24 */ |
24 */ |
25 package jdk.jfr.event.oldobject; |
25 package jdk.jfr.event.oldobject; |
26 |
26 |
27 import java.util.ArrayList; |
27 import java.util.ArrayList; |
28 import java.util.List; |
28 import java.util.List; |
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29 import java.util.Random; |
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30 import java.util.Vector; |
29 import java.util.concurrent.BrokenBarrierException; |
31 import java.util.concurrent.BrokenBarrierException; |
30 import java.util.concurrent.CyclicBarrier; |
32 import java.util.concurrent.CyclicBarrier; |
31 |
33 |
32 import jdk.jfr.Recording; |
34 import jdk.jfr.Recording; |
33 import jdk.jfr.consumer.RecordedClass; |
35 import jdk.jfr.consumer.RecordedClass; |
34 import jdk.jfr.consumer.RecordedEvent; |
36 import jdk.jfr.consumer.RecordedEvent; |
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37 import jdk.jfr.consumer.RecordedFrame; |
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38 import jdk.jfr.consumer.RecordedMethod; |
35 import jdk.jfr.consumer.RecordedObject; |
39 import jdk.jfr.consumer.RecordedObject; |
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40 import jdk.jfr.consumer.RecordedStackTrace; |
36 import jdk.jfr.internal.test.WhiteBox; |
41 import jdk.jfr.internal.test.WhiteBox; |
37 import jdk.test.lib.Asserts; |
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38 import jdk.test.lib.jfr.EventNames; |
42 import jdk.test.lib.jfr.EventNames; |
39 import jdk.test.lib.jfr.Events; |
43 import jdk.test.lib.jfr.Events; |
40 |
44 |
41 /** |
45 /** |
42 * @test |
46 * @test |
48 * @run main/othervm -XX:TLABSize=2k jdk.jfr.event.oldobject.TestLargeRootSet |
52 * @run main/othervm -XX:TLABSize=2k jdk.jfr.event.oldobject.TestLargeRootSet |
49 */ |
53 */ |
50 public class TestLargeRootSet { |
54 public class TestLargeRootSet { |
51 |
55 |
52 private static final int THREAD_COUNT = 50; |
56 private static final int THREAD_COUNT = 50; |
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57 private static final Random RANDOM = new Random(4711); |
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58 public static Vector<StackObject[]> temporaries = new Vector<>(OldObjects.MIN_SIZE); |
53 |
59 |
54 private static class RootThread extends Thread { |
60 private static class RootThread extends Thread { |
55 private final CyclicBarrier barrier; |
61 private final CyclicBarrier barrier; |
56 private int maxDepth = OldObjects.MIN_SIZE / THREAD_COUNT; |
62 private int maxDepth = OldObjects.MIN_SIZE / THREAD_COUNT; |
57 |
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58 public List<StackObject[]> temporaries = new ArrayList<>(maxDepth); |
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59 |
63 |
60 RootThread(CyclicBarrier cb) { |
64 RootThread(CyclicBarrier cb) { |
61 this.barrier = cb; |
65 this.barrier = cb; |
62 } |
66 } |
63 |
67 |
89 private static class StackObject { |
94 private static class StackObject { |
90 } |
95 } |
91 |
96 |
92 public static void main(String[] args) throws Exception { |
97 public static void main(String[] args) throws Exception { |
93 WhiteBox.setWriteAllObjectSamples(true); |
98 WhiteBox.setWriteAllObjectSamples(true); |
94 |
99 int attempt = 1; |
95 List<RootThread> threads = new ArrayList<>(); |
100 while (true) { |
96 try (Recording r = new Recording()) { |
101 System.out.println(); |
97 r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity"); |
102 System.out.println(); |
98 r.start(); |
103 System.out.println("ATTEMPT: " + attempt); |
99 CyclicBarrier cb = new CyclicBarrier(THREAD_COUNT + 1); |
104 System.out.println("===================================="); |
100 for (int i = 0; i < THREAD_COUNT; i++) { |
105 List<RootThread> threads = new ArrayList<>(); |
101 RootThread t = new RootThread(cb); |
106 try (Recording r = new Recording()) { |
102 t.start(); |
107 r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity"); |
103 if (i % 10 == 0) { |
108 r.start(); |
104 // Give threads some breathing room before starting next batch |
109 CyclicBarrier cb = new CyclicBarrier(THREAD_COUNT + 1); |
105 Thread.sleep(100); |
110 for (int i = 0; i < THREAD_COUNT; i++) { |
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111 RootThread t = new RootThread(cb); |
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112 t.start(); |
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113 if (i % 10 == 0) { |
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114 // Give threads some breathing room before starting next |
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115 // batch |
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116 Thread.sleep(100); |
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117 } |
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118 threads.add(t); |
106 } |
119 } |
107 threads.add(t); |
120 cb.await(); |
108 } |
121 System.gc(); |
109 cb.await(); |
122 r.stop(); |
110 System.gc(); |
123 cb.await(); |
111 r.stop(); |
124 List<RecordedEvent> events = Events.fromRecording(r); |
112 cb.await(); |
125 Events.hasEvents(events); |
113 List<RecordedEvent> events = Events.fromRecording(r); |
126 int sample = 0; |
114 Events.hasEvents(events); |
127 for (RecordedEvent e : events) { |
115 for (RecordedEvent e : events) { |
128 RecordedObject ro = e.getValue("object"); |
116 RecordedObject ro = e.getValue("object"); |
129 RecordedClass rc = ro.getValue("type"); |
117 RecordedClass rc = ro.getValue("type"); |
130 System.out.println("Sample: " + sample); |
118 System.out.println(rc.getName()); |
131 System.out.println(" - allocationTime: " + e.getInstant("allocationTime")); |
119 if (rc.getName().equals(StackObject[].class.getName())) { |
132 System.out.println(" - type: " + rc.getName()); |
120 return; // ok |
133 RecordedObject root = e.getValue("root"); |
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134 if (root != null) { |
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135 System.out.println(" - root:"); |
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136 System.out.println(" - description: " + root.getValue("description")); |
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137 System.out.println(" - system: " + root.getValue("system")); |
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138 System.out.println(" - type: " + root.getValue("type")); |
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139 } else { |
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140 System.out.println(" - root: N/A"); |
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141 } |
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142 RecordedStackTrace stack = e.getStackTrace(); |
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143 if (stack != null) { |
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144 System.out.println(" - stack:"); |
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145 int frameCount = 0; |
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146 for (RecordedFrame frame : stack.getFrames()) { |
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147 RecordedMethod m = frame.getMethod(); |
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148 System.out.println(" " + m.getType().getName() + "." + m.getName() + "(...)"); |
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149 frameCount++; |
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150 if (frameCount == 10) { |
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151 break; |
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152 } |
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153 } |
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154 } else { |
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155 System.out.println(" - stack: N/A"); |
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156 } |
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157 System.out.println(); |
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158 if (rc.getName().equals(StackObject[].class.getName())) { |
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159 return; // ok |
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160 } |
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161 sample++; |
121 } |
162 } |
122 } |
163 } |
123 Asserts.fail("Could not find root object"); |
164 attempt++; |
124 } |
165 } |
125 } |
166 } |
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167 |
126 } |
168 } |
127 |
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