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comparison agent/src/share/classes/sun/jvm/hotspot/utilities/IntArray.java @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
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6724:36d1d483d5d6 6725:da91efe96a93
1 package sun.jvm.hotspot.utilities;
2
3 import java.util.Observable;
4 import java.util.Observer;
5
6 import sun.jvm.hotspot.debugger.Address;
7 import sun.jvm.hotspot.runtime.VM;
8 import sun.jvm.hotspot.types.Type;
9 import sun.jvm.hotspot.types.TypeDataBase;
10 import sun.jvm.hotspot.types.WrongTypeException;
11
12 public class IntArray extends GenericArray {
13 static {
14 VM.registerVMInitializedObserver(new Observer() {
15 public void update(Observable o, Object data) {
16 initialize(VM.getVM().getTypeDataBase());
17 }
18 });
19 }
20
21 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
22 elemType = db.lookupType("int");
23
24 Type type = db.lookupType("Array<int>");
25 dataFieldOffset = type.getAddressField("_data").getOffset();
26 }
27
28 private static long dataFieldOffset;
29 protected static Type elemType;
30
31 public IntArray(Address addr) {
32 super(addr, dataFieldOffset);
33 }
34
35 public int at(int i) {
36 return (int)getIntegerAt(i);
37 }
38
39 public Type getElemType() {
40 return elemType;
41 }
42 }