1 /*
   2  * Copyright (c) 2001, 2015, Oracle and/or its affiliates. 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.
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   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
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  24 
  25 #ifndef SHARE_VM_GC_SHARED_GENERATIONSPEC_HPP
  26 #define SHARE_VM_GC_SHARED_GENERATIONSPEC_HPP
  27 
  28 #include "gc/shared/generation.hpp"
  29 
  30 // The specification of a generation.  This class also encapsulates
  31 // some generation-specific behavior.  This is done here rather than as a
  32 // virtual function of Generation because these methods are needed in
  33 // initialization of the Generations.
  34 class GenerationSpec : public CHeapObj<mtGC> {
  35   friend class VMStructs;
  36 private:
  37   Generation::Name _name;
  38   size_t           _init_size;
  39   size_t           _max_size;
  40 
  41 public:
  42   GenerationSpec(Generation::Name name, size_t init_size, size_t max_size, size_t alignment) :
  43     _name(name),
  44     _init_size(align_size_up(init_size, alignment)),
  45     _max_size(align_size_up(max_size, alignment))
  46   { }
  47 
  48   Generation* init(ReservedSpace rs, CardTableRS* remset);
  49 
  50   // Accessors
  51   Generation::Name name()        const { return _name; }
  52   size_t init_size()             const { return _init_size; }
  53   void set_init_size(size_t size)      { _init_size = size; }
  54   size_t max_size()              const { return _max_size; }
  55   void set_max_size(size_t size)       { _max_size = size; }
  56 };
  57 
  58 typedef GenerationSpec* GenerationSpecPtr;
  59 
  60 #endif // SHARE_VM_GC_SHARED_GENERATIONSPEC_HPP