hotspot/src/share/vm/gc/parallel/asPSYoungGen.hpp
author pliden
Wed, 13 May 2015 15:16:06 +0200
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8079792: GC directory structure cleanup Reviewed-by: brutisso, stefank, david
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/*
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 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_GC_PARALLEL_ASPSYOUNGGEN_HPP
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#define SHARE_VM_GC_PARALLEL_ASPSYOUNGGEN_HPP
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#include "gc/parallel/mutableSpace.hpp"
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#include "gc/parallel/objectStartArray.hpp"
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#include "gc/parallel/psVirtualspace.hpp"
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#include "gc/parallel/psYoungGen.hpp"
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#include "gc/parallel/spaceCounters.hpp"
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#include "gc/shared/generationCounters.hpp"
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#include "gc/shared/spaceDecorator.hpp"
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class ASPSYoungGen : public PSYoungGen {
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  friend class VMStructs;
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 private:
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  size_t _gen_size_limit;
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 protected:
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  virtual size_t available_to_live();
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 public:
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  ASPSYoungGen(size_t         initial_byte_size,
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               size_t         minimum_byte_size,
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               size_t         byte_size_limit);
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  ASPSYoungGen(PSVirtualSpace* vs,
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               size_t         initial_byte_size,
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               size_t         minimum_byte_size,
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               size_t         byte_size_limit);
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  void initialize(ReservedSpace rs, size_t alignment);
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  void initialize_virtual_space(ReservedSpace rs, size_t alignment);
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  size_t gen_size_limit() { return _gen_size_limit; }
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  void set_gen_size_limit(size_t v) { _gen_size_limit = v; }
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  bool resize_generation(size_t eden_size, size_t survivor_size);
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  void resize_spaces(size_t eden_size, size_t survivor_size);
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  // Adjust eden to be consistent with the virtual space.
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  void reset_after_change();
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  // Adaptive size policy support
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  // Return number of bytes that the generation can expand/contract.
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  size_t available_for_expansion();
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  size_t available_for_contraction();
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  // Accessors
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  void set_reserved(MemRegion v) { _reserved = v; }
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  // Printing support
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  virtual const char* short_name() const { return "ASPSYoungGen"; }
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};
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#endif // SHARE_VM_GC_PARALLEL_ASPSYOUNGGEN_HPP