C++ (Cpp) platform_features示例

示例#1

文件： vm_version_sparc.cpp 项目： gaoxiaojun/dync

int VM_Version::determine_features() {
  if (UseV8InstrsOnly) {
    if (PrintMiscellaneous && Verbose) { tty->print_cr("Version is Forced-V8"); }
    return generic_v8_m;
  }

  int features = platform_features(unknown_m); // platform_features() is os_arch specific

  if (features == unknown_m) {
    features = generic_v9_m;
    warning("Cannot recognize SPARC version. Default to V9");
  }

  assert(is_T_family(features) == is_niagara(features), "Niagara should be T series");
  if (UseNiagaraInstrs) { // Force code generation for Niagara
    if (is_T_family(features)) {
      // Happy to accomodate...
    } else {
      if (PrintMiscellaneous && Verbose) { tty->print_cr("Version is Forced-Niagara"); }
      features |= T_family_m;
    }
  } else {
    if (is_T_family(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) {
      if (PrintMiscellaneous && Verbose) { tty->print_cr("Version is Forced-Not-Niagara"); }
      features &= ~(T_family_m | T1_model_m);
    } else {
      // Happy to accomodate...
    }
  }

  return features;
}

示例#2

文件： vm_version_sparc.cpp 项目： arbeitspferde/openjdk9-hotspot

    }
  }
#endif // PRODUCT
}

void VM_Version::print_features() {
  tty->print_cr("Version:%s", cpu_features());
}

int VM_Version::determine_features() {
  if (UseV8InstrsOnly) {
    NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-V8");)
    return generic_v8_m;
  }

  int features = platform_features(unknown_m); // platform_features() is os_arch specific

  if (features == unknown_m) {
    features = generic_v9_m;
    warning("Cannot recognize SPARC version. Default to V9");
  }

  assert(is_T_family(features) == is_niagara(features), "Niagara should be T series");
  if (UseNiagaraInstrs) { // Force code generation for Niagara
    if (is_T_family(features)) {
      // Happy to accomodate...
    } else {
      NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Niagara");)
      features |= T_family_m;
    }
  } else {