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1
19
20 package org.netbeans.spi.editor.highlighting.performance;
21
22 import java.lang.reflect.Method  ;
23 import java.util.Collections ;
24 import javax.swing.text.AttributeSet ;
25 import javax.swing.text.Document ;
26 import javax.swing.text.PlainDocument ;
27 import javax.swing.text.Position ;
28 import javax.swing.text.SimpleAttributeSet ;
29 import org.netbeans.junit.MemoryFilter;
30 import org.netbeans.junit.NbTestCase;
31 import org.netbeans.lib.editor.util.GapList;
32 import org.netbeans.spi.editor.highlighting.*;
33 import org.netbeans.spi.editor.highlighting.support.PositionsBag;
34
35
39 public class PositionsBagMemoryTest extends NbTestCase {
40
41 private static final int CNT = 1000;
42
43
44 public PositionsBagMemoryTest(String name) {
45 super(name);
46 }
47
48 public void testMemoryConsumptionBestCase() {
49 checkMemoryConsumption(false, true);
50 }
51
52 public void testMemoryConsumptionWorstCase() {
53 checkMemoryConsumption(false, false);
54 }
55
56 public void testIteratorMemoryConsumptionBestCase() {
57 checkIteratorMemoryConsumption(false, true);
58 }
59
60 public void testIteratorMemoryConsumptionWorstCase() {
61 checkIteratorMemoryConsumption(false, false);
62 }
63
64 public void testMergingBagMemoryConsumptionBestCase() {
65 checkMemoryConsumption(true, true);
66 }
67
68 public void testMergingBagMemoryConsumptionWorstCase() {
69 checkMemoryConsumption(true, false);
70 }
71
72 public void testMergingBagIteratorMemoryConsumptionBestCase() {
73 checkIteratorMemoryConsumption(true, true);
74 }
75
76 public void testMergingBagIteratorMemoryConsumptionWorst() {
77 checkIteratorMemoryConsumption(true, false);
78 }
79
80 private void checkMemoryConsumption(boolean merging, boolean bestCase) {
81 PositionsBag bag = new PositionsBag(new PlainDocument (), merging);
82
83 for(int i = 0; i < CNT; i++) {
84 if (bestCase) {
85 bag.addHighlight(new SimplePosition(i * 10), new SimplePosition((i + 1) * 10), SimpleAttributeSet.EMPTY);
86 } else {
87 bag.addHighlight(new SimplePosition(i * 10), new SimplePosition(i* 10 + 5), SimpleAttributeSet.EMPTY);
88 }
89 }
90
91 compact(bag);
92
93 assertSize("PositionsBag of " + CNT + " highlights " + (bestCase ? "(best case)" : "(worst case)"),
94 Collections.singleton(bag), bestCase ? 8500 : 16500, new MF());
95 }
96
97 private void checkIteratorMemoryConsumption(boolean merging, boolean bestCase) {
98 PositionsBag bag = new PositionsBag(new PlainDocument (), merging);
99
100 for(int i = 0; i < CNT; i++) {
101 if (bestCase) {
102 bag.addHighlight(new SimplePosition(i * 10), new SimplePosition((i + 1) * 10), SimpleAttributeSet.EMPTY);
103 } else {
104 bag.addHighlight(new SimplePosition(i * 10), new SimplePosition(i* 10 + 5), SimpleAttributeSet.EMPTY);
105 }
106 }
107
108 compact(bag);
109
110 HighlightsSequence sequence = bag.getHighlights(Integer.MIN_VALUE, Integer.MAX_VALUE);
111
112 for(int i = 0; i < CNT - 1; i++) {
114 boolean hasHighlight = sequence.moveNext();
115
116 assertTrue("Wrong number of highlights in the sequence; found only " + i, hasHighlight);
117 assertEquals("Wrong start offset of " + i + ". highlight",
118 i * 10, sequence.getStartOffset());
119 assertEquals("Wrong end offset of " + i + ". highlight",
120 bestCase ? (i + 1) * 10 : i * 10 + 5, sequence.getEndOffset());
121 assertSame("Wrong attributes of " + i + ". highlight", SimpleAttributeSet.EMPTY, sequence.getAttributes());
122 }
123
124 assertSize("HighlightsSequence of " + CNT + " highlights " + (bestCase ? "(best case)" : "(worst case)"),
125 Collections.singleton(sequence), bestCase ? 8500 : 16500, new MF());
126 }
127
128 @SuppressWarnings ("unchecked")
129 private void compact(PositionsBag bag) {
130 try {
131 Method m = bag.getClass().getDeclaredMethod("getMarks");
132 m.setAccessible(true);
133 GapList<Position > marks = (GapList<Position >) m.invoke(bag);
134 marks.trimToSize();
135
136 m = bag.getClass().getDeclaredMethod("getAttributes");
137 m.setAccessible(true);
138 GapList<Position > attributes = (GapList<Position >) m.invoke(bag);
139 attributes.trimToSize();
140 } catch (Exception e) {
141 AssertionError ae = new AssertionError (e.getMessage());
142 ae.initCause(e);
143 throw ae;
144 }
145 }
146
147 private static final class MF implements MemoryFilter {
148 public boolean reject(Object obj) {
149 if (Position .class.isAssignableFrom(obj.getClass()) ||
150 AttributeSet .class.isAssignableFrom(obj.getClass()) ||
151 Document .class.isAssignableFrom(obj.getClass()))
152 {
153 return true;
154 } else {
155 return false;
156 }
157 }
158 } }
160 |
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