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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef __CEPH_OS_SEQUENCERPOSITION_H
#define __CEPH_OS_SEQUENCERPOSITION_H
#include "include/types.h"
#include "include/cmp.h"
#include "include/encoding.h"
#include "common/Formatter.h"
#include <ostream>
/**
* transaction and op offset
*/
struct SequencerPosition {
uint64_t seq; ///< seq
uint32_t trans; ///< transaction in that seq (0-based)
uint32_t op; ///< op in that transaction (0-based)
SequencerPosition(uint64_t s=0, int32_t t=0, int32_t o=0) : seq(s), trans(t), op(o) {}
void encode(bufferlist& bl) const {
ENCODE_START(1, 1, bl);
::encode(seq, bl);
::encode(trans, bl);
::encode(op, bl);
ENCODE_FINISH(bl);
}
void decode(bufferlist::iterator& p) {
DECODE_START(1, p);
::decode(seq, p);
::decode(trans, p);
::decode(op, p);
DECODE_FINISH(p);
}
void dump(Formatter *f) const {
f->dump_unsigned("seq", seq);
f->dump_unsigned("trans", trans);
f->dump_unsigned("op", op);
}
static void generate_test_instances(list<SequencerPosition*>& o) {
o.push_back(new SequencerPosition);
o.push_back(new SequencerPosition(1, 2, 3));
o.push_back(new SequencerPosition(4, 5, 6));
}
};
WRITE_CLASS_ENCODER(SequencerPosition)
inline ostream& operator<<(ostream& out, const SequencerPosition& t) {
return out << t.seq << "." << t.trans << "." << t.op;
}
WRITE_EQ_OPERATORS_3(SequencerPosition, seq, trans, op)
WRITE_CMP_OPERATORS_3(SequencerPosition, seq, trans, op)
#endif
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