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8713d9a573
ast_reentrancy_init checks to see if it is NULL before initializing with calloc git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@314358 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1436 lines
40 KiB
C
1436 lines
40 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2010, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief General Asterisk locking.
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/lock.h"
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/* Allow direct use of pthread_mutex_* / pthread_cond_* */
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#undef pthread_mutex_init
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#undef pthread_mutex_destroy
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#undef pthread_mutex_lock
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#undef pthread_mutex_trylock
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#undef pthread_mutex_t
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#undef pthread_mutex_unlock
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#undef pthread_cond_init
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#undef pthread_cond_signal
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#undef pthread_cond_broadcast
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#undef pthread_cond_destroy
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#undef pthread_cond_wait
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#undef pthread_cond_timedwait
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int __ast_pthread_mutex_init(int tracking, const char *filename, int lineno, const char *func,
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const char *mutex_name, ast_mutex_t *t)
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{
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int res;
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pthread_mutexattr_t attr;
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t->track = NULL;
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#ifdef DEBUG_THREADS
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
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if ((t->mutex) != ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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/*
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int canlog = strcmp(filename, "logger.c") & track;
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__ast_mutex_logger("%s line %d (%s): NOTICE: mutex '%s' is already initialized.\n",
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filename, lineno, func, mutex_name);
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DO_THREAD_CRASH;
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*/
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return 0;
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}
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#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
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if ((t->tracking = tracking)) {
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ast_reentrancy_init(&t->track);
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}
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#endif /* DEBUG_THREADS */
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pthread_mutexattr_init(&attr);
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pthread_mutexattr_settype(&attr, AST_MUTEX_KIND);
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res = pthread_mutex_init(&t->mutex, &attr);
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pthread_mutexattr_destroy(&attr);
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return res;
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}
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int __ast_pthread_mutex_destroy(const char *filename, int lineno, const char *func,
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const char *mutex_name, ast_mutex_t *t)
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{
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int res;
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#ifdef DEBUG_THREADS
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struct ast_lock_track *lt;
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int canlog = strcmp(filename, "logger.c") & t->tracking;
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
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if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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/* Don't try to uninitialize non initialized mutex
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* This may no effect on linux
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* And always ganerate core on *BSD with
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* linked libpthread
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* This not error condition if the mutex created on the fly.
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*/
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__ast_mutex_logger("%s line %d (%s): NOTICE: mutex '%s' is uninitialized.\n",
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filename, lineno, func, mutex_name);
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return 0;
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}
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#endif
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if (t->tracking && !t->track) {
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ast_reentrancy_init(&t->track);
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}
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lt = t->track;
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res = pthread_mutex_trylock(&t->mutex);
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switch (res) {
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case 0:
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pthread_mutex_unlock(&t->mutex);
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break;
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case EINVAL:
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__ast_mutex_logger("%s line %d (%s): Error: attempt to destroy invalid mutex '%s'.\n",
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filename, lineno, func, mutex_name);
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break;
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case EBUSY:
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__ast_mutex_logger("%s line %d (%s): Error: attempt to destroy locked mutex '%s'.\n",
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filename, lineno, func, mutex_name);
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if (t->tracking) {
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ast_reentrancy_lock(lt);
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__ast_mutex_logger("%s line %d (%s): Error: '%s' was locked here.\n",
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lt->file[ROFFSET], lt->lineno[ROFFSET], lt->func[ROFFSET], mutex_name);
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#ifdef HAVE_BKTR
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__dump_backtrace(<->backtrace[ROFFSET], canlog);
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#endif
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ast_reentrancy_unlock(lt);
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}
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break;
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}
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#endif /* DEBUG_THREADS */
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res = pthread_mutex_destroy(&t->mutex);
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#ifdef DEBUG_THREADS
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if (res) {
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__ast_mutex_logger("%s line %d (%s): Error destroying mutex %s: %s\n",
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filename, lineno, func, mutex_name, strerror(res));
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}
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if (t->tracking) {
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ast_reentrancy_lock(lt);
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lt->file[0] = filename;
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lt->lineno[0] = lineno;
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lt->func[0] = func;
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lt->reentrancy = 0;
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lt->thread[0] = 0;
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#ifdef HAVE_BKTR
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memset(<->backtrace[0], 0, sizeof(lt->backtrace[0]));
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#endif
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ast_reentrancy_unlock(lt);
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delete_reentrancy_cs(&t->track);
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}
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#endif /* DEBUG_THREADS */
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return res;
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}
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int __ast_pthread_mutex_lock(const char *filename, int lineno, const char *func,
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const char* mutex_name, ast_mutex_t *t)
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{
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int res;
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#ifdef DEBUG_THREADS
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struct ast_lock_track *lt;
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int canlog = strcmp(filename, "logger.c") & t->tracking;
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#ifdef HAVE_BKTR
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struct ast_bt *bt = NULL;
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#endif
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
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if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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/* Don't warn abount uninitialized mutex.
