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84 lines
2.1 KiB
84 lines
2.1 KiB
#include <iostream>
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#include <event2/event.h>
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#include <signal.h>
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using namespace std;
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bool isexit = false;
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//sock 文件描述符 which 事件类型 arg传递的参数
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static void Ctrl_C(int sock,short which , void* arg){
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cout << "Ctrl_C" << endl;
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event_base * base = (event_base *)arg;
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//执行完当前事件函数退出
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//event_base_loopbreak(base);
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//运行完所有的活动事件在退出，事件循环没有运行时，也要等运行一次在退出
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timeval t= {3,0}; //至少运行3s退出
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event_base_loopexit(base,&t);
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}
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static void Kill(int sock,short which , void* arg){
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cout << "Kill" << endl;
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event *ev = (event*)arg;
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//如果处于非待决
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if(!evsignal_pending(ev,NULL)){
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event_del(ev);
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event_add(ev,NULL); //再次添加进来
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}
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}
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int main(int agrc,char** agrv){
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event_base *base = event_base_new();
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//添加信号 ctrl+c ,处于no pending 状态
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//evsignal_new 隐藏的状态 EV_SIGNAL|EV_PERSIST
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event *csig = evsignal_new(base,SIGINT,Ctrl_C,base);
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if(!csig){
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cerr << "SIGNAL evsignal_new failed!" << endl;
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return -1;
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}
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if (event_add(csig,0) != 0){
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cerr << "SIGANL event_add failed" << endl;
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}
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//添加kill信号
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//非持久事件，只进入一次 event_self_cbarg()传递当前的event
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event *ksig = event_new(base,SIGTERM,EV_SIGNAL,Kill,
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event_self_cbarg());
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if(!ksig){
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cerr << "SIGNAL evsignal_new failed!" << endl;
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return -1;
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}
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if (event_add(ksig,0) != 0){
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cerr << "SIGANL event_add failed" << endl;
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}
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//进入事件主循环
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//event_base_dispatch(base);
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//EVLOOP_ONCE 等待一个事件运行，直到没有活动事件就退出
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//EVLOOP_NONBLOCK 有活动事件就处理，没有就返回0
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//event_base_loop(base,EVLOOP_NONBLOCK);
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// while (isexit)
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// {
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// event_base_loop(base,EVLOOP_NONBLOCK);
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// }
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//没有注册事件也不返回，用于事件后期多线程添加
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event_base_loop(base,EVLOOP_NO_EXIT_ON_EMPTY);
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event_free(csig);
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event_base_free(base);
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return 0;
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}
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