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Diffstat (limited to '')
-rw-r--r-- | src/unstable/cacheobject.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/unstable/cacheobject.h b/src/unstable/cacheobject.h new file mode 100644 index 0000000..0088685 --- /dev/null +++ b/src/unstable/cacheobject.h | |||
@@ -0,0 +1,84 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2007-2013 Xagasoft, All rights reserved. | ||
3 | * | ||
4 | * This file is part of the libbu++ library and is released under the | ||
5 | * terms of the license contained in the file LICENSE. | ||
6 | */ | ||
7 | |||
8 | #ifndef BU_CACHE_OBJECT_H | ||
9 | #define BU_CACHE_OBJECT_H | ||
10 | |||
11 | #ifndef NULL | ||
12 | #define NULL 0 | ||
13 | #endif | ||
14 | |||
15 | namespace Bu | ||
16 | { | ||
17 | template<typename keytype, typename obtype> class CacheBase; | ||
18 | template<typename keytype, typename obtype> class CacheEntry; | ||
19 | |||
20 | template<typename keytype, typename obtype> | ||
21 | class CacheObject | ||
22 | { | ||
23 | friend class CacheBase<keytype, obtype>; | ||
24 | public: | ||
25 | CacheObject() : | ||
26 | pCache( NULL ), | ||
27 | bChanged( false ) | ||
28 | { | ||
29 | } | ||
30 | |||
31 | virtual ~CacheObject() | ||
32 | { | ||
33 | } | ||
34 | |||
35 | typedef CacheBase<keytype, obtype> CacheType; | ||
36 | |||
37 | virtual keytype getKey() const=0; | ||
38 | virtual int getPersistenceScore() const { return 0; } | ||
39 | |||
40 | void lock() | ||
41 | { | ||
42 | pEntry->lock(); | ||
43 | } | ||
44 | |||
45 | void unlock() | ||
46 | { | ||
47 | pEntry->unlock(); | ||
48 | } | ||
49 | |||
50 | int getRefCount() const | ||
51 | { | ||
52 | return pEntry->getRefCount(); | ||
53 | } | ||
54 | |||
55 | bool hasChanged() const | ||
56 | { | ||
57 | return bChanged; | ||
58 | } | ||
59 | |||
60 | protected: | ||
61 | void changed( bool bChanged=true ) | ||
62 | { | ||
63 | if( this->bChanged == false && bChanged == true ) | ||
64 | pCache->objectChanged( getKey() ); | ||
65 | |||
66 | this->bChanged = bChanged; | ||
67 | } | ||
68 | |||
69 | private: | ||
70 | typedef CacheEntry<keytype, obtype> Entry; | ||
71 | void setCache( CacheType *pCache, Entry *pEntry ) | ||
72 | { | ||
73 | this->pCache = pCache; | ||
74 | this->pEntry = pEntry; | ||
75 | } | ||
76 | |||
77 | private: | ||
78 | CacheType *pCache; | ||
79 | Entry *pEntry; | ||
80 | bool bChanged; | ||
81 | }; | ||
82 | } | ||
83 | |||
84 | #endif | ||