1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include "perf/cpu_timer.h"
17 
18 #include <chrono>
19 #include <cstdint>
20 
21 #include <render/namespace.h>
22 
23 RENDER_BEGIN_NAMESPACE()
24 using namespace std::chrono;
25 using Clock = system_clock;
26 
Begin()27 void CpuTimer::Begin() noexcept
28 {
29     begin_ = Clock::now().time_since_epoch().count();
30 }
31 
End()32 void CpuTimer::End() noexcept
33 {
34     end_ = Clock::now().time_since_epoch().count();
35 }
36 
GetMicroseconds() const37 int64_t CpuTimer::GetMicroseconds() const noexcept
38 {
39     return (int64_t)(duration_cast<microseconds>(Clock::duration(end_) - Clock::duration(begin_)).count());
40 }
41 RENDER_END_NAMESPACE()
42