Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/runtime/StackValue.java @ 210:05712c37c828
6676016: ParallelOldGC leaks memory
Summary: ensure that GCTask threads release resource and handle memory
Reviewed-by: jmasa, chrisphi
author | jcoomes |
---|---|
date | Wed, 18 Jun 2008 18:36:47 -0700 |
parents | a61af66fc99e |
children | b109e761e927 |
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/* * Copyright 2000-2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.runtime; import java.io.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.utilities.*; public class StackValue { private int type; private OopHandle handleValue; private long integerValue; public StackValue() { type = BasicType.getTConflict(); } public StackValue(OopHandle h) { handleValue = h; type = BasicType.getTObject(); } public StackValue(long i) { integerValue = i; type = BasicType.getTInt(); } /** This returns one of the "enum" values in BasicType.java */ public int getType() { return type; } public OopHandle getObject() { if (Assert.ASSERTS_ENABLED) { Assert.that(type == BasicType.getTObject(), "type check"); } return handleValue; } public long getInteger() { if (Assert.ASSERTS_ENABLED) { Assert.that(type == BasicType.getTInt(), "type check"); } return integerValue; } public boolean equals(Object arg) { if (arg == null) { return false; } if (!arg.getClass().equals(getClass())) { return false; } StackValue sv = (StackValue) arg; if (type != sv.type) { return false; } if (type == BasicType.getTObject()) { return handleValue.equals(sv.handleValue); } else if (type == BasicType.getTInt()) { return (integerValue == sv.integerValue); } else { // Conflict type (not yet used) return true; } } public int hashCode() { if (type == BasicType.getTObject()) { return handleValue.hashCode(); } else { // Returns 0 for conflict type return (int) integerValue; } } public void print() { printOn(System.out); } public void printOn(PrintStream tty) { if (type == BasicType.getTInt()) { tty.print(integerValue + " (long) " + (int) integerValue + " (int)"); } else if (type == BasicType.getTObject()) { tty.print("<" + handleValue + ">"); } else if (type == BasicType.getTConflict()) { tty.print("conflict"); } else { throw new RuntimeException("should not reach here"); } } }