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* Simple try to initialize it.
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* May be not needed in linux system.
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*/
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res = __ast_pthread_mutex_init(t->tracking, filename, lineno, func, mutex_name, t);
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if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n",
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filename, lineno, func, mutex_name);
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return res;
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}
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}
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#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
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if (t->tracking && !t->track) {
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ast_reentrancy_init(&t->track);
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}
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lt = t->track;
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if (t->tracking) {
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#ifdef HAVE_BKTR
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ast_reentrancy_lock(lt);
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if (lt->reentrancy != AST_MAX_REENTRANCY) {
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ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
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bt = <->backtrace[lt->reentrancy];
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}
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ast_reentrancy_unlock(lt);
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ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t, bt);
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#else
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ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t);
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#endif
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}
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#endif /* DEBUG_THREADS */
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#if defined(DETECT_DEADLOCKS) && defined(DEBUG_THREADS)
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{
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time_t seconds = time(NULL);
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time_t wait_time, reported_wait = 0;
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do {
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#ifdef HAVE_MTX_PROFILE
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ast_mark(mtx_prof, 1);
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#endif
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res = pthread_mutex_trylock(&t->mutex);
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#ifdef HAVE_MTX_PROFILE
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ast_mark(mtx_prof, 0);
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#endif
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if (res == EBUSY) {
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wait_time = time(NULL) - seconds;
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if (wait_time > reported_wait && (wait_time % 5) == 0) {
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__ast_mutex_logger("%s line %d (%s): Deadlock? waited %d sec for mutex '%s'?\n",
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filename, lineno, func, (int) wait_time, mutex_name);
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ast_reentrancy_lock(lt);
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#ifdef HAVE_BKTR
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__dump_backtrace(<->backtrace[lt->reentrancy], canlog);
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#endif
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__ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n",
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lt->file[ROFFSET], lt->lineno[ROFFSET],
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lt->func[ROFFSET], mutex_name);
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#ifdef HAVE_BKTR
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__dump_backtrace(<->backtrace[ROFFSET], canlog);
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#endif
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ast_reentrancy_unlock(lt);
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reported_wait = wait_time;
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}
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usleep(200);
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}
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} while (res == EBUSY);
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}
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#else /* !DETECT_DEADLOCKS || !DEBUG_THREADS */
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#ifdef HAVE_MTX_PROFILE
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ast_mark(mtx_prof, 1);
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res = pthread_mutex_trylock(&t->mutex);
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ast_mark(mtx_prof, 0);
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if (res)
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#endif
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res = pthread_mutex_lock(&t->mutex);
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#endif /* !DETECT_DEADLOCKS || !DEBUG_THREADS */
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#ifdef DEBUG_THREADS
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if (t->tracking && !res) {
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ast_reentrancy_lock(lt);
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if (lt->reentrancy < AST_MAX_REENTRANCY) {
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lt->file[lt->reentrancy] = filename;
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lt->lineno[lt->reentrancy] = lineno;
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lt->func[lt->reentrancy] = func;
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lt->thread[lt->reentrancy] = pthread_self();
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lt->reentrancy++;
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} else {
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__ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n",
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filename, lineno, func, mutex_name);
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}
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ast_reentrancy_unlock(lt);
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if (t->tracking) {
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ast_mark_lock_acquired(t);
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}
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} else if (t->tracking) {
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#ifdef HAVE_BKTR
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if (lt->reentrancy) {
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ast_reentrancy_lock(lt);
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bt = <->backtrace[lt->reentrancy-1];
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ast_reentrancy_unlock(lt);
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} else {
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bt = NULL;
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}
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ast_remove_lock_info(t, bt);
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#else
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ast_remove_lock_info(t);
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#endif
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}
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if (res) {
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__ast_mutex_logger("%s line %d (%s): Error obtaining mutex: %s\n",
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filename, lineno, func, strerror(res));
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DO_THREAD_CRASH;
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}
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#endif /* DEBUG_THREADS */
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return res;
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}
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int __ast_pthread_mutex_trylock(const char *filename, int lineno, const char *func,
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const char* mutex_name, ast_mutex_t *t)
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{
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int res;
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#ifdef DEBUG_THREADS
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struct ast_lock_track *lt;
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int canlog = strcmp(filename, "logger.c") & t->tracking;
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#ifdef HAVE_BKTR
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struct ast_bt *bt = NULL;
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#endif
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
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if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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/* Don't warn abount uninitialized mutex.
