Provide method to test for empty local queue.

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@608915 13f79535-47bb-0310-9956-ffa450edef68

3 files changed, 14 insertions, 1 deletions

diff --git a/cpp/src/qpid/client/LocalQueue.cpp b/cpp/src/qpid/client/LocalQueue.cpp
index 7fbe4a053e..f44a04837b 100644
--- a/cpp/src/qpid/client/LocalQueue.cpp
+++ b/cpp/src/qpid/client/LocalQueue.cpp
@@ -47,4 +47,11 @@ Message LocalQueue::pop() {
 
 void LocalQueue::setAckPolicy(AckPolicy a) { autoAck=a; }
 
+bool LocalQueue::empty() 
+{ 
+    if (!queue)
+        throw ClosedException();
+    return queue->isEmpty(); 
+}
+
 }} // namespace qpid::client
diff --git a/cpp/src/qpid/client/LocalQueue.h b/cpp/src/qpid/client/LocalQueue.h
index 1c910bd3ee..0c958d8f24 100644
--- a/cpp/src/qpid/client/LocalQueue.h
+++ b/cpp/src/qpid/client/LocalQueue.h
@@ -42,6 +42,7 @@ class LocalQueue
      *@exception ClosedException if subscription has been closed.
      */
     Message pop();
+    bool empty();
 
     void setAckPolicy(AckPolicy);
 
diff --git a/cpp/src/qpid/sys/BlockingQueue.h b/cpp/src/qpid/sys/BlockingQueue.h
index 44c95b225d..bcd8c84276 100644
--- a/cpp/src/qpid/sys/BlockingQueue.h
+++ b/cpp/src/qpid/sys/BlockingQueue.h
@@ -99,7 +99,12 @@ public:
         Waitable::ScopedLock l(lock);
         return closed;
     }
-    
+
+    bool isEmpty() const {
+        Waitable::ScopedLock l(lock);
+        return queue.empty();
+    }    
+
   private:
 
     void queueNotify(size_t ignore) {