hotspot/src/share/vm/oops/instanceKlassKlass.hpp
author jcoomes
Thu, 13 Aug 2009 16:22:45 -0700
changeset 3694 942b7bc7f28c
parent 3693 af387bf37e8d
child 3795 6227ff014cfe
permissions -rw-r--r--
6845368: large objects cause a crash or unexpected exception Reviewed-by: jmasa, iveresov
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/*
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 * Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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// An instanceKlassKlass is the klass of an instanceKlass
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class instanceKlassKlass : public klassKlass {
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  // Dispatched operation
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  bool oop_is_klass() const           { return true; }
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  bool oop_is_instanceKlass() const   { return true; }
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  int oop_size(oop obj) const;
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  int klass_oop_size() const    { return object_size(); }
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  // Allocation
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  DEFINE_ALLOCATE_PERMANENT(instanceKlassKlass);
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  static klassOop create_klass(TRAPS);
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  klassOop allocate_instance_klass(int vtable_len,
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                                   int itable_len,
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                                   int static_field_size,
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                                   unsigned int nonstatic_oop_map_count,
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                                   ReferenceType rt,
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                                   TRAPS);
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  // Casting from klassOop
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  static instanceKlassKlass* cast(klassOop k) {
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    assert(k->klass_part()->oop_is_klass(), "cast to instanceKlassKlass");
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    return (instanceKlassKlass*) k->klass_part();
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  }
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  // Sizing
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  static int header_size()    { return oopDesc::header_size() + sizeof(instanceKlassKlass)/HeapWordSize; }
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  int object_size() const     { return align_object_size(header_size()); }
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  // Garbage collection
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  void oop_follow_contents(oop obj);
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  int  oop_adjust_pointers(oop obj);
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  bool oop_is_parsable(oop obj) const;
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  // Parallel Scavenge and Parallel Old
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  PARALLEL_GC_DECLS
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  // Iterators
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  int oop_oop_iterate(oop obj, OopClosure* blk);
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  int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
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  // Apply closure to the InstanceKlass oops that are outside the java heap.
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  inline void iterate_c_heap_oops(instanceKlass* ik, OopClosure* closure);
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#ifndef PRODUCT
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  // Printing
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  void oop_print_on(oop obj, outputStream* st);
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  void oop_print_value_on(oop obj, outputStream* st);
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#endif
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  // Verification
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  const char* internal_name() const;
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  void oop_verify_on(oop obj, outputStream* st);
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  // tells whether obj is partially constructed (gc during class loading)
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  bool oop_partially_loaded(oop obj) const;
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  void oop_set_partially_loaded(oop obj);
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};