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