| /* |
| * This file is part of the Jikes RVM project (http://jikesrvm.org). |
| * |
| * This file is licensed to You under the Eclipse Public License (EPL); |
| * You may not use this file except in compliance with the License. You |
| * may obtain a copy of the License at |
| * |
| * http://www.opensource.org/licenses/eclipse-1.0.php |
| * |
| * See the COPYRIGHT.txt file distributed with this work for information |
| * regarding copyright ownership. |
| */ |
| package org.mmtk.utility.statistics; |
| |
| import org.mmtk.utility.Log; |
| import org.mmtk.vm.VM; |
| |
| import org.vmmagic.pragma.*; |
| |
| /** |
| * This class implements a simple timer. |
| */ |
| @Uninterruptible public class Timer extends LongCounter { |
| |
| /**************************************************************************** |
| * |
| * Initialization |
| */ |
| |
| /** |
| * Constructor |
| * |
| * @param name The name to be associated with this counter |
| */ |
| public Timer(String name) { |
| this(name, true, false); |
| } |
| |
| /** |
| * Constructor |
| * |
| * @param name The name to be associated with this counter |
| * @param start True if this counter is to be implicitly started |
| * when <code>startAll()</code> is called (otherwise the counter |
| * must be explicitly started). |
| */ |
| public Timer(String name, boolean start) { |
| this(name, start, false); |
| } |
| |
| /** |
| * Constructor |
| * |
| * @param name The name to be associated with this counter |
| * @param start True if this counter is to be implicitly started |
| * when <code>startAll()</code> is called (otherwise the counter |
| * must be explicitly started). |
| * @param mergephases True if this counter does not separately |
| * report GC and Mutator phases. |
| */ |
| public Timer(String name, boolean start, boolean mergephases) { |
| super(name, start, mergephases); |
| } |
| |
| /**************************************************************************** |
| * |
| * Counter-specific methods |
| */ |
| |
| /** |
| * Get the current value for this timer |
| * |
| * @return The current value for this timer |
| */ |
| @Inline |
| protected final long getCurrentValue() { |
| return VM.statistics.nanoTime(); |
| } |
| |
| /** |
| * Print the total in microseconds |
| */ |
| final void printTotalMicro() { |
| printMicro(totalCount); |
| } |
| |
| /** |
| * Print the total in milliseconds |
| */ |
| public final void printTotalMillis() { |
| printMillis(totalCount); |
| } |
| |
| /** |
| * Print the total in seconds |
| */ |
| public final void printTotalSecs() { |
| printSecs(totalCount); |
| } |
| |
| /** |
| * Print a value (in milliseconds) |
| * |
| * @param value The value to be printed |
| */ |
| final void printValue(long value) { |
| printMillis(value); |
| } |
| |
| /** |
| * Print a value in microseconds |
| * |
| * @param value The value to be printed |
| */ |
| final void printMicro(long value) { |
| Log.write(1000 * VM.statistics.nanosToMillis(value)); |
| } |
| |
| /** |
| * Print a value in milliseconds |
| * |
| * @param value The value to be printed |
| */ |
| final void printMillis(long value) { |
| Log.write(VM.statistics.nanosToMillis(value)); |
| } |
| |
| /** |
| * Print a value in seconds |
| * |
| * @param value The value to be printed |
| */ |
| final void printSecs(long value) { |
| Log.write(VM.statistics.nanosToSecs(value)); |
| } |
| |
| /** |
| * Get the current value of the timer in milliseconds |
| */ |
| final double getTotalMillis() { |
| return VM.statistics.nanosToMillis(totalCount); |
| } |
| |
| } |
| |