/*
* Copyright (c) 2007, 2011, 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.memory;
import static com.oracle.max.cri.intrinsics.MemoryBarriers.*;
import com.oracle.max.cri.intrinsics.*;
/**
* SMP memory models.
*/
public enum MemoryModel {
SequentialConsistency(LOAD_LOAD | LOAD_STORE | STORE_LOAD | STORE_STORE),
TotalStoreOrder(LOAD_LOAD | LOAD_STORE | STORE_STORE),
AMD64(LOAD_STORE | STORE_STORE),
PartialStoreOrder(LOAD_LOAD),
RelaxedMemoryOrder(0);
/**
* Mask of {@linkplain MemoryBarriers memory barrier} flags denoting the barriers that
* are not required to be explicitly inserted under this memory model.
*/
public final int impliedBarriers;
/**
* @param barriers the barriers that are implied everywhere in the code by this memory model
*/
private MemoryModel(int barriers) {
this.impliedBarriers = barriers;
}
}