60                                    memoryPoolName);
  61     }
  62 
  63     private static void checkMemoryUsage(String memoryPoolName, String perfNS)
  64         throws Exception {
  65         MemoryPoolMXBean pool = getMemoryPool(memoryPoolName);
  66 
  67         // First, call all the methods to let them allocate their own slab of metadata
  68         getMinCapacity(perfNS);
  69         getCapacity(perfNS);
  70         getUsed(perfNS);
  71         pool.getUsage().getInit();
  72         pool.getUsage().getUsed();
  73         pool.getUsage().getCommitted();
  74         assertEQ(1L, 1L, "Make assert load");
  75 
  76         // Must do a GC to update performance counters
  77         System.gc();
  78         assertEQ(getMinCapacity(perfNS), pool.getUsage().getInit(), "MinCapacity out of sync");
  79 
  80         // Adding a second GC due to metadata allocations caused caused by getting
  81         // initial size from the pool. This is needed when running with -Xcomp.
  82         System.gc();
  83         assertEQ(getUsed(perfNS), pool.getUsage().getUsed(), "Used out of sync");
  84         assertEQ(getCapacity(perfNS), pool.getUsage().getCommitted(), "Committed out of sync");
  85     }
  86 
  87     private static long getMinCapacity(String ns) throws Exception {
  88         return PerfCounters.findByName(ns + ".minCapacity").longValue();
  89     }
  90 
  91     private static long getCapacity(String ns) throws Exception {
  92         return PerfCounters.findByName(ns + ".capacity").longValue();
  93     }
  94 
  95     private static long getUsed(String ns) throws Exception {
  96         return PerfCounters.findByName(ns + ".used").longValue();
  97     }
  98 }

  60                                    memoryPoolName);
  61     }
  62 
  63     private static void checkMemoryUsage(String memoryPoolName, String perfNS)
  64         throws Exception {
  65         MemoryPoolMXBean pool = getMemoryPool(memoryPoolName);
  66 
  67         // First, call all the methods to let them allocate their own slab of metadata
  68         getMinCapacity(perfNS);
  69         getCapacity(perfNS);
  70         getUsed(perfNS);
  71         pool.getUsage().getInit();
  72         pool.getUsage().getUsed();
  73         pool.getUsage().getCommitted();
  74         assertEQ(1L, 1L, "Make assert load");
  75 
  76         // Must do a GC to update performance counters
  77         System.gc();
  78         assertEQ(getMinCapacity(perfNS), pool.getUsage().getInit(), "MinCapacity out of sync");
  79 
  80         // Adding a second GC due to metadata allocations caused by getting the
  81         // initial size from the pool. This is needed when running with -Xcomp.
  82         System.gc();
  83         assertEQ(getUsed(perfNS), pool.getUsage().getUsed(), "Used out of sync");
  84         assertEQ(getCapacity(perfNS), pool.getUsage().getCommitted(), "Committed out of sync");
  85     }
  86 
  87     private static long getMinCapacity(String ns) throws Exception {
  88         return PerfCounters.findByName(ns + ".minCapacity").longValue();
  89     }
  90 
  91     private static long getCapacity(String ns) throws Exception {
  92         return PerfCounters.findByName(ns + ".capacity").longValue();
  93     }
  94 
  95     private static long getUsed(String ns) throws Exception {
  96         return PerfCounters.findByName(ns + ".used").longValue();
  97     }
  98 }