/*

 * Copyright 2003 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.

 *

 */

class ASPSOldGen : public PSOldGen {

  friend class VMStructs;

  size_t _gen_size_limit;  // Largest size the generation's reserved size

                           // can grow.

 public:

  ASPSOldGen(size_t initial_byte_size,

             size_t minimum_byte_size,

             size_t byte_size_limit,

             const char* gen_name, int level);

  ASPSOldGen(PSVirtualSpace* vs,

             size_t initial_byte_size,

             size_t minimum_byte_size,

             size_t byte_size_limit,

             const char* gen_name, int level);

  size_t gen_size_limit()               { return _gen_size_limit; }

  size_t max_gen_size()                 { return _reserved.byte_size(); }

  void set_gen_size_limit(size_t v)     { _gen_size_limit = v; }

  // After a shrink or expand reset the generation

  void reset_after_change();

  // Return number of bytes that the virtual space in the generation is willing

  // to expand or contract.  The results from these methods should feed into the

  // decisions about adjusting the virtual space.

  size_t available_for_expansion();

  size_t available_for_contraction();

  // Accessors

  void set_reserved(MemRegion v) { _reserved = v; }

  // Debugging support

  virtual const char* short_name() const { return "ASPSOldGen"; }

};