regress/lib/libc/siginfo/sigalrm/sigalrm.c

   1 /* $NetBSD: sigalrm.c,v 1.4 2006/05/10 19:07:22 mrg Exp $ */
   2
   3 #include <sys/time.h>
   4 #include <sys/ucontext.h>
   5
   6 #include <assert.h>
   7 #include <signal.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10
  11 void
  12 sigalrm(int signo, siginfo_t *info, void *ptr)
  13 {
  14 #ifdef DEBUG
  15         printf("%d %p %p\n", signo, info, ptr);
  16         if (info != NULL) {
  17                 printf("si_signo=%d\n", info->si_signo);
  18                 printf("si_errno=%d\n", info->si_errno);
  19                 printf("si_code=%d\n", info->si_code);
  20                 printf("si_value.sival_int=%d\n", info->si_value.sival_int);
  21         }
  22         if (ptr != NULL) {
  23                 ucontext_t *ctx = ptr;
  24                 int i;
  25                 mcontext_t *mc = &ctx->uc_mcontext;
  26                 printf("uc_flags 0x%x\n", ctx->uc_flags);
  27                 printf("uc_link %p\n", ctx->uc_link);
  28                 for (i = 0; i < sizeof(ctx->uc_sigmask.__bits) /
  29                     sizeof(ctx->uc_sigmask.__bits[0]); i++)
  30                         printf("uc_sigmask[%d] 0x%x\n", i,
  31                             ctx->uc_sigmask.__bits[i]);
  32                 printf("uc_stack %p %lu 0x%x\n", ctx->uc_stack.ss_sp,
  33                     (unsigned long)ctx->uc_stack.ss_size,
  34                     ctx->uc_stack.ss_flags);
  35                 for (i = 0; i < sizeof(mc->__gregs)/sizeof(mc->__gregs[0]); i++)
  36                         printf("uc_mcontext.greg[%d] 0x%x\n", i,
  37                             mc->__gregs[i]);
  38         }
  39 #endif
  40         assert(info->si_signo == SIGALRM);
  41         assert(info->si_code == SI_TIMER);
  42         assert(info->si_value.sival_int == ITIMER_REAL);
  43         exit(0);
  44 }
  45
  46 int
  47 main(void)
  48 {
  49         struct sigaction sa;
  50         sa.sa_flags = SA_SIGINFO;
  51         sa.sa_sigaction = sigalrm;
  52         sigemptyset(&sa.sa_mask);
  53         sigaction(SIGALRM, &sa, NULL);
  54         for (;;) {
  55                 alarm(1);
  56                 sleep(1);
  57         }
  58         return 0;
  59 }