Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/compiler/OopMap.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 | c18cbe5936b8 |
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/* * Copyright 2000-2004 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.compiler; import java.util.*; import sun.jvm.hotspot.code.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; public class OopMap extends VMObject { private static CIntegerField pcOffsetField; private static CIntegerField omvCountField; private static CIntegerField omvDataSizeField; private static AddressField omvDataField; private static AddressField compressedWriteStreamField; // This is actually a field inside class CompressedStream private static AddressField compressedStreamBufferField; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static void initialize(TypeDataBase db) { Type type = db.lookupType("OopMap"); pcOffsetField = type.getCIntegerField("_pc_offset"); omvCountField = type.getCIntegerField("_omv_count"); omvDataSizeField = type.getCIntegerField("_omv_data_size"); omvDataField = type.getAddressField("_omv_data"); compressedWriteStreamField = type.getAddressField("_write_stream"); type = db.lookupType("CompressedStream"); compressedStreamBufferField = type.getAddressField("_buffer"); } public OopMap(Address addr) { super(addr); } public long getOffset() { return pcOffsetField.getValue(addr); } //-------------------------------------------------------------------------------- // Internals only below this point // // Accessors -- package private for now Address getOMVData() { return omvDataField.getValue(addr); } long getOMVDataSize() { return omvDataSizeField.getValue(addr); } long getOMVCount() { return omvCountField.getValue(addr); } CompressedWriteStream getWriteStream() { Address wsAddr = compressedWriteStreamField.getValue(addr); if (wsAddr == null) { return null; } Address bufferAddr = compressedStreamBufferField.getValue(wsAddr); if (bufferAddr == null) { return null; } return new CompressedWriteStream(bufferAddr); } }