ceph/src/os/bluestore/FreelistManager.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #ifndef CEPH_OS_BLUESTORE_FREELISTMANAGER_H
   5 #define CEPH_OS_BLUESTORE_FREELISTMANAGER_H
   6
   7 #include <string>
   8 #include <map>
   9 #include <mutex>
  10 #include <ostream>
  11 #include "kv/KeyValueDB.h"
  12
  13 class FreelistManager {
  14 public:
  15   CephContext* cct;
  16   FreelistManager(CephContext* cct) : cct(cct) {}
  17   virtual ~FreelistManager() {}
  18
  19   static FreelistManager *create(
  20     CephContext* cct,
  21     string type,
  22     KeyValueDB *db,
  23     string prefix);
  24
  25   static void setup_merge_operators(KeyValueDB *db);
  26
  27   virtual int create(uint64_t size, uint64_t granularity,
  28                      KeyValueDB::Transaction txn) = 0;
  29
  30   virtual int init(uint64_t dev_size) = 0;
  31   virtual void shutdown() = 0;
  32
  33   virtual void dump() = 0;
  34
  35   virtual void enumerate_reset() = 0;
  36   virtual bool enumerate_next(uint64_t *offset, uint64_t *length) = 0;
  37
  38   virtual void allocate(
  39     uint64_t offset, uint64_t length,
  40     KeyValueDB::Transaction txn) = 0;
  41   virtual void release(
  42     uint64_t offset, uint64_t length,
  43     KeyValueDB::Transaction txn) = 0;
  44
  45   virtual uint64_t get_alloc_units() const = 0;
  46   virtual uint64_t get_alloc_size() const = 0;
  47
  48 };
  49
  50
  51 #endif