信号¶
signal
:关联自定义信号处理函数raise
:主动触发某个信号void signalHandler(int)
:信号处理函数格式- 示例
#include<signal.h>
#include<stdlib.h>
#include<stdio.h>
#include<unistd.h>
void signalHandler(int sigNum){
printf("signal is [%d]\n", sigNum);
exit(sigNum);
}
int main(){
signal(SIGINT, signalHandler);
int i = 0;
while (1)
{
++i;
printf("sleep 2 s\n");
sleep(2);
if(i>3){
raise(SIGINT);
}
}
return 0;
}