Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/G1ReferentFieldReadBarrier.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | f57d86eb036f |
children | 7e2c87dae93e |
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/* * Copyright (c) 2013, 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 * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.hotspot.nodes; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; /** * The {@code G1ReferentFieldReadBarrier} is added when a read access is performed to the referent * field of a {@link java.lang.ref.Reference} object (through a {@code LoadFieldNode} or an * {@code UnsafeLoadNode}). The return value of the read is passed to the snippet implementing the * read barrier and consequently is added to the SATB queue if the concurrent marker is enabled. */ @NodeInfo public final class G1ReferentFieldReadBarrier extends WriteBarrier { protected final boolean doLoad; public G1ReferentFieldReadBarrier(ValueNode object, ValueNode expectedObject, LocationNode location, boolean doLoad) { super(object, expectedObject, location, true); this.doLoad = doLoad; } public ValueNode getExpectedObject() { return getValue(); } public boolean doLoad() { return doLoad; } }