none/tests/pth_2sig.c

   1 #include <pthread.h>
   2 #include <signal.h>
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <string.h>
   6 #include <unistd.h>
   7 #include <sys/wait.h>
   8
   9 void *slavethread(void *arg)
  10 {
  11     while (1)
  12         pause();
  13 }
  14
  15 int main(int argc, char **argv)
  16 {
  17     const struct timespec alittle = { 0, 1000000000 / 100 };   // 0.01 seconds.
  18     int i;
  19     for (i = 0; i < 10; i++) {
  20         pthread_t slave;
  21         if (pthread_create(&slave, 0, slavethread, 0)) {
  22             perror("pthread_create");
  23             exit(2);
  24         }
  25     }
  26
  27     pid_t pid = getpid();
  28     switch (fork()) {
  29         case 0: // child
  30             sleep(2); // Should be enough to ensure (some) threads are created
  31             for (i = 0; i < 20 && kill(pid, SIGTERM) == 0; i++)
  32                 nanosleep(&alittle, NULL);
  33             exit(0);
  34         case -1:
  35             perror("fork");
  36             exit(4);
  37     }
  38
  39     while (1)
  40         pause();
  41     fprintf(stderr, "strange, this program is supposed to be killed!\n");
  42     return 1;
  43 }