1 /* $OpenBSD: thread_private.h,v 1.18 2006/02/22 07:16:31 otto Exp $ */ 2 3 /* PUBLIC DOMAIN: No Rights Reserved. Marco S Hyman <marc (at) snafu.org> */ 4 5 #ifndef _THREAD_PRIVATE_H_ 6 #define _THREAD_PRIVATE_H_ 7 8 #include <pthread.h> 9 10 __BEGIN_DECLS 11 12 /* 13 * This file defines the thread library interface to libc. Thread 14 * libraries must implement the functions described here for proper 15 * inter-operation with libc. libc contains weak versions of the 16 * described functions for operation in a non-threaded environment. 17 */ 18 19 /* 20 * helper macro to make unique names in the thread namespace 21 */ 22 #define __THREAD_NAME(name) __CONCAT(_thread_tagname_,name) 23 24 struct __thread_private_tag_t { 25 pthread_mutex_t _private_lock; 26 pthread_key_t _private_key; 27 }; 28 29 #define _THREAD_PRIVATE_MUTEX(name) \ 30 static struct __thread_private_tag_t __THREAD_NAME(name) = { PTHREAD_MUTEX_INITIALIZER, -1 } 31 #define _THREAD_PRIVATE_MUTEX_LOCK(name) \ 32 pthread_mutex_lock( &__THREAD_NAME(name)._private_lock ) 33 #define _THREAD_PRIVATE_MUTEX_UNLOCK(name) \ 34 pthread_mutex_unlock( &__THREAD_NAME(name)._private_lock ) 35 36 /* Note that these aren't compatible with the usual OpenBSD ones which lazy-initialize! */ 37 #define _MUTEX_LOCK(l) pthread_mutex_lock((pthread_mutex_t*) l) 38 #define _MUTEX_UNLOCK(l) pthread_mutex_unlock((pthread_mutex_t*) l) 39 40 __LIBC_HIDDEN__ void _thread_atexit_lock(void); 41 __LIBC_HIDDEN__ void _thread_atexit_unlock(void); 42 43 #define _ATEXIT_LOCK() _thread_atexit_lock() 44 #define _ATEXIT_UNLOCK() _thread_atexit_unlock() 45 46 __LIBC_HIDDEN__ void _thread_arc4_lock(void); 47 __LIBC_HIDDEN__ void _thread_arc4_unlock(void); 48 49 #define _ARC4_LOCK() _thread_arc4_lock() 50 #define _ARC4_UNLOCK() _thread_arc4_unlock() 51 #define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f)) 52 53 extern volatile sig_atomic_t _rs_forked; 54 55 __END_DECLS 56 57 #endif /* _THREAD_PRIVATE_H_ */ 58
