使用epoll和多线程实现服务器和客户端的代码

#ifndef _CSERVER_H_
#define _CSERVER_H_
#include "task.h"
#include "message.h"
#include <iostream>
#include <sys/socket.h>
#include <sys/epoll.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#define MAX_BUF_SIZE 200
#define MAX_TMP_SIZE 32
class CServer
{
public:
	explicit CServer();
	explicit CServer(const char *server_port, const char *server_ip);
	bool networkInit();
	bool run();
	unsigned char *messageHandle(unsigned char *srcbuf,unsigned int srcbuf_len,unsigned int &res_len);
	//static void *readThread(void *args);
	//static void *writeThread(void *args);

	static void *readThread(void *args);
	static void *writeThread(void *args);
	static void *userdataHandleThread(void *args);

	unsigned int getIntfromBuf(unsigned char *srcBuf);
	void intWriteToucharBuf(int num,unsigned char *dstBuf);
public:
	const static int HEAD_BYTE_NUMS = 4;
private:
	void setnonblocking(int sock);
	
private:
	socklen_t m_sinSize;

	struct sockaddr_in m_serverAddr;
	struct sockaddr_in m_clientAddr;

	int m_serverSockfd;
	int m_clientSockfd;

	int m_epfd;
	int m_nfds;
	struct epoll_event m_ev;
	struct epoll_event m_events[200];

	Task *m_readTaskHead;
	Task *m_readTaskTail;

	Task *m_writeTaskHead;
	Task *m_writeTaskTail;

	Message *m_rawMsgHead;
	Message *m_rawMsgTail;
	Message *m_handledMsgHead;
	Message *m_handledMsgTail;

	pthread_mutex_t m_readMutex;
	pthread_cond_t  m_readCond;

	pthread_mutex_t m_writeMutex;
	pthread_cond_t  m_writeCond;

	pthread_mutex_t m_rawMsgMutex;
	pthread_cond_t  m_rawMsgCond;

	pthread_mutex_t m_handleMsgMutex;
	pthread_cond_t m_handleMsgCond;

	pthread_t m_readThread;
	pthread_t m_writeThread;
	pthread_t m_userDataHandleThread;



};

#endif 

关于epoll 和 多线程的文章很多，我自身也是在不断的检索一些文章后写下的代码，其中参考其他作者的代码 。

其中主要参考了：http://blog.csdn.net/cuiyifang/article/details/7957937 的代码，在此表示感谢！

代码里添加一些自身的东西，以适应发送不同长度的数据。

这些代码的功能：

1.客户端发送一个加法表达式

2.服务器返回结果。

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