src/bin/waitfor.cpp

   1 /* waitfor.c - waits for a given threadname
   2  * (c) 2002, François Revol (mmu_man) for OpenBeOS
   3  * released under the MIT licence.
   4  *
   5  * ChangeLog:
   6  * 04-26-2002 v1.0
   7  *  Initial.
   8  *
   9  * waitfor threadname
  10  * thesnooze() time is the same as the original, found using bdb waitfor foobar,
  11  * and stepping until the snooze() call returns, the value is at the push
  12  * instruction just before the call.
  13  */
  14
  15 #include <stdio.h>
  16 #include <string.h>
  17
  18 #include <Messenger.h>
  19
  20
  21 #define SNOOZE_TIME 100000
  22
  23
  24 int
  25 main(int argc, char** argv)
  26 {
  27         if (argc == 2) {
  28                 while (find_thread(argv[1]) < 0) {
  29                         if (snooze(SNOOZE_TIME) != B_OK)
  30                                 return 1;
  31                 }
  32         } else if (argc == 3 && strcmp(argv[1], "-e") == 0) {
  33                 while (find_thread(argv[2]) >= 0) {
  34                         if (snooze(SNOOZE_TIME) != B_OK)
  35                                 return 1;
  36                 }
  37         } else if (argc == 3 && strcmp(argv[1], "-m") == 0) {
  38                 while (true) {
  39                         BMessenger messenger(argv[2]);
  40                         if (messenger.IsValid())
  41                                 break;
  42                         if (snooze(SNOOZE_TIME) != B_OK)
  43                                 return 1;
  44                 }
  45         } else {
  46                 fprintf(stderr,
  47                         "Usage:\n"
  48                         "  %s <thread_name>\n"
  49                         "      wait until a thread with 'thread_name' has been started.\n\n"
  50                         "  %s -e <thread_name>\n"
  51                         "      wait until all threads with thread_name have ended.\n\n"
  52                         "  %s -m <app_signature>\n"
  53                         "      wait until the application specified by 'app_signature' is "
  54                         "is ready to receive messages.\n", argv[0], argv[0], argv[0]);
  55                 return 1;
  56         }
  57
  58         return 0;
  59 }
  60