297 lines
9.1 KiB
C
297 lines
9.1 KiB
C
/*
|
|
* Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
|
|
* All rights reserved.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by John Birrell.
|
|
* 4. 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <paths.h>
|
|
#include <pthread.h>
|
|
#include <unistd.h>
|
|
#include "pthread_private.h"
|
|
|
|
#ifndef NELEMENTS
|
|
#define NELEMENTS(arr) (sizeof(arr) / sizeof(arr[0]))
|
|
#endif
|
|
|
|
static void dump_thread(int fd, pthread_t pthread, int long_version);
|
|
|
|
__weak_reference(_pthread_set_name_np, pthread_set_name_np);
|
|
|
|
struct s_thread_info {
|
|
enum pthread_state state;
|
|
char *name;
|
|
};
|
|
|
|
/* Static variables: */
|
|
static const struct s_thread_info thread_info[] = {
|
|
{PS_RUNNING , "Running"},
|
|
{PS_SIGTHREAD , "Waiting on signal thread"},
|
|
{PS_MUTEX_WAIT , "Waiting on a mutex"},
|
|
{PS_COND_WAIT , "Waiting on a condition variable"},
|
|
{PS_FDLR_WAIT , "Waiting for a file read lock"},
|
|
{PS_FDLW_WAIT , "Waiting for a file write lock"},
|
|
{PS_FDR_WAIT , "Waiting for read"},
|
|
{PS_FDW_WAIT , "Waiting for write"},
|
|
{PS_FILE_WAIT , "Waiting for FILE lock"},
|
|
{PS_POLL_WAIT , "Waiting on poll"},
|
|
{PS_SELECT_WAIT , "Waiting on select"},
|
|
{PS_SLEEP_WAIT , "Sleeping"},
|
|
{PS_WAIT_WAIT , "Waiting process"},
|
|
{PS_SIGSUSPEND , "Suspended, waiting for a signal"},
|
|
{PS_SIGWAIT , "Waiting for a signal"},
|
|
{PS_SPINBLOCK , "Waiting for a spinlock"},
|
|
{PS_JOIN , "Waiting to join"},
|
|
{PS_SUSPENDED , "Suspended"},
|
|
{PS_DEAD , "Dead"},
|
|
{PS_DEADLOCK , "Deadlocked"},
|
|
{PS_STATE_MAX , "Not a real state!"}
|
|
};
|
|
|
|
void
|
|
_thread_dump_info(void)
|
|
{
|
|
char s[512];
|
|
int fd;
|
|
int i;
|
|
pthread_t pthread;
|
|
char *tmpdir;
|
|
char tmpfile[PATH_MAX];
|
|
pq_list_t *pq_list;
|
|
|
|
if (issetugid() != 0 || (tmpdir = getenv("TMPDIR")) == NULL)
|
|
tmpdir = _PATH_TMP;
|
|
for (i = 0; i < 100000; i++) {
|
|
snprintf(tmpfile, sizeof(tmpfile), "%s/uthread.dump.%u.%i",
|
|
tmpdir, getpid(), i);
|
|
/* Open the dump file for append and create it if necessary: */
|
|
if ((fd = __sys_open(tmpfile, O_RDWR | O_CREAT | O_EXCL,
|
|
0644)) < 0) {
|
|
/* Can't open the dump file. */
|
|
if (errno == EEXIST)
|
|
continue;
|
|
/*
|
|
* We only need to continue in case of
|
|
* EEXIT error. Most other error
|
|
* codes means that we will fail all
|
|
* the times.
|
|
*/
|
|
return;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (i==100000) {
|
|
/* all 100000 possibilities are in use :( */
|
|
return;
|
|
} else {
|
|
/* Output a header for active threads: */
|
|
strcpy(s, "\n\n=============\nACTIVE THREADS\n\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
|
|
/* Enter a loop to report each thread in the global list: */
|
|
TAILQ_FOREACH(pthread, &_thread_list, tle) {
|
|
dump_thread(fd, pthread, /*long_verson*/ 1);
|
|
}
|
|
|
|
/* Output a header for ready threads: */
|
|
strcpy(s, "\n\n=============\nREADY THREADS\n\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
|
|
/* Enter a loop to report each thread in the ready queue: */
|
|
TAILQ_FOREACH (pq_list, &_readyq.pq_queue, pl_link) {
|
|
TAILQ_FOREACH(pthread, &pq_list->pl_head, pqe) {
|
|
dump_thread(fd, pthread, /*long_version*/ 0);
|
|
}
|
|
}
|
|
|
|
/* Output a header for waiting threads: */
|
|
strcpy(s, "\n\n=============\nWAITING THREADS\n\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
|
|
/* Enter a loop to report each thread in the waiting queue: */
|
|
TAILQ_FOREACH (pthread, &_waitingq, pqe) {
|
|
dump_thread(fd, pthread, /*long_version*/ 0);
|
|
}
|
|
|
|
/* Output a header for threads in the work queue: */
|
|
strcpy(s, "\n\n=============\nTHREADS IN WORKQ\n\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
|
|
/* Enter a loop to report each thread in the waiting queue: */
|
|
TAILQ_FOREACH (pthread, &_workq, qe) {
|
|
dump_thread(fd, pthread, /*long_version*/ 0);
|
|
}
|
|
|
|
/* Check if there are no dead threads: */
|
|
if (TAILQ_FIRST(&_dead_list) == NULL) {
|
|
/* Output a record: */
|
