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1 | /* |
2 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
3 | * ---------------------------------------------------------- | |
4 | * | |
5 | * Squid is the result of efforts by numerous individuals from | |
6 | * the Internet community; see the CONTRIBUTORS file for full | |
7 | * details. Many organizations have provided support for Squid's | |
8 | * development; see the SPONSORS file for full details. Squid is | |
9 | * Copyrighted (C) 2001 by the Regents of the University of | |
10 | * California; see the COPYRIGHT file for full details. Squid | |
11 | * incorporates software developed and/or copyrighted by other | |
12 | * sources; see the CREDITS file for full details. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
27 | * | |
28 | */ | |
29 | ||
30 | #ifndef SQUID_FS_UFS_UFSSTRATEGY_H | |
31 | #define SQUID_FS_UFS_UFSSTRATEGY_H | |
32 | ||
33 | #include "DiskIO/DiskFile.h" | |
34 | #include "StoreIOState.h" | |
35 | ||
36 | class Swapdir; | |
37 | class StoreEntry; | |
38 | class DiskIOStrategy; | |
39 | ||
40 | namespace Fs | |
41 | { | |
42 | namespace Ufs | |
43 | { | |
44 | /// \ingroup UFS | |
45 | class UFSStrategy | |
46 | { | |
47 | public: | |
48 | UFSStrategy (DiskIOStrategy *); | |
49 | virtual ~UFSStrategy (); | |
50 | virtual bool shedLoad(); | |
51 | ||
52 | virtual int load(); | |
53 | ||
54 | StoreIOState::Pointer createState(SwapDir *SD, StoreEntry *e, StoreIOState::STIOCB * callback, void *callback_data) const; | |
55 | /* UFS specific */ | |
56 | virtual RefCount<DiskFile> newFile (char const *path); | |
57 | StoreIOState::Pointer open(SwapDir *, StoreEntry *, StoreIOState::STFNCB *, | |
58 | StoreIOState::STIOCB *, void *); | |
59 | StoreIOState::Pointer create(SwapDir *, StoreEntry *, StoreIOState::STFNCB *, | |
60 | StoreIOState::STIOCB *, void *); | |
61 | ||
62 | virtual void unlinkFile (char const *); | |
63 | virtual void sync(); | |
64 | ||
65 | virtual int callback(); | |
66 | ||
67 | /** Init per-instance logic */ | |
68 | virtual void init(); | |
69 | ||
70 | /** cachemgr output on the IO instance stats */ | |
71 | virtual void statfs(StoreEntry & sentry)const; | |
72 | ||
73 | /** The io strategy in use */ | |
74 | DiskIOStrategy *io; | |
75 | ||
76 | protected: | |
77 | ||
78 | friend class UFSSwapDir; | |
79 | ||
80 | private: | |
81 | UFSStrategy(); //disabled | |
82 | UFSStrategy(UFSStrategy const &); //disabled | |
83 | UFSStrategy &operator=(UFSStrategy const &); //disabled | |
84 | ||
85 | }; | |
86 | ||
87 | } //namespace Ufs | |
88 | } //namespace Fs | |
89 | ||
90 | #endif /* SQUID_FS_UFS_UFSSTRATEGY_H */ |