Full_Name: Howard Chu
Submission from: (NULL) (184.108.40.206)
Submitted by: hyc
ldap_pvt_gettime is used to to generate CSNs with microsecond precision. On
Windows it goes thru some gyrations to calculate microseconds since the normal
SystemTime only has a resolution of 10-15 milliseconds. Unfortunately it doesn't
properly detect when the microsecond counter wraps around back to zero, so it
can occasionally return timestamps 1 second in the past.