Don't attempt to access private data members of the pthread_mutex_t object,

because this does not work on all linux systems.  Instead, just access
the reentrancy field in the ast_mutex_info struct when DEBUG_THREADS is
enabled.  If DEBUG_CHANNEL_LOCKS is enabled, the developer probably has
DEBUG_THREADS on as well.
(issue #8139, me)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@45441 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/channel.c

@@ -4468,17 +4468,9 @@ int ast_channel_unlock(struct ast_channel *chan)
 	res = ast_mutex_unlock(&chan->lock);
 
 	if (option_debug > 2) {
-		/* Try to find counter if possible on your platform 
-			I've only found out how to do this on Linux
-			DEBUG_THREADS changes the lock structure
-		*/
-#ifdef __linux__
-		int count = 0;
 #ifdef DEBUG_THREADS
-		if ((count = chan->lock.mutex.__data.__count))
-#else
-		if ((count = chan->lock.__data.__count))
-#endif
+		int count = 0;
+		if ((count = chan->lock.reentrancy))
 			ast_log(LOG_DEBUG, ":::=== Still have %d locks (recursive)\n", count);
 #endif
 		if (!res)
@@ -4508,13 +4500,9 @@ int ast_channel_lock(struct ast_channel *chan)
 	res = ast_mutex_lock(&chan->lock);
 
 	if (option_debug > 3) {
-#ifdef __linux__
-		int count = 0;
 #ifdef DEBUG_THREADS
-		if ((count = chan->lock.mutex.__data.__count))
-#else
-		if ((count = chan->lock.__data.__count))
-#endif
+		int count = 0;
+		if ((count = chan->lock.reentrancy))
 			ast_log(LOG_DEBUG, ":::=== Now have %d locks (recursive)\n", count);
 #endif
 		if (!res)
@@ -4544,13 +4532,9 @@ int ast_channel_trylock(struct ast_channel *chan)
 	res = ast_mutex_trylock(&chan->lock);
 
 	if (option_debug > 2) {
-#ifdef __linux__
-		int count = 0;
 #ifdef DEBUG_THREADS
-		if ((count = chan->lock.mutex.__data.__count))
-#else
-		if ((count = chan->lock.__data.__count))
-#endif
+		int count = 0;
+		if ((count = chan->lock.reentrancy))
 			ast_log(LOG_DEBUG, ":::=== Now have %d locks (recursive)\n", count);
 #endif
 		if (!res)