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package org.graalvm.compiler.hotspot.nodes;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;

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.ValueNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

Marks the control flow path where an object acquired a lightweight lock based on an atomic compare-and-swap (CAS) of the mark word in the object's header.
/** * Marks the control flow path where an object acquired a lightweight lock based on an atomic * compare-and-swap (CAS) of the mark word in the object's header. */
@NodeInfo(cycles = CYCLES_0, size = SIZE_0) public final class AcquiredCASLockNode extends FixedWithNextNode implements LIRLowerable { public static final NodeClass<AcquiredCASLockNode> TYPE = NodeClass.create(AcquiredCASLockNode.class); @Input ValueNode object; public AcquiredCASLockNode(ValueNode object) { super(TYPE, StampFactory.forVoid()); this.object = object; } public ValueNode object() { return object; } @Override public void generate(NodeLIRBuilderTool generator) { // This is just a marker node so it generates nothing } @NodeIntrinsic public static native void mark(Object object); }