erik malund wrote:
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<Does your RTOS allow a task to say "need no time now".
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i don't understand.what do you mean?

Another possibility, if your RTOS allow it, would be to do, what I suggest done in a software interrupt, in a high priority non-preemptable task.
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yes,that is my idea too.after timer preempts
current task a non-preemptible region should
start which should do this.one way is to poll
timer tick field of all the tasks.and then
activate or deactivate tasks.
but if no.of tasks that request timeout at same juncture their is an uncertainity in
response time.my question was about some method of eliminating that.
regards
pranav