ActorExecutionTrace.java 文件源码

public static void setUpGCMonitoring() {
  for (java.lang.management.GarbageCollectorMXBean bean : gcbeans) {
    NotificationEmitter emitter = (NotificationEmitter) bean;
    NotificationListener listener = new NotificationListener() {
      @Override
      public void handleNotification(final Notification notification,
          final Object handback) {
        if (GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION.equals(
            notification.getType())) {
          GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from(
              (CompositeData) notification.getUserData());
          long after = getTotal(info.getGcInfo().getMemoryUsageAfterGc());
          long before = getTotal(info.getGcInfo().getMemoryUsageBeforeGc());
          collectedMemory += before - after;
        }
      }
    };
    emitter.addNotificationListener(listener, null, null);
  }
}