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Diffstat (limited to 'security/sandbox/chromium/base/move.h')
-rw-r--r-- | security/sandbox/chromium/base/move.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/security/sandbox/chromium/base/move.h b/security/sandbox/chromium/base/move.h new file mode 100644 index 000000000..0af416e00 --- /dev/null +++ b/security/sandbox/chromium/base/move.h @@ -0,0 +1,57 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef BASE_MOVE_H_ +#define BASE_MOVE_H_ + +#include <utility> + +#include "base/compiler_specific.h" +#include "base/macros.h" +#include "build/build_config.h" + +// TODO(crbug.com/566182): DEPRECATED! +// Use DISALLOW_COPY_AND_ASSIGN instead, or if your type will be used in +// Callbacks, use DISALLOW_COPY_AND_ASSIGN_WITH_MOVE_FOR_BIND instead. +#define MOVE_ONLY_TYPE_FOR_CPP_03(type) \ + DISALLOW_COPY_AND_ASSIGN_WITH_MOVE_FOR_BIND(type) + +// A macro to disallow the copy constructor and copy assignment functions. +// This should be used in the private: declarations for a class. +// +// Use this macro instead of DISALLOW_COPY_AND_ASSIGN if you want to pass +// ownership of the type through a base::Callback without heap-allocating it +// into a scoped_ptr. The class must define a move constructor and move +// assignment operator to make this work. +// +// This version of the macro adds a Pass() function and a cryptic +// MoveOnlyTypeForCPP03 typedef for the base::Callback implementation to use. +// See IsMoveOnlyType template and its usage in base/callback_internal.h +// for more details. +// TODO(crbug.com/566182): Remove this macro and use DISALLOW_COPY_AND_ASSIGN +// everywhere instead. +#if defined(OS_ANDROID) || defined(OS_LINUX) || defined(OS_MACOSX) +#define DISALLOW_COPY_AND_ASSIGN_WITH_MOVE_FOR_BIND(type) \ + private: \ + type(const type&) = delete; \ + void operator=(const type&) = delete; \ + \ + public: \ + typedef void MoveOnlyTypeForCPP03; \ + \ + private: +#else +#define DISALLOW_COPY_AND_ASSIGN_WITH_MOVE_FOR_BIND(type) \ + private: \ + type(const type&) = delete; \ + void operator=(const type&) = delete; \ + \ + public: \ + type&& Pass() WARN_UNUSED_RESULT { return std::move(*this); } \ + typedef void MoveOnlyTypeForCPP03; \ + \ + private: +#endif + +#endif // BASE_MOVE_H_ |