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view graal/com.oracle.max.base/src/com/sun/max/util/timer/TimerUtil.java @ 4231:d713eaf4d288
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author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Thu, 05 Jan 2012 16:09:47 -0800 |
parents | e233f5660da4 |
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/* * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.max.util.timer; import com.sun.max.profile.*; /** * This class offers various utilities for composing and using timers. */ public class TimerUtil { public static void time(Runnable runnable, Timer timer) { timer.start(); runnable.run(); timer.stop(); } public static long timeElapsed(Runnable runnable, Timer timer) { timer.start(); runnable.run(); timer.stop(); return timer.getLastElapsedTime(); } public static long timeElapsed(Runnable runnable, Clock clock) { return timeElapsed(runnable, new SingleUseTimer(clock)); } public static long getLastElapsedSeconds(Timer timer) { return (1 * timer.getLastElapsedTime()) / timer.getClock().getHZ(); } public static long getLastElapsedMilliSeconds(Timer timer) { return (1000 * timer.getLastElapsedTime()) / timer.getClock().getHZ(); } public static long getLastElapsedMicroSeconds(Timer timer) { return (1000000 * timer.getLastElapsedTime()) / timer.getClock().getHZ(); } public static long getLastElapsedNanoSeconds(Timer timer) { return (1000000000 * timer.getLastElapsedTime()) / timer.getClock().getHZ(); } public static String getHzSuffix(Clock clock) { if (clock.getHZ() == 1000) { return "ms"; } else if (clock.getHZ() == 1000000) { return "us"; } else if (clock.getHZ() == 1000000000) { return "ns"; } return "(" + clock.getHZ() + "/sec)"; } }