text: /**
   *  Copyright (c) 2019 Intel Corporation
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License. 
   */
  
  #pragma once
  
  #include <libpmemobj++/make_persistent.hpp>
  #include <libpmemobj++/p.hpp>
  #include <libpmemobj++/persistent_ptr.hpp>
  #include <libpmemobj++/pool.hpp>
  #include <libpmemobj++/transaction.hpp>
  
  namespace DaqDB {
  
  using pmem::obj::p;
  using pmem::obj::persistent_ptr;
  using pmem::obj::pool;
  using pmem::obj::pool_base;
  using pmem::obj::make_persistent;
  using pmem::obj::delete_persistent;
  using pmem::obj::transaction;
  
  class OffloadFreeList {
  
      /* entry in the list */
      struct FreeLba {
          persistent_ptr<FreeLba> next;
          p<int64_t> lba;
      };
  
    public:
      OffloadFreeList() {};
      ~OffloadFreeList() {};
  
      void push(pool_base &pop, int64_t value);
      int64_t get(pool_base &pop);
      void clear(pool_base &pop);
      void show(void) const;
  
      uint64_t maxLba = 0;
  
    private:
  
      persistent_ptr<FreeLba> _head;
      persistent_ptr<FreeLba> _tail;
  };
  
  }
  