Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/utilities/IntArray.java @ 6725:da91efe96a93
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 |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
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package sun.jvm.hotspot.utilities; import java.util.Observable; import java.util.Observer; import sun.jvm.hotspot.debugger.Address; import sun.jvm.hotspot.runtime.VM; import sun.jvm.hotspot.types.Type; import sun.jvm.hotspot.types.TypeDataBase; import sun.jvm.hotspot.types.WrongTypeException; public class IntArray extends GenericArray { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { elemType = db.lookupType("int"); Type type = db.lookupType("Array<int>"); dataFieldOffset = type.getAddressField("_data").getOffset(); } private static long dataFieldOffset; protected static Type elemType; public IntArray(Address addr) { super(addr, dataFieldOffset); } public int at(int i) { return (int)getIntegerAt(i); } public Type getElemType() { return elemType; } }