void CurlConnect::WateForMulitCurl(CURLM* curl_m)
{
//等待数据的填充
/*
* 调用curl_multi_perform函数执行curl请求
* url_multi_perform返回CURLM_CALL_MULTI_PERFORM时，表示需要继续调用该函数直到返回值不是CURLM_CALL_MULTI_PERFORM为止
* running_handles变量返回正在处理的easy curl数量，running_handles为0表示当前没有正在执行的curl请求
*/
int running_handles;
while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(curl_m, &running_handles))
{
//cout << running_handles << endl;
}
/**
* 为了避免循环调用curl_multi_perform产生的cpu持续占用的问题，采用select来监听文件描述符
*/
while (running_handles)
{
if (-1 == curl_multi_select(curl_m))
{
//cerr << "select error" << endl;
break;
}
else
{
// select监听到事件，调用curl_multi_perform通知curl执行相应的操作 //
while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(curl_m, &running_handles))
{
//cout << "select: " << running_handles << endl;
}
}
//cout << "select: " << running_handles << endl;
}
}
int curl_multi_done(CURL* curl_e, int& reDirectCount)
{
int iRetcode = -1;
CURLM * curl_m = curl_multi_init();
curl_multi_add_handle(curl_m, curl_e);
/*
* 调用curl_multi_perform函数执行curl请求
* url_multi_perform返回CURLM_CALL_MULTI_PERFORM时，表示需要继续调用该函数直到返回值不是CURLM_CALL_MULTI_PERFORM为止
* running_handles变量返回正在处理的easy curl数量，running_handles为0表示当前没有正在执行的curl请求
*/
int running_handles;
while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(curl_m, &running_handles));
/**
* 为了避免循环调用curl_multi_perform产生的cpu持续占用的问题，采用select来监听文件描述符
*/
while (running_handles)
{
if (-1 == curl_multi_select(curl_m, &running_handles))
{
break;
}
else {
// select监听到事件，调用curl_multi_perform通知curl执行相应的操作 //
while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(curl_m, &running_handles));
}
}
// 输出执行结果 //
int msgs_left;
CURLMsg * msg;
CURLcode code = CURL_LAST;
while ((msg = curl_multi_info_read(curl_m, &msgs_left)))
{
if ( CURLMSG_DONE == msg->msg )
{
code = msg->data.result;
if ( code == CURLE_OK )
{
curl_easy_getinfo(curl_e, CURLINFO_HTTP_CODE, &iRetcode);
curl_easy_getinfo(curl_e, CURLINFO_REDIRECT_COUNT, &reDirectCount);
}
}
}
curl_multi_remove_handle(curl_m, curl_e);
curl_easy_cleanup(curl_e);
curl_multi_cleanup(curl_m);
return iRetcode;
}
