test/gc/shenandoah/mxbeans/TestChurnNotifications.java

rev 10790 : [backport] Prefix Shenandoah tests with "Test"

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2018, Red Hat, Inc. and/or its affiliates.
+ * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *

@@ -20,51 +20,53 @@
  * questions.
  *
  */
 
 /*
- * @test ChurnNotifications
+ * @test TestChurnNotifications
  * @summary Check that MX notifications are reported for all cycles
+ * @key gc
  *
- * @run main/othervm -Xmx128m -XX:+UseShenandoahGC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCHeuristics=passive      -XX:+ShenandoahDegeneratedGC -Dprecise=true  ChurnNotifications
- * @run main/othervm -Xmx128m -XX:+UseShenandoahGC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCHeuristics=passive      -XX:-ShenandoahDegeneratedGC -Dprecise=true  ChurnNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=passive      -XX:+ShenandoahDegeneratedGC -Dprecise=true  TestChurnNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=passive      -XX:-ShenandoahDegeneratedGC -Dprecise=true  TestChurnNotifications
  *
- * @run main/othervm -Xmx128m -XX:+UseShenandoahGC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCHeuristics=adaptive     -Dprecise=false ChurnNotifications
- * @run main/othervm -Xmx128m -XX:+UseShenandoahGC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCHeuristics=static       -Dprecise=false ChurnNotifications
- * @run main/othervm -Xmx128m -XX:+UseShenandoahGC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCHeuristics=compact      -Dprecise=false ChurnNotifications
- * @run main/othervm -Xmx128m -XX:+UseShenandoahGC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCHeuristics=aggressive   -Dprecise=false ChurnNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive     -Dprecise=false TestChurnNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static       -Dprecise=false TestChurnNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact      -Dprecise=false TestChurnNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive   -Dprecise=false TestChurnNotifications
  */
 
 import java.util.*;
 import java.util.concurrent.atomic.*;
 import javax.management.*;
 import java.lang.management.*;
 import javax.management.openmbean.*;
+
 import com.sun.management.GarbageCollectionNotificationInfo;
 
-public class ChurnNotifications {
+public class TestChurnNotifications {
 
   static final long HEAP_MB   = 128;                           // adjust for test configuration above
   static final long TARGET_MB = Long.getLong("target", 8_000); // 8 Gb allocation
 
   // Should we track the churn precisely?
   // Precise tracking is only reliable when GC is fully stop-the-world. Otherwise,
   // we cannot tell, looking at heap used before/after, what was the GC churn.
   static final boolean PRECISE = Boolean.getBoolean("precise");
 
-  static final long M = 1024*1024;
+    static final long M = 1024 * 1024;
 
   static volatile Object sink;
 
   public static void main(String[] args) throws Exception {
     final AtomicLong churnBytes = new AtomicLong();
 
     NotificationListener listener = new NotificationListener() {
       @Override
       public void handleNotification(Notification n, Object o) {
         if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
-          GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData)n.getUserData());
+                    GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData());
           Map<String, MemoryUsage> mapBefore = info.getGcInfo().getMemoryUsageBeforeGc();
           Map<String, MemoryUsage> mapAfter = info.getGcInfo().getMemoryUsageAfterGc();
 
           MemoryUsage before = mapBefore.get("Shenandoah");
           MemoryUsage after  = mapAfter.get("Shenandoah");

@@ -82,13 +84,13 @@
     for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
       ((NotificationEmitter) bean).addNotificationListener(listener, null, null);
     }
 
     final int size = 100_000;
-    long count = TARGET_MB * 1024 * 1024 / (16 + 4*size);
+        long count = TARGET_MB * 1024 * 1024 / (16 + 4 * size);
 
-    long mem = count * (16 + 4*size);
+        long mem = count * (16 + 4 * size);
 
     for (int c = 0; c < count; c++) {
        sink = new int[size];
     }
 

@@ -96,18 +98,16 @@
 
     Thread.sleep(1000);
 
     long actual = churnBytes.get();
 
-    long minExpected = PRECISE ? (mem - HEAP_MB*1024*1024) : 1;
-    long maxExpected = mem + HEAP_MB*1024*1024;
+        long minExpected = PRECISE ? (mem - HEAP_MB * 1024 * 1024) : 1;
+        long maxExpected = mem + HEAP_MB * 1024 * 1024;
 
-    String msg = "Expected = [" + minExpected/M +"; " + maxExpected/M + "] (" + mem/M + "), actual = " + actual/M;
+        String msg = "Expected = [" + minExpected / M + "; " + maxExpected / M + "] (" + mem / M + "), actual = " + actual / M;
     if (minExpected < actual && actual < maxExpected) {
       System.out.println(msg);
     } else {
       throw new IllegalStateException(msg);
     }
   }
 }
-
-