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127 lines
3.6 KiB
127 lines
3.6 KiB
/*
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* Copyright 2017 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 HDR_PLUS_PROFILER_H
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#define HDR_PLUS_PROFILER_H
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#ifndef ENABLE_HDRPLUS_PROFILER
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#define ENABLE_HDRPLUS_PROFILER 0
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#endif
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#if !ENABLE_HDRPLUS_PROFILER
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// If profiler is not enabled, make every macro a noop
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#define DECLARE_PROFILER_TIMER(_var, _description)
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#define START_PROFILER_TIMER(_var) do {} while(0)
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#define END_PROFILER_TIMER(_var) do {} while(0)
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#define SCOPE_PROFILER_TIMER(_description) do {} while(0)
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#else
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#include <string>
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/*
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* Declare a profiler timer.
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*
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* _var is the variable that will be declared as a timer.
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* _description is the description for this timer. It will be used when logging the timer duration.
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*/
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#define DECLARE_PROFILER_TIMER(_var, _description) pbcamera::TimerLogger _var = {_description}
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/*
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* Start a timer.
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*
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* _var is a timer declared with DECALRE_PROFILER_TIMER.
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*/
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#define START_PROFILER_TIMER(_var) ((_var).start())
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/*
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* End a timer and log the duration since last start.
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*
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* _var is a timer declared with DECALRE_PROFILER_TIMER.
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*/
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#define END_PROFILER_TIMER(_var) ((_var).end())
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/*
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* Declare a scope timer that starts now and ends when it goes out of scope.
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*
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* __description is the description for this timer. It will be used when logging the timer duration.
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*/
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#define SCOPE_PROFILER_TIMER(_description) pbcamera::ScopeTimerLogger _timer(_description)
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namespace pbcamera {
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#define TIMER_TAG "[PROFILE_TIMER]"
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/**
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* TimerLogger provides a timer to log the duration between start() and end().
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*/
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class TimerLogger {
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public:
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TimerLogger(const char *name) : mName(name), mInvalid(true) {};
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// Start the timer.
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void start() {
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mInvalid = (clock_gettime(kClockId, &mStartTime) != 0);
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}
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// End the timer and log the duration since last start.
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void end() {
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if (mInvalid) {
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ALOGE("%s <%s> start time is invalid.", TIMER_TAG, mName.c_str());
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return;
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}
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struct timespec endTime;
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mInvalid = (clock_gettime(kClockId, &endTime) != 0);
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if (mInvalid) {
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ALOGE("%s <%s> end time is invalid.", TIMER_TAG, mName.c_str());
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return;
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}
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int64_t startNs = static_cast<int64_t>(mStartTime.tv_sec) * kNsPerSec + mStartTime.tv_nsec;
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int64_t endNs = static_cast<int64_t>(endTime.tv_sec) * kNsPerSec + endTime.tv_nsec;
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ALOGI("%s <%s> took %f ms.", TIMER_TAG, mName.c_str(),
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static_cast<float>(endNs - startNs) / kNsPerMs);
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}
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private:
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const static int64_t kNsPerSec = 1000000000;
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const static int64_t kNsPerMs = 1000000;
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const static clockid_t kClockId = CLOCK_BOOTTIME;
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std::string mName;
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struct timespec mStartTime;
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bool mInvalid;
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};
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/**
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* ScopeTimerLogger provides a timer to log the duration of the instance lifetime.
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*/
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class ScopeTimerLogger {
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public:
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ScopeTimerLogger(const char *name) : mTimerLogger(name) { mTimerLogger.start(); };
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virtual ~ScopeTimerLogger() { mTimerLogger.end(); };
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private:
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TimerLogger mTimerLogger;
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};
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} // namespace pbcamera
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#endif // !ENABLE_HDRPLUS_PROFILER
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#endif // HDR_PLUS_PROFILER_H
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