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*
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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package org.graalvm.compiler.hotspot.phases;
import org.graalvm.compiler.debug.DebugCloseable;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
import org.graalvm.compiler.hotspot.gc.g1.G1BarrierSet;
import org.graalvm.compiler.hotspot.gc.shared.BarrierSet;
import org.graalvm.compiler.hotspot.gc.shared.CardTableBarrierSet;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.extended.ArrayRangeWrite;
import org.graalvm.compiler.nodes.java.AbstractCompareAndSwapNode;
import org.graalvm.compiler.nodes.java.LoweredAtomicReadAndWriteNode;
import org.graalvm.compiler.nodes.memory.ReadNode;
import org.graalvm.compiler.nodes.memory.WriteNode;
import org.graalvm.compiler.phases.Phase;
public class WriteBarrierAdditionPhase extends Phase {
private BarrierSet barrierSet;
public WriteBarrierAdditionPhase(GraalHotSpotVMConfig config) {
this.barrierSet = createBarrierSet(config);
}
@SuppressWarnings("try")
@Override
protected void run(StructuredGraph graph) {
for (Node n : graph.getNodes()) {
try (DebugCloseable scope = n.graph().withNodeSourcePosition(n)) {
if (n instanceof ReadNode) {
barrierSet.addReadNodeBarriers((ReadNode) n, graph);
} else if (n instanceof WriteNode) {
barrierSet.addWriteNodeBarriers((WriteNode) n, graph);
} else if (n instanceof LoweredAtomicReadAndWriteNode) {
LoweredAtomicReadAndWriteNode loweredAtomicReadAndWriteNode = (LoweredAtomicReadAndWriteNode) n;
barrierSet.addAtomicReadWriteNodeBarriers(loweredAtomicReadAndWriteNode, graph);
} else if (n instanceof AbstractCompareAndSwapNode) {
barrierSet.addCASBarriers((AbstractCompareAndSwapNode) n, graph);
} else if (n instanceof ArrayRangeWrite) {
ArrayRangeWrite node = (ArrayRangeWrite) n;
if (node.writesObjectArray()) {
barrierSet.addArrayRangeBarriers(node, graph);
}
}
}
}
}
@Override
public boolean checkContract() {
return false;
}
private BarrierSet createBarrierSet(GraalHotSpotVMConfig config) {
if (config.useG1GC) {
return createG1BarrierSet(config);
} else {
return createCardTableBarrierSet(config);
}
}
protected BarrierSet createCardTableBarrierSet(GraalHotSpotVMConfig config) {
return new CardTableBarrierSet(config);
}
protected BarrierSet createG1BarrierSet(GraalHotSpotVMConfig config) {
return new G1BarrierSet(config);
}
}