c++线程函数参数传递的问题
test.cpp中，在一个类成员函数中启动线程：
int CSingleUserMiner::start_threads(string start_time,string end_time,string id,int type,string flag)
{
...
CreateThread(NULL, 0, CSUMiner::createHandleThread, this, 0, NULL);
...
}
test.h中：
线程函数
static DWORD WINAPI createHandleThread(LPVOID lpParam)
{
CSUMiner* pThis = (CSUMiner *)lpParam;
return pThis->get_data();
}
DWORD get_data(string tablename,string id,int type);
现在遇到的问题是，不知道如何将线程函数需要的这几个参数传过去？
如何实现？谢谢
[解决办法]
将这些参数组成一个结构体类型，createHandleThread里面把lpParam转换成指向结构体的指针，然后访问结构体的成员，就是你需要的各个参数。
[解决办法]
typedef tagMyParam
{
string start_time;
string end_time;
string id;
int type;
string flag;
CSingleUserMiner * pCaller;
}MYPARAM;
MYPARAM m_threadParam;
int CSingleUserMiner::start_threads(string start_time,string end_time,string id,int type,string flag)
{
...
threadParam.start_time = start_time;
threadParam.end_time = end_time;
threadParam.id = id;
threadParam.type = type;
threadParam.flag = flag;
threadParam.pCaller = this;
CreateThread(NULL, 0, CSUMiner::createHandleThread, &MYPARAM, 0, NULL);
...
}
static DWORD WINAPI createHandleThread(LPVOID lpParam)
{
MYPARAM* pParam= (MYPARAM*)lpParam;
CSUMiner* pThis = pParam->pCaller;
....// other params
return pThis->get_data();
}
[解决办法]
结构体 或者 全局变量
