麻将网络模块分析

1.为了让麻将同时支持TCP长连模式 ,和http短连模式,需要开启新的线程来支持

而cocos2dx本身对多线程支持并不是很好,所以需要用到,

#include "pthread.h"

并且需要引入pthreadVSE2.lib静态链接库

来维持多线程,监听网络消息数据

CLobbyCommon.h

网络状态定义:

typedef enum
{
	_LOBBY_NET_NULL_	= 0,//无连接
	_LOBBY_NET_ING_,		//连接中
	_LOBBY_NET_SUCCESS_,	//连接成功
	_LOBBY_NET_FAILED_,		//链接失败
	_LOBBY_NET_ERROR_		//连接错误
}LOBBY_NET_STATUS;

class CLobbyCommon
{
public:
	CLobbyCommon();
	~CLobbyCommon();

public:
	static CLobbyCommon* getInstance(void);
	static void DeleteInstance(void);
        CMyNetWork* GetNetHandle(void);
        pthread_t m_theradID;//线程ID

        int StartDownLoading( char* path, int type, char* postBuf, int len, int bIsHT = 0);
        int StopDownLoading(int handle);
        static void LobbyNetCallBack( int event, int index, void* buf, int len );
private:
    static CLobbyCommon* instance;
    class CGarbo // 它的唯一工作就是在析构函数中删除CSingleton的实例
    {
        public:
            ~CGarbo()
            {
                if (CLobbyCommon::instance)
                    delete CLobbyCommon::instance;
            }
    };
    static CGarbo Garbo; // 声明一个静态成员，在程序结束时，系统会调用它的析构函数，注意这里仅仅是声明，还需要在相应的cpp文件中对静态成员进行定义哦。
//(疑问:静态成员变量是何时被销毁的,是该单例类的对象调用析构函数的时候被销毁的吗,还是直到系统结束后才被销毁)

public:
     CMyNetWork m_lobby_net;//http 网络模块
    int m_netHandle[3];//同时支持多个http连接,比如计费数据和其他网络请求

    char m_netBuf[1024];    //数据
    int m_netBufLen;        //数据下发的长度
    int m_netStatus;        //网络状态
    int m_nethandle;       //单次连接网络句柄
};

在麻将公共模块单例类的构造函数中开启新线程

CLobbyCommon::CLobbyCommon()
{
	pthread_create( &m_theradID, NULL, Run, NULL );	//创建线程
}

析构函数中阻塞当前线程直到他的主线程结束而销毁

CLobbyCommon::~CLobbyCommon()
{
	m_exit = 1;
	pthread_join( m_theradID, NULL );	//阻塞当前的线程，直到另外一个线程运行结束
}

线程的执行函数循环执行网络模块run方法

void* CLobbyCommon::Run(void* argv)
{
	while( 1 )
	{
	        CLobbyCommon::getInstance()->m_lobby_net.run();//运行网络模块run监听网络数据
#ifdef _WIN32
		sleep( 1000 );//1秒1次
#else
		sleep( 1 );
#endif
	}
	return NULL;
}

发送和下载数据

void CLobbyCommon::LobbyNetCallBack( int event, int index, void* buf, int len )
{
	if ( event == NET_CON_SUCCESS )
	{
		if( index == instance->m_netHandle[0] )	//??
		{
			instance->m_netBufLen = 0;
			memset( instance->m_netBuf, 0, _NET_BUF_LEN_ );
		}
		else if( index == instance->m_netHandle[1] )
		{
			instance->m_billnetBufLen = 0;
			memset( instance->m_billnetBuf, 0, _NET_BUF_LEN_ );
		}
	}
	else if ( event == NET_READ )
	{
		if( index == instance->m_netHandle[0] )
		{
			memcpy( instance->m_netBuf, buf, len );	//得到下载数据
			instance->m_netBufLen += len;
		}
		else if( index == instance->m_netHandle[1] )
		{
			memcpy( instance->m_billnetBuf, buf, len );
			instance->m_billnetBufLen += len;
		}
	}
	else if( event == NET_FINISH )
	{
		int status = instance->m_lobby_net.isSuccess(index);
		int netstatus = (status == 1) ? _LOBBY_NET_SUCCESS_ : _LOBBY_NET_FAILED_;
		if( index == instance->m_netHandle[0] )
		{
			instance->m_netStatus = netstatus;
		}
		else if( index == instance->m_netHandle[1] )
		{
			instance->m_billnetStatus = netstatus;//计费网络
		}
		instance->StopDownLoading(index);
	}
	else if( event <= NET_ERROR )
	{
		if( index == instance->m_netHandle[0] )
		{
			instance->m_netStatus = _LOBBY_NET_ERROR_;
		}
		else if( index == instance->m_netHandle[1] )
		{
			instance->m_billnetStatus = _LOBBY_NET_ERROR_;//计费网络?
		}
		instance->StopDownLoading(index);
	}
}

//下载数据				   		  //发送数据     数据长度
int CLobbyCommon::StartDownLoading( char* path, int type, char* postBuf, int len, int bIsHT )
{
	char strURL[256] = {0};
	long ip =MJCommon::getInstance()->WebServiceInfo.dwIp;
	if( (path == NULL) || (strlen(path) == 0) )
	{
		return -1;
	}

	sprintf( strURL, "http://%s:%d/%s&qudao=%d&ver=%d", inet_ntoa( *(in_addr*)&ip ), MJCommon::getInstance()->WebServiceInfo.dwPort, path, _USER_QUDAO_,VERSION_CODE );																																			
	int handle = m_lobby_net.CreateNet( strURL, MJCommon::getInstance()->WebServiceInfo.dwPort, type, CLobbyCommon::getInstance()->LobbyNetCallBack, postBuf, len );	//这里下载数据
	if( handle >= 0 )
	{
		if (  bIsHT ==  0 )
		{
			m_netStatus = _LOBBY_NET_ING_;
			m_netHandle[0] = handle;
		}
		else  //下载计费数据
		{
			m_billnetStatus = _LOBBY_NET_ING_;
			m_netHandle[1] = handle;
		}
	}
	return handle;
}

int CLobbyCommon::StopDownLoading( int handle )
{
	for ( int i = 0; i < MAX_NET; i++ )
	{
		if( m_netHandle[i] == handle )
		{
			m_lobby_net.DeleteNet( handle );
			m_netHandle[i] = -1;
		}
	}
	return 0;
}