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8372441: JFR: Improve logging of TestBackToBackSensitive

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Reviewed-by: mgronlun
This commit is contained in:
Erik Gahlin 2025-11-25 18:48:17 +00:00
parent c1230068dc
commit c0abecdd1f
1 changed files with 12 additions and 9 deletions
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21
test/jdk/jdk/jfr/event/runtime/TestBackToBackSensitive.java
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@ -67,6 +67,7 @@ public class TestBackToBackSensitive {
if (cl != null) {
if (cl.getType().getName().contains("PlatformClassLoader")) {
classLoaderStatistics.add(e.getStartTime());
System.out.println("Class loader" + e);
}
}
});
@ -87,20 +88,20 @@ public class TestBackToBackSensitive {
r1.stop();
long chunkFiles = filesInRepository();
System.out.println("Number of chunk files: " + chunkFiles);
// When jdk.PhysicalMemory is expected to be emitted:
// Chunk 1: begin, end
// Chunk 2: begin, end
// Chunk 3: begin, end
// Chunk 4: begin, end
assertCount(r1, "jdk.PhysicalMemory", physicalMemory, 2 * chunkFiles);
// When jdk.ClassLoaderStatistics and jdk.ThreadThreadDump are expected to be
// emitted:
// Chunk 1: begin, end
// Chunk 2: begin, end
// Chunk 3: end
// Chunk 4: end
assertCount("jdk.ThreadDump", threadDumps, 2 + 2 + (chunkFiles - 2));
assertCount("jdk.ClassLoaderStatistics", classLoaderStatistics, 2 + 2 + (chunkFiles - 2));
// When jdk.PhysicalMemory is expected to be emitted:
// Chunk 1: begin, end
// Chunk 2: begin, end
// Chunk 3: begin, end
// Chunk 4: begin, end
assertCount("jdk.PhysicalMemory", physicalMemory, 2 * chunkFiles);
assertCount(r1, "jdk.ThreadDump", threadDumps, 2 + 2 + (chunkFiles - 2));
assertCount(r1, "jdk.ClassLoaderStatistics", classLoaderStatistics, 2 + 2 + (chunkFiles - 2));
}
}
@ -109,13 +110,15 @@ public class TestBackToBackSensitive {
return Files.list(repository).filter(p -> p.toString().endsWith(".jfr")).count();
}
private static void assertCount(String eventName, Set<Instant> timestamps, long expected) throws Exception {
private static void assertCount(RecordingStream stream, String eventName, Set<Instant> timestamps, long expected) throws Exception {
System.out.println("Timestamps for " + eventName + ":");
for (Instant timestamp : timestamps) {
System.out.println(timestamp);
}
int count = timestamps.size();
if (count != expected) {
System.out.println("Dumping failure file.");
stream.dump(Path.of("failure.jfr"));
throw new Exception("Expected " + expected + " timestamps for event " + eventName + ", but got " + count);
}
}