/*
* Copyright (c) 2010, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.max.tele.method;
import com.sun.max.unsafe.*;
/**
* Represents a machine code location in the VM.
* <p>
* The absolute location may change, or may become dead if evicted
* from a managed code region.
*/
public interface RemoteCodePointer {
/**
* Gets the current absolute location in VM memory of a byte in an
* area of machine code.
*
* @return non-null: the current memory location of the code if live,
* {@link Address#zero()} if not live.
*/
Address getAddress();
/**
* Gets the status of the machine code with respect to possible code
* eviction.
*
* @return non-null: {@code true} if the machine code is still used by
* the VM, {@code false} if it has been evicted and is no longer used.
*/
boolean isCodeLive();
}