// Copyright (c) 2013, Facebook, Inc. All rights reserved.// This source code is licensed under the BSD-style license found in the// LICENSE file in the root directory of this source tree. An additional grant// of patent rights can be found in the PATENTS file in the same directory.//#pragma once#include "rocksdb/perf_level.h"namespacerocksdb{#if defined(IOS_CROSS_COMPILE)externPerfLevelperf_level;#elseextern__threadPerfLevelperf_level;#endif}// namespace rocksdb