2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by John Birrell.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $FreeBSD: src/lib/libpthread/thread/thr_info.c,v 1.27 2003/09/22 00:40:23 davidxu Exp $
33 * $DragonFly: src/lib/libthread_xu/thread/thr_info.c,v 1.3 2006/04/05 00:24:36 davidxu Exp $
36 #include <machine/tls.h>
45 #include "thr_private.h"
48 #define NELEMENTS(arr) (sizeof(arr) / sizeof(arr[0]))
51 static void dump_thread(int fd, pthread_t pthread, int long_version);
53 struct s_thread_info {
54 enum pthread_state state;
58 /* Static variables: */
59 static const struct s_thread_info thread_info[] = {
60 {PS_RUNNING , "Running"},
61 {PS_MUTEX_WAIT , "Waiting on a mutex"},
62 {PS_JOIN , "Waiting to join"},
63 {PS_SUSPENDED , "Suspended"},
65 {PS_DEADLOCK , "Deadlocked"},
66 {PS_STATE_MAX , "Not a real state!"}
70 _thread_dump_info(void)
72 char s[512], tmpfile[128];
76 for (i = 0; i < 100000; i++) {
77 snprintf(tmpfile, sizeof(tmpfile), "/tmp/pthread.dump.%u.%i",
79 /* Open the dump file for append and create it if necessary: */
80 if ((fd = __sys_open(tmpfile, O_RDWR | O_CREAT | O_EXCL,
82 /* Can't open the dump file. */
86 * We only need to continue in case of
87 * EEXIT error. Most other error
88 * codes means that we will fail all
97 /* all 100000 possibilities are in use :( */
100 /* Dump the active threads. */
101 strcpy(s, "\n\n========\nACTIVE THREADS\n\n");
102 __sys_write(fd, s, strlen(s));
104 /* Enter a loop to report each thread in the global list: */
105 TAILQ_FOREACH(pthread, &_thread_list, tle) {
106 if (pthread->state != PS_DEAD)
107 dump_thread(fd, pthread, /*long_verson*/ 1);
111 * Dump the ready threads.
112 * XXX - We can't easily do this because the run queues
115 strcpy(s, "\n\n========\nREADY THREADS - unimplemented\n\n");
116 __sys_write(fd, s, strlen(s));
120 * Dump the waiting threads.
121 * XXX - We can't easily do this because the wait queues
124 strcpy(s, "\n\n========\nWAITING THREADS - unimplemented\n\n");
125 __sys_write(fd, s, strlen(s));
127 /* Close the dump file. */
133 dump_thread(int fd, pthread_t pthread, int long_version)
135 struct pthread *curthread = tls_get_curthread();
139 /* Find the state: */
140 for (i = 0; i < NELEMENTS(thread_info) - 1; i++)
141 if (thread_info[i].state == pthread->state)
144 /* Output a record for the thread: */
145 snprintf(s, sizeof(s),
146 "--------------------\n"
147 "Thread %p (%s), scope %s, prio %3d, state %s [%s:%d]\n",
148 pthread, (pthread->name == NULL) ? "" : pthread->name,
149 pthread->attr.flags & PTHREAD_SCOPE_SYSTEM ? "system" : "process",
150 pthread->active_priority,
151 thread_info[i].name, pthread->fname, pthread->lineno);
152 __sys_write(fd, s, strlen(s));
154 if (long_version != 0) {
155 /* Check if this is the running thread: */
156 if (pthread == curthread) {
157 /* Output a record for the running thread: */
158 strcpy(s, "This is the running thread\n");
159 __sys_write(fd, s, strlen(s));
161 /* Check if this is the initial thread: */
162 if (pthread == _thr_initial) {
163 /* Output a record for the initial thread: */
164 strcpy(s, "This is the initial thread\n");
165 __sys_write(fd, s, strlen(s));
168 /* Process according to thread state: */
169 switch (pthread->state) {
171 * Trap other states that are not explicitly
172 * coded to dump information:
175 snprintf(s, sizeof(s), "sigmask (hi) ");
176 __sys_write(fd, s, strlen(s));
177 for (i = _SIG_WORDS - 1; i >= 0; i--) {
178 snprintf(s, sizeof(s), "%08x ",
179 pthread->sigmask.__bits[i]);
180 __sys_write(fd, s, strlen(s));
182 snprintf(s, sizeof(s), "(lo)\n");
183 __sys_write(fd, s, strlen(s));
189 /* Set the thread name for debug: */
191 _pthread_set_name_np(pthread_t thread, char *name)
193 /* Check if the caller has specified a valid thread: */
194 if (thread != NULL && thread->magic == THR_MAGIC) {
195 if (thread->name != NULL) {
196 /* Free space for previous name. */
199 thread->name = strdup(name);
203 __strong_reference(_pthread_set_name_np, pthread_set_name_np);