asPSYoungGen.hpp

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSYOUNGGEN_HPP
#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSYOUNGGEN_HPP

#include "gc_implementation/parallelScavenge/objectStartArray.hpp"
#include "gc_implementation/parallelScavenge/psVirtualspace.hpp"
#include "gc_implementation/parallelScavenge/psYoungGen.hpp"
#include "gc_implementation/shared/generationCounters.hpp"
#include "gc_implementation/shared/mutableSpace.hpp"
#include "gc_implementation/shared/spaceCounters.hpp"
#include "gc_implementation/shared/spaceDecorator.hpp"

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"; }
};

#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSYOUNGGEN_HPP