1 |
root |
1.1 |
/* mmc.h - header file for mmap cache package |
2 |
|
|
** |
3 |
|
|
** Copyright © 1998 by Jef Poskanzer <jef@acme.com>. |
4 |
|
|
** All rights reserved. |
5 |
|
|
** |
6 |
|
|
** Redistribution and use in source and binary forms, with or without |
7 |
|
|
** modification, are permitted provided that the following conditions |
8 |
|
|
** are met: |
9 |
|
|
** 1. Redistributions of source code must retain the above copyright |
10 |
|
|
** notice, this list of conditions and the following disclaimer. |
11 |
|
|
** 2. Redistributions in binary form must reproduce the above copyright |
12 |
|
|
** notice, this list of conditions and the following disclaimer in the |
13 |
|
|
** documentation and/or other materials provided with the distribution. |
14 |
|
|
** |
15 |
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
16 |
|
|
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 |
|
|
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
18 |
|
|
** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
19 |
|
|
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
20 |
|
|
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
21 |
|
|
** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
22 |
|
|
** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
23 |
|
|
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
24 |
|
|
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
25 |
|
|
** SUCH DAMAGE. |
26 |
|
|
*/ |
27 |
|
|
|
28 |
|
|
#ifndef _MMC_H_ |
29 |
|
|
#define _MMC_H_ |
30 |
|
|
|
31 |
|
|
/* Returns an mmap()ed area for the given file, or (void*) 0 on errors. |
32 |
|
|
** If you have a stat buffer on the file, pass it in, otherwise pass 0. |
33 |
|
|
** Same for the current time. |
34 |
|
|
*/ |
35 |
|
|
extern void* mmc_map( char* filename, struct stat* sbP, struct timeval* nowP ); |
36 |
|
|
|
37 |
|
|
/* Done with an mmap()ed area that was returned by mmc_map(). |
38 |
|
|
** If you have a stat buffer on the file, pass it in, otherwise pass 0. |
39 |
|
|
** Same for the current time. |
40 |
|
|
*/ |
41 |
|
|
extern void mmc_unmap( void* addr, struct stat* sbP, struct timeval* nowP ); |
42 |
|
|
|
43 |
|
|
/* Clean up the mmc package, freeing any unused storage. |
44 |
|
|
** This should be called periodically, say every five minutes. |
45 |
|
|
** If you have the current time, pass it in, otherwise pass 0. |
46 |
|
|
*/ |
47 |
|
|
extern void mmc_cleanup( struct timeval* nowP ); |
48 |
|
|
|
49 |
|
|
/* Free all storage, usually in preparation for exitting. */ |
50 |
|
|
extern void mmc_destroy( void ); |
51 |
|
|
|
52 |
|
|
/* Generate debugging statistics syslog message. */ |
53 |
|
|
extern void mmc_logstats( long secs ); |
54 |
|
|
|
55 |
|
|
#endif /* _MMC_H_ */ |