shell - PHP 结束 C程序循环
<code>#include <stdlib.h> #include <stdio.h> #include <string.h> int loop; void Stoploop(void){ loop=0; } int main(int argc, char *argsv[]){ int i; loop=1; while(loop==1){ printf("%d/n",i); i++; } return 0; }</string.h></stdio.h></stdlib.h></code>
举例如上,在linux下开始运行此程序。
PHP端调用shell_exec();执行该程序后,如何终止该程序循环?
回复内容:
<code>#include <stdlib.h> #include <stdio.h> #include <string.h> int loop; void Stoploop(void){ loop=0; } int main(int argc, char *argsv[]){ int i; loop=1; while(loop==1){ printf("%d/n",i); i++; } return 0; }</string.h></stdio.h></stdlib.h></code>
举例如上,在linux下开始运行此程序。
PHP端调用shell_exec();执行该程序后,如何终止该程序循环?
通常来讲应该编译成动态库so交由脚本调用,而且这样的无限循环应该开线程,然后需要停止的时候直接杀掉线程就好了。
你这个C程序是一个常驻进程啊。要终止,就是要杀掉这个C程序。直接调kill命令。或者你这个C程序注册了信号,可以发信号终止。
本质上你就是PHP和C进程间通信。
你可查一下进程间通信IPC相关的技术文档了解。
当loop!=1的时候 就结束循环了
比较简单粗暴的方式,同样调用shell_exec(),"kill -9 $pid" 来终止这个程序
C代码改一下, loop=1; 改成变量的形式

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