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c-user: Use document internal links

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Sebastian Huber 2021-12-21 16:58:56 +01:00
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c-user/clock/background.rst
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@ -87,8 +87,9 @@ scheduling algorithm. The length of time allocated to each task is known as
the quantum or timeslice.
The system's timeslice is defined as an integral number of ticks, and is
specified in the Configuration Table. The timeslice is defined for the entire
system of tasks, but timeslicing is enabled and disabled on a per task basis.
specified by the :ref:`CONFIGURE_TICKS_PER_TIMESLICE` application configuration
option. The timeslice is defined for the entire system of tasks, but
timeslicing is enabled and disabled on a per task basis.
The clock tick directives implement timeslicing by decrementing the
running task's time-remaining counter when both timeslicing and preemption are
@ -102,10 +103,10 @@ Delays
A sleep timer allows a task to delay for a given interval or up until a given
time, and then wake and continue execution. This type of timer is created
automatically by the ``rtems_task_wake_after`` and ``rtems_task_wake_when``
directives and, as a result, does not have an RTEMS ID. Once activated, a
sleep timer cannot be explicitly deleted. Each task may activate one and only
one sleep timer at a time.
automatically by the :ref:`InterfaceRtemsTaskWakeAfter` and
:ref:`InterfaceRtemsTaskWakeWhen` directives and, as a result, does not have an
object identifier. Once activated, a sleep timer cannot be explicitly deleted.
Each task may activate one and only one sleep timer at a time.
.. index:: timeouts
@ -113,7 +114,8 @@ Timeouts
--------
Timeouts are a special type of timer automatically created when the timeout
option is used on the ``rtems_message_queue_receive``, ``rtems_event_receive``,
``rtems_semaphore_obtain`` and ``rtems_region_get_segment`` directives. Each
task may have one and only one timeout active at a time. When a timeout
expires, it unblocks the task with a timeout status code.
option is used on the :ref:`InterfaceRtemsBarrierWait`,
:ref:`InterfaceRtemsEventReceive`, :ref:`InterfaceRtemsMessageQueueReceive`,
:ref:`InterfaceRtemsRegionGetSegment`, and :ref:`InterfaceRtemsSemaphoreObtain`
directives. Each task may have one and only one timeout active at a time.
When a timeout expires, it unblocks the task with a timeout status code.