实现过程:
#include<unistd.h>
#include<string.h>
#include<stdlib.h>
#include<stdio.h>
#include<signal.h>
#include<sys/types.h>
#include<sys/wait.h>
pid_t pid1,pid2;
void CallKill(int a)
{
kill(pid1,20);
kill(pid2,21);
}
void Child_1()
{
printf("Child Process1 is Killed by Parent!\r\n");
exit(0);
}
void Child_2()
{
printf("Child Process2 is Killed by Parent!\r\n");
exit(0);
}
int main()
{
pid1 = fork();
if(pid1 == 0)
{
//signal(SIGINT,SIG_IGN);//忽略收到的中断指令
signal(SIGQUIT,SIG_IGN);
signal(20,Child_1);//注册中断信号对应的函数指针
sleep(5);//切换进程
}
else
{
pid2 = fork();
if(pid2 == 0)
{
//signal(SIGINT,SIG_IGN);
signal(SIGQUIT,SIG_IGN);
signal(21,Child_2);//注册中断信号对应的函数指针
sleep(5);
}
else
{
//signal(SIGINT,CallKill);
signal(SIGQUIT,CallKill);
sleep(10);//切换到子进程去执行
wait(0);//等待子进程全部推出
wait(0);
printf("Parent Process is Killed\r\n");
exit(0);
}
}
return 0;
}
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