1// 2// Copyright (C) 2015 Google, Inc. 3// 4// Licensed under the Apache License, Version 2.0 (the "License"); 5// you may not use this file except in compliance with the License. 6// You may obtain a copy of the License at: 7// 8// http://www.apache.org/licenses/LICENSE-2.0 9// 10// Unless required by applicable law or agreed to in writing, software 11// distributed under the License is distributed on an "AS IS" BASIS, 12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13// See the License for the specific language governing permissions and 14// limitations under the License. 15// 16 17#pragma once 18 19#include <mutex> 20#include <string> 21 22#include <base/macros.h> 23 24namespace util { 25 26// A simple atomic container class for std::string. 27class AtomicString final { 28 public: 29 explicit AtomicString(const std::string& str); 30 ~AtomicString() = default; 31 32 std::string Get() const; 33 void Set(const std::string& str); 34 35 private: 36 std::mutex lock_; 37 std::string str_; 38 39 DISALLOW_COPY_AND_ASSIGN(AtomicString); 40}; 41 42} // namespace util 43