1 files changed, 48 insertions, 0 deletions
diff --git a/src/crimson/os/seastore/onode.h b/src/crimson/os/seastore/onode.h
new file mode 100644
index 000000000..4d7783028
--- /dev/null
+++ b/src/crimson/os/seastore/onode.h
@@ -0,0 +1,48 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <iostream>
+#include <limits>
+
+#include <boost/intrusive_ptr.hpp>
+#include <boost/smart_ptr/intrusive_ref_counter.hpp>
+
+#include "include/buffer.h"
+#include "include/denc.h"
+
+namespace crimson::os::seastore {
+
+// in-memory onode, in addition to the stuff that should be persisted to disk,
+// it may contain intrusive hooks for LRU, rw locks etc
+class Onode : public boost::intrusive_ref_counter<
+  Onode,
+  boost::thread_unsafe_counter>
+{
+public:
+  Onode(std::string_view s)
+    : payload{s}
+  {}
+  size_t size() const;
+  const std::string& get() const {
+    return payload;
+  }
+  void encode(void* buffer, size_t len);
+  DENC(Onode, v, p) {
+    DENC_START(1, 1, p);
+    denc(v.payload, p);
+    DENC_FINISH(p);
+  }
+
+private:
+  // dummy payload
+  std::string payload;
+};
+
+bool operator==(const Onode& lhs, const Onode& rhs);
+std::ostream& operator<<(std::ostream &out, const Onode &rhs);
+using OnodeRef = boost::intrusive_ptr<Onode>;
+}
+
+WRITE_CLASS_DENC(crimson::os::seastore::Onode)