来自nginx代码:
void
ngx_gettimeofday(struct timeval *tp)
{
uint64_t intervals;
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
/*
* A file time is a 64-bit value that represents the number
* of 100-nanosecond intervals that have elapsed since
* January 1, 1601 12:00 A.M. UTC.
*
* Betw