e2ecdcfe33
Former-commit-id:a02aeb236c[formerly9f19e3f712] [formerlya02aeb236c[formerly9f19e3f712] [formerly06a8b51d6d[formerly 64fa9254b946eae7e61bbc3f513b7c3696c4f54f]]] Former-commit-id:06a8b51d6dFormer-commit-id:8e80217e59[formerly3360eb6c5f] Former-commit-id:377dcd10b9
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
/*
|
|
*
|
|
* 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 _framing_SequenceNumber_h
|
|
#define _framing_SequenceNumber_h
|
|
|
|
#include "qpid/framing/amqp_types.h"
|
|
#include <boost/operators.hpp>
|
|
#include <iosfwd>
|
|
#include "qpid/CommonImportExport.h"
|
|
|
|
namespace qpid {
|
|
namespace framing {
|
|
|
|
class Buffer;
|
|
|
|
/**
|
|
* 4-byte sequence number that 'wraps around'.
|
|
*/
|
|
class SequenceNumber : public
|
|
boost::equality_comparable<
|
|
SequenceNumber, boost::less_than_comparable<
|
|
SequenceNumber, boost::incrementable<
|
|
SequenceNumber, boost::decrementable<SequenceNumber> > > >
|
|
{
|
|
int32_t value;
|
|
|
|
public:
|
|
SequenceNumber(uint32_t v=0) : value(v) {}
|
|
|
|
SequenceNumber& operator++() { ++value; return *this; }
|
|
SequenceNumber& operator--() { --value; return *this; }
|
|
bool operator==(const SequenceNumber& other) const { return value == other.value; }
|
|
bool operator<(const SequenceNumber& other) const { return (value - other.value) < 0; }
|
|
uint32_t getValue() const { return uint32_t(value); }
|
|
operator uint32_t() const { return uint32_t(value); }
|
|
|
|
void encode(Buffer& buffer) const;
|
|
void decode(Buffer& buffer);
|
|
uint32_t encodedSize() const;
|
|
|
|
template <class S> void serialize(S& s) { s(value); }
|
|
|
|
friend inline int32_t operator-(const SequenceNumber& a, const SequenceNumber& b);
|
|
};
|
|
|
|
inline int32_t operator-(const SequenceNumber& a, const SequenceNumber& b) {
|
|
return int32_t(a.value - b.value);
|
|
}
|
|
|
|
struct Window
|
|
{
|
|
SequenceNumber hwm;
|
|
SequenceNumber lwm;
|
|
};
|
|
|
|
QPID_COMMON_EXTERN std::ostream& operator<<(std::ostream& o, const SequenceNumber& n);
|
|
|
|
}} // namespace qpid::framing
|
|
|
|
|
|
#endif
|