Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/livejvm/JNIHandleAccessor.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 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.livejvm; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.utilities.*; class JNIHandleAccessor { private Address addr; private ObjectHeap heap; JNIHandleAccessor(Address addr, ObjectHeap heap) { this.addr = addr; this.heap = heap; } Oop getValue() { // Accessing the contents of the JNIHandle is a double dereference Address handle = addr.getAddressAt(0); if (handle == null) return null; return heap.newOop(handle.getOopHandleAt(0)); } void setValue(Oop value) { Address handle = addr.getAddressAt(0); if (Assert.ASSERTS_ENABLED) { Assert.that(handle != null, "Must have valid global JNI handle for setting"); } handle.setOopHandleAt(0, value.getHandle()); } }