一个简单的signal实例(c语言）

Posted 2020-10-12 子雅陌曦

 1 #include <signal.h>
 2 #include <unistd.h>
 3 
 4 
 5 void sig_hander(int signum)
 6 {
 7     printf("catch the signal %d\n",signum);
 8     return ;
 9 }
10 
11 
12 int main(int argc,char **argv)
13 {
14     pid_t pid;
15     pid = getpid();
16     printf("pid[%d]\n",getpid());
17     if(signal(SIGINT,sig_hander)==SIG_ERR)
18     {
19         printf("catch error!\n");
20         return -1;
21     }
22     while(1);
23     return 0;
24 }

执行：

[email protected]:mydev/cc $ a.out
pid[8675]
^Ccatch the signal 2
^Ccatch the signal 2
^Ccatch the signal 2