RTEMS C User's Guide
The rtems_task_suspend
directive is used to place either the caller or
another task into a suspended state. The task remains suspended
until a rtems_task_resume
directive is issued. This implies that a
task may be suspended as well as blocked waiting either to
acquire a resource or for the expiration of a timer.
The rtems_task_resume
directive is used to remove another task from
the suspended state. If the task is not also blocked, resuming
it will place it in the ready state, allowing it to once again
compete for the processor and resources. If the task was
blocked as well as suspended, this directive clears the
suspension and leaves the task in the blocked state.
Suspending a task which is already suspended or resuming a
task which is not suspended is considered an error.
The rtems_task_is_suspended can be used to
determine if a task is currently suspended.
RTEMS C User's Guide
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