sleep the thread instead of yield in cooperative scheduling

[taufiqwidi]

hi,

sorry for this newbie question but, can we sleep the thread for specific amount of time instead of yield in the cooperative scheduling?. cause i cant make it work to sleep the thread when in cooperative scheduling.

Thank you,
Taufiq

[Giovanni]

Yield is not for making the thread sleep, you need chThdSleepMilliseconds().

Giovanni

[mikeprotts]

chThdYield is good when you have equal priority threads and you want to avoid them blocking each other, but run without delay if possible. If threads are not equal priority you'll always get the higher priority jumping back in.

chThdSleepMilliseconds and chThdSleepMicroseconds are good for threads that need to perform processing in a fairly periodic interval, or where an asynchronous task is expected to complete in a predictable time. The interval is not precise, especially when small.

chThdSuspend in a thread, then chThreadResume (from another thread) or chThdResumeI (from an interrupt) is good when you want to start processing based on an event. This allows the processor to idle, or let a lower priority thread run.

Mike