src/share/vm/memory/allocation.hpp

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2016, 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.
--- 1,7 ----
  /*
!  * 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.
*** 232,241 ****
--- 232,242 ----
  // 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;
*** 253,265 ****
    f(Method) \
    f(ConstMethod) \
    f(MethodData) \
    f(ConstantPool) \
    f(ConstantPoolCache) \
!   f(Annotation) \
!   f(MethodCounters) \
!   f(Deallocated)
  
  #define METASPACE_OBJ_TYPE_DECLARE(name) name ## Type,
  #define METASPACE_OBJ_TYPE_NAME_CASE(name) case name ## Type: return #name;
  
    enum Type {
--- 254,265 ----
    f(Method) \
    f(ConstMethod) \
    f(MethodData) \
    f(ConstantPool) \
    f(ConstantPoolCache) \
!   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 {
*** 287,300 ****
        return TypeArrayOtherType;
      }
    }
  
    void* operator new(size_t size, ClassLoaderData* loader_data,
!                      size_t word_size, bool read_only,
                       Type type, Thread* thread) throw();
                       // can't use TRAPS from this header file.
    void operator delete(void* p) { ShouldNotCallThis(); }
  };
  
  // Base class for classes that constitute name spaces.
  
  class AllStatic {
--- 287,305 ----
        return TypeArrayOtherType;
      }
    }
  
    void* operator new(size_t size, ClassLoaderData* loader_data,
!                      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 {