1
我想從我的代碼中啓動計算器應用程序,用sigint-2中斷它表明它已被中斷,再次啓動它,然後用sigquit-9退出它,想法是在它內部中斷它C代碼,因此沒有必要按ctrl-c或ctrl- \SIGINT和SIGQUIT
編寫一個C程序,通過signalfd文件描述符接受信號SIGINT和SIGQUIT。程序在接受SIGQUIT信號後終止。
我想從我的代碼中啓動計算器應用程序,用sigint-2中斷它表明它已被中斷,再次啓動它,然後用sigquit-9退出它,想法是在它內部中斷它C代碼,因此沒有必要按ctrl-c或ctrl- \SIGINT和SIGQUIT
編寫一個C程序,通過signalfd文件描述符接受信號SIGINT和SIGQUIT。程序在接受SIGQUIT信號後終止。
我想這可能是你在找什麼
//
// main.c
// Project 4
//
// Found help with understanding and coding at
// http://www.thegeekstuff.com/2012/03/catch-signals-sample-c-code/
//
#include<stdio.h>
#include<signal.h>
#include<unistd.h>
//signal handling function that will except ctrl-\ and ctrl-c
void sig_handler(int signo)
{
//looks for ctrl-c which has a value of 2
if (signo == SIGINT)
printf("\nreceived SIGINT\n");
//looks for ctrl-\ which has a value of 9
else if (signo == SIGQUIT)
printf("\nreceived SIGQUIT\n");
}
int main(void)
{
//these if statement catch errors
if (signal(SIGINT, sig_handler) == SIG_ERR)
printf("\ncan't catch SIGINT\n");
if (signal(SIGQUIT, sig_handler) == SIG_ERR)
printf("\ncan't catch SIGQUIT\n");
//Runs the program infinitely so we can continue to input signals
while(1)
sleep(1);
return 0;
}
表示有點令人毛骨悚然。你們相處得很好嗎? :) – 2014-11-05 19:59:09
什麼是你的問題? – 2014-11-05 01:18:27
什麼是C語言的語法來啓動一個進程,然後中斷它,然後結束它? – FlipFlopSquid 2014-11-05 01:26:55