void vlc_trace (const char *fn, const char *file, unsigned line);
#define vlc_backtrace() vlc_trace(__func__, __FILE__, __LINE__)
+#if defined (LIBVLC_USE_PTHREAD) && !defined (NDEBUG)
+# define vlc_assert_locked( m ) \
+ assert (pthread_mutex_lock (m) == EDEADLK)
+#else
+# define vlc_assert_locked( m ) (void)m
+#endif
+
/*
* CPU capabilities
*/