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