Really great C code. However, "timeInMilliseconds" should really use clock_gettime(CLOCK_MONOTIC, ..) instead of gettim eofday(..). A sudden change in time due to NTP, administrator, timezone, etc, could have the loop in "dictRehashMilliseconds" running for longer than expected.

(Here's someone explaining the problem with gettimeofday http://blog.habets.pp.se/2010/09/gettimeofday-should-never-b...)

Good advice, thanks, taking note

Reading this code made my day, thank you.