1 #ifndef Py_CPYTHON_PYTHREAD_H
2 #  error "this header file must not be included directly"
3 #endif
4 
5 #define PYTHREAD_INVALID_THREAD_ID ((unsigned long)-1)
6 
7 #ifdef HAVE_FORK
8 /* Private function to reinitialize a lock at fork in the child process.
9    Reset the lock to the unlocked state.
10    Return 0 on success, return -1 on error. */
11 PyAPI_FUNC(int) _PyThread_at_fork_reinit(PyThread_type_lock *lock);
12 #endif  /* HAVE_FORK */
13 
14 #ifdef HAVE_PTHREAD_H
15     /* Darwin needs pthread.h to know type name the pthread_key_t. */
16 #   include <pthread.h>
17 #   define NATIVE_TSS_KEY_T     pthread_key_t
18 #elif defined(NT_THREADS)
19     /* In Windows, native TSS key type is DWORD,
20        but hardcode the unsigned long to avoid errors for include directive.
21     */
22 #   define NATIVE_TSS_KEY_T     unsigned long
23 #elif defined(HAVE_PTHREAD_STUBS)
24 #   include "cpython/pthread_stubs.h"
25 #   define NATIVE_TSS_KEY_T     pthread_key_t
26 #else
27 #   error "Require native threads. See https://bugs.python.org/issue31370"
28 #endif
29 
30 /* When Py_LIMITED_API is not defined, the type layout of Py_tss_t is
31    exposed to allow static allocation in the API clients.  Even in this case,
32    you must handle TSS keys through API functions due to compatibility.
33 */
34 struct _Py_tss_t {
35     int _is_initialized;
36     NATIVE_TSS_KEY_T _key;
37 };
38 
39 #undef NATIVE_TSS_KEY_T
40 
41 /* When static allocation, you must initialize with Py_tss_NEEDS_INIT. */
42 #define Py_tss_NEEDS_INIT   {0}
43