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_CACHE_SIMPLE_POLICY_H
5 #define CEPH_CACHE_SIMPLE_POLICY_H
6
7 #include "common/ceph_context.h"
8 #include "common/ceph_mutex.h"
9 #include "include/lru.h"
10 #include "Policy.h"
11
12 #include <unordered_map>
13 #include <string>
14
15 namespace ceph {
16 namespace immutable_obj_cache {
17
18 class SimplePolicy : public Policy {
19 public:
20 SimplePolicy(CephContext *cct, uint64_t block_num, uint64_t max_inflight,
21 double watermark);
22 ~SimplePolicy();
23
24 cache_status_t lookup_object(std::string file_name);
25 cache_status_t get_status(std::string file_name);
26
27 void update_status(std::string file_name,
28 cache_status_t new_status,
29 uint64_t size = 0);
30
31 int evict_entry(std::string file_name);
32
33 void get_evict_list(std::list<std::string>* obj_list);
34
35 uint64_t get_free_size();
36 uint64_t get_promoting_entry_num();
37 uint64_t get_promoted_entry_num();
38 std::string get_evict_entry();
39
40 private:
41 cache_status_t alloc_entry(std::string file_name);
42
43 class Entry : public LRUObject {
44 public:
45 cache_status_t status;
|
(2) Event uninit_member: |
Non-static class member "size" is not initialized in this constructor nor in any functions that it calls. |
| Also see events: |
[member_decl] |
46 Entry() : status(OBJ_CACHE_NONE) {}
47 std::string file_name;
|
(1) Event member_decl: |
Class member declaration for "size". |
| Also see events: |
[uninit_member] |
48 uint64_t size;
49 };
50
51 CephContext* cct;
52 double m_watermark;
53 uint64_t m_max_inflight_ops;
54 uint64_t m_max_cache_size;
55 std::atomic<uint64_t> inflight_ops = 0;
56
57 std::unordered_map<std::string, Entry*> m_cache_map;
58 ceph::shared_mutex m_cache_map_lock =
59 ceph::make_shared_mutex("rbd::cache::SimplePolicy::m_cache_map_lock");
60
61 std::atomic<uint64_t> m_cache_size;
62
63 LRU m_promoted_lru;
64 };
65
66 } // namespace immutable_obj_cache
67 } // namespace ceph
68 #endif // CEPH_CACHE_SIMPLE_POLICY_H
69