Efficency core information blocked before Windows 10.

win32ss · Mar 8, 2024 · 2058c67 · 2058c67
1 parent 25cef38
commit 2058c67
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/base/system/sys_info_win.cc b/base/system/sys_info_win.cc
@@ -153,6 +153,9 @@ int SysInfo::NumberOfProcessors() {
 
 // static
 int SysInfo::NumberOfEfficientProcessorsImpl() {
+  // No efficiency support before Windows 10.
+  if (win::GetVersion() < win::Version::WIN10)
+	  return 0;
   std::vector<BYTE> efficiency_classes = GetCoreEfficiencyClasses();
   if (efficiency_classes.empty())
     return 0;