#ifndef TIMEGET_US_S64
#include <sys/time.h>
#define TIMEGET_US_S64() ({   struct timeval time_val;gettimeofday(&time_val, 0);   (long long int)(((long long int)time_val.tv_sec*1000000 + (long long int)time_val.tv_usec));   })
#endif//TIMEGET_US_S64