mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-27 02:44:18 +00:00
3c327ac2d0
Summary: Closes https://github.com/facebook/rocksdb/pull/2589 Differential Revision: D5431502 Pulled By: siying fbshipit-source-id: 8ebf8c87883daa9daa54b2303d11ce01ab1f6f75
22 lines
750 B
C
22 lines
750 B
C
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
//
|
|
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
|
|
#ifndef PORT_LIKELY_H_
|
|
#define PORT_LIKELY_H_
|
|
|
|
#if defined(__GNUC__) && __GNUC__ >= 4
|
|
#define LIKELY(x) (__builtin_expect((x), 1))
|
|
#define UNLIKELY(x) (__builtin_expect((x), 0))
|
|
#else
|
|
#define LIKELY(x) (x)
|
|
#define UNLIKELY(x) (x)
|
|
#endif
|
|
|
|
#endif // PORT_LIKELY_H_
|