lib/libthread_xu/thread/thr_info.c

   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);