/*

 * 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 ASPSYoungGen : public PSYoungGen {

  friend class VMStructs;

 private:

  size_t _gen_size_limit;

 protected:

  virtual size_t available_to_live();

 public:

  ASPSYoungGen(size_t         initial_byte_size,

               size_t         minimum_byte_size,

               size_t         byte_size_limit);

  ASPSYoungGen(PSVirtualSpace* vs,

               size_t         initial_byte_size,

               size_t         minimum_byte_size,

               size_t         byte_size_limit);

  void initialize(ReservedSpace rs, size_t alignment);

  void initialize_virtual_space(ReservedSpace rs, size_t alignment);

  size_t gen_size_limit() { return _gen_size_limit; }

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

  bool resize_generation(size_t eden_size, size_t survivor_size);

  void resize_spaces(size_t eden_size, size_t survivor_size);

  // Adjust eden to be consistent with the virtual space.

  void reset_after_change();

  // Adaptive size policy support

  // Return number of bytes that the generation can expand/contract.

  size_t available_for_expansion();

  size_t available_for_contraction();

  // Accessors

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

  // Printing support

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

};