diff options
Diffstat (limited to 'lib/libthr/thread/thr_info.c')
| -rw-r--r-- | lib/libthr/thread/thr_info.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_info.c b/lib/libthr/thread/thr_info.c new file mode 100644 index 000000000000..f6bf81203f9c --- /dev/null +++ b/lib/libthr/thread/thr_info.c @@ -0,0 +1,151 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> + * Copyright (c) 2018 The FreeBSD Foundation + * All rights reserved. + * + * Portions of this software were developed by Konstantin Belousov + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "namespace.h" +#include <sys/errno.h> +#include <stdlib.h> +#include <string.h> +#include <pthread.h> +#include <pthread_np.h> +#include "un-namespace.h" + +#include "thr_private.h" + +static void +thr_set_name_np(struct pthread *thread, char **tmp_name) +{ + + free(thread->name); + thread->name = *tmp_name; + *tmp_name = NULL; +} + +/* Set the thread name. */ +__weak_reference(_pthread_setname_np, pthread_setname_np); +int +_pthread_setname_np(pthread_t thread, const char *name) +{ + struct pthread *curthread; + char *tmp_name; + int res; + + if (name != NULL) { + tmp_name = strdup(name); + if (tmp_name == NULL) + return (ENOMEM); + } else { + tmp_name = NULL; + } + curthread = _get_curthread(); + if (curthread == thread) { + res = 0; + THR_THREAD_LOCK(curthread, thread); + if (thr_set_name(thread->tid, name) == -1) + res = errno; + else + thr_set_name_np(thread, &tmp_name); + THR_THREAD_UNLOCK(curthread, thread); + } else { + res = ESRCH; + if (_thr_find_thread(curthread, thread, 0) == 0) { + if (thread->state != PS_DEAD) { + if (thr_set_name(thread->tid, name) == -1) { + res = errno; + } else { + thr_set_name_np(thread, &tmp_name); + res = 0; + } + } + THR_THREAD_UNLOCK(curthread, thread); + } + } + free(tmp_name); + return (res); +} + +/* Set the thread name for debug. */ +__weak_reference(_pthread_set_name_np, pthread_set_name_np); +void +_pthread_set_name_np(pthread_t thread, const char *name) +{ + (void)_pthread_setname_np(thread, name); +} + +static void +thr_get_name_np(struct pthread *thread, char *buf, size_t len) +{ + + if (thread->name != NULL) + strlcpy(buf, thread->name, len); + else if (len > 0) + buf[0] = '\0'; +} + +__weak_reference(_thr_getname_np, pthread_getname_np); +__weak_reference(_thr_getname_np, _pthread_getname_np); +int +_thr_getname_np(pthread_t thread, char *buf, size_t len) +{ + struct pthread *curthread; + int res; + + res = 0; + curthread = _get_curthread(); + if (curthread == thread) { + THR_THREAD_LOCK(curthread, thread); + thr_get_name_np(thread, buf, len); + THR_THREAD_UNLOCK(curthread, thread); + } else { + if (_thr_find_thread(curthread, thread, 0) == 0) { + if (thread->state != PS_DEAD) + thr_get_name_np(thread, buf, len); + else + res = ESRCH; + THR_THREAD_UNLOCK(curthread, thread); + } else { + res = ESRCH; + if (len > 0) + buf[0] = '\0'; + } + } + return (res); +} + +__weak_reference(_pthread_get_name_np, pthread_get_name_np); +void +_pthread_get_name_np(pthread_t thread, char *buf, size_t len) +{ + (void)_thr_getname_np(thread, buf, len); +} |