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Automatic merge of jdk:master into master

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duke
duke committed May 20, 2020
2 parents 589ef02 + 58a34f7 commit 72f625b4bc75c4783c5014cc804895dc399cd380
Showing with 39 additions and 29 deletions.
  1. +39 −29 test/hotspot/jtreg/gc/z/TestGarbageCollectorMXBean.java
@@ -34,13 +34,20 @@
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import javax.management.Notification;
import javax.management.NotificationBroadcaster;
import javax.management.NotificationEmitter;
import javax.management.NotificationListener;
import javax.management.openmbean.CompositeData;

import com.sun.management.GarbageCollectionNotificationInfo;

public class TestGarbageCollectorMXBean {
private static final long startTime = System.nanoTime();

private static void log(String msg) {
final String elapsedSeconds = String.format("%.3fs", (System.nanoTime() - startTime) / 1_000_000_000.0);
System.out.println("[" + elapsedSeconds + "] (" + Thread.currentThread().getName() + ") " + msg);
}

public static void main(String[] args) throws Exception {
final long M = 1024 * 1024;
final long initialCapacity = Long.parseLong(args[0]) * M;
@@ -67,61 +74,61 @@ public static void main(String[] args) throws Exception {
final var memoryUsageBeforeGC = info.getGcInfo().getMemoryUsageBeforeGc().get("ZHeap");
final var memoryUsageAfterGC = info.getGcInfo().getMemoryUsageAfterGc().get("ZHeap");

System.out.println(name + " (" + type + ")");
System.out.println(" Id: " + id);
System.out.println(" Action: " + action);
System.out.println(" Cause: " + cause);
System.out.println(" StartTime: " + startTime);
System.out.println(" EndTime: " + endTime);
System.out.println(" Duration: " + duration);
System.out.println(" MemoryUsageBeforeGC: " + memoryUsageBeforeGC);
System.out.println(" MemoryUsageAfterGC: " + memoryUsageAfterGC);
System.out.println();
log(name + " (" + type + ")");
log(" Id: " + id);
log(" Action: " + action);
log(" Cause: " + cause);
log(" StartTime: " + startTime);
log(" EndTime: " + endTime);
log(" Duration: " + duration);
log(" MemoryUsageBeforeGC: " + memoryUsageBeforeGC);
log(" MemoryUsageAfterGC: " + memoryUsageAfterGC);
log("");

if (name.equals("ZGC")) {
cycles.incrementAndGet();
} else {
System.out.println("ERROR: Name");
log("ERROR: Name");
errors.incrementAndGet();
}

if (!action.equals("end of major GC")) {
System.out.println("ERROR: Action");
log("ERROR: Action");
errors.incrementAndGet();
}

if (memoryUsageBeforeGC.getInit() != initialCapacity) {
System.out.println("ERROR: MemoryUsageBeforeGC.init");
log("ERROR: MemoryUsageBeforeGC.init");
errors.incrementAndGet();
}

if (memoryUsageBeforeGC.getUsed() > initialCapacity) {
System.out.println("ERROR: MemoryUsageBeforeGC.used");
log("ERROR: MemoryUsageBeforeGC.used");
errors.incrementAndGet();
}

if (memoryUsageBeforeGC.getCommitted() != initialCapacity) {
System.out.println("ERROR: MemoryUsageBeforeGC.committed");
log("ERROR: MemoryUsageBeforeGC.committed");
errors.incrementAndGet();
}

if (memoryUsageBeforeGC.getMax() != maxCapacity) {
System.out.println("ERROR: MemoryUsageBeforeGC.max");
log("ERROR: MemoryUsageBeforeGC.max");
errors.incrementAndGet();
}

if (!cause.equals("System.gc()")) {
System.out.println("ERROR: Cause");
log("ERROR: Cause");
errors.incrementAndGet();
}

if (startTime > endTime) {
System.out.println("ERROR: StartTime");
log("ERROR: StartTime");
errors.incrementAndGet();
}

if (endTime - startTime != duration) {
System.out.println("ERROR: Duration");
log("ERROR: Duration");
errors.incrementAndGet();
}
};
@@ -131,35 +138,38 @@ public static void main(String[] args) throws Exception {

// Register GC event listener
for (final var collector : ManagementFactory.getGarbageCollectorMXBeans()) {
final NotificationBroadcaster broadcaster = (NotificationBroadcaster)collector;
broadcaster.addNotificationListener(listener, null, null);
final NotificationEmitter emitter = (NotificationEmitter)collector;
emitter.addNotificationListener(listener, null, null);
}

final int minCycles = 5;

// Run GCs
for (int i = 0; i < minCycles; i++) {
log("Starting GC " + i);
System.gc();
}

// Wait at most 60 seconds
for (int i = 0; i < 60; i++) {
// Wait at most 90 seconds
for (int i = 0; i < 90; i++) {
log("Waiting...");
Thread.sleep(1000);

if (cycles.get() >= minCycles) {
// All events received
log("All events received!");
break;
}
}

final int actualCycles = cycles.get();
final int actualErrors = errors.get();

System.out.println(" minCycles: " + minCycles);
System.out.println("actualCycles: " + actualCycles);
System.out.println("actualErrors: " + actualErrors);
log(" minCycles: " + minCycles);
log("actualCycles: " + actualCycles);
log("actualErrors: " + actualErrors);

// Verify number of cycle events
if (cycles.get() < minCycles) {
if (actualCycles < minCycles) {
throw new Exception("Unexpected cycles");
}

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