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/*
* Copyright (C) 2012 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.
*/
package com.android.contacts.common.util;
import com.android.dialer.common.LogUtil;
import java.util.ArrayList;
/** A {@link StopWatch} records start, laps and stop, and print them to logcat. */
public class StopWatch {
private final String mLabel;
private final ArrayList<Long> mTimes = new ArrayList<>();
private final ArrayList<String> mLapLabels = new ArrayList<>();
private StopWatch(String label) {
mLabel = label;
lap("");
}
/** Create a new instance and start it. */
public static StopWatch start(String label) {
return new StopWatch(label);
}
/** Record a lap. */
public void lap(String lapLabel) {
mTimes.add(System.currentTimeMillis());
mLapLabels.add(lapLabel);
}
/** Stop it and log the result, if the total time >= {@code timeThresholdToLog}. */
public void stopAndLog(String TAG, int timeThresholdToLog) {
lap("");
final long start = mTimes.get(0);
final long stop = mTimes.get(mTimes.size() - 1);
final long total = stop - start;
if (total < timeThresholdToLog) {
return;
}
final StringBuilder sb = new StringBuilder();
sb.append(mLabel);
sb.append(",");
sb.append(total);
sb.append(": ");
long last = start;
for (int i = 1; i < mTimes.size(); i++) {
final long current = mTimes.get(i);
sb.append(mLapLabels.get(i));
sb.append(",");
sb.append((current - last));
sb.append(" ");
last = current;
}
LogUtil.v(TAG, sb.toString());
}
}
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