ltt-usertrace/sample-thread.c

   1
   2 #include <pthread.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5 #include <stdlib.h>
   6
   7 #define LTT_TRACE
   8 #include <ltt/ltt-facility-user_generic.h>
   9
  10
  11 void *thr1(void *arg)
  12 {
  13   printf("thread 1, thread id : %lu, pid %lu\n", pthread_self(), getpid());
  14
  15   while(1) {
  16                 trace_user_generic_string("Hello world! Have a nice day.");
  17                 sleep(2);
  18         }
  19
  20   return ((void*)1);
  21
  22 }
  23
  24 void *thr2(void *arg)
  25 {
  26   printf("thread 2, thread id : %lu, pid %lu\n", pthread_self(), getpid());
  27         sleep(1);
  28   while(1) {
  29                 trace_user_generic_string("Hello world! Have a nice day.");
  30     sleep(2);
  31   }
  32   return ((void*)2);
  33 }
  34
  35
  36 int main()
  37 {
  38         int err;
  39         pthread_t tid1, tid2;
  40         void *tret;
  41
  42         printf("Will trace the following string : Hello world! Have a nice day.\n");
  43         printf("Press CTRL-C to stop.\n");
  44   printf("thread main, thread id : %lu, pid %lu\n", pthread_self(), getpid());
  45   err = pthread_create(&tid1, NULL, thr1, NULL);
  46   if(err!=0) exit(1);
  47
  48   err = pthread_create(&tid2, NULL, thr2, NULL);
  49   if(err!=0) exit(1);
  50
  51   err = pthread_join(tid1, &tret);
  52   if(err!= 0) exit(1);
  53
  54   err = pthread_join(tid2, &tret);
  55   if(err!= 0) exit(1);
  56
  57   return 0;
  58 }