Index: libcfa/src/concurrency/monitor.hfa
===================================================================
--- libcfa/src/concurrency/monitor.hfa	(revision 09da82dda65553a9f7ddeef8893821d2a45a2a87)
+++ libcfa/src/concurrency/monitor.hfa	(revision 1f58c629c58ef0b1356aa37341257e00dab6a994)
@@ -132,7 +132,8 @@
 
               void wait        ( condition & this, uintptr_t user_info = 0 );
+static inline bool is_empty    ( condition & this ) { return this.blocked.head == 1p; }
               bool signal      ( condition & this );
               bool signal_block( condition & this );
-static inline bool is_empty    ( condition & this ) { return this.blocked.head == 1p; }
+static inline bool signal_all  ( condition & this ) { bool ret = false; while(!is_empty(this)) { ret = signal(this) || ret; } return ret; }
          uintptr_t front       ( condition & this );