e2fsck/scantest.c

   1 /*
   2  * scantest.c - test the speed of the inode scan routine
   3  */
   4
   5 #include <string.h>
   6 #include <fcntl.h>
   7 #include <ctype.h>
   8 #include <termios.h>
   9 #include <time.h>
  10 #ifdef HAVE_GETOPT_H
  11 #include <getopt.h>
  12 #endif
  13 #include <unistd.h>
  14 #ifdef HAVE_MNTENT_H
  15 #include <mntent.h>
  16 #endif
  17 #include <sys/ioctl.h>
  18 #include <malloc.h>
  19 #include <sys/resource.h>
  20
  21 #include "et/com_err.h"
  22 #include "../version.h"
  23
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27 #include <stdlib.h>
  28 #include <sys/stat.h>
  29 #include <sys/types.h>
  30 #include <sys/time.h>
  31
  32 #include <linux/ext2_fs.h>
  33
  34 #include "ext2fs/ext2fs.h"
  35
  36
  37 extern int isatty(int);
  38
  39 const char * device_name = NULL;
  40
  41 /*
  42  * This structure is used for keeping track of how much resources have
  43  * been used for a particular pass of e2fsck.
  44  */
  45 struct resource_track {
  46         struct timeval time_start;
  47         struct timeval user_start;
  48         struct timeval system_start;
  49         void    *brk_start;
  50 };
  51
  52 struct resource_track   global_rtrack;
  53
  54 void init_resource_track(struct resource_track *track)
  55 {
  56         struct rusage r;
  57
  58         track->brk_start = sbrk(0);
  59         gettimeofday(&track->time_start, 0);
  60         getrusage(RUSAGE_SELF, &r);
  61         track->user_start = r.ru_utime;
  62         track->system_start = r.ru_stime;
  63 }
  64
  65 static __inline__ float timeval_subtract(struct timeval *tv1,
  66                                          struct timeval *tv2)
  67 {
  68         return ((tv1->tv_sec - tv2->tv_sec) +
  69                 ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
  70 }
  71
  72 static void print_resource_track(struct resource_track *track)
  73 {
  74         struct rusage r;
  75         struct timeval time_end;
  76
  77         gettimeofday(&time_end, 0);
  78         getrusage(RUSAGE_SELF, &r);
  79
  80         printf(_("Memory used: %d, elapsed time: %6.3f/%6.3f/%6.3f\n"),
  81                (int) (((char *) sbrk(0)) - ((char *) track->brk_start)),
  82                timeval_subtract(&time_end, &track->time_start),
  83                timeval_subtract(&r.ru_utime, &track->user_start),
  84                timeval_subtract(&r.ru_stime, &track->system_start));
  85 }
  86
  87
  88
  89 int main (int argc, char *argv[])
  90 {
  91         errcode_t       retval = 0;
  92         int             exit_value = 0;
  93         int             i;
  94         ext2_filsys     fs;
  95         ext2_inode_scan scan;
  96         ext2_ino_t      ino;
  97         struct ext2_inode inode;
  98
  99         printf(_("size of inode=%d\n"), sizeof(inode));
 100
 101         device_name = "/dev/hda3";
 102
 103         init_resource_track(&global_rtrack);
 104
 105         retval = ext2fs_open(device_name, 0,
 106                              0, 0, unix_io_manager, &fs);
 107         if (retval) {
 108                 com_err(argv[0], retval, _("while trying to open %s"),
 109                         device_name);
 110                 exit(1);
 111         }
 112
 113         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 114         if (retval) {
 115                 com_err(argv[0], retval, _("while opening inode scan"));
 116                 exit(1);
 117         }
 118         retval = ext2fs_get_next_inode(scan, &ino, &inode);
 119         if (retval) {
 120                 com_err(argv[0], retval, _("while starting inode scan"));
 121                 exit(1);
 122         }
 123         while (ino) {
 124                 if (!inode.i_links_count)
 125                         goto next;
 126                 printf("%lu\n", inode.i_blocks);
 127         next:
 128                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
 129                 if (retval) {
 130                         com_err(argv[0], retval,
 131                                 _("while doing inode scan"));
 132                         exit(1);
 133                 }
 134         }
 135
 136
 137         ext2fs_close(fs);
 138
 139         print_resource_track(&global_rtrack);
 140
 141         return exit_value;
 142 }