QPID-1560: add support for a qpid.exclusive-binding option on direct exchange that causes the binding specified to be the only one for the given key. I.e. if there is already a binding at this exchange with this key it will be atomically updated to bind the new queue.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@732297 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 12 insertions, 0 deletions

diff --git a/cpp/src/qpid/sys/CopyOnWriteArray.h b/cpp/src/qpid/sys/CopyOnWriteArray.h
index c5bdcc0942..a09ee9d441 100644
--- a/cpp/src/qpid/sys/CopyOnWriteArray.h
+++ b/cpp/src/qpid/sys/CopyOnWriteArray.h
@@ -64,6 +64,18 @@ public:
         }
     }
 
+    bool clear()
+    {
+        Mutex::ScopedLock l(lock);
+        if (array && !array->empty()) {
+            ArrayPtr copy;
+            array = copy;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
     template <class F>
     bool add_unless(T& t, F f)
     {