hotspot/agent/src/share/classes/sun/jvm/hotspot/types/NarrowOopField.java
author coleenp
Sun, 13 Apr 2008 17:43:42 -0400
changeset 360 21d113ecbf6a
child 5547 f4b087cbb361
permissions -rw-r--r--
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold

/*
 * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

package sun.jvm.hotspot.types;

import sun.jvm.hotspot.debugger.*;

/** A specialization of Field which represents a field containing an
    narrow oop value and which adds typechecked getValue() routines returning
    OopHandles. */

public interface NarrowOopField extends OopField {
  /** The field must be nonstatic and the type of the field must be an
      oop type, or a WrongTypeException will be thrown. */
  public OopHandle getValue(Address addr)     throws UnmappedAddressException, UnalignedAddressException, WrongTypeException;

  /** The field must be static and the type of the field must be an
      oop type, or a WrongTypeException will be thrown. */
  public OopHandle getValue()                 throws UnmappedAddressException, UnalignedAddressException, WrongTypeException;
}