/*

 * Copyright (c) 2015, 2019, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#ifndef SHARE_GC_Z_ZPAGE_HPP

#define SHARE_GC_Z_ZPAGE_HPP

#include "gc/z/zList.hpp"

#include "gc/z/zLiveMap.hpp"

#include "gc/z/zPhysicalMemory.hpp"

#include "gc/z/zVirtualMemory.hpp"

#include "memory/allocation.hpp"

class ZPage : public CHeapObj<mtGC> {

  friend class VMStructs;

  friend class ZList<ZPage>;

private:

  uint8_t            _type;

  uint8_t            _numa_id;

  uint32_t           _seqnum;

  ZVirtualMemory     _virtual;

  volatile uintptr_t _top;

  ZLiveMap           _livemap;

  uint64_t           _last_used;

  ZPhysicalMemory    _physical;

  ZListNode<ZPage>   _node;

  void assert_initialized() const;

  uint8_t type_from_size(size_t size) const;

  const char* type_to_string() const;

  bool is_object_marked(uintptr_t addr) const;

  bool is_object_strongly_marked(uintptr_t addr) const;

public:

  ZPage(const ZVirtualMemory& vmem, const ZPhysicalMemory& pmem);

  ZPage(uint8_t type, const ZVirtualMemory& vmem, const ZPhysicalMemory& pmem);

  uint32_t object_max_count() const;

  size_t object_alignment_shift() const;

  size_t object_alignment() const;

  uint8_t type() const;

  uintptr_t start() const;

  uintptr_t end() const;

  size_t size() const;

  uintptr_t top() const;

  size_t remaining() const;

  const ZPhysicalMemory& physical_memory() const;

  const ZVirtualMemory& virtual_memory() const;

  uint8_t numa_id();

  bool is_allocating() const;

  bool is_relocatable() const;

  bool is_mapped() const;

  void set_pre_mapped();

  uint64_t last_used() const;

  void set_last_used();

  void reset();

  ZPage* retype(uint8_t type);

  ZPage* split(size_t size);

  ZPage* split(uint8_t type, size_t size);

  bool is_in(uintptr_t addr) const;

  bool is_marked() const;

  bool is_object_live(uintptr_t addr) const;

  bool is_object_strongly_live(uintptr_t addr) const;

  bool mark_object(uintptr_t addr, bool finalizable, bool& inc_live);

  void inc_live_atomic(uint32_t objects, size_t bytes);

  uint32_t live_objects() const;

  size_t live_bytes() const;

  void object_iterate(ObjectClosure* cl);

  uintptr_t alloc_object(size_t size);

  uintptr_t alloc_object_atomic(size_t size);

  bool undo_alloc_object(uintptr_t addr, size_t size);

  bool undo_alloc_object_atomic(uintptr_t addr, size_t size);

  void print_on(outputStream* out) const;

  void print() const;

};

#endif // SHARE_GC_Z_ZPAGE_HPP