2 * scantest.c - test the speed of the inode scan routine
15 #include <sys/ioctl.h>
19 #include <sys/resource.h>
21 #include "et/com_err.h"
22 #include "../version.h"
29 #include <sys/types.h>
32 #include "ext2fs/ext2_fs.h"
33 #include "ext2fs/ext2fs.h"
36 extern int isatty(int);
38 const char * device_name
= NULL
;
41 * This structure is used for keeping track of how much resources have
42 * been used for a particular pass of e2fsck.
44 struct resource_track
{
45 struct timeval time_start
;
46 struct timeval user_start
;
47 struct timeval system_start
;
51 struct resource_track global_rtrack
;
53 void init_resource_track(struct resource_track
*track
)
57 track
->brk_start
= sbrk(0);
58 gettimeofday(&track
->time_start
, 0);
59 getrusage(RUSAGE_SELF
, &r
);
60 track
->user_start
= r
.ru_utime
;
61 track
->system_start
= r
.ru_stime
;
64 static __inline__
float timeval_subtract(struct timeval
*tv1
,
67 return ((tv1
->tv_sec
- tv2
->tv_sec
) +
68 ((float) (tv1
->tv_usec
- tv2
->tv_usec
)) / 1000000);
71 static void print_resource_track(struct resource_track
*track
)
74 struct timeval time_end
;
76 gettimeofday(&time_end
, 0);
77 getrusage(RUSAGE_SELF
, &r
);
79 printf(_("Memory used: %d, elapsed time: %6.3f/%6.3f/%6.3f\n"),
80 (int) (((char *) sbrk(0)) - ((char *) track
->brk_start
)),
81 timeval_subtract(&time_end
, &track
->time_start
),
82 timeval_subtract(&r
.ru_utime
, &track
->user_start
),
83 timeval_subtract(&r
.ru_stime
, &track
->system_start
));
88 int main (int argc
, char *argv
[])
96 struct ext2_inode inode
;
98 printf(_("size of inode=%d\n"), sizeof(inode
));
100 device_name
= "/dev/hda3";
102 init_resource_track(&global_rtrack
);
104 retval
= ext2fs_open(device_name
, 0,
105 0, 0, unix_io_manager
, &fs
);
107 com_err(argv
[0], retval
, _("while trying to open %s"),
112 retval
= ext2fs_open_inode_scan(fs
, 0, &scan
);
114 com_err(argv
[0], retval
, _("while opening inode scan"));
117 retval
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
119 com_err(argv
[0], retval
, _("while starting inode scan"));
123 if (!inode
.i_links_count
)
125 printf("%lu\n", inode
.i_blocks
);
127 retval
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
129 com_err(argv
[0], retval
,
130 _("while doing inode scan"));
136 ext2fs_close_free(&fs
);
138 print_resource_track(&global_rtrack
);