test/serviceability/tmtools/jstat/GcTest02.java

*** 26,39 ****
   * @test
   * @summary Test checks output displayed with jstat -gc.
   *          Test scenario:
   *          tests forces debuggee application eat ~70% of heap and runs jstat.
   *          jstat should show that ~70% of heap is utilized (OC/OU ~= 70%).
   * @modules java.base/jdk.internal.misc
   * @library /test/lib
   * @library ../share
!  * @run main/othervm -XX:+UsePerfData -Xmx128M -XX:MaxMetaspaceSize=128M GcTest02
   */
  
  public class GcTest02 {
  
      private final static float targetMemoryUsagePercent = 0.7f;
--- 26,40 ----
   * @test
   * @summary Test checks output displayed with jstat -gc.
   *          Test scenario:
   *          tests forces debuggee application eat ~70% of heap and runs jstat.
   *          jstat should show that ~70% of heap is utilized (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 GcTest02
   */
  
  public class GcTest02 {
  
      private final static float targetMemoryUsagePercent = 0.7f;
*** 45,58 ****
  
          // Run once and get the  results asserting that they are reasonable
          JstatGcResults measurement1 = jstatGcTool.measure();
          measurement1.assertConsistency();
  
!         GcProvoker gcProvoker = GcProvoker.createGcProvoker();
  
          // Eat metaspace and heap then run the tool again and get the results  asserting that they are reasonable
!         gcProvoker.eatMetaspaceAndHeap(targetMemoryUsagePercent);
          JstatGcResults measurement2 = jstatGcTool.measure();
          measurement2.assertConsistency();
  
          // Assert that space has been utilized acordingly
          JstatResults.assertSpaceUtilization(measurement2, targetMemoryUsagePercent);
--- 46,61 ----
  
          // Run once and get the  results asserting that they are reasonable
          JstatGcResults 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 updates VM statistics
!         System.gc();
          JstatGcResults measurement2 = jstatGcTool.measure();
          measurement2.assertConsistency();
  
          // Assert that space has been utilized acordingly
          JstatResults.assertSpaceUtilization(measurement2, targetMemoryUsagePercent);