Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/runtime/VMObject.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author | coleenp |
---|---|
date | Sun, 13 Apr 2008 17:43:42 -0400 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2000-2002 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 sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.types.*; /** This is a base class for all VM runtime objects which wrap Addresses. The rationale is that without this in place, every class would have to implement equals() and hashCode() with boilerplate code, a practice which is inherently error-prone. */ public class VMObject { protected Address addr; /** All of the objects have this as their constructor's signature anyway */ public VMObject(Address addr) { this.addr = addr; } public String toString() { return getClass().getName() + "@" + addr; } public boolean equals(Object arg) { if (arg == null) { return false; } if (!getClass().equals(arg.getClass())) { return false; } VMObject obj = (VMObject) arg; if (!addr.equals(obj.addr)) { return false; } return true; } public int hashCode() { return addr.hashCode(); } public Address getAddress() { return addr; } }