p8-6.c

SUN Solaris8平台下进程间通信

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
volatile sig_atomic_t keep_going = 1;
void catch_alarm(int sig)
{
    keep_going = 0;
    puts("catch alarm");
    signal (sig, catch_alarm);    /* SVR4, 恢复信号动作 */
}
void do_stuff(void)
{
    puts("Doing stuff while wait for alarm ... ");
}
int main(void)
{
    signal(SIGALRM, catch_alarm);   /* SVR4, 设置信号句柄 */
    alarm(2);
    while(keep_going)
        do_stuff();
    puts("SUCCESS"); 
    return 0;
}