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Josh Gao4602adb2016-11-15 18:55:47 -08001/*
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
29constexpr std::chrono::seconds operator"" s(unsigned long long s) {
30 return std::chrono::seconds(s);
31}
32
33constexpr std::chrono::duration<long double> operator"" s(long double s) {
34 return std::chrono::duration<long double>(s);
35}
36
37constexpr std::chrono::milliseconds operator"" ms(unsigned long long ms) {
38 return std::chrono::milliseconds(ms);
39}
40
41constexpr 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
45using namespace std::chrono_literals;
46#endif