From 599af79f8b578c2785db7c0d81af23e4400a49e2 Mon Sep 17 00:00:00 2001
From: panyufeng <3043130461@qq.com>
Date: Tue, 8 Jun 2021 23:48:22 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E4=BA=A4libevent=E7=9B=B8=E5=85=B3?=
 =?UTF-8?q?=E9=85=8D=E7=BD=AEcode?=
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---
 test_conf/test_conf.cpp | 60 +++++++++++++++++++++++++++++++++--------
 1 file changed, 49 insertions(+), 11 deletions(-)

diff --git a/test_conf/test_conf.cpp b/test_conf/test_conf.cpp
index aa151a6..d89d43e 100644
--- a/test_conf/test_conf.cpp
+++ b/test_conf/test_conf.cpp
@@ -1,13 +1,22 @@
 
 #include <iostream>
 #include<event2/event.h>
-
-#ifndef _WIN32
-#include <signal.h>
+#include<event2/thread.h>
+#include<event2/listener.h>
+#ifdef _WIN32
+	
+#else
+	#include <signal.h>
 #endif // !_WIN32
 
 using namespace std;
 
+#define SPORT 5001
+
+void listen_cb(struct evconnlistener *, evutil_socket_t, struct sockaddr *, int socklen, void *arg) {
+	std::cout << "listen to be" << std::endl;
+}
+
 int main()
 {
 #ifdef _WIN32
@@ -23,16 +32,32 @@ int main()
 	//初始化libevent上下文
 	event_config *conf = event_config_new();
 
-	//显示支持的网络模式
+	//打印支持的网络模式
 	const char** methods =  event_get_supported_methods();
 	cout << "supported_methods" << endl;
 	for (int i = 0; methods[i] != NULL; i++) {
 		cout << methods[i] << endl;
 	}
 
-
 	//设置特征
-	//event_config_require_features(conf,  EV_FEATURE_FDS);
+	//设置了EV_FEATURE_FDS 其它特征就无法设置，在windows中EV_FEATURE_FDS无效
+	//event_config_require_features(conf,  EV_FEATURE_FDS);  //不支持epoll
+
+	//设置网络模型使用select
+	//event_config_avoid_method(conf, "epoll");  //linux 默认顺序为 epoll -> poll -> select
+	//event_config_avoid_method(conf, "poll"); 
+
+
+	//windows中支持IOCP(线程池) 要查看该项是否开启成功，可以在运行程序后打开任务管理器查看线程数量
+#ifdef _WIN32
+	event_config_set_flag(conf, EVENT_BASE_FLAG_STARTUP_IOCP);
+	evthread_use_windows_threads();
+	//设置cpu数量
+	SYSTEM_INFO si;
+	GetSystemInfo(&si);
+	event_config_set_num_cpus_hint(conf, si.dwNumberOfProcessors);
+#endif
+
 
 	//初始化配置上下文
 	event_base* base =  event_base_new_with_config(conf);
@@ -45,7 +70,6 @@ int main()
 			cerr << "event_base_new failed" << endl;
 			return 0;
 		}
-
 	}
 	else {
 		//获取当前网络模型
@@ -79,14 +103,28 @@ int main()
 			cout << "EV_FEATURE_EARLY_CLOSE events are not supported" << endl;
 		}
 
-		 
-
 		cout << "event_base_new_with_config success!" << endl;
-		event_config_free(conf);
-	}
 
 
+		sockaddr_in sin;
+		memset(&sin, 0, sizeof(sin));
+		sin.sin_family = AF_INET;
+		sin.sin_port = htons(SPORT);
+
+		evconnlistener * ev = evconnlistener_new_bind(base, //libevent上下文
+			listen_cb, //接收到连接的回调函数
+			base, //回调函数获取的参数(根据业务来)
+			LEV_OPT_REUSEABLE | LEV_OPT_CLOSE_ON_FREE, //地址重用，evconnlistener关闭同时关闭socket
+			10,  //连接队列大小，对应listen函数参数
+			(sockaddr*)&sin,//绑定的地址和端口
+			sizeof(sin)
+		);
+		event_base_dispatch(base);
+		event_base_free(base);
+		evconnlistener_free(ev);
 
+		event_config_free(conf);
+	}
 	return 0;
 }