Add type manager synchronization comment.
This Cl adds a comment about the type manager being a singleton and
synchronization requirements.
Change-Id: I91618516b26c18aa6b47e7e564b4b3a8eecc1009
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/17740
Reviewed-by: David Neto <dneto@google.com>
diff --git a/src/type_manager.h b/src/type_manager.h
index 573542a..a518b22 100644
--- a/src/type_manager.h
+++ b/src/type_manager.h
@@ -24,6 +24,9 @@
namespace tint {
/// The type manager holds all the pointers to the known types.
+///
+/// Note, the type manager is a singleton. Any synchronization for the manager
+/// must be done by the caller.
class TypeManager {
public:
/// @returns a pointer to the type manager
