git.itanic.dy.fi Git - scan-pagemap/blob - main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <errno.h>
   5 #include <getopt.h>
   6
   7 #include "parse.h"
   8 #include "analyze.h"
   9
  10 void print_help_and_die(char *name)
  11 {
  12         printf("Usage: %s options \n"
  13                 "-p, --pid=PID          scan maps belingin to a given pid\n"
  14                 "-m, --map=mapname      scan maps with given mapping name\n"
  15                 "-h, --help             show this help\n",
  16                 name);
  17
  18         exit(0);
  19 }
  20
  21 #define OPT_WITH_THREADS        0x101
  22
  23 void read_args(int argc, char *argv[], struct parse_opts *opts)
  24 {
  25         int optind = 0, c;
  26         static struct option long_options[] = {
  27                 { .val = 'p', .name = "pid", .has_arg = 1, },
  28                 { .val = 'P', .name = "process", .has_arg = 1, },
  29                 { .val = 'm', .name = "map", .has_arg = 1, },
  30                 { .val = OPT_WITH_THREADS, .name = "with-threads" },
  31                 { .val = 'h', .name = "help", },
  32         };
  33         char short_options[] = "p:P:m:h";
  34         opts->parse_mask = 0;
  35
  36         while (1) {
  37                 c = getopt_long(argc, argv, short_options, long_options,
  38                                 &optind);
  39
  40                 if (c == -1)
  41                         break;
  42
  43                 printf("%c: %s\n", c, optarg);
  44                 switch (c) {
  45                 case 'p':
  46                         opts->pid = atoi(optarg);
  47                         opts->parse_mask |= PARSE_PID;
  48                         break;
  49                 case 'P':
  50                         opts->parse_mask |= PARSE_PROCESS_NAME;
  51                         opts->name = optarg;
  52                         break;
  53                 case 'm':
  54                         opts->parse_mask |= PARSE_MAP_NAME;
  55                         opts->name = optarg;
  56                         break;
  57                 case OPT_WITH_THREADS:
  58                         opts->with_threads = 1;
  59                         break;
  60                 case 'h':
  61                         print_help_and_die(argv[0]);
  62                 }
  63         }
  64 }
  65
  66 int main(int argc, char *argv[])
  67 {
  68         struct pageframe pf;
  69         struct process *process_list = NULL;
  70         struct parse_opts opts;
  71
  72         memset(&opts, 0, sizeof(opts));
  73
  74         read_args(argc, argv, &opts);
  75
  76         if (argc < 3) {
  77                 printf("A pid needs to be given as an argument\n");
  78                 print_help_and_die(argv[0]);
  79         }
  80
  81         memset(&pf, 0, sizeof(pf));
  82
  83         scan_all_pids(&pf, &process_list, &opts);
  84         print_pid_stats(&pf, process_list, &opts);
  85         print_page_stats(&pf);
  86
  87         return 0;
  88 }