src/share/vm/memory/allocation.hpp

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -232,10 +232,11 @@
 // not introduce one.  This class is used to allocate both shared read-only
 // and shared read-write classes.
 //
 
 class ClassLoaderData;
+class MetaspaceClosure;
 
 class MetaspaceObj {
  public:
   bool is_metaspace_object() const;
   bool is_shared() const;

@@ -253,13 +254,12 @@
   f(Method) \
   f(ConstMethod) \
   f(MethodData) \
   f(ConstantPool) \
   f(ConstantPoolCache) \
-  f(Annotation) \
-  f(MethodCounters) \
-  f(Deallocated)
+  f(Annotations) \
+  f(MethodCounters)
 
 #define METASPACE_OBJ_TYPE_DECLARE(name) name ## Type,
 #define METASPACE_OBJ_TYPE_NAME_CASE(name) case name ## Type: return #name;
 
   enum Type {

@@ -287,14 +287,19 @@
       return TypeArrayOtherType;
     }
   }
 
   void* operator new(size_t size, ClassLoaderData* loader_data,
-                     size_t word_size, bool read_only,
+                     size_t word_size,
                      Type type, Thread* thread) throw();
                      // can't use TRAPS from this header file.
   void operator delete(void* p) { ShouldNotCallThis(); }
+
+  // Declare a *static* method with the same signature in any subclass of MetaspaceObj
+  // that should be read-only by default. See symbol.hpp for an example. This function
+  // is used by the templates in metaspaceClosure.hpp
+  static bool is_read_only_by_default() { return false; }
 };
 
 // Base class for classes that constitute name spaces.
 
 class AllStatic {