8317466: Enable interpreter oopMapCache for concurrent GCs

src/hotspot/share/gc/shenandoah/shenandoahVMOperations.cpp

@@ -35,13 +35,17 @@
 #include "interpreter/oopMapCache.hpp"
 #include "memory/universe.hpp"
 
+void VM_ShenandoahOperation::doit_epilogue() {
+  OopMapCache::cleanup_old_entries();
+}
+
 bool VM_ShenandoahReferenceOperation::doit_prologue() {
   Heap_lock->lock();
   return true;
 }
 
 void VM_ShenandoahReferenceOperation::doit_epilogue() {
-  OopMapCache::cleanup_old_entries();
+  VM_ShenandoahOperation::doit_epilogue();
   if (Universe::has_reference_pending_list()) {
     Heap_lock->notify_all();
   }

src/hotspot/share/gc/shenandoah/shenandoahVMOperations.hpp

@@ -48,6 +48,7 @@ class VM_ShenandoahOperation : public VM_Operation {
 public:
   VM_ShenandoahOperation() : _gc_id(GCId::current()) {};
   virtual bool skip_thread_oop_barriers() const { return true; }
+  virtual void doit_epilogue();
 };
 
 class VM_ShenandoahReferenceOperation : public VM_ShenandoahOperation {