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 #pragma once
6 
7 #include <pthread.h>
8 
9 __BEGIN_DECLS
10 
11 /*
12  * This file defines the thread library interface to libc.  Thread
13  * libraries must implement the functions described here for proper
14  * inter-operation with libc.   libc contains weak versions of the
15  * described functions for operation in a non-threaded environment.
16  */
17 
18 #define __MUTEX_NAME(name) __CONCAT(__libc_mutex_,name)
19 #define _THREAD_PRIVATE_MUTEX(name) static pthread_mutex_t __MUTEX_NAME(name) = PTHREAD_MUTEX_INITIALIZER
20 #define _THREAD_PRIVATE_MUTEX_LOCK(name) pthread_mutex_lock(&__MUTEX_NAME(name))
21 #define _THREAD_PRIVATE_MUTEX_UNLOCK(name) pthread_mutex_unlock(&__MUTEX_NAME(name))
22 
23 /* Note that these aren't compatible with the usual OpenBSD ones which lazy-initialize! */
24 #define _MUTEX_LOCK(l) pthread_mutex_lock((pthread_mutex_t*) l)
25 #define _MUTEX_UNLOCK(l) pthread_mutex_unlock((pthread_mutex_t*) l)
26 
27 __LIBC_HIDDEN__ void    _thread_arc4_lock(void);
28 __LIBC_HIDDEN__ void    _thread_arc4_unlock(void);
29 
30 #define _ARC4_LOCK() _thread_arc4_lock()
31 #define _ARC4_UNLOCK() _thread_arc4_unlock()
32 #define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
33 
34 extern volatile sig_atomic_t _rs_forked;
35 
36 __END_DECLS
37