1 /*

     2  * Copyright 2000-2003 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 class ContigPermSpace;

    26 class CardTableModRefBS;

    27 class CompactingPermGenGen;

    28 class PermanentGenerationSpec;

    29 

    30 // A PermGen implemented with a contiguous space.

    31 class CompactingPermGen:  public PermGen {

    32   friend class VMStructs;

    33 protected:

    34   // The "generation" view.

    35   OneContigSpaceCardGeneration* _gen;

    36 

    37 public:

    38   CompactingPermGen(ReservedSpace rs, ReservedSpace shared_rs,

    39                     size_t initial_byte_size, GenRemSet* remset,

    40                     PermanentGenerationSpec* perm_spec);

    41 

    42   HeapWord* mem_allocate(size_t size);

    43 

    44   void compute_new_size();

    45 

    46   Generation* as_gen() const { return _gen; }

    47 

    48 };