Shared I/O problem
willisfield at 163.com
Thu Mar 17 04:32:41 UTC 2005
We know tasks can be preempted in RTEMS. If one task is using an io
device, at the same time the task is preempted by another task which will
use the io device. The state of the io device will be changed and when the
first task restarts, how to recover the state of the io device? that is to
say how to resolve the situation that one io device can be used between
different tasks of RTEMS?
Thanks for your reading and any answer is appreatiated!
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