1 files changed, 59 insertions, 0 deletions
diff --git a/src/os/filestore/SequencerPosition.h b/src/os/filestore/SequencerPosition.h
new file mode 100644
index 000000000..789854317
--- /dev/null
+++ b/src/os/filestore/SequencerPosition.h
@@ -0,0 +1,59 @@
+// -*- 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(ceph::buffer::list& bl) const {
+    ENCODE_START(1, 1, bl);
+    encode(seq, bl);
+    encode(trans, bl);
+    encode(op, bl);
+    ENCODE_FINISH(bl);
+  }
+  void decode(ceph::buffer::list::const_iterator& p) {
+    DECODE_START(1, p);
+    decode(seq, p);
+    decode(trans, p);
+    decode(op, p);
+    DECODE_FINISH(p);
+  }
+  void dump(ceph::Formatter *f) const {
+    f->dump_unsigned("seq", seq);
+    f->dump_unsigned("trans", trans);
+    f->dump_unsigned("op", op);
+  }
+  static void generate_test_instances(std::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 std::ostream& operator<<(std::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