Mercurial > hg > truffle
view truffle/com.oracle.truffle.object/src/com/oracle/truffle/object/DebugCounter.java @ 22548:6b76a24fffbd default tip
Use all variables: a, b, u,v and x, y
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Thu, 14 Jan 2016 14:20:57 +0100 |
parents | c3ea80aa5762 |
children |
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/* * Copyright (c) 2014, 2014, 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.truffle.object; import java.io.PrintStream; import java.util.ArrayList; import java.util.concurrent.atomic.AtomicLong; public abstract class DebugCounter { private DebugCounter() { } public abstract long get(); public abstract void inc(); public static DebugCounter create(String name) { return ObjectStorageOptions.DebugCounters ? DebugCounterImpl.createImpl(name) : Dummy.INSTANCE; } public static void dumpCounters() { if (ObjectStorageOptions.DebugCounters) { DebugCounterImpl.dumpCounters(System.out); } } private static final class DebugCounterImpl extends DebugCounter { private static final ArrayList<DebugCounter> allCounters = new ArrayList<>(); private final String name; private final AtomicLong value; private DebugCounterImpl(String name) { this.name = name; this.value = new AtomicLong(); allCounters.add(this); } private static DebugCounter createImpl(String name) { return new DebugCounterImpl(name); } @Override public long get() { return value.get(); } @Override public void inc() { value.incrementAndGet(); } @Override public String toString() { return name + ": " + get(); } private static void dumpCounters(PrintStream out) { for (DebugCounter counter : allCounters) { out.println(counter); } } } private static final class Dummy extends DebugCounter { static final DebugCounter INSTANCE = new Dummy(); private Dummy() { } @Override public long get() { return 0; } @Override public void inc() { } } }