src/hotspot/share/gc/z/zRelocationSet.hpp

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

#include "gc/z/zArray.hpp"
#include "gc/z/zForwardingAllocator.hpp"
#include "gc/z/zLock.hpp"

class ZForwarding;
class ZGeneration;
class ZPage;
class ZPageAllocator;
class ZRelocationSetSelector;
class ZWorkers;

class ZRelocationSet {
  template <bool> friend class ZRelocationSetIteratorImpl;

private:
  ZGeneration*         _generation;
  ZForwardingAllocator _allocator;
  ZForwarding**        _forwardings;
  size_t               _nforwardings;
  ZLock                _promotion_lock;
  ZArray<ZPage*>       _flip_promoted_pages;
  ZArray<ZPage*>       _in_place_relocate_promoted_pages;

  ZWorkers* workers() const;

public:
  ZRelocationSet(ZGeneration* generation);

  void install(const ZRelocationSetSelector* selector);
  void reset(ZPageAllocator* page_allocator);
  ZGeneration* generation() const;
  ZArray<ZPage*>* flip_promoted_pages();

  void register_flip_promoted(const ZArray<ZPage*>& pages);
  void register_in_place_relocate_promoted(ZPage* page);
};

template <bool Parallel>
class ZRelocationSetIteratorImpl : public ZArrayIteratorImpl<ZForwarding*, Parallel> {
public:
  ZRelocationSetIteratorImpl(ZRelocationSet* relocation_set);
};

using ZRelocationSetIterator = ZRelocationSetIteratorImpl<false /* Parallel */>;
using ZRelocationSetParallelIterator = ZRelocationSetIteratorImpl<true /* Parallel */>;

#endif // SHARE_GC_Z_ZRELOCATIONSET_HPP