--- rpl/src/rpl.h	2017/07/31 12:03:30	1.313
+++ rpl/src/rpl.h	2017/08/03 15:13:04	1.314
@@ -718,6 +718,12 @@ pid_t debug_fork();
 		pthread_self(), #mutex, mutex, __FUNCTION__, __LINE__), \
 		fflush(stdout), \
 		pthread_mutex_unlock(mutex)
+#	define pthread_mutex_trylock(mutex) uprintf("[%d-%llu] Mutex %s (%p) " \
+		"trylocking at " \
+		"%s() line #%d\n", (int) getpid(), (unsigned long long) \
+		pthread_self(), #mutex, mutex, __FUNCTION__, __LINE__), \
+		fflush(stdout), \
+		pthread_mutex_trylock(mutex)
 #endif