e2fsck/scantest.c

   1 /*
   2  * scantest.c - test the speed of the inode scan routine
   3  */
   4
   5 #include "config.h"
   6 #include <string.h>
   7 #include <fcntl.h>
   8 #include <ctype.h>
   9 #include <termios.h>
  10 #include <time.h>
  11 #ifdef HAVE_GETOPT_H
  12 #include <getopt.h>
  13 #endif
  14 #include <unistd.h>
  15 #include <sys/ioctl.h>
  16 #ifdef HAVE_MALLOC_H
  17 #include <malloc.h>
  18 #endif
  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 "ext2fs/ext2_fs.h"
  33 #include "ext2fs/ext2fs.h"
  34
  35
  36 extern int isatty(int);
  37
  38 const char * device_name = NULL;
  39
  40 /*
  41  * This structure is used for keeping track of how much resources have
  42  * been used for a particular pass of e2fsck.
  43  */
  44 struct resource_track {
  45         struct timeval time_start;
  46         struct timeval user_start;
  47         struct timeval system_start;
  48         void    *brk_start;
  49 };
  50
  51 struct resource_track   global_rtrack;
  52
  53 void init_resource_track(struct resource_track *track)
  54 {
  55         struct rusage r;
  56
  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;
  62 }
  63
  64 static __inline__ float timeval_subtract(struct timeval *tv1,
  65                                          struct timeval *tv2)
  66 {
  67         return ((tv1->tv_sec - tv2->tv_sec) +
  68                 ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
  69 }
  70
  71 static void print_resource_track(struct resource_track *track)
  72 {
  73         struct rusage r;
  74         struct timeval time_end;
  75
  76         gettimeofday(&time_end, 0);
  77         getrusage(RUSAGE_SELF, &r);
  78
  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));
  84 }
  85
  86
  87
  88 int main (int argc, char *argv[])
  89 {
  90         errcode_t       retval = 0;
  91         int             exit_value = 0;
  92         int             i;
  93         ext2_filsys     fs;
  94         ext2_inode_scan scan;
  95         ext2_ino_t      ino;
  96         struct ext2_inode inode;
  97
  98         printf(_("size of inode=%d\n"), sizeof(inode));
  99
 100         device_name = "/dev/hda3";
 101
 102         init_resource_track(&global_rtrack);
 103
 104         retval = ext2fs_open(device_name, 0,
 105                              0, 0, unix_io_manager, &fs);
 106         if (retval) {
 107                 com_err(argv[0], retval, _("while trying to open %s"),
 108                         device_name);
 109                 exit(1);
 110         }
 111
 112         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 113         if (retval) {
 114                 com_err(argv[0], retval, _("while opening inode scan"));
 115                 exit(1);
 116         }
 117         retval = ext2fs_get_next_inode(scan, &ino, &inode);
 118         if (retval) {
 119                 com_err(argv[0], retval, _("while starting inode scan"));
 120                 exit(1);
 121         }
 122         while (ino) {
 123                 if (!inode.i_links_count)
 124                         goto next;
 125                 printf("%lu\n", inode.i_blocks);
 126         next:
 127                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
 128                 if (retval) {
 129                         com_err(argv[0], retval,
 130                                 _("while doing inode scan"));
 131                         exit(1);
 132                 }
 133         }
 134
 135
 136         ext2fs_close_free(&fs);
 137
 138         print_resource_track(&global_rtrack);
 139
 140         return exit_value;
 141 }