1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 5 * Copyright (c) 2018 The FreeBSD Foundation 6 * All rights reserved. 7 * 8 * Portions of this software were developed by Konstantin Belousov 9 * under sponsorship from the FreeBSD Foundation. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the author nor the names of any co-contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include "namespace.h" 40 #include <stdlib.h> 41 #include <string.h> 42 #include <pthread.h> 43 #include <pthread_np.h> 44 #include "un-namespace.h" 45 46 #include "thr_private.h" 47 48 __weak_reference(_pthread_set_name_np, pthread_set_name_np); 49 50 static void 51 thr_set_name_np(struct pthread *thread, const char *name) 52 { 53 54 free(thread->name); 55 thread->name = name != NULL ? strdup(name) : NULL; 56 } 57 58 /* Set the thread name for debug. */ 59 void 60 _pthread_set_name_np(pthread_t thread, const char *name) 61 { 62 struct pthread *curthread; 63 64 curthread = _get_curthread(); 65 if (curthread == thread) { 66 THR_THREAD_LOCK(curthread, thread); 67 thr_set_name(thread->tid, name); 68 thr_set_name_np(thread, name); 69 THR_THREAD_UNLOCK(curthread, thread); 70 } else { 71 if (_thr_find_thread(curthread, thread, 0) == 0) { 72 if (thread->state != PS_DEAD) { 73 thr_set_name(thread->tid, name); 74 thr_set_name_np(thread, name); 75 } 76 THR_THREAD_UNLOCK(curthread, thread); 77 } 78 } 79 } 80 81 static void 82 thr_get_name_np(struct pthread *thread, char *buf, size_t len) 83 { 84 85 if (thread->name != NULL) 86 strlcpy(buf, thread->name, len); 87 else if (len > 0) 88 buf[0] = '\0'; 89 } 90 91 __weak_reference(_pthread_get_name_np, pthread_get_name_np); 92 93 void 94 _pthread_get_name_np(pthread_t thread, char *buf, size_t len) 95 { 96 struct pthread *curthread; 97 98 curthread = _get_curthread(); 99 if (curthread == thread) { 100 THR_THREAD_LOCK(curthread, thread); 101 thr_get_name_np(thread, buf, len); 102 THR_THREAD_UNLOCK(curthread, thread); 103 } else { 104 if (_thr_find_thread(curthread, thread, 0) == 0) { 105 if (thread->state != PS_DEAD) 106 thr_get_name_np(thread, buf, len); 107 THR_THREAD_UNLOCK(curthread, thread); 108 } else if (len > 0) 109 buf[0] = '\0'; 110 } 111 } 112