2 * Copyright (c) 2001 Alexander Kabaev
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/lib/libpthread/thread/thr_rtld.c,v 1.5 2003/11/05 18:19:24 deischen Exp $
29 * $DragonFly: src/lib/libthread_xu/thread/thr_rtld.c,v 1.2 2005/03/29 19:26:20 joerg Exp $
31 #include <machine/tls.h>
36 #include "rtld_lock.h"
37 #include "thr_private.h"
39 static int _thr_rtld_clr_flag(int);
40 static void *_thr_rtld_lock_create(void);
41 static void _thr_rtld_lock_destroy(void *);
42 static void _thr_rtld_lock_release(void *);
43 static void _thr_rtld_rlock_acquire(void *);
44 static int _thr_rtld_set_flag(int);
45 static void _thr_rtld_wlock_acquire(void *);
48 _thr_rtld_lock_create(void)
50 pthread_rwlock_t prwlock
;
51 if (_pthread_rwlock_init(&prwlock
, NULL
))
57 _thr_rtld_lock_destroy(void *lock
)
59 pthread_rwlock_t prwlock
;
61 prwlock
= (pthread_rwlock_t
)lock
;
63 _pthread_rwlock_destroy(&prwlock
);
67 _thr_rtld_rlock_acquire(void *lock
)
69 pthread_rwlock_t prwlock
;
71 prwlock
= (pthread_rwlock_t
)lock
;
72 _thr_rwlock_rdlock(&prwlock
);
76 _thr_rtld_wlock_acquire(void *lock
)
78 pthread_rwlock_t prwlock
;
80 prwlock
= (pthread_rwlock_t
)lock
;
81 _thr_rwlock_wrlock(&prwlock
);
85 _thr_rtld_lock_release(void *lock
)
87 pthread_rwlock_t prwlock
;
89 prwlock
= (pthread_rwlock_t
)lock
;
90 _thr_rwlock_unlock(&prwlock
);
95 _thr_rtld_set_flag(int mask
)
97 struct pthread
*curthread
;
100 curthread
= tls_get_curthread();
101 if (curthread
!= NULL
) {
102 bits
= curthread
->rtld_bits
;
103 curthread
->rtld_bits
|= mask
;
106 PANIC("No current thread in rtld call");
113 _thr_rtld_clr_flag(int mask
)
115 struct pthread
*curthread
;
118 curthread
= tls_get_curthread();
119 if (curthread
!= NULL
) {
120 bits
= curthread
->rtld_bits
;
121 curthread
->rtld_bits
&= ~mask
;
124 PANIC("No current thread in rtld call");
132 struct RtldLockInfo li
;
134 li
.lock_create
= _thr_rtld_lock_create
;
135 li
.lock_destroy
= _thr_rtld_lock_destroy
;
136 li
.rlock_acquire
= _thr_rtld_rlock_acquire
;
137 li
.wlock_acquire
= _thr_rtld_wlock_acquire
;
138 li
.lock_release
= _thr_rtld_lock_release
;
139 li
.thread_set_flag
= _thr_rtld_set_flag
;
140 li
.thread_clr_flag
= _thr_rtld_clr_flag
;
142 _rtld_thread_init(&li
);
148 _rtld_thread_init(NULL
);