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* Simple try to initialize it.
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* May be not needed in linux system.
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*/
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res = __ast_pthread_mutex_init(t->tracking, filename, lineno, func, mutex_name, t);
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if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n",
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filename, lineno, func, mutex_name);
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return res;
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}
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}
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#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
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if (t->tracking && !t->track) {
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ast_reentrancy_init(&t->track);
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}
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lt = t->track;
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if (t->tracking) {
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#ifdef HAVE_BKTR
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ast_reentrancy_lock(lt);
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if (lt->reentrancy != AST_MAX_REENTRANCY) {
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ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
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bt = <->backtrace[lt->reentrancy];
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}
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ast_reentrancy_unlock(lt);
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ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t, bt);
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#else
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ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t);
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#endif
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}
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#endif /* DEBUG_THREADS */
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res = pthread_mutex_trylock(&t->mutex);
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#ifdef DEBUG_THREADS
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if (t->tracking && !res) {
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ast_reentrancy_lock(lt);
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if (lt->reentrancy < AST_MAX_REENTRANCY) {
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lt->file[lt->reentrancy] = filename;
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lt->lineno[lt->reentrancy] = lineno;
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lt->func[lt->reentrancy] = func;
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lt->thread[lt->reentrancy] = pthread_self();
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lt->reentrancy++;
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} else {
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__ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n",
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filename, lineno, func, mutex_name);
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}
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ast_reentrancy_unlock(lt);
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if (t->tracking) {
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ast_mark_lock_acquired(t);
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}
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} else if (t->tracking) {
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ast_mark_lock_failed(t);
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}
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#endif /* DEBUG_THREADS */
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return res;
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}
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int __ast_pthread_mutex_unlock(const char *filename, int lineno, const char *func,
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const char *mutex_name, ast_mutex_t *t)
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{
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int res;
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#ifdef DEBUG_THREADS
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struct ast_lock_track *lt;
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int canlog = strcmp(filename, "logger.c") & t->tracking;
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#ifdef HAVE_BKTR
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struct ast_bt *bt = NULL;
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#endif
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
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if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized.\n",
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filename, lineno, func, mutex_name);
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res = __ast_pthread_mutex_init(t->tracking, filename, lineno, func, mutex_name, t);
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if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
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__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n",
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filename, lineno, func, mutex_name);
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}
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return res;
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}
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#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
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if (t->tracking && !t->track) {
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ast_reentrancy_init(&t->track);
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}
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lt = t->track;
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if (t->tracking) {
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ast_reentrancy_lock(lt);
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if (lt->reentrancy && (lt->thread[ROFFSET] != pthread_self())) {
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__ast_mutex_logger("%s line %d (%s): attempted unlock mutex '%s' without owning it!\n",
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filename, lineno, func, mutex_name);
