/*

 * Copyright 1997-2006 Sun Microsystems, Inc.  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.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

// a symbolKlass is the klass for a symbolOop

class symbolKlass : public Klass {

  friend class VMStructs;

 private:

  juint    _alloc_size;        // allocation profiling support

 public:

  // Allocation

  DEFINE_ALLOCATE_PERMANENT(symbolKlass);

  static klassOop create_klass(TRAPS);

  symbolOop allocate_symbol(u1* name, int len, TRAPS);   // Assumes no characters larger than 0x7F

  bool allocate_symbols(int names_count, const char** names, int* lengths, symbolOop* sym_oops, TRAPS);

  // Test operation

  bool oop_is_symbol() const { return true; }

  // Casting from klassOop

  static symbolKlass* cast(klassOop k) {

    assert(k->klass_part()->oop_is_symbol(), "cast to symbolKlass");

    return (symbolKlass*) k->klass_part();

  }

  static int header_size()       { return oopDesc::header_size() + sizeof(symbolKlass)/HeapWordSize; }

  int oop_size(oop obj) const;

  int klass_oop_size() const     { return object_size(); }

  int object_size() const        { return align_object_size(header_size()); }

    // Garbage collection

  void oop_follow_contents(oop obj);

  int  oop_adjust_pointers(oop obj);

  bool oop_is_parsable(oop obj) const;

  // Parallel Scavenge and Parallel Old

  PARALLEL_GC_DECLS

  // Allocation profiling support

  juint alloc_size() const              { return _alloc_size; }

  void set_alloc_size(juint n)          { _alloc_size = n; }

  // Iterators

  int  oop_oop_iterate(oop obj, OopClosure* blk);

  int  oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);

  // Printing

  void oop_print_value_on(oop obj, outputStream* st);

  void oop_print_on(oop obj, outputStream* st);

  const char* internal_name() const;

};