The doc says call the callback every millisec. However, the time from the start of one callback to the start of the next varies by the time spent in the callback. With a logic analyzer, with a 50 msec callback, I observed 4msec in callback, 54 msec call interval, 19 msec in callback, 69 msec call interval.
The method in pthTimerTick() may be hard to change. (I use timerfd in other applications).
The doc says call the callback every millisec. However, the time from the start of one callback to the start of the next varies by the time spent in the callback. With a logic analyzer, with a 50 msec callback, I observed 4msec in callback, 54 msec call interval, 19 msec in callback, 69 msec call interval.
The method in pthTimerTick() may be hard to change. (I use timerfd in other applications).
Maybe the best solution is to change the doc.