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__ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n",
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lt->file[ROFFSET], lt->lineno[ROFFSET], lt->func[ROFFSET], mutex_name);
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#ifdef HAVE_BKTR
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__dump_backtrace(<->backtrace[ROFFSET], canlog);
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#endif
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DO_THREAD_CRASH;
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}
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if (--lt->reentrancy < 0) {
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__ast_mutex_logger("%s line %d (%s): mutex '%s' freed more times than we've locked!\n",
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filename, lineno, func, mutex_name);
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lt->reentrancy = 0;
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}
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if (lt->reentrancy < AST_MAX_REENTRANCY) {
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lt->file[lt->reentrancy] = NULL;
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lt->lineno[lt->reentrancy] = 0;
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lt->func[lt->reentrancy] = NULL;
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lt->thread[lt->reentrancy] = 0;
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}
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#ifdef HAVE_BKTR
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if (lt->reentrancy) {
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bt = <->backtrace[lt->reentrancy - 1];
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}
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#endif
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ast_reentrancy_unlock(lt);
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#ifdef HAVE_BKTR
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ast_remove_lock_info(t, bt);
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#else
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ast_remove_lock_info(t);
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#endif
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}
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#endif /* DEBUG_THREADS */
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res = pthread_mutex_unlock(&t->mutex);
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#ifdef DEBUG_THREADS
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if (res) {
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__ast_mutex_logger("%s line %d (%s): Error releasing mutex: %s\n",
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filename, lineno, func, strerror(res));
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DO_THREAD_CRASH;
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}
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#endif /* DEBUG_THREADS */
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return res;
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}
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int __ast_cond_init(const char *filename, int lineno, const char *func,
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const char *cond_name, ast_cond_t *cond, pthread_condattr_t *cond_attr)
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{
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return pthread_cond_init(cond, cond_attr);
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}
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int __ast_cond_signal(const char *filename, int lineno, const char *func,
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const char *cond_name, ast_cond_t *cond)
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{
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return pthread_cond_signal(cond);
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}
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int __ast_cond_broadcast(const char *filename, int lineno, const char *func,
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const char *cond_name, ast_cond_t *cond)
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{
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return pthread_cond_broadcast(cond);
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}
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int __ast_cond_destroy(const char *filename, int lineno, const char *func,
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const char *cond_name, ast_cond_t *cond)
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{
|
|
return pthread_cond_destroy(cond);
|
|
}
|
|
|
|
int __ast_cond_wait(const char *filename, int lineno, const char *func,
|
|
const char *cond_name, const char *mutex_name,
|
|
ast_cond_t *cond, ast_mutex_t *t)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized.\n",
|
|
filename, lineno, func, mutex_name);
|
|
res = __ast_pthread_mutex_init(t->tracking, filename, lineno, func, mutex_name, t);
|
|
if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n",
|
|
filename, lineno, func, mutex_name);
|
|
}
|
|
return res;
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy && (lt->thread[ROFFSET] != pthread_self())) {
|
|
__ast_mutex_logger("%s line %d (%s): attempted unlock mutex '%s' without owning it!\n",
|
|
filename, lineno, func, mutex_name);
|
|
__ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n",
|
|
lt->file[ROFFSET], lt->lineno[ROFFSET], lt->func[ROFFSET], mutex_name);
|
|
#ifdef HAVE_BKTR
|
|
__dump_backtrace(<->backtrace[ROFFSET], canlog);
|
|
#endif
|
|
DO_THREAD_CRASH;
|
|
}
|
|
|
|
if (--lt->reentrancy < 0) {
|
|
__ast_mutex_logger("%s line %d (%s): mutex '%s' freed more times than we've locked!\n",
|
|
filename, lineno, func, mutex_name);
|
|
lt->reentrancy = 0;
|
|
}
|
|
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = NULL;
|
|
lt->lineno[lt->reentrancy] = 0;
|
|
lt->func[lt->reentrancy] = NULL;
|
|
lt->thread[lt->reentrancy] = 0;
|
|
}
|
|
|
|
#ifdef HAVE_BKTR
|
|
if (lt->reentrancy) {
|
|
bt = <->backtrace[lt->reentrancy - 1];
|
|
}
|
|
#endif
|
|
ast_reentrancy_unlock(lt);
|
|
|
|
#ifdef HAVE_BKTR
|
|
ast_remove_lock_info(t, bt);
|
|
#else
|
|
ast_remove_lock_info(t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
res = pthread_cond_wait(cond, &t->mutex);
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (res) {
|
|
__ast_mutex_logger("%s line %d (%s): Error waiting on condition mutex '%s'\n",
|
|
filename, lineno, func, strerror(res));
|
|
DO_THREAD_CRASH;
|
|
} else if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = lineno;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
