/usr/share/cruisecontrol-bin-2.6.1/projects/qpid-trunk/cpp/src/qpid/framing/AccumulatedAck.h

00001 /*
00002  *
00003  * Licensed to the Apache Software Foundation (ASF) under one
00004  * or more contributor license agreements.  See the NOTICE file
00005  * distributed with this work for additional information
00006  * regarding copyright ownership.  The ASF licenses this file
00007  * to you under the Apache License, Version 2.0 (the
00008  * "License"); you may not use this file except in compliance
00009  * with the License.  You may obtain a copy of the License at
00010  * 
00011  *   http://www.apache.org/licenses/LICENSE-2.0
00012  * 
00013  * Unless required by applicable law or agreed to in writing,
00014  * software distributed under the License is distributed on an
00015  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
00016  * KIND, either express or implied.  See the License for the
00017  * specific language governing permissions and limitations
00018  * under the License.
00019  *
00020  */
00021 #ifndef _AccumulatedAck_
00022 #define _AccumulatedAck_
00023 
00024 #include <algorithm>
00025 #include <functional>
00026 #include <list>
00027 #include <ostream>
00028 #include "SequenceNumber.h"
00029 #include "SequenceNumberSet.h"
00030 
00031 namespace qpid {
00032     namespace framing {
00033 
00034         struct Range
00035         {
00036             SequenceNumber start;
00037             SequenceNumber end;
00038 
00039             Range(SequenceNumber s, SequenceNumber e);
00040             bool contains(SequenceNumber i) const;
00041             bool intersect(const Range& r) const;
00042             bool merge(const Range& r);
00043             bool mergeable(const SequenceNumber& r) const;
00044         };
00049         class AccumulatedAck {
00050         public:
00054             SequenceNumber mark;
00059             std::list<Range> ranges;
00060 
00061             explicit AccumulatedAck(SequenceNumber r = SequenceNumber());
00062             void update(SequenceNumber firstTag, SequenceNumber lastTag);
00063             void consolidate();
00064             void clear();
00065             bool covers(SequenceNumber tag) const;
00066             void collectRanges(SequenceNumberSet& set) const;
00067             void update(const SequenceNumber cumulative, const SequenceNumberSet& range);
00068             void operator()(SequenceNumber first, SequenceNumber last) { update(first, last); }
00069         };
00070         std::ostream& operator<<(std::ostream&, const Range&);
00071         std::ostream& operator<<(std::ostream&, const AccumulatedAck&);
00072     }
00073 }
00074 
00075 
00076 #endif

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