/*
* 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;
/**
* An object that refers to a resource in the VM, and which reads
* and caches some related state from the VM.
*/
public interface TeleVMCache {
/**
* Causes this object to refresh any state that is read and cached from the VM, must
* be called in a thread holding the VM lock.
* <p>
* Caches can be tagged with the process epoch, the number of times the process has run,
* on the assumption that the contents of VM memory will not change without
* an increment of the epoch counter.
*
* @param epoch the number of times the VM process has run so far.
* @see TeleVM#lock()
*/
void updateCache(long epoch);
}