#ifdef HAVE_BKTR
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
#endif
|
|
lt->reentrancy++;
|
|
} else {
|
|
__ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n",
|
|
filename, lineno, func, mutex_name);
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
|
|
#ifdef HAVE_BKTR
|
|
ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_cond_timedwait(const char *filename, int lineno, const char *func,
|
|
const char *cond_name, const char *mutex_name, ast_cond_t *cond,
|
|
ast_mutex_t *t, const struct timespec *abstime)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized.\n",
|
|
filename, lineno, func, mutex_name);
|
|
res = __ast_pthread_mutex_init(t->tracking, filename, lineno, func, mutex_name, t);
|
|
if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n",
|
|
filename, lineno, func, mutex_name);
|
|
}
|
|
return res;
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy && (lt->thread[ROFFSET] != pthread_self())) {
|
|
__ast_mutex_logger("%s line %d (%s): attempted unlock mutex '%s' without owning it!\n",
|
|
filename, lineno, func, mutex_name);
|
|
__ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n",
|
|
lt->file[ROFFSET], lt->lineno[ROFFSET], lt->func[ROFFSET], mutex_name);
|
|
#ifdef HAVE_BKTR
|
|
__dump_backtrace(<->backtrace[ROFFSET], canlog);
|
|
#endif
|
|
DO_THREAD_CRASH;
|
|
}
|
|
|
|
if (--lt->reentrancy < 0) {
|
|
__ast_mutex_logger("%s line %d (%s): mutex '%s' freed more times than we've locked!\n",
|
|
filename, lineno, func, mutex_name);
|
|
lt->reentrancy = 0;
|
|
}
|
|
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = NULL;
|
|
lt->lineno[lt->reentrancy] = 0;
|
|
lt->func[lt->reentrancy] = NULL;
|
|
lt->thread[lt->reentrancy] = 0;
|
|
}
|
|
#ifdef HAVE_BKTR
|
|
if (lt->reentrancy) {
|
|
bt = <->backtrace[lt->reentrancy - 1];
|
|
}
|
|
#endif
|
|
ast_reentrancy_unlock(lt);
|
|
|
|
#ifdef HAVE_BKTR
|
|
ast_remove_lock_info(t, bt);
|
|
#else
|
|
ast_remove_lock_info(t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
res = pthread_cond_timedwait(cond, &t->mutex, abstime);
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (res && (res != ETIMEDOUT)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error waiting on condition mutex '%s'\n",
|
|
filename, lineno, func, strerror(res));
|
|
DO_THREAD_CRASH;
|
|
} else if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = lineno;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
#ifdef HAVE_BKTR
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
#endif
|
|
lt->reentrancy++;
|
|
} else {
|
|
__ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n",
|
|
filename, lineno, func, mutex_name);
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
|
|
#ifdef HAVE_BKTR
|
|
ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_init(int tracking, const char *filename, int lineno, const char *func, const char *rwlock_name, ast_rwlock_t *t)
|
|
{
|
|
int res;
|
|
pthread_rwlockattr_t attr;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
|
|
if (t->lock != ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Warning: rwlock '%s' is already initialized.\n",
|
|
filename, lineno, func, rwlock_name);
|
|
return 0;
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if ((t->tracking = tracking)) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
pthread_rwlockattr_init(&attr);
|
|
|
|
#ifdef HAVE_PTHREAD_RWLOCK_PREFER_WRITER_NP
|
|
pthread_rwlockattr_setkind_np(&attr, PTHREAD_RWLOCK_PREFER_WRITER_NP);
|
|
#endif
|
|
|
|
res = pthread_rwlock_init(&t->lock, &attr);
|
|
pthread_rwlockattr_destroy(&attr);
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_destroy(const char *filename, int lineno, const char *func, const char *rwlock_name, ast_rwlock_t *t)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt = t->track;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if (t->lock == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Warning: rwlock '%s' is uninitialized.\n",
|
|
filename, lineno, func, rwlock_name);
|
|
return 0;
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
res = pthread_rwlock_destroy(&t->lock);
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (res) {
|
|
__ast_mutex_logger("%s line %d (%s): Error destroying rwlock %s: %s\n",
|
|
filename, lineno, func, rwlock_name, strerror(res));
|
|
}
|
|
if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
lt->file[0] = filename;
|
|
lt->lineno[0] = lineno;
|
|
lt->func[0] = func;
|
|
lt->reentrancy = 0;
|
|
lt->thread[0] = 0;
|
|
#ifdef HAVE_BKTR
|
|
memset(<->backtrace[0], 0, sizeof(lt->backtrace[0]));
|
|
#endif
|
|
ast_reentrancy_unlock(lt);
|
|
delete_reentrancy_cs(&t->track);
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_unlock(const char *filename, int line, const char *func, ast_rwlock_t *t, const char *name)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
int lock_found = 0;
|
|
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Warning: rwlock '%s' is uninitialized.\n",
|
|
filename, line, func, name);
|
|
res = __ast_rwlock_init(t->tracking, filename, line, func, name, t);
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n",
|
|
filename, line, func, name);
|
|
}
|
|
return res;
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy) {
|
|
int i;
|
|
pthread_t self = pthread_self();
|
|
for (i = lt->reentrancy - 1; i >= 0; --i) {
|
|
if (lt->thread[i] == self) {
|
|
lock_found = 1;
|
|
if (i != lt->reentrancy - 1) {
|
|
lt->file[i] = lt->file[lt->reentrancy - 1];
|
|
lt->lineno[i] = lt->lineno[lt->reentrancy - 1];
|
|
lt->func[i] = lt->func[lt->reentrancy - 1];
|
|
lt->thread[i] = lt->thread[lt->reentrancy - 1];
|
|
}
|
|
#ifdef HAVE_BKTR
|
|
bt = <->backtrace[i];
|
|
#endif
|
|
lt->file[lt->reentrancy - 1] = NULL;
|
|
lt->lineno[lt->reentrancy - 1] = 0;
|
|
lt->func[lt->reentrancy - 1] = NULL;
|
|
lt->thread[lt->reentrancy - 1] = AST_PTHREADT_NULL;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (lock_found && --lt->reentrancy < 0) {
|
|
__ast_mutex_logger("%s line %d (%s): rwlock '%s' freed more times than we've locked!\n",
|
|
filename, line, func, name);
|
|
lt->reentrancy = 0;
|
|
}
|
|
|
|
ast_reentrancy_unlock(lt);
|
|
|
|
#ifdef HAVE_BKTR
|
|
ast_remove_lock_info(t, bt);
|
|
#else
|
|
ast_remove_lock_info(t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
res = pthread_rwlock_unlock(&t->lock);
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (res) {
|
|
__ast_mutex_logger("%s line %d (%s): Error releasing rwlock: %s\n",
|
|
filename, line, func, strerror(res));
|
|
DO_THREAD_CRASH;
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_rdlock(const char *filename, int line, const char *func, ast_rwlock_t *t, const char *name)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
/* Don't warn abount uninitialized lock.
