1 files changed, 57 insertions, 0 deletions
diff --git a/src/journal/Future.h b/src/journal/Future.h
new file mode 100644
index 000000000..ba835b353
--- /dev/null
+++ b/src/journal/Future.h
@@ -0,0 +1,57 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_JOURNAL_FUTURE_H
+#define CEPH_JOURNAL_FUTURE_H
+
+#include <iosfwd>
+#include <string>
+
+#include "include/ceph_assert.h"
+#include "include/int_types.h"
+#include "common/ref.h"
+
+class Context;
+
+namespace journal {
+
+class FutureImpl;
+
+class Future {
+public:
+  Future();
+  Future(const Future&);
+  Future& operator=(const Future&);
+  Future(Future&&);
+  Future& operator=(Future&&);
+  Future(ceph::ref_t<FutureImpl> future_impl);
+  ~Future();
+
+  bool is_valid() const {
+    return bool(m_future_impl);
+  }
+
+  void flush(Context *on_safe);
+  void wait(Context *on_safe);
+
+  bool is_complete() const;
+  int get_return_value() const;
+
+private:
+  friend class Journaler;
+  friend std::ostream& operator<<(std::ostream&, const Future&);
+
+  const auto& get_future_impl() const {
+    return m_future_impl;
+  }
+
+  ceph::ref_t<FutureImpl> m_future_impl;
+};
+
+std::ostream &operator<<(std::ostream &os, const Future &future);
+
+} // namespace journal
+
+using journal::operator<<;
+
+#endif // CEPH_JOURNAL_FUTURE_H