| /* |
| * Copyright (c) 2011, 2016, 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 org.graalvm.compiler.nodes.extended; |
| |
| import static org.graalvm.compiler.nodeinfo.InputType.Memory; |
| import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_20; |
| import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2; |
| |
| import org.graalvm.compiler.core.common.LocationIdentity; |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.FixedWithNextNode; |
| import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; |
| import org.graalvm.compiler.nodes.spi.LIRLowerable; |
| import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; |
| |
| /** |
| * Creates a memory barrier. |
| */ |
| @NodeInfo(nameTemplate = "Membar#{p#location/s}", allowedUsageTypes = Memory, cycles = CYCLES_20, size = SIZE_2) |
| public final class MembarNode extends FixedWithNextNode implements LIRLowerable, MemoryCheckpoint.Single { |
| |
| public static final NodeClass<MembarNode> TYPE = NodeClass.create(MembarNode.class); |
| protected final int barriers; |
| protected final LocationIdentity location; |
| |
| public MembarNode(int barriers) { |
| this(barriers, LocationIdentity.any()); |
| } |
| |
| public MembarNode(int barriers, LocationIdentity location) { |
| super(TYPE, StampFactory.forVoid()); |
| this.barriers = barriers; |
| this.location = location; |
| } |
| |
| @Override |
| public LocationIdentity getLocationIdentity() { |
| return location; |
| } |
| |
| @Override |
| public void generate(NodeLIRBuilderTool generator) { |
| generator.getLIRGeneratorTool().emitMembar(barriers); |
| } |
| |
| @NodeIntrinsic |
| public static native void memoryBarrier(@ConstantNodeParameter int barriers); |
| |
| @NodeIntrinsic |
| public static native void memoryBarrier(@ConstantNodeParameter int barriers, @ConstantNodeParameter LocationIdentity location); |
| } |