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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.
*
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* published by the Free Software Foundation.
*
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* 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.
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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);
}
}