boost日期、时间操作

 	#include  
 	boost::posix_time::ptime now = boost::posix_time::from_time_t(time(NULL)); 
 	boost::posix_time::to_simple_string(now); // CCYY-mmm-dd hh:mm:ss.fffffff 
 	boost::posix_time::to_iso_string(now); // YYYYMMDDTHHMMSS 
 	boost::posix_time::to_iso_extended_string(now); // YYYY-MM-DDTHH:MM:SS 
 
 #include  
 	    void sleep(uint32_t seconds)
     {
         boost::xtime xt;
         boost::xtime_get(&xt, boost::TIME_UTC_);
         xt.sec += seconds;
         boost::thread::sleep(xt); // Sleep for 1 second
     }