87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
/*
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* Copyright (C) 2014, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LATINIME_PROFILER_H
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#define LATINIME_PROFILER_H
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#ifdef FLAG_DO_PROFILE
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#include "defines.h"
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#include <ctime>
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#include <unordered_map>
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namespace latinime {
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class Profiler final {
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public:
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Profiler(const clockid_t clockId)
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: mClockId(clockId), mStartTime(getTimeInMicroSec()), mStartTimes(), mTimes(),
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mCounters() {}
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~Profiler() {
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const float totalTime =
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static_cast<float>(getTimeInMicroSec() - mStartTime) / 1000.f;
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AKLOGI("Total time is %6.3f ms.", totalTime);
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for (const auto &time : mTimes) {
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AKLOGI("(%d): Used %4.2f%%, %8.4f ms. Called %d times.", time.first,
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time.second / totalTime * 100.0f, time.second, mCounters[time.first]);
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}
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}
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void startTimer(const int id) {
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mStartTimes[id] = getTimeInMicroSec();
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}
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void endTimer(const int id) {
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mTimes[id] += static_cast<float>(getTimeInMicroSec() - mStartTimes[id]) / 1000.0f;
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mCounters[id]++;
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}
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operator bool() const { return false; }
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(Profiler);
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const clockid_t mClockId;
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int64_t mStartTime;
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std::unordered_map<int, int64_t> mStartTimes;
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std::unordered_map<int, float> mTimes;
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std::unordered_map<int, int> mCounters;
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int64_t getTimeInMicroSec() {
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timespec time;
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clock_gettime(mClockId, &time);
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return static_cast<int64_t>(time.tv_sec) * 1000000
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+ static_cast<int64_t>(time.tv_nsec) / 1000;
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}
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};
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} // namespace latinime
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#define PROF_INIT Profiler __LATINIME__PROFILER__(CLOCK_THREAD_CPUTIME_ID)
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#define PROF_TIMER_START(timer_id) __LATINIME__PROFILER__.startTimer(timer_id)
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#define PROF_TIMER_END(timer_id) __LATINIME__PROFILER__.endTimer(timer_id)
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#else // FLAG_DO_PROFILE
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#define PROF_INIT
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#define PROF_TIMER_START(timer_id)
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#define PROF_TIMER_END(timer_id)
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#endif // FLAG_DO_PROFILE
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#endif /* LATINIME_PROFILER_H */
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