| 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 |