1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2002
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: os_fsync.c,v 11.14 2002/07/12 18:56:50 bostic Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <fcntl.h> /* XXX: Required by __hp3000s900 */
#include <unistd.h>
#include <string.h>
#endif
#include "db_int.h"
#ifdef HAVE_VXWORKS
#include "ioLib.h"
#define fsync(fd) __vx_fsync(fd);
int
__vx_fsync(fd)
int fd;
{
int ret;
/*
* The results of ioctl are driver dependent. Some will return the
* number of bytes sync'ed. Only if it returns 'ERROR' should we
* flag it.
*/
if ((ret = ioctl(fd, FIOSYNC, 0)) != ERROR)
return (0);
return (ret);
}
#endif
#ifdef __hp3000s900
#define fsync(fd) __mpe_fsync(fd);
int
__mpe_fsync(fd)
int fd;
{
extern FCONTROL(short, short, void *);
FCONTROL(_MPE_FILENO(fd), 2, NULL); /* Flush the buffers */
FCONTROL(_MPE_FILENO(fd), 6, NULL); /* Write the EOF */
return (0);
}
#endif
/*
* __os_fsync --
* Flush a file descriptor.
*
* PUBLIC: int __os_fsync __P((DB_ENV *, DB_FH *));
*/
int
__os_fsync(dbenv, fhp)
DB_ENV *dbenv;
DB_FH *fhp;
{
int ret;
/*
* Do nothing if the file descriptor has been marked as not requiring
* any sync to disk.
*/
if (F_ISSET(fhp, DB_FH_NOSYNC))
return (0);
do {
ret = DB_GLOBAL(j_fsync) != NULL ?
DB_GLOBAL(j_fsync)(fhp->fd) : fsync(fhp->fd);
} while (ret != 0 && (ret = __os_get_errno()) == EINTR);
if (ret != 0)
__db_err(dbenv, "fsync %s", strerror(ret));
return (ret);
}
|
