From: Samuel Just <sjust@redhat.com>
Date: Tue, 20 Dec 2016 23:04:49 +0000 (-0800)
Subject: src/include: add scope_guard.h
X-Git-Tag: v12.0.0~306^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=9c547076d70e4350d259276204b5f65bbeb88bdc;p=ceph.git

src/include: add scope_guard.h

Signed-off-by: Samuel Just <sjust@redhat.com>
---

diff --git a/src/include/scope_guard.h b/src/include/scope_guard.h
new file mode 100644
index 000000000000..0d06ce93618f
--- /dev/null
+++ b/src/include/scope_guard.h
@@ -0,0 +1,37 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2016 Red Hat
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#ifndef SCOPE_GUARD
+#define SCOPE_GUARD
+
+template <typename F>
+struct scope_guard {
+  F f;
+  scope_guard() = delete;
+  scope_guard(const scope_guard &) = delete;
+  scope_guard(scope_guard &&) = default;
+  scope_guard & operator=(const scope_guard &) = delete;
+  scope_guard & operator=(scope_guard &&) = default;
+  scope_guard(F &&f) : f(std::move(f)) {}
+  ~scope_guard() {
+    f();
+  }
+};
+
+template <typename F>
+scope_guard<F> make_scope_guard(F &&f) {
+  return scope_guard<F>(std::forward<F>(f));
+}
+
+#endif