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-rw-r--r--main/utils.c78
1 files changed, 40 insertions, 38 deletions
diff --git a/main/utils.c b/main/utils.c
index 0001b516c..bfd13d41c 100644
--- a/main/utils.c
+++ b/main/utils.c
@@ -749,46 +749,48 @@ static char *handle_show_locks(struct ast_cli_entry *e, int cmd, struct ast_cli_
pthread_mutex_lock(&lock_infos_lock.mutex);
AST_LIST_TRAVERSE(&lock_infos, lock_info, entry) {
int i;
- ast_str_append(&str, 0, "=== Thread ID: %d (%s)\n", (int) lock_info->thread_id,
- lock_info->thread_name);
- pthread_mutex_lock(&lock_info->lock);
- for (i = 0; str && i < lock_info->num_locks; i++) {
- int j;
- ast_mutex_t *lock;
-
- ast_str_append(&str, 0, "=== ---> %sLock #%d (%s): %s %d %s %s %p (%d)\n",
- lock_info->locks[i].pending > 0 ? "Waiting for " :
- lock_info->locks[i].pending < 0 ? "Tried and failed to get " : "", i,
- lock_info->locks[i].file,
- locktype2str(lock_info->locks[i].type),
- lock_info->locks[i].line_num,
- lock_info->locks[i].func, lock_info->locks[i].lock_name,
- lock_info->locks[i].lock_addr,
- lock_info->locks[i].times_locked);
-
- if (!lock_info->locks[i].pending || lock_info->locks[i].pending == -1)
- continue;
-
- /* We only have further details for mutexes right now */
- if (lock_info->locks[i].type != AST_MUTEX)
- continue;
-
- lock = lock_info->locks[i].lock_addr;
-
- ast_reentrancy_lock(lock);
- for (j = 0; str && j < lock->reentrancy; j++) {
- ast_str_append(&str, 0, "=== --- ---> Locked Here: %s line %d (%s)\n",
- lock->file[j], lock->lineno[j], lock->func[j]);
+ if (lock_info->num_locks) {
+ ast_str_append(&str, 0, "=== Thread ID: %d (%s)\n", (int) lock_info->thread_id,
+ lock_info->thread_name);
+ pthread_mutex_lock(&lock_info->lock);
+ for (i = 0; str && i < lock_info->num_locks; i++) {
+ int j;
+ ast_mutex_t *lock;
+
+ ast_str_append(&str, 0, "=== ---> %sLock #%d (%s): %s %d %s %s %p (%d)\n",
+ lock_info->locks[i].pending > 0 ? "Waiting for " :
+ lock_info->locks[i].pending < 0 ? "Tried and failed to get " : "", i,
+ lock_info->locks[i].file,
+ locktype2str(lock_info->locks[i].type),
+ lock_info->locks[i].line_num,
+ lock_info->locks[i].func, lock_info->locks[i].lock_name,
+ lock_info->locks[i].lock_addr,
+ lock_info->locks[i].times_locked);
+
+ if (!lock_info->locks[i].pending || lock_info->locks[i].pending == -1)
+ continue;
+
+ /* We only have further details for mutexes right now */
+ if (lock_info->locks[i].type != AST_MUTEX)
+ continue;
+
+ lock = lock_info->locks[i].lock_addr;
+
+ ast_reentrancy_lock(lock);
+ for (j = 0; str && j < lock->reentrancy; j++) {
+ ast_str_append(&str, 0, "=== --- ---> Locked Here: %s line %d (%s)\n",
+ lock->file[j], lock->lineno[j], lock->func[j]);
+ }
+ ast_reentrancy_unlock(lock);
}
- ast_reentrancy_unlock(lock);
+ pthread_mutex_unlock(&lock_info->lock);
+ if (!str)
+ break;
+ ast_str_append(&str, 0, "=== -------------------------------------------------------------------\n"
+ "===\n");
+ if (!str)
+ break;
}
- pthread_mutex_unlock(&lock_info->lock);
- if (!str)
- break;
- ast_str_append(&str, 0, "=== -------------------------------------------------------------------\n"
- "===\n");
- if (!str)
- break;
}
pthread_mutex_unlock(&lock_infos_lock.mutex);