test/hotspot/jtreg/gc/g1/TestHumongousShrinkHeap.java

8217332: JTREG: Clean up, use generics instead of raw types

*** 50,60 ****
  public class TestHumongousShrinkHeap {
  
      public static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
      public static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
  
!     private static final List<List<byte[]>> garbage = new ArrayList();
      private static final int REGION_SIZE = 1024 * 1024; // 1M
      private static final int LISTS_COUNT = 10;
      private static final int HUMON_SIZE = Math.round(.9f * REGION_SIZE);
  
      private static final long TOTAL_MEMORY = Runtime.getRuntime().totalMemory();
--- 50,60 ----
  public class TestHumongousShrinkHeap {
  
      public static final String MIN_FREE_RATIO_FLAG_NAME = "MinHeapFreeRatio";
      public static final String MAX_FREE_RATIO_FLAG_NAME = "MaxHeapFreeRatio";
  
!     private static final List<List<byte[]>> garbage = new ArrayList<>();
      private static final int REGION_SIZE = 1024 * 1024; // 1M
      private static final int LISTS_COUNT = 10;
      private static final int HUMON_SIZE = Math.round(.9f * REGION_SIZE);
  
      private static final long TOTAL_MEMORY = Runtime.getRuntime().totalMemory();
***************
*** 106,116 ****
      }
  
      private void allocate() {
  
          for (int i = 0; i < LISTS_COUNT; i++) {
!             List<byte[]> stuff = new ArrayList();
              allocateList(stuff, HUMON_COUNT, HUMON_SIZE);
              MemoryUsagePrinter.printMemoryUsage("allocate #" + (i+1));
              garbage.add(stuff);
          }
      }
--- 106,116 ----
      }
  
      private void allocate() {
  
          for (int i = 0; i < LISTS_COUNT; i++) {
!             List<byte[]> stuff = new ArrayList<>();
              allocateList(stuff, HUMON_COUNT, HUMON_SIZE);
              MemoryUsagePrinter.printMemoryUsage("allocate #" + (i+1));
              garbage.add(stuff);
          }
      }
***************
*** 118,133 ****
      private void free() {
          // do not free last one list
          garbage.subList(0, garbage.size() - 1).clear();
  
          // do not free last one element from last list
!         List stuff = garbage.get(garbage.size() - 1);
          stuff.subList(0, stuff.size() - 1).clear();
          System.gc();
      }
  
!     private static void allocateList(List garbage, int count, int size) {
          for (int i = 0; i < count; i++) {
              garbage.add(new byte[size]);
          }
      }
  }
--- 118,133 ----
      private void free() {
          // do not free last one list
          garbage.subList(0, garbage.size() - 1).clear();
  
          // do not free last one element from last list
!         List<byte[]> stuff = garbage.get(garbage.size() - 1);
          stuff.subList(0, stuff.size() - 1).clear();
          System.gc();
      }
  
!     private static void allocateList(List<byte[]> garbage, int count, int size) {
          for (int i = 0; i < count; i++) {
              garbage.add(new byte[size]);
          }
      }
  }