test/hotspot/jtreg/gc/shenandoah/mxbeans/TestMemoryMXBeans.java

rev 53841 : 8219524: Shenandoah misreports "committed" size in MemoryMXBean
Reviewed-by: XXX

*** 50,66 ****
--- 50,72 ----
      }
  
      public static void testMemoryBean(long initSize, long maxSize) {
          MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
          long heapInit = memoryMXBean.getHeapMemoryUsage().getInit();
+         long heapCommitted = memoryMXBean.getHeapMemoryUsage().getCommitted();
          long heapMax = memoryMXBean.getHeapMemoryUsage().getMax();
          long nonHeapInit = memoryMXBean.getNonHeapMemoryUsage().getInit();
+         long nonHeapCommitted = memoryMXBean.getNonHeapMemoryUsage().getCommitted();
          long nonHeapMax = memoryMXBean.getNonHeapMemoryUsage().getMax();
  
          if (initSize > 0 && heapInit != initSize) {
              throw new IllegalStateException("Init heap size is wrong: " + heapInit + " vs " + initSize);
          }
          if (maxSize > 0 && heapMax != maxSize) {
              throw new IllegalStateException("Max heap size is wrong: " + heapMax + " vs " + maxSize);
          }
+         if (initSize > 0 && maxSize > 0 && initSize != maxSize && heapCommitted == heapMax) {
+             throw new IllegalStateException("Init committed heap size is wrong: " + heapCommitted +
+                                             " (init: " + initSize + ", max: " + maxSize + ")");
+         }
      }
  }