18bf80f4bSopenharmony_ci/*
28bf80f4bSopenharmony_ci * Copyright (c) 2024 Huawei Device Co., Ltd.
38bf80f4bSopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
48bf80f4bSopenharmony_ci * you may not use this file except in compliance with the License.
58bf80f4bSopenharmony_ci * You may obtain a copy of the License at
68bf80f4bSopenharmony_ci *
78bf80f4bSopenharmony_ci *     http://www.apache.org/licenses/LICENSE-2.0
88bf80f4bSopenharmony_ci *
98bf80f4bSopenharmony_ci * Unless required by applicable law or agreed to in writing, software
108bf80f4bSopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
118bf80f4bSopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
128bf80f4bSopenharmony_ci * See the License for the specific language governing permissions and
138bf80f4bSopenharmony_ci * limitations under the License.
148bf80f4bSopenharmony_ci */
158bf80f4bSopenharmony_ci
168bf80f4bSopenharmony_ci#include "perf/cpu_timer.h"
178bf80f4bSopenharmony_ci
188bf80f4bSopenharmony_ci#include <chrono>
198bf80f4bSopenharmony_ci#include <cstdint>
208bf80f4bSopenharmony_ci
218bf80f4bSopenharmony_ci#include <render/namespace.h>
228bf80f4bSopenharmony_ci
238bf80f4bSopenharmony_ciRENDER_BEGIN_NAMESPACE()
248bf80f4bSopenharmony_ciusing namespace std::chrono;
258bf80f4bSopenharmony_ciusing Clock = system_clock;
268bf80f4bSopenharmony_ci
278bf80f4bSopenharmony_civoid CpuTimer::Begin() noexcept
288bf80f4bSopenharmony_ci{
298bf80f4bSopenharmony_ci    begin_ = Clock::now().time_since_epoch().count();
308bf80f4bSopenharmony_ci}
318bf80f4bSopenharmony_ci
328bf80f4bSopenharmony_civoid CpuTimer::End() noexcept
338bf80f4bSopenharmony_ci{
348bf80f4bSopenharmony_ci    end_ = Clock::now().time_since_epoch().count();
358bf80f4bSopenharmony_ci}
368bf80f4bSopenharmony_ci
378bf80f4bSopenharmony_ciint64_t CpuTimer::GetMicroseconds() const noexcept
388bf80f4bSopenharmony_ci{
398bf80f4bSopenharmony_ci    return (int64_t)(duration_cast<microseconds>(Clock::duration(end_) - Clock::duration(begin_)).count());
408bf80f4bSopenharmony_ci}
418bf80f4bSopenharmony_ciRENDER_END_NAMESPACE()
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