1 files changed, 49 insertions, 0 deletions
diff --git a/cpp/lib/broker/AccumulatedAck.cpp b/cpp/lib/broker/AccumulatedAck.cpp
new file mode 100644
index 0000000000..a9826ba5ea
--- /dev/null
+++ b/cpp/lib/broker/AccumulatedAck.cpp
@@ -0,0 +1,49 @@
+/*
+ *
+ * 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.
+ *
+ */
+#include <AccumulatedAck.h>
+
+using std::less_equal;
+using std::bind2nd;
+using namespace qpid::broker;
+
+void AccumulatedAck::update(u_int64_t tag, bool multiple){
+    if(multiple){
+        if(tag > range) range = tag;
+        //else don't care, it is already counted
+    }else if(tag > range){
+        individual.push_back(tag);
+    }
+}
+
+void AccumulatedAck::consolidate(){
+    individual.sort();
+    //remove any individual tags that are covered by range
+    individual.remove_if(bind2nd(less_equal<u_int64_t>(), range));
+}
+
+void AccumulatedAck::clear(){
+    range = 0;
+    individual.clear();
+}
+
+bool AccumulatedAck::covers(u_int64_t tag) const{
+    return tag <= range || find(individual.begin(), individual.end(), tag) != individual.end();
+}