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_BITMAPFASTALLOCATOR_H
   5 #define CEPH_OS_BLUESTORE_BITMAPFASTALLOCATOR_H
   6
   7 #include <mutex>
   8
   9 #include "Allocator.h"
  10 #include "os/bluestore/bluestore_types.h"
  11 #include "fastbmap_allocator_impl.h"
  12 #include "include/mempool.h"
  13 #include "common/debug.h"
  14
  15 class BitmapAllocator : public Allocator,
  16   public AllocatorLevel02<AllocatorLevel01Loose> {
  17   CephContext* cct;
  18
  19 public:
  20   BitmapAllocator(CephContext* _cct, int64_t capacity, int64_t alloc_unit, const std::string& name);
  21   ~BitmapAllocator() override
  22   {
  23   }
  24
  25   const char* get_type() const override
  26   {
  27     return "bitmap";
  28   }
  29   int64_t allocate(
  30     uint64_t want_size, uint64_t alloc_unit, uint64_t max_alloc_size,
  31     int64_t hint, PExtentVector *extents) override;
  32
  33   void release(
  34     const interval_set<uint64_t>& release_set) override;
  35
  36   using Allocator::release;
  37
  38   uint64_t get_free() override
  39   {
  40     return get_available();
  41   }
  42
  43   void dump() override;
  44   void dump(std::function<void(uint64_t offset, uint64_t length)> notify) override;
  45   double get_fragmentation() override
  46   {
  47     return _get_fragmentation();
  48   }
  49
  50   void init_add_free(uint64_t offset, uint64_t length) override;
  51   void init_rm_free(uint64_t offset, uint64_t length) override;
  52
  53   void shutdown() override;
  54 };
  55
  56 #endif