p8-2.c

SUN Solaris8平台下进程间通信

#include <signal.h>
#include <stdio.h>
#include "err_exit.h"
static void sig_usr(int);   /* 二个信号同一个句柄 */
int main(void)
{
   if(signal(SIGUSR1, sig_usr) == SIG_ERR)
      err_exit ("can't catch SIGUSR1\n");
   if(signal(SIGUSR2, sig_usr) == SIG_ERR)
      err_exit ("can't catch SIGUSR2\n");
   for(; ;)
      pause();
}
static void sig_usr(int signo)       /* 信号SIGUSR1和SIGUSR2的句柄 */
{
   if(signo == SIGUSR1)
      printf("received SIGUSR1\n");
   else if(signo == SIGUSR2)
      printf("received SIGUSR2\n");
   else
      printf("received signal %d\n");
   return;
}