446   _features      = all_features_m;
 447 }
 448 
 449 void VM_Version::revert() {
 450   _features = saved_features;
 451 }
 452 
 453 unsigned int VM_Version::calc_parallel_worker_threads() {
 454   unsigned int result;
 455   if (is_M_series()) {
 456     // for now, use same gc thread calculation for M-series as for niagara-plus
 457     // in future, we may want to tweak parameters for nof_parallel_worker_thread
 458     result = nof_parallel_worker_threads(5, 16, 8);
 459   } else if (is_niagara_plus()) {
 460     result = nof_parallel_worker_threads(5, 16, 8);
 461   } else {
 462     result = nof_parallel_worker_threads(5, 8, 8);
 463   }
 464   return result;
 465 }

 446   _features      = all_features_m;
 447 }
 448 
 449 void VM_Version::revert() {
 450   _features = saved_features;
 451 }
 452 
 453 unsigned int VM_Version::calc_parallel_worker_threads() {
 454   unsigned int result;
 455   if (is_M_series()) {
 456     // for now, use same gc thread calculation for M-series as for niagara-plus
 457     // in future, we may want to tweak parameters for nof_parallel_worker_thread
 458     result = nof_parallel_worker_threads(5, 16, 8);
 459   } else if (is_niagara_plus()) {
 460     result = nof_parallel_worker_threads(5, 16, 8);
 461   } else {
 462     result = nof_parallel_worker_threads(5, 8, 8);
 463   }
 464   return result;
 465 }
 466 
 467 
 468 int VM_Version::parse_features(const char* implementation) {
 469   int features = unknown_m;
 470   // Convert to UPPER case before compare.
 471   char* impl = os::strdup_check_oom(implementation);
 472 
 473   for (int i = 0; impl[i] != 0; i++)
 474     impl[i] = (char)toupper((uint)impl[i]);
 475 
 476   if (strstr(impl, "SPARC64") != NULL) {
 477     features |= sparc64_family_m;
 478   } else if (strstr(impl, "SPARC-M") != NULL) {
 479     // M-series SPARC is based on T-series.
 480     features |= (M_family_m | T_family_m);
 481   } else if (strstr(impl, "SPARC-T") != NULL) {
 482     features |= T_family_m;
 483     if (strstr(impl, "SPARC-T1") != NULL) {
 484       features |= T1_model_m;
 485     }
 486   } else {
 487     if (strstr(impl, "SPARC") == NULL) {
 488 #ifndef PRODUCT
 489       // kstat on Solaris 8 virtual machines (branded zones)
 490       // returns "(unsupported)" implementation. Solaris 8 is not
 491       // supported anymore, but include this check to be on the
 492       // safe side.
 493       warning("Can't parse CPU implementation = '%s', assume generic SPARC", impl);
 494 #endif
 495     }
 496   }
 497   os::free((void*)impl);
 498   return features;
 499 }