1 /* 2 * Copyright (C) 2016 The Android Open Source Project 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 <chrono> 20 21 #if defined(_WIN32) 22 // We don't have C++14 on Windows yet. 23 // Reimplement std::chrono_literals ourselves until we do. 24 25 // Silence the following warning (which gets promoted to an error): 26 // error: literal operator suffixes not preceded by _ are reserved for future standardization 27 #pragma GCC system_header 28 29 constexpr std::chrono::seconds operator"" s(unsigned long long s) { 30 return std::chrono::seconds(s); 31 } 32 33 constexpr std::chrono::duration<long double> operator"" s(long double s) { 34 return std::chrono::duration<long double>(s); 35 } 36 37 constexpr std::chrono::milliseconds operator"" ms(unsigned long long ms) { 38 return std::chrono::milliseconds(ms); 39 } 40 41 constexpr std::chrono::duration<long double, std::milli> operator"" ms(long double ms) { 42 return std::chrono::duration<long double, std::milli>(ms); 43 } 44 #else 45 using namespace std::chrono_literals; 46 #endif 47
