| /* |
| * Copyright (C) 2005 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "StopWatch" |
| |
| #include <utils/StopWatch.h> |
| |
| /* for PRId64 */ |
| #ifndef __STDC_FORMAT_MACROS |
| #define __STDC_FORMAT_MACROS 1 |
| #endif |
| #include <inttypes.h> |
| |
| #include <utils/Log.h> |
| |
| /*****************************************************************************/ |
| |
| namespace android { |
| |
| StopWatch::StopWatch(const char* name, int clock) : mName(name), mClock(clock) { |
| reset(); |
| } |
| |
| StopWatch::~StopWatch() |
| { |
| nsecs_t elapsed = elapsedTime(); |
| const int n = mNumLaps; |
| ALOGD("StopWatch %s (us): %" PRId64 " ", mName, ns2us(elapsed)); |
| for (int i=0 ; i<n ; i++) { |
| const nsecs_t soFar = mLaps[i].soFar; |
| const nsecs_t thisLap = mLaps[i].thisLap; |
| ALOGD(" [%d: %" PRId64 ", %" PRId64, i, ns2us(soFar), ns2us(thisLap)); |
| } |
| } |
| |
| const char* StopWatch::name() const |
| { |
| return mName; |
| } |
| |
| nsecs_t StopWatch::lap() |
| { |
| nsecs_t elapsed = elapsedTime(); |
| if (mNumLaps >= 8) { |
| elapsed = 0; |
| } else { |
| const int n = mNumLaps; |
| mLaps[n].soFar = elapsed; |
| mLaps[n].thisLap = n ? (elapsed - mLaps[n-1].soFar) : elapsed; |
| mNumLaps = n+1; |
| } |
| return elapsed; |
| } |
| |
| nsecs_t StopWatch::elapsedTime() const |
| { |
| return systemTime(mClock) - mStartTime; |
| } |
| |
| void StopWatch::reset() |
| { |
| mNumLaps = 0; |
| mStartTime = systemTime(mClock); |
| } |
| |
| |
| /*****************************************************************************/ |
| |
| }; // namespace android |
| |