1 /*
2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/lib/libthr/thread/thr_info.c,v 1.10 2007/04/05 07:20:31 davidxu Exp $
30 */
31
32 #include "namespace.h"
33 #include <sys/lwp.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37 #include <pthread.h>
38 #include <pthread_np.h>
39 #include "un-namespace.h"
40
41 #include "thr_private.h"
42
43 /* Set the thread name for debug. */
44 int
_pthread_setname_np(pthread_t thread,const char * name)45 _pthread_setname_np(pthread_t thread, const char *name)
46 {
47 pthread_t curthread = tls_get_curthread();
48 int error;
49 int result;
50
51 result = 0;
52 if (curthread == thread) {
53 if (lwp_setname(thread->tid, name) == -1)
54 result = errno;
55 } else {
56 if ((error = _thr_ref_add(curthread, thread, 0)) == 0) {
57 THR_THREAD_LOCK(curthread, thread);
58 if (thread->state != PS_DEAD) {
59 if (lwp_setname(thread->tid, name) == -1)
60 result = errno;
61 }
62 THR_THREAD_UNLOCK(curthread, thread);
63 _thr_ref_delete(curthread, thread);
64 } else {
65 result = error;
66 }
67 }
68 return (result);
69 }
70
71 void
_pthread_set_name_np(pthread_t thread,const char * name)72 _pthread_set_name_np(pthread_t thread, const char *name)
73 {
74 (void)_pthread_setname_np(thread, name);
75 }
76
77 /* Set the thread name for debug. */
78 int
_pthread_getname_np(pthread_t thread,char * name,size_t len)79 _pthread_getname_np(pthread_t thread, char *name, size_t len)
80 {
81 pthread_t curthread = tls_get_curthread();
82 int error;
83 int result;
84
85 result = 0;
86 if (curthread == thread) {
87 if (lwp_getname(thread->tid, name, len) == -1)
88 result = errno;
89 } else {
90 if ((error = _thr_ref_add(curthread, thread, 0)) == 0) {
91 THR_THREAD_LOCK(curthread, thread);
92 if (thread->state != PS_DEAD) {
93 if (lwp_getname(thread->tid, name, len) == -1)
94 result = errno;
95 } else if (len) {
96 name[0] = 0;
97 }
98 THR_THREAD_UNLOCK(curthread, thread);
99 _thr_ref_delete(curthread, thread);
100 } else if (len) {
101 result = errno = EINVAL;
102 name[0] = 0;
103 } else {
104 result = error;
105 }
106 }
107 return (result);
108 }
109
110 void
_pthread_get_name_np(pthread_t thread,char * buf,size_t len)111 _pthread_get_name_np(pthread_t thread, char *buf, size_t len)
112 {
113 (void)_pthread_getname_np(thread, buf, len);
114 }
115
116 __strong_reference(_pthread_get_name_np, pthread_get_name_np);
117 __strong_reference(_pthread_getname_np, pthread_getname_np);
118 __strong_reference(_pthread_set_name_np, pthread_set_name_np);
119 __strong_reference(_pthread_setname_np, pthread_setname_np);
120