58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/* $NetBSD: sigalrm.c,v 1.3 2003/11/13 06:48:31 simonb Exp $ */
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#include <assert.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include <sys/ucontext.h>
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void
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sigalrm(int signo, siginfo_t *info, void *ptr)
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{
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#ifdef DEBUG
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printf("%d %p %p\n", signo, info, ptr);
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if (info != NULL) {
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printf("si_signo=%d\n", info->si_signo);
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printf("si_errno=%d\n", info->si_errno);
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printf("si_code=%d\n", info->si_code);
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printf("si_sigval.sival_int=%d\n", info->si_sigval.sival_int);
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}
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if (ptr != NULL) {
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ucontext_t *ctx = ptr;
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int i;
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mcontext_t *mc = &ctx->uc_mcontext;
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printf("uc_flags 0x%x\n", ctx->uc_flags);
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printf("uc_link %p\n", ctx->uc_link);
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for (i = 0; i < sizeof(ctx->uc_sigmask.__bits) /
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sizeof(ctx->uc_sigmask.__bits[0]); i++)
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printf("uc_sigmask[%d] 0x%x\n", i,
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ctx->uc_sigmask.__bits[i]);
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printf("uc_stack %p %lu 0x%x\n", ctx->uc_stack.ss_sp,
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(unsigned long)ctx->uc_stack.ss_size,
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ctx->uc_stack.ss_flags);
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for (i = 0; i < sizeof(mc->__gregs)/sizeof(mc->__gregs[0]); i++)
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printf("uc_mcontext.greg[%d] 0x%x\n", i,
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mc->__gregs[i]);
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}
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#endif
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assert(info->si_signo == SIGALRM);
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assert(info->si_code == SI_TIMER);
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assert(info->si_sigval.sival_int == ITIMER_REAL);
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exit(0);
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}
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int
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main(void)
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{
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struct sigaction sa;
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sa.sa_flags = SA_SIGINFO;
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sa.sa_sigaction = sigalrm;
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sigemptyset(&sa.sa_mask);
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sigaction(SIGALRM, &sa, NULL);
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for (;;) {
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alarm(1);
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sleep(1);
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}
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return 0;
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}
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