Mercurial > hg > truffle
view graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/DebugTimer.java @ 21765:a7a1b9b65bce
Small improvement and clean up of InstanceOfNode.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 07 Jun 2015 00:47:10 +0200 |
parents | b1530a6cce8c |
children |
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/* * Copyright (c) 2012, 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.oracle.jvmci.debug; import java.util.concurrent.*; /** * A timer for some activity of interest. A timer should be deployed using the try-with-resources * pattern: * * <pre> * try (TimerCloseable a = timer.start()) { * // the code to time * } * </pre> */ public interface DebugTimer { /** * Starts this timer if timing is {@linkplain Debug#isTimeEnabled() enabled} or this is an * {@linkplain #isConditional() unconditional} timer. * * @return an object that must be closed once the activity has completed to add the elapsed time * since this call to the total for this timer */ DebugCloseable start(); /** * Sets a flag determining if this timer is only enabled if timing is * {@link Debug#isTimeEnabled() enabled}. */ void setConditional(boolean flag); /** * Determines if this timer is only enabled if timing is {@link Debug#isTimeEnabled() enabled}. */ boolean isConditional(); /** * Gets the current value of this timer. */ long getCurrentValue(); /** * Gets the time unit of this timer. */ TimeUnit getTimeUnit(); /** * Gets the timer recording the amount time spent within a timed scope minus the time spent in * any nested timed scopes. * * @return null if this timer does not support flat timing */ default DebugTimer getFlat() { return null; } }