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 void
45 _pthread_set_name_np(pthread_t thread, const char *name)
46 {
47 	struct pthread *curthread = tls_get_curthread();
48 
49 	if (curthread == thread) {
50 		lwp_setname(thread->tid, name);
51 	} else {
52 		if (_thr_ref_add(curthread, thread, 0) == 0) {
53 			THR_THREAD_LOCK(curthread, thread);
54 			if (thread->state != PS_DEAD)
55 				lwp_setname(thread->tid, name);
56 			THR_THREAD_UNLOCK(curthread, thread);
57 			_thr_ref_delete(curthread, thread);
58 		}
59 	}
60 }
61 
62 __strong_reference(_pthread_set_name_np, pthread_set_name_np);
63