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59b2d47f | 1 | |
2 | /* | |
86c0aed6 | 3 | * $Id: AIODiskFile.h,v 1.3 2007/05/18 06:41:27 amosjeffries Exp $ |
59b2d47f | 4 | * |
5 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
6 | * ---------------------------------------------------------- | |
7 | * | |
8 | * Squid is the result of efforts by numerous individuals from | |
9 | * the Internet community; see the CONTRIBUTORS file for full | |
10 | * details. Many organizations have provided support for Squid's | |
11 | * development; see the SPONSORS file for full details. Squid is | |
12 | * Copyrighted (C) 2001 by the Regents of the University of | |
13 | * California; see the COPYRIGHT file for full details. Squid | |
14 | * incorporates software developed and/or copyrighted by other | |
15 | * sources; see the CREDITS file for full details. | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2 of the License, or | |
20 | * (at your option) any later version. | |
21 | * | |
22 | * This program is distributed in the hope that it will be useful, | |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License | |
28 | * along with this program; if not, write to the Free Software | |
29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
30 | * | |
31 | * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org> | |
32 | */ | |
33 | ||
b9ae18aa | 34 | #ifndef SQUID_AIODISKFILE_H |
35 | #define SQUID_AIODISKFILE_H | |
59b2d47f | 36 | |
b9ae18aa | 37 | #include "DiskIO/DiskFile.h" |
38 | #include "async_io.h" | |
aa839030 | 39 | #include "cbdata.h" |
59b2d47f | 40 | |
b9ae18aa | 41 | class AIODiskIOStrategy; |
59b2d47f | 42 | |
b9ae18aa | 43 | class AIODiskFile : public DiskFile |
59b2d47f | 44 | { |
45 | ||
46 | public: | |
59b2d47f | 47 | |
b9ae18aa | 48 | friend class AIODiskIOStrategy; |
49 | void * operator new (size_t); | |
50 | void operator delete (void *); | |
51 | AIODiskFile (char const *path, AIODiskIOStrategy *); | |
52 | ~AIODiskFile(); | |
53 | virtual void open (int, mode_t, RefCount<IORequestor>); | |
54 | virtual void create (int, mode_t, RefCount<IORequestor>); | |
55 | virtual void read(ReadRequest *); | |
56 | virtual void write(WriteRequest *); | |
57 | virtual void close (); | |
58 | virtual bool canRead() const; | |
59 | virtual bool canWrite() const; | |
60 | ||
61 | /* During migration only */ | |
62 | virtual int getFD() const; | |
63 | ||
64 | virtual bool error() const; | |
59b2d47f | 65 | |
b9ae18aa | 66 | /* Inform callers if there is IO in progress */ |
67 | virtual bool ioInProgress() const; | |
68 | ||
69 | private: | |
70 | CBDATA_CLASS(AIODiskFile); | |
71 | void error(bool const &); | |
72 | int fd; | |
86c0aed6 | 73 | string path; |
b9ae18aa | 74 | AIODiskIOStrategy *strategy; |
75 | RefCount<IORequestor> ioRequestor; | |
76 | bool closed; | |
77 | bool error_; | |
78 | }; | |
59b2d47f | 79 | |
b9ae18aa | 80 | #endif /* SQUID_AIODISKFILE_H */ |