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1 | /* |
2 | * This file is open source software, licensed to you under the terms | |
3 | * of the Apache License, Version 2.0 (the "License"). See the NOTICE file | |
4 | * distributed with this work for additional information regarding copyright | |
5 | * ownership. You may not use this file except in compliance with the License. | |
6 | * | |
7 | * You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, | |
12 | * software distributed under the License is distributed on an | |
13 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
14 | * KIND, either express or implied. See the License for the | |
15 | * specific language governing permissions and limitations | |
16 | * under the License. | |
17 | */ | |
18 | /* | |
19 | * Copyright (C) 2018 ScyllaDB | |
20 | */ | |
21 | ||
22 | #pragma once | |
23 | ||
24 | #include <chrono> | |
25 | #include <time.h> | |
26 | ||
27 | namespace seastar { | |
28 | ||
29 | class thread_cputime_clock { | |
30 | public: | |
31 | using rep = int64_t; | |
32 | using period = std::chrono::nanoseconds::period; | |
33 | using duration = std::chrono::duration<rep, period>; | |
34 | using time_point = std::chrono::time_point<thread_cputime_clock, duration>; | |
35 | public: | |
36 | static time_point now() { | |
37 | using namespace std::chrono_literals; | |
38 | ||
39 | struct timespec tp; | |
9f95a23c | 40 | [[gnu::unused]] auto ret = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp); |
11fdf7f2 TL |
41 | assert(ret == 0); |
42 | return time_point(tp.tv_nsec * 1ns + tp.tv_sec * 1s); | |
43 | } | |
44 | }; | |
45 | ||
46 | } | |
47 |