gclib2/unit_tests/ipc.cxx

   1 /*
   2  * (c) Oleg Puchinin 2008
   3  * graycardinalster@gmail.com
   4  *
   5  */
   6
   7 #include <gclib2.h>
   8
   9 int m_sem;
  10
  11 int main (int argc, char ** argv)
  12 {
  13         m_sem = sem_init (NULL);
  14
  15         if (m_sem <= 0) {
  16                 perror ("sem_init");
  17                 return EXIT_FAILURE;
  18         }
  19
  20         if (fork () == 0) {
  21                 while (true) {
  22                         down (m_sem);
  23                         printf ("1\n"); fflush (stdout);
  24                         up (m_sem);
  25                 }
  26         } else {
  27                 while (true) {
  28                         down (m_sem);
  29                         printf ("2\n", fflush (stdout));
  30                         up (m_sem);
  31                 }
  32         }
  33
  34
  35         return EXIT_SUCCESS;
  36 }
  37