Added queue policy class for controlling when message content should be released from memory.

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@482639 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 46 insertions, 0 deletions

diff --git a/cpp/lib/broker/QueuePolicy.h b/cpp/lib/broker/QueuePolicy.h
new file mode 100644
index 0000000000..399c67d837
--- /dev/null
+++ b/cpp/lib/broker/QueuePolicy.h
@@ -0,0 +1,46 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+#ifndef _QueuePolicy_
+#define _QueuePolicy_
+
+#include <BrokerMessage.h>
+
+namespace qpid {
+    namespace broker {
+        class QueuePolicy
+        {
+            const u_int32_t maxCount;
+            const u_int64_t maxSize;
+            u_int32_t count;
+            u_int64_t size;
+            
+            bool checkCount(Message::shared_ptr& msg);
+            bool checkSize(Message::shared_ptr& msg);
+        public:
+            QueuePolicy(u_int32_t maxCount, u_int64_t maxSize);
+            void enqueued(Message::shared_ptr& msg, MessageStore* store);
+            void dequeued(Message::shared_ptr& msg, MessageStore* store);
+        };
+    }
+}
+
+
+#endif