must initialize with Py_tss_NEEDS_INIT. */
#define Py_tss_NEEDS_INIT {0}