nested task lock/unlock in rtems?
Joel Sherrill <joel@OARcorp.com>
joel.sherrill at OARcorp.com
Tue Jan 11 16:22:23 UTC 2005
Smith, Gene wrote:
> Can rtems keep track of nested calls to disable/enable preemption?
> E.g. within a task:
> Where preemption is disabled on the first lock and not re-enabled until
> the last unlock is called? And lock and unlock could be accomplished by
> a call to rtems_task_mode. But is there anything in rtems to ensure a
Do you mean via premption via the rtems_task_mode service?
If so, then no.
If you mean via the critical section routines _Thread_Disable_dispatch
and friends, then the answer is yes -- a nest count is maintained.
Joel Sherrill, Ph.D. Director of Research & Development
joel at OARcorp.com On-Line Applications Research
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