Mercurial > hg > graal-compiler
view graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/internal/TimerImpl.java @ 21709:3c17c0c41a6b
moved com.oracle.asm.**.test to JVMCI namespace (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 03 Jun 2015 18:33:23 +0200 |
parents | f5b549811bac |
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.internal; import static com.oracle.jvmci.debug.DebugCloseable.*; import java.lang.management.*; import java.util.concurrent.*; import com.oracle.jvmci.debug.*; public final class TimerImpl extends AccumulatedDebugValue implements DebugTimer { private static final ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); /** * Records the most recent active timer. */ private static final ThreadLocal<CloseableCounterImpl> currentTimer = new ThreadLocal<>(); static class FlatTimer extends DebugValue implements DebugTimer { private TimerImpl accm; public FlatTimer(String name, boolean conditional) { super(name + "_Flat", conditional); } @Override public String toString(long value) { return valueToString(value); } public TimeUnit getTimeUnit() { return accm.getTimeUnit(); } public DebugCloseable start() { return accm.start(); } } public TimerImpl(String name, boolean conditional) { super(name, conditional, new FlatTimer(name, conditional)); ((FlatTimer) flat).accm = this; } @Override public DebugCloseable start() { if (!isConditional() || Debug.isTimeEnabled()) { AbstractTimer result; if (threadMXBean.isCurrentThreadCpuTimeSupported()) { result = new CpuTimeTimer(this); } else { result = new SystemNanosTimer(this); } currentTimer.set(result); return result; } else { return VOID_CLOSEABLE; } } public static String valueToString(long value) { return String.format("%d.%d ms", value / 1000000, (value / 100000) % 10); } public DebugTimer getFlat() { return (FlatTimer) flat; } @Override public String toString(long value) { return valueToString(value); } public TimeUnit getTimeUnit() { return TimeUnit.NANOSECONDS; } private abstract static class AbstractTimer extends CloseableCounterImpl implements DebugCloseable { private AbstractTimer(AccumulatedDebugValue counter) { super(currentTimer.get(), counter); } @Override public void close() { super.close(); currentTimer.set(parent); } } private final class SystemNanosTimer extends AbstractTimer { public SystemNanosTimer(TimerImpl timer) { super(timer); } @Override protected long getCounterValue() { return System.nanoTime(); } } private final class CpuTimeTimer extends AbstractTimer { public CpuTimeTimer(TimerImpl timer) { super(timer); } @Override protected long getCounterValue() { return threadMXBean.getCurrentThreadCpuTime(); } } }