/*

 * Copyright (c) 2001, 2012, 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.

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#ifndef SHARE_VM_MEMORY_GENERATIONSPEC_HPP

#define SHARE_VM_MEMORY_GENERATIONSPEC_HPP

#include "memory/generation.hpp"

// The specification of a generation.  This class also encapsulates

// some generation-specific behavior.  This is done here rather than as a

// virtual function of Generation because these methods are needed in

// initialization of the Generations.

class GenerationSpec : public CHeapObj<mtGC> {

  friend class VMStructs;

private:

  Generation::Name _name;

  size_t           _init_size;

  size_t           _max_size;

public:

  GenerationSpec(Generation::Name name, size_t init_size, size_t max_size) {

    _name = name;

    _init_size = init_size;

    _max_size = max_size;

  }

  Generation* init(ReservedSpace rs, int level, GenRemSet* remset);

  // Accessors

  Generation::Name name()        const { return _name; }

  size_t init_size()             const { return _init_size; }

  void set_init_size(size_t size)      { _init_size = size; }

  size_t max_size()              const { return _max_size; }

  void set_max_size(size_t size)       { _max_size = size; }

  // Alignment

  void align(size_t alignment) {

    set_init_size(align_size_up(init_size(), alignment));

    set_max_size(align_size_up(max_size(), alignment));

  }

  // Return the number of regions contained in the generation which

  // might need to be independently covered by a remembered set.

  virtual int n_covered_regions() const { return 1; }

};

typedef GenerationSpec* GenerationSpecPtr;

#endif // SHARE_VM_MEMORY_GENERATIONSPEC_HPP