test/serviceability/tmtools/jstat/GcCauseTest02.java

*** 1,7 ****
  /*
!  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * 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.
*** 29,59 ****
   *          jstat should show that ~70% of heap (OC/OU ~= 70%).
   * @requires vm.opt.ExplicitGCInvokesConcurrent != true
   * @modules java.base/jdk.internal.misc
   * @library /test/lib
   * @library ../share
!  * @run main/othervm -XX:+UsePerfData -XX:InitialHeapSize=128M -XX:MaxHeapSize=128M -XX:MaxMetaspaceSize=128M GcCauseTest02
   */
  import utils.*;
  
  public class GcCauseTest02 {
  
      private final static float targetMemoryUsagePercent = 0.7f;
  
      public static void main(String[] args) throws Exception {
  
          // We will be running "jstat -gc" tool
          JstatGcCauseTool jstatGcTool = new JstatGcCauseTool(ProcessHandle.current().getPid());
  
          // Run once and get the  results asserting that they are reasonable
          JstatGcCauseResults measurement1 = jstatGcTool.measure();
          measurement1.assertConsistency();
  
-         GcProvoker gcProvoker = new GcProvoker();
- 
          // Eat metaspace and heap then run the tool again and get the results  asserting that they are reasonable
!         gcProvoker.allocateAvailableMetaspaceAndHeap(targetMemoryUsagePercent);
          // Collect garbage. Also update VM statistics
          System.gc();
          JstatGcCauseResults measurement2 = jstatGcTool.measure();
          measurement2.assertConsistency();
  
--- 29,59 ----
   *          jstat should show that ~70% of heap (OC/OU ~= 70%).
   * @requires vm.opt.ExplicitGCInvokesConcurrent != true
   * @modules java.base/jdk.internal.misc
   * @library /test/lib
   * @library ../share
!  * @run main/othervm -XX:+UsePerfData -XX:NewSize=4m -XX:InitialHeapSize=128M -XX:MaxHeapSize=128M -XX:MaxMetaspaceSize=128M GcCauseTest02
   */
  import utils.*;
  
  public class GcCauseTest02 {
  
      private final static float targetMemoryUsagePercent = 0.7f;
  
      public static void main(String[] args) throws Exception {
  
+         GarbageProducer gp = new GarbageProducer(targetMemoryUsagePercent);
+ 
          // We will be running "jstat -gc" tool
          JstatGcCauseTool jstatGcTool = new JstatGcCauseTool(ProcessHandle.current().getPid());
  
          // Run once and get the  results asserting that they are reasonable
          JstatGcCauseResults measurement1 = jstatGcTool.measure();
          measurement1.assertConsistency();
  
          // Eat metaspace and heap then run the tool again and get the results  asserting that they are reasonable
!         gp.allocateMetaspaceAndHeap();
          // Collect garbage. Also update VM statistics
          System.gc();
          JstatGcCauseResults measurement2 = jstatGcTool.measure();
          measurement2.assertConsistency();