4627d47bc8
The function retrieves the thread name previously set by pthread_set_name_np(3). The name is cached in the process memory. Requested by: Willem Jan Withagen <wjw@digiware.nl> Man page update: Yuri Pankov <yuripv@yuripv.net> Reviewed by: ian (previous version) Discussed with: arichardson, bjk (man page) Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D16702
112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
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* Copyright (c) 2018 The FreeBSD Foundation
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* All rights reserved.
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*
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* Portions of this software were developed by Konstantin Belousov
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "namespace.h"
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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#include <pthread_np.h>
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#include "un-namespace.h"
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#include "thr_private.h"
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__weak_reference(_pthread_set_name_np, pthread_set_name_np);
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static void
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thr_set_name_np(struct pthread *thread, const char *name)
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{
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free(thread->name);
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thread->name = strdup(name);
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}
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/* Set the thread name for debug. */
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void
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_pthread_set_name_np(pthread_t thread, const char *name)
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{
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struct pthread *curthread;
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curthread = _get_curthread();
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if (curthread == thread) {
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THR_THREAD_LOCK(curthread, thread);
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thr_set_name(thread->tid, name);
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thr_set_name_np(thread, name);
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THR_THREAD_UNLOCK(curthread, thread);
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} else {
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if (_thr_find_thread(curthread, thread, 0) == 0) {
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if (thread->state != PS_DEAD) {
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thr_set_name(thread->tid, name);
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thr_set_name_np(thread, name);
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}
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THR_THREAD_UNLOCK(curthread, thread);
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}
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}
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}
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static void
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thr_get_name_np(struct pthread *thread, char *buf, size_t len)
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{
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if (thread->name != NULL)
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strlcpy(buf, thread->name, len);
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else if (len > 0)
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buf[0] = '\0';
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}
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__weak_reference(_pthread_get_name_np, pthread_get_name_np);
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void
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_pthread_get_name_np(pthread_t thread, char *buf, size_t len)
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{
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struct pthread *curthread;
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curthread = _get_curthread();
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if (curthread == thread) {
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THR_THREAD_LOCK(curthread, thread);
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thr_get_name_np(thread, buf, len);
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THR_THREAD_UNLOCK(curthread, thread);
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} else {
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if (_thr_find_thread(curthread, thread, 0) == 0) {
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if (thread->state != PS_DEAD)
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thr_get_name_np(thread, buf, len);
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THR_THREAD_UNLOCK(curthread, thread);
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} else if (len > 0)
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buf[0] = '\0';
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}
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}
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