|
|
* Simple try to initialize it.
|
|
* May be not needed in linux system.
|
|
*/
|
|
res = __ast_rwlock_init(t->tracking, filename, line, func, name, t);
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n",
|
|
filename, line, func, name);
|
|
return res;
|
|
}
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy != AST_MAX_REENTRANCY) {
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
ast_store_lock_info(AST_RDLOCK, filename, line, func, name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_RDLOCK, filename, line, func, name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
#if defined(DETECT_DEADLOCKS) && defined(DEBUG_THREADS)
|
|
{
|
|
time_t seconds = time(NULL);
|
|
time_t wait_time, reported_wait = 0;
|
|
do {
|
|
res = pthread_rwlock_tryrdlock(&t->lock);
|
|
if (res == EBUSY) {
|
|
wait_time = time(NULL) - seconds;
|
|
if (wait_time > reported_wait && (wait_time % 5) == 0) {
|
|
__ast_mutex_logger("%s line %d (%s): Deadlock? waited %d sec for readlock '%s'?\n",
|
|
filename, line, func, (int)wait_time, name);
|
|
if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
#ifdef HAVE_BKTR
|
|
__dump_backtrace(<->backtrace[lt->reentrancy], canlog);
|
|
#endif
|
|
__ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n",
|
|
lt->file[lt->reentrancy-1], lt->lineno[lt->reentrancy-1],
|
|
lt->func[lt->reentrancy-1], name);
|
|
#ifdef HAVE_BKTR
|
|
__dump_backtrace(<->backtrace[lt->reentrancy-1], canlog);
|
|
#endif
|
|
ast_reentrancy_unlock(lt);
|
|
}
|
|
reported_wait = wait_time;
|
|
}
|
|
usleep(200);
|
|
}
|
|
} while (res == EBUSY);
|
|
}
|
|
#else /* !DETECT_DEADLOCKS || !DEBUG_THREADS */
|
|
res = pthread_rwlock_rdlock(&t->lock);
|
|
#endif /* !DETECT_DEADLOCKS || !DEBUG_THREADS */
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (!res && t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = line;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
lt->reentrancy++;
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
if (t->tracking) {
|
|
ast_mark_lock_acquired(t);
|
|
}
|
|
} else if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
if (lt->reentrancy) {
|
|
ast_reentrancy_lock(lt);
|
|
bt = <->backtrace[lt->reentrancy-1];
|
|
ast_reentrancy_unlock(lt);
|
|
} else {
|
|
bt = NULL;
|
|
}
|
|
ast_remove_lock_info(t, bt);
|
|
#else
|
|
ast_remove_lock_info(t);
|
|
#endif
|
|
}
|
|
|
|
if (res) {
|
|
__ast_mutex_logger("%s line %d (%s): Error obtaining read lock: %s\n",
|
|
filename, line, func, strerror(res));
|
|
DO_THREAD_CRASH;
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_wrlock(const char *filename, int line, const char *func, ast_rwlock_t *t, const char *name)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
/* Don't warn abount uninitialized lock.
|
|
* Simple try to initialize it.
|
|
* May be not needed in linux system.
