thread_private.h revision 38778e3b6c89689bbdd01f4a52ac88f02bf59783 
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@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
24struct __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
52__END_DECLS
53
54#endif /* _THREAD_PRIVATE_H_ */
55