| /******************************************************************************* |
| * Copyright (c) 2002, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.cheatsheets; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.Platform; |
| |
| public class CheatSheetStopWatch { |
| private static CheatSheetStopWatch stopWatch = null; |
| |
| private Map<String, Entry> table; |
| |
| private CheatSheetStopWatch() { |
| |
| } |
| |
| public static CheatSheetStopWatch getInstance() { |
| if(stopWatch == null) { |
| stopWatch = new CheatSheetStopWatch(); |
| } |
| |
| return stopWatch; |
| } |
| |
| public void start(String key) { |
| |
| Entry entry = getEntry(key); |
| if (entry == null) { |
| entry = new Entry(); |
| putEntry(key, entry); |
| } else { |
| resetEntry(entry); |
| } |
| |
| entry.start = System.currentTimeMillis(); |
| } |
| |
| public void stop(String key) { |
| Entry entry = getEntry(key); |
| entry.stop = System.currentTimeMillis(); |
| } |
| |
| public long totalElapsedTime(String key) { |
| Entry entry = getEntry(key); |
| return entry.stop - entry.start; |
| } |
| |
| public void lapTime(String key) { |
| Entry entry = getEntry(key); |
| if(entry.currentLap == -1) { |
| entry.previousLap = entry.start; |
| } else { |
| entry.previousLap = entry.currentLap; |
| } |
| entry.currentLap = System.currentTimeMillis(); |
| } |
| |
| public long elapsedTime(String key) { |
| Entry entry = getEntry(key); |
| return entry.currentLap - entry.previousLap; |
| } |
| |
| /** |
| * Contains the data for an entry in the stopwatch. |
| */ |
| private static class Entry { |
| protected long start = -1; |
| protected long stop = -1; |
| protected long currentLap = -1; |
| protected long previousLap = -1; |
| } |
| |
| private Entry getEntry(String key) { |
| return getTable().get(key); |
| } |
| |
| private void putEntry(String key, Entry entry) { |
| getTable().put(key, entry); |
| } |
| |
| private void resetEntry(Entry entry) { |
| entry.start = -1; |
| entry.stop = -1; |
| entry.currentLap = -1; |
| entry.previousLap = -1; |
| } |
| |
| private Map<String, Entry> getTable() { |
| if (table == null) { |
| table = new HashMap<>(10); |
| } |
| return table; |
| } |
| |
| |
| public static boolean isTracing() { |
| if (CheatSheetPlugin.getPlugin().isDebugging()) { |
| String traceTimes = Platform.getDebugOption("org.eclipse.ui.cheatsheets/trace/creation/times"); //$NON-NLS-1$ |
| if (traceTimes != null && traceTimes.equalsIgnoreCase("true")) { //$NON-NLS-1$ |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static void startStopWatch(String key) { |
| if(isTracing()) { |
| getInstance().start(key); |
| } |
| } |
| |
| public static void printTotalTime(String key, String message) { |
| if(isTracing()) { |
| getInstance().stop(key); |
| System.out.print(message); |
| System.out.println(getInstance().totalElapsedTime(key)); |
| } |
| } |
| |
| public static void printLapTime(String key, String message) { |
| if(isTracing()) { |
| getInstance().lapTime(key); |
| System.out.print(message); |
| System.out.println(getInstance().elapsedTime(key)); |
| } |
| } |
| } |