|
strcpy(s, "\n\nTHERE ARE NO DEAD THREADS\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
} else {
|
|
/* Output a header for dead threads: */
|
|
strcpy(s, "\n\nDEAD THREADS\n\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
|
|
/*
|
|
* Enter a loop to report each thread in the global
|
|
* dead thread list:
|
|
*/
|
|
TAILQ_FOREACH(pthread, &_dead_list, dle) {
|
|
dump_thread(fd, pthread, /*long_version*/ 0);
|
|
}
|
|
}
|
|
|
|
/* Output a header for file descriptors: */
|
|
snprintf(s, sizeof(s), "\n\n=============\nFILE DESCRIPTOR "
|
|
"TABLE (table size %d)\n\n", _thread_dtablesize);
|
|
__sys_write(fd, s, strlen(s));
|
|
|
|
/* Enter a loop to report file descriptor lock usage: */
|
|
for (i = 0; i < _thread_dtablesize; i++) {
|
|
/*
|
|
* Check if memory is allocated for this file
|
|
* descriptor:
|
|
*/
|
|
if (_thread_fd_table[i] != NULL) {
|
|
/* Report the file descriptor lock status: */
|
|
snprintf(s, sizeof(s),
|
|
"fd[%3d] read owner %p count %d [%s:%d]\n"
|
|
" write owner %p count %d [%s:%d]\n",
|
|
i, _thread_fd_table[i]->r_owner,
|
|
_thread_fd_table[i]->r_lockcount,
|
|
_thread_fd_table[i]->r_fname,
|
|
_thread_fd_table[i]->r_lineno,
|
|
_thread_fd_table[i]->w_owner,
|
|
_thread_fd_table[i]->w_lockcount,
|
|
_thread_fd_table[i]->w_fname,
|
|
_thread_fd_table[i]->w_lineno);
|
|
__sys_write(fd, s, strlen(s));
|
|
}
|
|
}
|
|
|
|
/* Close the dump file: */
|
|
__sys_close(fd);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dump_thread(int fd, pthread_t pthread, int long_version)
|
|
{
|
|
struct pthread *curthread = _get_curthread();
|
|
char s[512];
|
|
int i;
|
|
|
|
/* Find the state: */
|
|
for (i = 0; i < NELEMENTS(thread_info) - 1; i++)
|
|
if (thread_info[i].state == pthread->state)
|
|
break;
|
|
|
|
/* Output a record for the thread: */
|
|
snprintf(s, sizeof(s),
|
|
"--------------------\nThread %p (%s) prio %3d state %s",
|
|
pthread, (pthread->name == NULL) ? "" : pthread->name,
|
|
pthread->active_priority, thread_info[i].name);
|
|
__sys_write(fd, s, strlen(s));
|
|
/* And now where it is. */
|
|
if (pthread->fname != NULL) {
|
|
snprintf(s, sizeof(s), " [%s:%d]", pthread->fname,
|
|
pthread->lineno);
|
|
__sys_write(fd, s, strlen(s));
|
|
}
|
|
__sys_write(fd, "\n", 1);
|
|
|
|
if (long_version != 0) {
|
|
/* Check if this is the running thread: */
|
|
if (pthread == curthread) {
|
|
/* Output a record for the running thread: */
|
|
strcpy(s, "This is the running thread\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
}
|
|
/* Check if this is the initial thread: */
|
|
if (pthread == _thread_initial) {
|
|
/* Output a record for the initial thread: */
|
|
strcpy(s, "This is the initial thread\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
}
|
|
/* Process according to thread state: */
|
|
switch (pthread->state) {
|
|
/* File descriptor read lock wait: */
|
|
case PS_FDLR_WAIT:
|
|
case PS_FDLW_WAIT:
|
|
case PS_FDR_WAIT:
|
|
case PS_FDW_WAIT:
|
|
/* Write the lock details: */
|
|
snprintf(s, sizeof(s), "fd %d[%s:%d]",
|
|
pthread->data.fd.fd,
|
|
pthread->data.fd.fname,
|
|
pthread->data.fd.branch);
|
|
__sys_write(fd, s, strlen(s));
|
|
break;
|
|
case PS_SIGWAIT:
|
|
snprintf(s, sizeof(s), "sigmask (hi)");
|
|
__sys_write(fd, s, strlen(s));
|
|
for (i = _SIG_WORDS - 1; i >= 0; i--) {
|
|
snprintf(s, sizeof(s), "%08x\n",
|
|
pthread->sigmask.__bits[i]);
|
|
__sys_write(fd, s, strlen(s));
|
|
}
|
|
snprintf(s, sizeof(s), "(lo)\n");
|
|
__sys_write(fd, s, strlen(s));
|
|
break;
|
|
/*
|
|
* Trap other states that are not explicitly
|
|
* coded to dump information:
|
|
*/
|
|
default:
|
|
/* Nothing to do here. */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Set the thread name for debug: */
|
|
void
|
|
_pthread_set_name_np(pthread_t thread, const char *name)
|
|
{
|
|
/* Check if the caller has specified a valid thread: */
|
|
if (thread != NULL && thread->magic == PTHREAD_MAGIC) {
|
|
if (thread->name != NULL) {
|
|
/* Free space for previous name. */
|
|
free(thread->name);
|
|
}
|
|
thread->name = strdup(name);
|
|
}
|
|
}
|