ceph/src/os/bluestore/BitMapAllocator.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_BITMAPALLOCATOR_H
   5 #define CEPH_OS_BLUESTORE_BITMAPALLOCATOR_H
   6
   7 #include <mutex>
   8
   9 #include "Allocator.h"
  10 #include "BitAllocator.h"
  11 #include "include/btree_interval_set.h"
  12
  13 class BitMapAllocator : public Allocator {
  14   CephContext* cct;
  15
  16   int64_t m_block_size;
  17   int64_t m_total_size;
  18
  19   BitAllocator *m_bit_alloc; // Bit allocator instance
  20
  21   void insert_free(uint64_t offset, uint64_t len);
  22
  23   int64_t allocate_dis(
  24     uint64_t want_size, uint64_t alloc_unit, uint64_t max_alloc_size,
  25     int64_t hint, mempool::bluestore_alloc::vector<AllocExtent> *extents);
  26
  27 public:
  28   BitMapAllocator(CephContext* cct, int64_t device_size, int64_t block_size);
  29   ~BitMapAllocator() override;
  30
  31   int reserve(uint64_t need) override;
  32   void unreserve(uint64_t unused) override;
  33
  34   int64_t allocate(
  35     uint64_t want_size, uint64_t alloc_unit, uint64_t max_alloc_size,
  36     int64_t hint, mempool::bluestore_alloc::vector<AllocExtent> *extents) override;
  37
  38   void release(
  39     uint64_t offset, uint64_t length) override;
  40
  41   uint64_t get_free() override;
  42
  43   void dump() override;
  44
  45   void init_add_free(uint64_t offset, uint64_t length) override;
  46   void init_rm_free(uint64_t offset, uint64_t length) override;
  47
  48   void shutdown() override;
  49 };
  50
  51 #endif