| /* VMFrame.java -- Reference implementation of VM hooks for JDWP Frame access. |
| Copyright (C) 2005, 2006 Free Software Foundation |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.classpath.jdwp; |
| |
| import gnu.classpath.jdwp.util.Location; |
| |
| /** |
| * Reference implementation of VM hooks for JDWP Frame access. |
| * |
| * @author aluchko |
| */ |
| |
| public class VMFrame |
| { |
| /** |
| * Returns the size of a frame ID over JDWP |
| */ |
| public static final int SIZE = 8; |
| |
| // The object this frame resides in |
| private Object obj; |
| |
| // The current location of this frame |
| private Location loc; |
| |
| // id of this frame |
| private long id; |
| |
| /** |
| * Gets the current location of the frame. |
| */ |
| public Location getLocation() |
| { |
| return loc; |
| } |
| |
| /** |
| * Returns the value of the variable in the given slot. |
| * |
| * @param slot the slot containing the variable |
| */ |
| public native Object getValue(int slot); |
| |
| /** |
| * Assigns the given variable to the given value. |
| * @param slot The slot which contains the variable |
| * @param value The value to assign the variable to |
| */ |
| public native void setValue(int slot, Object value); |
| |
| /** |
| * Get the object which is represented by 'this' in the context of the frame, |
| * returns null if the method is native or static. |
| */ |
| public Object getObject() |
| { |
| return obj; |
| } |
| |
| /** |
| * Get the frameID |
| * @return an id which is unique within the scope of the VM |
| */ |
| public long getId() |
| { |
| return id; |
| } |
| |
| } |