Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/compiler/OopMapStream.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 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 sun.jvm.hotspot.code.*; public class OopMapStream { private CompressedReadStream stream; private OopMap oopMap; private int mask; private int size; private int position; private OopMapValue omv; private boolean omvValid; public OopMapStream(OopMap oopMap) { this(oopMap, (OopMapValue.OopTypes[]) null); } public OopMapStream(OopMap oopMap, OopMapValue.OopTypes type) { this(oopMap, (OopMapValue.OopTypes[]) null); mask = type.getValue(); } public OopMapStream(OopMap oopMap, OopMapValue.OopTypes[] types) { if (oopMap.getOMVData() == null) { stream = new CompressedReadStream(oopMap.getWriteStream().getBuffer()); } else { stream = new CompressedReadStream(oopMap.getOMVData()); } mask = computeMask(types); size = (int) oopMap.getOMVCount(); position = 0; omv = new OopMapValue(); omvValid = false; } public boolean isDone() { if (!omvValid) { findNext(); } return !omvValid; } public void next() { findNext(); } public OopMapValue getCurrent() { return omv; } //-------------------------------------------------------------------------------- // Internals only below this point // private int computeMask(OopMapValue.OopTypes[] types) { mask = 0; if (types != null) { for (int i = 0; i < types.length; i++) { mask |= types[i].getValue(); } } return mask; } private void findNext() { while (position++ < size) { omv.readFrom(stream); if ((omv.getType().getValue() & mask) > 0) { omvValid = true; return; } } omvValid = false; } }