~mathiaz/+junk/ceph-new-pkg-review

// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 

// vim: ts=8 sw=2 smarttab

#ifndef CEPH_AGER_H

#define CEPH_AGER_H

#include "include/types.h"

#include "include/Distribution.h"

#include "os/ObjectStore.h"

#include "common/Clock.h"

#include <list>

#include <vector>

using namespace std;

class Ager {

  ObjectStore *store;

 private:

  list<file_object_t>           age_free_oids;

  file_object_t                 age_cur_oid;

  vector< list<file_object_t> > age_objects;

  Distribution file_size_distn; //kb

  bool         did_distn;

  void age_empty(float pc);

  uint64_t age_fill(float pc, utime_t until);

  ssize_t age_pick_size();

  file_object_t age_get_oid();

 public:

  Ager(ObjectStore *s) : store(s), did_distn(false) {} 

  void age(int time,

           float high_water,    // fill to this %

          float low_water,     // then empty to this %

          int count,         // this many times

          float final_water,   // and end here ( <= low_water)

          int fake_size_mb=0);

  void save_freelist(int);

  void load_freelist();

};

#endif