|
|
*/
|
|
res = __ast_rwlock_init(t->tracking, filename, line, func, name, t);
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n",
|
|
filename, line, func, name);
|
|
return res;
|
|
}
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy != AST_MAX_REENTRANCY) {
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
#if defined(DETECT_DEADLOCKS) && defined(DEBUG_THREADS)
|
|
{
|
|
time_t seconds = time(NULL);
|
|
time_t wait_time, reported_wait = 0;
|
|
do {
|
|
res = pthread_rwlock_trywrlock(&t->lock);
|
|
if (res == EBUSY) {
|
|
wait_time = time(NULL) - seconds;
|
|
if (wait_time > reported_wait && (wait_time % 5) == 0) {
|
|
__ast_mutex_logger("%s line %d (%s): Deadlock? waited %d sec for writelock '%s'?\n",
|
|
filename, line, func, (int)wait_time, name);
|
|
if (t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
#ifdef HAVE_BKTR
|
|
__dump_backtrace(<->backtrace[lt->reentrancy], canlog);
|
|
#endif
|
|
__ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n",
|
|
lt->file[lt->reentrancy-1], lt->lineno[lt->reentrancy-1],
|
|
lt->func[lt->reentrancy-1], name);
|
|
#ifdef HAVE_BKTR
|
|
__dump_backtrace(<->backtrace[lt->reentrancy-1], canlog);
|
|
#endif
|
|
ast_reentrancy_unlock(lt);
|
|
}
|
|
reported_wait = wait_time;
|
|
}
|
|
usleep(200);
|
|
}
|
|
} while (res == EBUSY);
|
|
}
|
|
#else /* !DETECT_DEADLOCKS || !DEBUG_THREADS */
|
|
res = pthread_rwlock_wrlock(&t->lock);
|
|
#endif /* !DETECT_DEADLOCKS || !DEBUG_THREADS */
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (!res && t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = line;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
lt->reentrancy++;
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
if (t->tracking) {
|
|
ast_mark_lock_acquired(t);
|
|
}
|
|
} else if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
if (lt->reentrancy) {
|
|
ast_reentrancy_lock(lt);
|
|
bt = <->backtrace[lt->reentrancy-1];
|
|
ast_reentrancy_unlock(lt);
|
|
} else {
|
|
bt = NULL;
|
|
}
|
|
if (t->tracking) {
|
|
ast_remove_lock_info(t, bt);
|
|
}
|
|
#else
|
|
if (t->tracking) {
|
|
ast_remove_lock_info(t);
|
|
}
|
|
#endif
|
|
}
|
|
if (res) {
|
|
__ast_mutex_logger("%s line %d (%s): Error obtaining write lock: %s\n",
|
|
filename, line, func, strerror(res));
|
|
DO_THREAD_CRASH;
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_timedrdlock(const char *filename, int line, const char *func, ast_rwlock_t *t, const char *name,
|
|
const struct timespec *abs_timeout)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
/* Don't warn abount uninitialized lock.
|
|
* Simple try to initialize it.
|
|
* May be not needed in linux system.
|
|
*/
|
|
res = __ast_rwlock_init(t->tracking, filename, line, func, name, t);
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n",
|
|
filename, line, func, name);
|
|
return res;
|
|
}
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy != AST_MAX_REENTRANCY) {
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
#ifdef HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK
|
|
res = pthread_rwlock_timedrdlock(&t->lock, abs_timeout);
|
|
#else
|
|
do {
|
|
struct timeval _start = ast_tvnow(), _diff;
|
|
for (;;) {
|
|
if (!(res = pthread_rwlock_tryrdlock(&t->lock))) {
|
|
break;
|
|
}
|
|
_diff = ast_tvsub(ast_tvnow(), _start);
|
|
if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) {
|
|
break;
|
|
}
|
|
usleep(1);
|
|
}
|
|
} while (0);
|
|
#endif
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (!res && t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = line;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
lt->reentrancy++;
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
if (t->tracking) {
|
|
ast_mark_lock_acquired(t);
|
|
}
|
|
} else if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
if (lt->reentrancy) {
|
|
ast_reentrancy_lock(lt);
|
|
bt = <->backtrace[lt->reentrancy-1];
|
|
ast_reentrancy_unlock(lt);
|
|
} else {
|
|
bt = NULL;
|
|
}
|
|
ast_remove_lock_info(t, bt);
|
|
#else
|
|
ast_remove_lock_info(t);
|
|
#endif
|
|
}
|
|
if (res) {
|
|
__ast_mutex_logger("%s line %d (%s): Error obtaining read lock: %s\n",
|
|
filename, line, func, strerror(res));
|
|
DO_THREAD_CRASH;
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_timedwrlock(const char *filename, int line, const char *func, ast_rwlock_t *t, const char *name,
|
|
const struct timespec *abs_timeout)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
/* Don't warn abount uninitialized lock.
|
|
* Simple try to initialize it.
|
|
* May be not needed in linux system.
