public float getUsedMemoryPercentage() {
   if (gen != null) return gen.getUsedMemoryPercentage();
   else return 0;
 }
 public int getCPUTimeSeconds() {
   if (gen != null) return gen.getCPUTimeSeconds();
   else return 0;
 }
 public float getCPUUsagePercentage() {
   if (gen != null) return gen.getCPUUsagePercentage();
   else return 0;
 }