none/tests/pth_blockedsig.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #include <unistd.h>
   4 #include <errno.h>
   5 #include <stdio.h>
   6 #include <signal.h>
   7 #include <pthread.h>
   8
   9 static void sig_usr1(int);
  10
  11 static pthread_t main_thread;
  12
  13 void *
  14 child_main(void *no_args)
  15 {
  16 //  int i;
  17
  18 // Only do it once, to shorten test --njn
  19 //  for (i = 0; i < 5; ++i)
  20 //    {
  21       sleep (1);
  22       fprintf (stdout, "thread CHILD sending SIGUSR1 to thread MAIN\n");
  23       if (pthread_kill (main_thread, SIGUSR1) != 0)
  24         fprintf (stderr, "error doing pthread_kill\n");
  25 //    }
  26
  27   return no_args;
  28 }
  29
  30 int
  31 main(void)
  32 {
  33   struct sigaction sigact;
  34   sigset_t newmask, oldmask;
  35   pthread_t child;
  36
  37   memset(&newmask, 0, sizeof newmask);
  38   sigemptyset (&newmask);
  39   sigaddset (&newmask, SIGUSR1);
  40
  41   if (pthread_sigmask (SIG_BLOCK, &newmask, &oldmask) != 0)
  42     fprintf (stderr, "SIG_BLOCK error");
  43
  44   memset (&sigact, 0, sizeof sigact);
  45   sigact.sa_handler = sig_usr1;
  46   if (sigaction(SIGUSR1, &sigact, NULL) != 0)
  47     fprintf (stderr, "signal(SIGINT) error");
  48
  49   main_thread = pthread_self ();
  50   if (pthread_create (&child, NULL, child_main, NULL) != 0)
  51     fprintf (stderr, "error creating thread");
  52
  53   pthread_join (child, NULL);
  54
  55   exit(0);
  56 }
  57
  58 static void
  59 sig_usr1 (int signo)
  60 {
  61   fprintf (stderr, "SHOULD NOT BE HERE (SIGUSR1)!!!!\n");
  62   return;
  63 }
  64
  65