|
|
*/
|
|
res = __ast_rwlock_init(t->tracking, filename, line, func, name, t);
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n",
|
|
filename, line, func, name);
|
|
return res;
|
|
}
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy != AST_MAX_REENTRANCY) {
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
#ifdef HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK
|
|
res = pthread_rwlock_timedwrlock(&t->lock, abs_timeout);
|
|
#else
|
|
do {
|
|
struct timeval _start = ast_tvnow(), _diff;
|
|
for (;;) {
|
|
if (!(res = pthread_rwlock_trywrlock(&t->lock))) {
|
|
break;
|
|
}
|
|
_diff = ast_tvsub(ast_tvnow(), _start);
|
|
if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) {
|
|
break;
|
|
}
|
|
usleep(1);
|
|
}
|
|
} while (0);
|
|
#endif
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (!res && t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = line;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
lt->reentrancy++;
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
if (t->tracking) {
|
|
ast_mark_lock_acquired(t);
|
|
}
|
|
} else if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
if (lt->reentrancy) {
|
|
ast_reentrancy_lock(lt);
|
|
bt = <->backtrace[lt->reentrancy-1];
|
|
ast_reentrancy_unlock(lt);
|
|
} else {
|
|
bt = NULL;
|
|
}
|
|
if (t->tracking) {
|
|
ast_remove_lock_info(t, bt);
|
|
}
|
|
#else
|
|
if (t->tracking) {
|
|
ast_remove_lock_info(t);
|
|
}
|
|
#endif
|
|
}
|
|
if (res) {
|
|
__ast_mutex_logger("%s line %d (%s): Error obtaining read lock: %s\n",
|
|
filename, line, func, strerror(res));
|
|
DO_THREAD_CRASH;
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_tryrdlock(const char *filename, int line, const char *func, ast_rwlock_t *t, const char *name)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
/* Don't warn abount uninitialized lock.
|
|
* Simple try to initialize it.
|
|
* May be not needed in linux system.
|
|
*/
|
|
res = __ast_rwlock_init(t->tracking, filename, line, func, name, t);
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n",
|
|
filename, line, func, name);
|
|
return res;
|
|
}
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy != AST_MAX_REENTRANCY) {
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
ast_store_lock_info(AST_RDLOCK, filename, line, func, name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_RDLOCK, filename, line, func, name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
res = pthread_rwlock_tryrdlock(&t->lock);
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (!res && t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = line;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
lt->reentrancy++;
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
if (t->tracking) {
|
|
ast_mark_lock_acquired(t);
|
|
}
|
|
} else if (t->tracking) {
|
|
ast_mark_lock_failed(t);
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_rwlock_trywrlock(const char *filename, int line, const char *func, ast_rwlock_t *t, const char *name)
|
|
{
|
|
int res;
|
|
|
|
#ifdef DEBUG_THREADS
|
|
struct ast_lock_track *lt;
|
|
#ifdef HAVE_BKTR
|
|
struct ast_bt *bt = NULL;
|
|
#endif
|
|
#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) && defined(CAN_COMPARE_MUTEX_TO_INIT_VALUE)
|
|
int canlog = strcmp(filename, "logger.c") & t->tracking;
|
|
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
/* Don't warn abount uninitialized lock.
|
|
* Simple try to initialize it.
|
|
* May be not needed in linux system.
|
|
*/
|
|
res = __ast_rwlock_init(t->tracking, filename, line, func, name, t);
|
|
if ((t->lock) == ((pthread_rwlock_t) __AST_RWLOCK_INIT_VALUE)) {
|
|
__ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n",
|
|
filename, line, func, name);
|
|
return res;
|
|
}
|
|
}
|
|
#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
|
|
|
|
if (t->tracking && !t->track) {
|
|
ast_reentrancy_init(&t->track);
|
|
}
|
|
lt = t->track;
|
|
|
|
if (t->tracking) {
|
|
#ifdef HAVE_BKTR
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy != AST_MAX_REENTRANCY) {
|
|
ast_bt_get_addresses(<->backtrace[lt->reentrancy]);
|
|
bt = <->backtrace[lt->reentrancy];
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t, bt);
|
|
#else
|
|
ast_store_lock_info(AST_WRLOCK, filename, line, func, name, t);
|
|
#endif
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
res = pthread_rwlock_trywrlock(&t->lock);
|
|
|
|
#ifdef DEBUG_THREADS
|
|
if (!res && t->tracking) {
|
|
ast_reentrancy_lock(lt);
|
|
if (lt->reentrancy < AST_MAX_REENTRANCY) {
|
|
lt->file[lt->reentrancy] = filename;
|
|
lt->lineno[lt->reentrancy] = line;
|
|
lt->func[lt->reentrancy] = func;
|
|
lt->thread[lt->reentrancy] = pthread_self();
|
|
lt->reentrancy++;
|
|
}
|
|
ast_reentrancy_unlock(lt);
|
|
ast_mark_lock_acquired(t);
|
|
} else if (t->tracking) {
|
|
ast_mark_lock_failed(t);
|
|
}
|
|
#endif /* DEBUG_THREADS */
|
|
|
|
return res;
|
|
}
|