Mercurial > hg > graal-compiler
view agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/G1CollectedHeap.java @ 6010:720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
Summary: Change the type of fields / variables / etc. that represent region counts and indeces from size_t to uint.
Reviewed-by: iveresov, brutisso, jmasa, jwilhelm
author | tonyp |
---|---|
date | Wed, 18 Apr 2012 07:21:15 -0400 |
parents | 0b3d1ec6eaee |
children | 58fc1b1523dc |
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/* * Copyright (c) 2011, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.gc_implementation.g1; import java.util.Iterator; import java.util.Observable; import java.util.Observer; import sun.jvm.hotspot.debugger.Address; import sun.jvm.hotspot.gc_interface.CollectedHeapName; import sun.jvm.hotspot.memory.MemRegion; import sun.jvm.hotspot.memory.SharedHeap; import sun.jvm.hotspot.memory.SpaceClosure; import sun.jvm.hotspot.runtime.VM; import sun.jvm.hotspot.runtime.VMObjectFactory; import sun.jvm.hotspot.types.AddressField; import sun.jvm.hotspot.types.CIntegerField; import sun.jvm.hotspot.types.Type; import sun.jvm.hotspot.types.TypeDataBase; // Mirror class for G1CollectedHeap. public class G1CollectedHeap extends SharedHeap { // HeapRegionSeq _seq; static private long hrsFieldOffset; // MemRegion _g1_committed; static private long g1CommittedFieldOffset; // size_t _summary_bytes_used; static private CIntegerField summaryBytesUsedField; // G1MonitoringSupport* _g1mm; static private AddressField g1mmField; // MasterOldRegionSet _old_set; static private long oldSetFieldOffset; // MasterHumongousRegionSet _humongous_set; static private long humongousSetFieldOffset; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } static private synchronized void initialize(TypeDataBase db) { Type type = db.lookupType("G1CollectedHeap"); hrsFieldOffset = type.getField("_hrs").getOffset(); g1CommittedFieldOffset = type.getField("_g1_committed").getOffset(); summaryBytesUsedField = type.getCIntegerField("_summary_bytes_used"); g1mmField = type.getAddressField("_g1mm"); oldSetFieldOffset = type.getField("_old_set").getOffset(); humongousSetFieldOffset = type.getField("_humongous_set").getOffset(); } public long capacity() { Address g1CommittedAddr = addr.addOffsetTo(g1CommittedFieldOffset); MemRegion g1Committed = new MemRegion(g1CommittedAddr); return g1Committed.byteSize(); } public long used() { return summaryBytesUsedField.getValue(addr); } public long n_regions() { return hrs().length(); } private HeapRegionSeq hrs() { Address hrsAddr = addr.addOffsetTo(hrsFieldOffset); return (HeapRegionSeq) VMObjectFactory.newObject(HeapRegionSeq.class, hrsAddr); } public G1MonitoringSupport g1mm() { Address g1mmAddr = g1mmField.getValue(addr); return (G1MonitoringSupport) VMObjectFactory.newObject(G1MonitoringSupport.class, g1mmAddr); } public HeapRegionSetBase oldSet() { Address oldSetAddr = addr.addOffsetTo(oldSetFieldOffset); return (HeapRegionSetBase) VMObjectFactory.newObject(HeapRegionSetBase.class, oldSetAddr); } public HeapRegionSetBase humongousSet() { Address humongousSetAddr = addr.addOffsetTo(humongousSetFieldOffset); return (HeapRegionSetBase) VMObjectFactory.newObject(HeapRegionSetBase.class, humongousSetAddr); } private Iterator<HeapRegion> heapRegionIterator() { return hrs().heapRegionIterator(); } public void heapRegionIterate(SpaceClosure scl) { Iterator<HeapRegion> iter = heapRegionIterator(); while (iter.hasNext()) { HeapRegion hr = iter.next(); scl.doSpace(hr); } } public CollectedHeapName kind() { return CollectedHeapName.G1_COLLECTED_HEAP; } public G1CollectedHeap(Address addr) { super(addr); } }