Mercurial > hg > graal-compiler

/*
 * Copyright (c) 1997, 2010, 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.
 *
 * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

#ifndef SHARE_VM_OOPS_SYMBOLKLASS_HPP
#define SHARE_VM_OOPS_SYMBOLKLASS_HPP

#include "oops/typeArrayKlass.hpp"

// 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);
#ifndef PRODUCT
  void oop_print_on(oop obj, outputStream* st);
#endif //PRODUCT
  const char* internal_name() const;
};

#endif // SHARE_VM_OOPS_SYMBOLKLASS_HPP
author	tonyp
date	Wed, 19 Jan 2011 09:35:17 -0500
parents	f95d63e2154a
children