88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
/*
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* Copyright (C) 2005 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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#define LOG_TAG "StopWatch"
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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/* for PRId64 */
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#define __STDC_FORMAT_MACROS 1
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#include <inttypes.h>
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#include <utils/Log.h>
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#include <utils/Errors.h>
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#include <utils/StopWatch.h>
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/*****************************************************************************/
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namespace android {
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StopWatch::StopWatch(const char *name, int clock, uint32_t flags)
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: mName(name), mClock(clock), mFlags(flags)
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{
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reset();
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}
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StopWatch::~StopWatch()
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{
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nsecs_t elapsed = elapsedTime();
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const int n = mNumLaps;
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ALOGD("StopWatch %s (us): %" PRId64 " ", mName, ns2us(elapsed));
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for (int i=0 ; i<n ; i++) {
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const nsecs_t soFar = mLaps[i].soFar;
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const nsecs_t thisLap = mLaps[i].thisLap;
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ALOGD(" [%d: %" PRId64 ", %" PRId64, i, ns2us(soFar), ns2us(thisLap));
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}
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}
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const char* StopWatch::name() const
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{
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return mName;
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}
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nsecs_t StopWatch::lap()
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{
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nsecs_t elapsed = elapsedTime();
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if (mNumLaps >= 8) {
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elapsed = 0;
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} else {
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const int n = mNumLaps;
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mLaps[n].soFar = elapsed;
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mLaps[n].thisLap = n ? (elapsed - mLaps[n-1].soFar) : elapsed;
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mNumLaps = n+1;
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}
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return elapsed;
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}
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nsecs_t StopWatch::elapsedTime() const
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{
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return systemTime(mClock) - mStartTime;
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}
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void StopWatch::reset()
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{
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mNumLaps = 0;
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mStartTime = systemTime(mClock);
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}
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/*****************************************************************************/
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}; // namespace android
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