src/bin/listsem.c

   1 /*
   2  *      listsem.c
   3  *
   4  *      Lists all semaphores in all Teams.
   5  *      by O.Siebenmarck.
   6  *
   7  *      04-27-2002 - mmu_man
   8  *       added command line args
   9  *
  10  *      Legal stuff follows:
  11
  12         Copyright (c) 2002 Oliver Siebenmarck <olli@ithome.de>, OpenBeOS project
  13
  14         Permission is hereby granted, free of charge, to any person obtaining a copy of
  15         this software and associated documentation files (the "Software"), to deal in
  16         the Software without restriction, including without limitation the rights to
  17         use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  18         of the Software, and to permit persons to whom the Software is furnished to do
  19         so, subject to the following conditions:
  20
  21         The above copyright notice and this permission notice shall be included in all
  22         copies or substantial portions of the Software.
  23
  24         THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  25         IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26         FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  27         AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  28         LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  29         OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  30         THE SOFTWARE.
  31
  32 */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <OS.h>
  38
  39
  40 static void print_sem_info(sem_info *info)
  41 {
  42         printf("%7" B_PRId32 "%31s%7" B_PRId32 "\n", info->sem, info->name,
  43                 info->count);
  44 }
  45
  46
  47 static void print_header(team_info *tinfo)
  48 {
  49         if (tinfo != NULL)
  50                 printf("TEAM  %" B_PRId32 " (%s):\n", tinfo->team, tinfo->args);
  51
  52         printf("     ID                           name  count\n");
  53         printf("---------------------------------------------\n");
  54 }
  55
  56
  57 static void list_sems(team_info *tinfo)
  58 {
  59         sem_info info;
  60         int32 cookie = 0;
  61
  62         print_header(tinfo);
  63
  64         while (get_next_sem_info(tinfo->team, &cookie, &info) == B_OK)
  65                 print_sem_info(&info);
  66
  67         printf("\n");
  68 }
  69
  70 int main(int argc, char **argv)
  71 {
  72         team_info tinfo;
  73         int32 cookie = 0;
  74         int32 i;
  75         system_info sysinfo;
  76
  77         // show up some stats first...
  78         get_system_info(&sysinfo);
  79         printf("sem: total: %5" B_PRIu32 ", used: %5" B_PRIu32 ", left: %5" B_PRIu32
  80                 "\n\n", sysinfo.max_sems, sysinfo.used_sems,
  81                 sysinfo.max_sems - sysinfo.used_sems);
  82
  83         if (argc == 1) {
  84                 while (get_next_team_info( &cookie, &tinfo) == B_OK)
  85                         list_sems(&tinfo);
  86
  87                 return 0;
  88         }
  89
  90         for (i = 1; i < argc; i++) {
  91                 if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) {
  92                         fprintf(stderr, "Usage:  %s [-s semid]  [teamid]\n", argv[0]);
  93                         fputs("        List the semaphores allocated by the specified\n",
  94                                 stderr);
  95                         fputs("        team, or all teams if none is specified.\n",
  96                                 stderr);
  97                         fputs("\n", stderr);
  98                         fputs("        The -s option displays the sem_info data for a\n",
  99                                 stderr);
 100                         fputs("        specified semaphore.\n", stderr);
 101                         return 0;
 102                 } else if (strcmp(argv[i], "-s") == 0) {
 103                         if (argc < i + 2)
 104                                 printf("-s used without associated sem id\n");
 105                         else {
 106                                 sem_id id = atoi(argv[i + 1]);
 107                                 sem_info info;
 108                                 if (get_sem_info(id, &info) == B_OK) {
 109                                         print_header(NULL);
 110                                         print_sem_info(&info);
 111                                 } else
 112                                         printf("semaphore %" B_PRId32 " unknown\n\n", id);
 113
 114                                 i++;
 115                         }
 116                 } else {
 117                         team_id team;
 118                         team = atoi(argv[i]);
 119                         if (get_team_info(team, &tinfo) == B_OK)
 120                                 list_sems(&tinfo);
 121                         else
 122                                 printf("team %" B_PRId32 " unknown\n\n", team);
 123                 }
 124         }
 125
 126         return 0;
 127 }
 128