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1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #ifndef CEPH_OS_BLUESTORE_STUPIDALLOCATOR_H
5 #define CEPH_OS_BLUESTORE_STUPIDALLOCATOR_H
10 #include "include/btree_interval_set.h"
11 #include "os/bluestore/bluestore_types.h"
12 #include "include/mempool.h"
14 class StupidAllocator
: public Allocator
{
18 int64_t num_free
; ///< total bytes in freelist
19 int64_t num_reserved
; ///< reserved bytes
21 typedef mempool::bluestore_alloc::pool_allocator
<
22 pair
<const uint64_t,uint64_t>> allocator
;
23 std::vector
<btree_interval_set
<uint64_t,allocator
>> free
; ///< leading-edge copy
27 unsigned _choose_bin(uint64_t len
);
28 void _insert_free(uint64_t offset
, uint64_t len
);
30 uint64_t _aligned_len(
31 btree_interval_set
<uint64_t,allocator
>::iterator p
,
35 StupidAllocator(CephContext
* cct
);
36 ~StupidAllocator() override
;
38 int reserve(uint64_t need
) override
;
39 void unreserve(uint64_t unused
) override
;
42 uint64_t want_size
, uint64_t alloc_unit
, uint64_t max_alloc_size
,
43 int64_t hint
, mempool::bluestore_alloc::vector
<AllocExtent
> *extents
) override
;
46 uint64_t want_size
, uint64_t alloc_unit
, int64_t hint
,
47 uint64_t *offset
, uint32_t *length
);
50 uint64_t offset
, uint64_t length
) override
;
52 uint64_t get_free() override
;
56 void init_add_free(uint64_t offset
, uint64_t length
) override
;
57 void init_rm_free(uint64_t offset
, uint64_t length
) override
;
59 void shutdown() override
;