|
1 | | -// |
2 | | -// AccessExpireCache.h |
3 | | -// |
4 | | -// $Id: //poco/svn/Foundation/include/Poco/AccessExpireCache.h#2 $ |
5 | | -// |
6 | | -// Library: Foundation |
7 | | -// Package: Cache |
8 | | -// Module: AccessExpireCache |
9 | | -// |
10 | | -// Definition of the AccessExpireCache class. |
11 | | -// |
12 | | -// Copyright (c) 2006, Applied Informatics Software Engineering GmbH. |
13 | | -// and Contributors. |
14 | | -// |
15 | | -// Permission is hereby granted, free of charge, to any person or organization |
16 | | -// obtaining a copy of the software and accompanying documentation covered by |
17 | | -// this license (the "Software") to use, reproduce, display, distribute, |
18 | | -// execute, and transmit the Software, and to prepare derivative works of the |
19 | | -// Software, and to permit third-parties to whom the Software is furnished to |
20 | | -// do so, all subject to the following: |
21 | | -// |
22 | | -// The copyright notices in the Software and this entire statement, including |
23 | | -// the above license grant, this restriction and the following disclaimer, |
24 | | -// must be included in all copies of the Software, in whole or in part, and |
25 | | -// all derivative works of the Software, unless such copies or derivative |
26 | | -// works are solely in the form of machine-executable object code generated by |
27 | | -// a source language processor. |
28 | | -// |
29 | | -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
30 | | -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
31 | | -// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
32 | | -// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
33 | | -// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
34 | | -// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
35 | | -// DEALINGS IN THE SOFTWARE. |
36 | | -// |
37 | | - |
38 | | - |
39 | | -#ifndef Foundation_AccessExpireCache_INCLUDED |
40 | | -#define Foundation_AccessExpireCache_INCLUDED |
41 | | - |
42 | | - |
43 | | -#include "Poco/AbstractCache.h" |
44 | | -#include "Poco/AccessExpireStrategy.h" |
45 | | - |
46 | | - |
47 | | -namespace Poco { |
48 | | - |
49 | | - |
50 | | -template <class TKey, class TValue> |
51 | | -class AccessExpireCache: public AbstractCache<TKey, TValue, AccessExpireStrategy<TKey, TValue> > |
52 | | - /// An AccessExpireCache caches entries for a fixed time period (per default 10 minutes). |
53 | | - /// Entries expire when they are not accessed with get() during this time period. Each access resets |
54 | | - /// the start time for expiration. |
55 | | - /// Be careful when using an AccessExpireCache. A cache is often used |
56 | | - /// like cache.has(x) followed by cache.get x). Note that it could happen |
57 | | - /// that the "has" call works, then the current execution thread gets descheduled, time passes, |
58 | | - /// the entry gets invalid, thus leading to an empty SharedPtr being returned |
59 | | - /// when "get" is invoked. |
60 | | -{ |
61 | | -public: |
62 | | - AccessExpireCache(Timestamp::TimeDiff expire = 600000): |
63 | | - AbstractCache<TKey, TValue, AccessExpireStrategy<TKey, TValue> >(AccessExpireStrategy<TKey, TValue>(expire)) |
64 | | - { |
65 | | - } |
66 | | - |
67 | | - ~AccessExpireCache() |
68 | | - { |
69 | | - } |
70 | | - |
71 | | -private: |
72 | | - AccessExpireCache(const AccessExpireCache& aCache); |
73 | | - AccessExpireCache& operator = (const AccessExpireCache& aCache); |
74 | | -}; |
75 | | - |
76 | | - |
77 | | -} // namespace Poco |
78 | | - |
79 | | - |
80 | | -#endif |
| 1 | +// |
| 2 | +// AccessExpireCache.h |
| 3 | +// |
| 4 | +// $Id: //poco/svn/Foundation/include/Poco/AccessExpireCache.h#2 $ |
| 5 | +// |
| 6 | +// Library: Foundation |
| 7 | +// Package: Cache |
| 8 | +// Module: AccessExpireCache |
| 9 | +// |
| 10 | +// Definition of the AccessExpireCache class. |
| 11 | +// |
| 12 | +// Copyright (c) 2006, Applied Informatics Software Engineering GmbH. |
| 13 | +// and Contributors. |
| 14 | +// |
| 15 | +// Permission is hereby granted, free of charge, to any person or organization |
| 16 | +// obtaining a copy of the software and accompanying documentation covered by |
| 17 | +// this license (the "Software") to use, reproduce, display, distribute, |
| 18 | +// execute, and transmit the Software, and to prepare derivative works of the |
| 19 | +// Software, and to permit third-parties to whom the Software is furnished to |
| 20 | +// do so, all subject to the following: |
| 21 | +// |
| 22 | +// The copyright notices in the Software and this entire statement, including |
| 23 | +// the above license grant, this restriction and the following disclaimer, |
| 24 | +// must be included in all copies of the Software, in whole or in part, and |
| 25 | +// all derivative works of the Software, unless such copies or derivative |
| 26 | +// works are solely in the form of machine-executable object code generated by |
| 27 | +// a source language processor. |
| 28 | +// |
| 29 | +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 30 | +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 31 | +// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
| 32 | +// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
| 33 | +// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
| 34 | +// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 35 | +// DEALINGS IN THE SOFTWARE. |
| 36 | +// |
| 37 | + |
| 38 | + |
| 39 | +#ifndef Foundation_AccessExpireCache_INCLUDED |
| 40 | +#define Foundation_AccessExpireCache_INCLUDED |
| 41 | + |
| 42 | + |
| 43 | +#include "Poco/AbstractCache.h" |
| 44 | +#include "Poco/AccessExpireStrategy.h" |
| 45 | + |
| 46 | + |
| 47 | +namespace Poco { |
| 48 | + |
| 49 | + |
| 50 | +template <class TKey, class TValue> |
| 51 | +class AccessExpireCache: public AbstractCache<TKey, TValue, AccessExpireStrategy<TKey, TValue> > |
| 52 | + /// An AccessExpireCache caches entries for a fixed time period (per default 10 minutes). |
| 53 | + /// Entries expire when they are not accessed with get() during this time period. Each access resets |
| 54 | + /// the start time for expiration. |
| 55 | + /// Be careful when using an AccessExpireCache. A cache is often used |
| 56 | + /// like cache.has(x) followed by cache.get x). Note that it could happen |
| 57 | + /// that the "has" call works, then the current execution thread gets descheduled, time passes, |
| 58 | + /// the entry gets invalid, thus leading to an empty SharedPtr being returned |
| 59 | + /// when "get" is invoked. |
| 60 | +{ |
| 61 | +public: |
| 62 | + AccessExpireCache(Timestamp::TimeDiff expire = 600000): |
| 63 | + AbstractCache<TKey, TValue, AccessExpireStrategy<TKey, TValue> >(AccessExpireStrategy<TKey, TValue>(expire)) |
| 64 | + { |
| 65 | + } |
| 66 | + |
| 67 | + ~AccessExpireCache() |
| 68 | + { |
| 69 | + } |
| 70 | + |
| 71 | +private: |
| 72 | + AccessExpireCache(const AccessExpireCache& aCache); |
| 73 | + AccessExpireCache& operator = (const AccessExpireCache& aCache); |
| 74 | +}; |
| 75 | + |
| 76 | + |
| 77 | +} // namespace Poco |
| 78 | + |
| 79 | + |
| 80 | +#endif |
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