64     if (VM.getVM().isLP64()) {
 65       if (type == BasicType.T_OBJECT || type == BasicType.T_ARRAY) {
 66         return !VM.getVM().isCompressedOopsEnabled();
 67       }
 68     }
 69     return type == BasicType.T_DOUBLE || type == BasicType.T_LONG;
 70   }
 71 
 72   private static long headerSizeInBytes() {
 73     if (headerSize != 0) {
 74       return headerSize;
 75     }
 76     headerSize = lengthOffsetInBytes() + VM.getVM().getIntSize();
 77     return headerSize;
 78   }
 79 
 80   private static long lengthOffsetInBytes() {
 81     if (lengthOffsetInBytes != 0) {
 82       return lengthOffsetInBytes;
 83     }
 84     if (VM.getVM().isCompressedKlassPointersEnabled()) {


 85       lengthOffsetInBytes = typeSize - VM.getVM().getIntSize();
 86     } else {
 87       lengthOffsetInBytes = typeSize;
 88     }
 89     return lengthOffsetInBytes;
 90   }
 91 
 92   // Accessors for declared fields
 93   public long getLength() {
 94     boolean isUnsigned = true;
 95     return this.getHandle().getCIntegerAt(lengthOffsetInBytes(), VM.getVM().getIntSize(), isUnsigned);
 96   }
 97 
 98   public long getObjectSize() {
 99     ArrayKlass klass = (ArrayKlass) getKlass();
100     // We have to fetch the length of the array, shift (multiply) it
101     // appropriately, up to wordSize, add the header, and align to
102     // object size.
103     long s = getLength() << klass.getLog2ElementSize();
104     s += klass.getArrayHeaderInBytes();

 64     if (VM.getVM().isLP64()) {
 65       if (type == BasicType.T_OBJECT || type == BasicType.T_ARRAY) {
 66         return !VM.getVM().isCompressedOopsEnabled();
 67       }
 68     }
 69     return type == BasicType.T_DOUBLE || type == BasicType.T_LONG;
 70   }
 71 
 72   private static long headerSizeInBytes() {
 73     if (headerSize != 0) {
 74       return headerSize;
 75     }
 76     headerSize = lengthOffsetInBytes() + VM.getVM().getIntSize();
 77     return headerSize;
 78   }
 79 
 80   private static long lengthOffsetInBytes() {
 81     if (lengthOffsetInBytes != 0) {
 82       return lengthOffsetInBytes;
 83     }
 84     if (VM.getVM().isCompactObjectHeadersEnabled()) {
 85       lengthOffsetInBytes = Oop.getHeaderSize();
 86     } else if (VM.getVM().isCompressedKlassPointersEnabled()) {
 87       lengthOffsetInBytes = typeSize - VM.getVM().getIntSize();
 88     } else {
 89       lengthOffsetInBytes = typeSize;
 90     }
 91     return lengthOffsetInBytes;
 92   }
 93 
 94   // Accessors for declared fields
 95   public long getLength() {
 96     boolean isUnsigned = true;
 97     return this.getHandle().getCIntegerAt(lengthOffsetInBytes(), VM.getVM().getIntSize(), isUnsigned);
 98   }
 99 
100   public long getObjectSize() {
101     ArrayKlass klass = (ArrayKlass) getKlass();
102     // We have to fetch the length of the array, shift (multiply) it
103     // appropriately, up to wordSize, add the header, and align to
104     // object size.
105     long s = getLength() << klass.getLog2ElementSize();
106     s += klass.getArrayHeaderInBytes();