| Josh Gao | 4602adb | 2016-11-15 18:55:47 -0800 | [diff] [blame] | 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 |