使用注释掉的代码就特别慢，超级慢
int find_task = 0;
std::map<std::string, std::map<unsigned int, std::vector<std::string>>>::iterator git;
git = g_m_task_files.find(task_id);
//for(auto it : g_m_task_files)
if(git != g_m_task_files.end())
{
//if(it.first == task_id) {
find_task = 1;
std::map<unsigned int, std::vector<std::string>>
&m_task_files = git->second;