2 * scantest.c - test the speed of the inode scan routine
17 #include <sys/ioctl.h>
21 #include <sys/resource.h>
23 #include "et/com_err.h"
24 #include "../version.h"
31 #include <sys/types.h>
34 #include "ext2fs/ext2_fs.h"
35 #include "ext2fs/ext2fs.h"
38 extern int isatty(int);
40 const char * device_name = NULL;
43 * This structure is used for keeping track of how much resources have
44 * been used for a particular pass of e2fsck.
46 struct resource_track {
47 struct timeval time_start;
48 struct timeval user_start;
49 struct timeval system_start;
53 struct resource_track global_rtrack;
55 void init_resource_track(struct resource_track *track)
59 track->brk_start = sbrk(0);
60 gettimeofday(&track->time_start, 0);
61 getrusage(RUSAGE_SELF, &r);
62 track->user_start = r.ru_utime;
63 track->system_start = r.ru_stime;
66 static __inline__ float timeval_subtract(struct timeval *tv1,
69 return ((tv1->tv_sec - tv2->tv_sec) +
70 ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
73 static void print_resource_track(struct resource_track *track)
76 struct timeval time_end;
78 gettimeofday(&time_end, 0);
79 getrusage(RUSAGE_SELF, &r);
81 printf(_("Memory used: %d, elapsed time: %6.3f/%6.3f/%6.3f\n"),
82 (int) (((char *) sbrk(0)) - ((char *) track->brk_start)),
83 timeval_subtract(&time_end, &track->time_start),
84 timeval_subtract(&r.ru_utime, &track->user_start),
85 timeval_subtract(&r.ru_stime, &track->system_start));
90 int main (int argc, char *argv[])
98 struct ext2_inode inode;
100 printf(_("size of inode=%d\n"), sizeof(inode));
102 device_name = "/dev/hda3";
104 init_resource_track(&global_rtrack);
106 retval = ext2fs_open(device_name, 0,
107 0, 0, unix_io_manager, &fs);
109 com_err(argv[0], retval, _("while trying to open %s"),
114 retval = ext2fs_open_inode_scan(fs, 0, &scan);
116 com_err(argv[0], retval, _("while opening inode scan"));
119 retval = ext2fs_get_next_inode(scan, &ino, &inode);
121 com_err(argv[0], retval, _("while starting inode scan"));
125 if (!inode.i_links_count)
127 printf("%lu\n", inode.i_blocks);
129 retval = ext2fs_get_next_inode(scan, &ino, &inode);
131 com_err(argv[0], retval,
132 _("while doing inode scan"));
140 print_resource_track(&global_rtrack);