| /* |
| * |
| * 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 _AccumulatedAck_ |
| #define _AccumulatedAck_ |
| |
| #include <algorithm> |
| #include <functional> |
| #include <list> |
| #include <ostream> |
| #include "qpid/framing/SequenceNumber.h" |
| #include "qpid/framing/SequenceNumberSet.h" |
| #include "qpid/CommonImportExport.h" |
| |
| namespace qpid { |
| namespace framing { |
| |
| struct QPID_COMMON_CLASS_EXTERN Range |
| { |
| SequenceNumber start; |
| SequenceNumber end; |
| |
| Range(SequenceNumber s, SequenceNumber e); |
| bool contains(SequenceNumber i) const; |
| bool intersect(const Range& r) const; |
| bool merge(const Range& r); |
| bool mergeable(const SequenceNumber& r) const; |
| }; |
| /** |
| * Keeps an accumulated record of acknowledged messages (by delivery |
| * tag). |
| */ |
| class QPID_COMMON_CLASS_EXTERN AccumulatedAck { |
| public: |
| /** |
| * Everything up to this value has been acknowledged. |
| */ |
| SequenceNumber mark; |
| /** |
| * List of individually acknowledged messages greater than the |
| * 'mark'. |
| */ |
| std::list<Range> ranges; |
| |
| QPID_COMMON_EXTERN explicit AccumulatedAck(SequenceNumber r = SequenceNumber()); |
| QPID_COMMON_EXTERN void update(SequenceNumber firstTag, SequenceNumber lastTag); |
| QPID_COMMON_EXTERN void consolidate(); |
| QPID_COMMON_EXTERN void clear(); |
| QPID_COMMON_EXTERN bool covers(SequenceNumber tag) const; |
| void collectRanges(SequenceNumberSet& set) const; |
| QPID_COMMON_EXTERN void update(const SequenceNumber cumulative, const SequenceNumberSet& range); |
| void operator()(SequenceNumber first, SequenceNumber last) { update(first, last); } |
| }; |
| QPID_COMMON_EXTERN std::ostream& operator<<(std::ostream&, const Range&); |
| QPID_COMMON_EXTERN std::ostream& operator<<(std::ostream&, const AccumulatedAck&); |
| } |
| } |
| |
| |
| #endif |