1 /*

     2  * Copyright 2003-2006 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * have any questions.

    22  *

    23  */

    24 

    25 // A constMethodKlass is the klass of a constMethodOop

    26 

    27 class constMethodKlass : public Klass {

    28   friend class VMStructs;

    29 private:

    30   juint    _alloc_size;        // allocation profiling support

    31 public:

    32   // Testing

    33   bool oop_is_constMethod() const { return true; }

    34   virtual bool oop_is_parsable(oop obj) const;

    35 

    36   // Allocation

    37   DEFINE_ALLOCATE_PERMANENT(constMethodKlass);

    38   constMethodOop allocate(int byte_code_size, int compressed_line_number_size,

    39                           int localvariable_table_length,

    40                           int checked_exceptions_length, TRAPS);

    41   static klassOop create_klass(TRAPS);

    42 

    43   // Sizing

    44   int oop_size(oop obj) const;

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

    46 

    47   // Casting from klassOop

    48   static constMethodKlass* cast(klassOop k) {

    49     assert(k->klass_part()->oop_is_constMethod(), "cast to constMethodKlass");

    50     return (constMethodKlass*) k->klass_part();

    51   }

    52 

    53   // Sizing

    54   static int header_size() {

    55     return oopDesc::header_size() + sizeof(constMethodKlass)/HeapWordSize;

    56   }

    57   int object_size() const {

    58     return align_object_size(header_size());

    59   }

    60 

    61   // Garbage collection

    62   void oop_follow_contents(oop obj);

    63   int  oop_adjust_pointers(oop obj);

    64 

    65   // Parallel Scavenge and Parallel Old

    66   PARALLEL_GC_DECLS

    67 

    68   // Allocation profiling support

    69   juint alloc_size() const              { return _alloc_size; }

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

    71 

    72   // Iterators

    73   int oop_oop_iterate(oop obj, OopClosure* blk);

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

    75 

    76 #ifndef PRODUCT

    77  public:

    78   // Printing

    79   void oop_print_on      (oop obj, outputStream* st);

    80   void oop_print_value_on(oop obj, outputStream* st);

    81 

    82 #endif

    83 

    84  public:

    85   // Verify operations

    86   const char* internal_name() const;

    87   void oop_verify_on(oop obj, outputStream* st);

    88   bool oop_partially_loaded(oop obj) const;

    89   void oop_set_partially_loaded(oop obj);

    90 };