20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package org.graalvm.compiler.phases.common.util;
24
25 import java.util.EnumSet;
26 import java.util.HashSet;
27 import java.util.Set;
28
29 import org.graalvm.compiler.graph.Graph.NodeEvent;
30 import org.graalvm.compiler.graph.Graph.NodeEventListener;
31 import org.graalvm.compiler.graph.Node;
32 import org.graalvm.compiler.graph.Node.IndirectCanonicalization;
33 import org.graalvm.util.Equivalence;
34 import org.graalvm.util.EconomicSet;
35
36 /**
37 * A simple {@link NodeEventListener} implementation that accumulates event nodes in a
38 * {@link HashSet}.
39 */
40 public class HashSetNodeEventListener implements NodeEventListener {
41
42 private final EconomicSet<Node> nodes;
43 private final Set<NodeEvent> filter;
44
45 /**
46 * Creates a {@link NodeEventListener} that collects nodes from all events.
47 */
48 public HashSetNodeEventListener() {
49 this.nodes = EconomicSet.create(Equivalence.IDENTITY);
50 this.filter = EnumSet.allOf(NodeEvent.class);
51 }
52
53 /**
54 * Creates a {@link NodeEventListener} that collects nodes from all events that match a given
55 * filter.
56 */
57 public HashSetNodeEventListener(Set<NodeEvent> filter) {
58 this.nodes = EconomicSet.create(Equivalence.IDENTITY);
59 this.filter = filter;
60 }
61
62 /**
63 * Excludes a given event from those for which nodes are collected.
64 */
65 public HashSetNodeEventListener exclude(NodeEvent e) {
66 filter.remove(e);
67 return this;
68 }
69
70 @Override
71 public void event(NodeEvent e, Node node) {
72 if (filter.contains(e)) {
73 nodes.add(node);
74 if (node instanceof IndirectCanonicalization) {
75 for (Node usage : node.usages()) {
76 nodes.add(usage);
77 }
78 }
79 }
80 }
81
82 /**
83 * Gets the set being used to accumulate the nodes communicated to this listener.
84 */
85 public EconomicSet<Node> getNodes() {
86 return nodes;
87 }
88 }
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20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package org.graalvm.compiler.phases.common.util;
24
25 import java.util.EnumSet;
26 import java.util.HashSet;
27 import java.util.Set;
28
29 import org.graalvm.compiler.graph.Graph.NodeEvent;
30 import org.graalvm.compiler.graph.Graph.NodeEventListener;
31 import org.graalvm.compiler.graph.Node;
32 import org.graalvm.compiler.graph.Node.IndirectCanonicalization;
33 import org.graalvm.util.Equivalence;
34 import org.graalvm.util.EconomicSet;
35
36 /**
37 * A simple {@link NodeEventListener} implementation that accumulates event nodes in a
38 * {@link HashSet}.
39 */
40 public class HashSetNodeEventListener extends NodeEventListener {
41
42 private final EconomicSet<Node> nodes;
43 private final Set<NodeEvent> filter;
44
45 /**
46 * Creates a {@link NodeEventListener} that collects nodes from all events.
47 */
48 public HashSetNodeEventListener() {
49 this.nodes = EconomicSet.create(Equivalence.IDENTITY);
50 this.filter = EnumSet.allOf(NodeEvent.class);
51 }
52
53 /**
54 * Creates a {@link NodeEventListener} that collects nodes from all events that match a given
55 * filter.
56 */
57 public HashSetNodeEventListener(Set<NodeEvent> filter) {
58 this.nodes = EconomicSet.create(Equivalence.IDENTITY);
59 this.filter = filter;
60 }
61
62 /**
63 * Excludes a given event from those for which nodes are collected.
64 */
65 public HashSetNodeEventListener exclude(NodeEvent e) {
66 filter.remove(e);
67 return this;
68 }
69
70 @Override
71 public void changed(NodeEvent e, Node node) {
72 if (filter.contains(e)) {
73 nodes.add(node);
74 if (node instanceof IndirectCanonicalization) {
75 for (Node usage : node.usages()) {
76 nodes.add(usage);
77 }
78 }
79 }
80 }
81
82 /**
83 * Gets the set being used to accumulate the nodes communicated to this listener.
84 */
85 public EconomicSet<Node> getNodes() {
86 return nodes;
87 }
88 }
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