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 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 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 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 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