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QueryPerformanceCount rollover

Started by BeanDog Jan 24, 2003 at 4:41 PM 0 replies 400+ views

Original Post

Jan 24, 2003 at 4:41 PM

How can I tell when and if a QueryPeformanceCount high-resolution timer will roll over? In other words, I''m synchronizing machines using high-performance counters. I''m worried about what will happen when one or the other rolls over. Do they roll over at midnight like timeGetTime(); ~BenDilts( void );

Dean Harding

Jan 24, 2003 at 4:49 PM

I doubt you''d ever have to worry about it rolling over. The performance counters generally return the number of "ticks" since the computer was started, and with a frequency of (say) 1GHz, the counter wouldn''t roll back to zero for 500 years.

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