[core] Guard gInterpreterMutex in TClingClassInfo::IsEnum

Fixes root-project#11515 This method leads to contention in some specific scenarios (see linked issue). Co-authored-by: Philippe Canal <[email protected]>
vepadulano · Oct 18, 2022 · cd09b28 · cd09b28
1 parent 29f0497
commit cd09b28
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/core/metacling/src/TClingClassInfo.cxx b/core/metacling/src/TClingClassInfo.cxx
@@ -813,6 +813,7 @@ bool TClingClassInfo::IsBase(const char *name) const
 
 bool TClingClassInfo::IsEnum(cling::Interpreter *interp, const char *name)
 {
+   R__LOCKGUARD(gInterpreterMutex);
    // Note: This is a static member function.
    TClingClassInfo info(interp, name);
    if (info.IsValid() && (info.Property() & kIsEnum)) {