1 files changed, 9 insertions, 12 deletions

diff --git a/ractor.c b/ractor.c
index 8c4f06a6b0..b8564199d5 100644
--- a/ractor.c
+++ b/ractor.c
@@ -18,18 +18,14 @@
 #include "transient_heap.h"
 
 VALUE rb_cRactor;
+
+VALUE rb_eRactorUnsafeError;
+VALUE rb_eRactorIsolationError;
 static VALUE rb_eRactorError;
 static VALUE rb_eRactorRemoteError;
 static VALUE rb_eRactorMovedError;
 static VALUE rb_eRactorClosedError;
 static VALUE rb_cRactorMovedObject;
-VALUE rb_eRactorUnsafeError;
-
-VALUE
-rb_ractor_error_class(void)
-{
-    return rb_eRactorError;
-}
 
 static void vm_ractor_blocking_cnt_inc(rb_vm_t *vm, rb_ractor_t *r, const char *file, int line);
 
@@ -2023,11 +2019,12 @@ void
 Init_Ractor(void)
 {
     rb_cRactor = rb_define_class("Ractor", rb_cObject);
-    rb_eRactorError       = rb_define_class_under(rb_cRactor, "Error", rb_eRuntimeError);
-    rb_eRactorRemoteError = rb_define_class_under(rb_cRactor, "RemoteError", rb_eRactorError);
-    rb_eRactorMovedError  = rb_define_class_under(rb_cRactor, "MovedError",  rb_eRactorError);
-    rb_eRactorClosedError = rb_define_class_under(rb_cRactor, "ClosedError", rb_eStopIteration);
-    rb_eRactorUnsafeError = rb_define_class_under(rb_cRactor, "UnsafeError", rb_eRactorError);
+    rb_eRactorError          = rb_define_class_under(rb_cRactor, "Error", rb_eRuntimeError);
+    rb_eRactorIsolationError = rb_define_class_under(rb_cRactor, "IsolationError", rb_eRactorError);
+    rb_eRactorRemoteError    = rb_define_class_under(rb_cRactor, "RemoteError", rb_eRactorError);
+    rb_eRactorMovedError     = rb_define_class_under(rb_cRactor, "MovedError",  rb_eRactorError);
+    rb_eRactorClosedError    = rb_define_class_under(rb_cRactor, "ClosedError", rb_eStopIteration);
+    rb_eRactorUnsafeError    = rb_define_class_under(rb_cRactor, "UnsafeError", rb_eRactorError);
 
     rb_cRactorMovedObject = rb_define_class_under(rb_cRactor, "MovedObject", rb_cBasicObject);
     rb_undef_alloc_func(rb_cRactorMovedObject);