[rtems commit] rtems: Doxygen Clean Up Task #3
Jennifer Averett
jennifer at rtems.org
Fri Dec 28 23:24:35 UTC 2012
Module: rtems
Branch: master
Commit: 7ee5bc4ce1d2b596356a5c99ca1e2240ea1f8b62
Changeset: http://git.rtems.org/rtems/commit/?id=7ee5bc4ce1d2b596356a5c99ca1e2240ea1f8b62
Author: Mathew Kallada <matkallada at gmail.com>
Date: Fri Dec 28 17:23:21 2012 -0600
rtems: Doxygen Clean Up Task #3
---
cpukit/rtems/inline/rtems/rtems/attr.inl | 38 ++++++++++++++++---------
cpukit/rtems/inline/rtems/rtems/dpmem.inl | 10 ++++---
cpukit/rtems/inline/rtems/rtems/eventset.inl | 8 +++---
cpukit/rtems/inline/rtems/rtems/message.inl | 7 +++--
cpukit/rtems/inline/rtems/rtems/modes.inl | 15 +++++-----
cpukit/rtems/inline/rtems/rtems/options.inl | 4 +-
cpukit/rtems/inline/rtems/rtems/part.inl | 20 +++++++------
cpukit/rtems/inline/rtems/rtems/ratemon.inl | 16 ++++++-----
cpukit/rtems/inline/rtems/rtems/sem.inl | 12 +++++---
cpukit/rtems/inline/rtems/rtems/status.inl | 4 +-
cpukit/rtems/inline/rtems/rtems/tasks.inl | 10 +++---
11 files changed, 82 insertions(+), 62 deletions(-)
diff --git a/cpukit/rtems/inline/rtems/rtems/attr.inl b/cpukit/rtems/inline/rtems/rtems/attr.inl
index 75d62ad..126259a 100644
--- a/cpukit/rtems/inline/rtems/rtems/attr.inl
+++ b/cpukit/rtems/inline/rtems/rtems/attr.inl
@@ -29,7 +29,7 @@
*/
/**
- * @brief Attributes_Set
+ * @brief Sets the requested new_attributes in the attribute_set passed in.
*
* This function sets the requested new_attributes in the attribute_set
* passed in. The result is returned to the user.
@@ -43,7 +43,8 @@ RTEMS_INLINE_ROUTINE rtems_attribute _Attributes_Set (
}
/**
- * @brief Attributes_Clear
+ * @brief Clears the requested new_attributes in the attribute_set
+ * passed in.
*
* This function clears the requested new_attributes in the attribute_set
* passed in. The result is returned to the user.
@@ -57,7 +58,8 @@ RTEMS_INLINE_ROUTINE rtems_attribute _Attributes_Clear (
}
/**
- * @brief Attributes_Is_floating_point
+ * @brief Checks if the floating point attribute is
+ * enabled in the attribute_set.
*
* This function returns TRUE if the floating point attribute is
* enabled in the attribute_set and FALSE otherwise.
@@ -71,7 +73,8 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_floating_point(
#if defined(RTEMS_MULTIPROCESSING)
/**
- * @brief Attributes_Is_global
+ * @brief Checks if the global object attribute is enabled in
+ * the attribute_set.
*
* This function returns TRUE if the global object attribute is
* enabled in the attribute_set and FALSE otherwise.
@@ -85,7 +88,7 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_global(
#endif
/**
- * @brief Attributes_Is_priority
+ * @brief Checks if the priority attribute is enabled in the attribute_set.
*
* This function returns TRUE if the priority attribute is
* enabled in the attribute_set and FALSE otherwise.
@@ -98,7 +101,8 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_priority(
}
/**
- * @brief Attributes_Is_binary_semaphore
+ * @brief Checks if the binary semaphore attribute is
+ * enabled in the attribute_set.
*
* This function returns TRUE if the binary semaphore attribute is
* enabled in the attribute_set and FALSE otherwise.
@@ -111,21 +115,23 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_binary_semaphore(
}
/**
- * @brief Attributes_Is_simple_binary_semaphore
+ * @brief Checks if the simple binary semaphore attribute is
+ * enabled in the attribute_set
*
* This function returns TRUE if the simple binary semaphore attribute is
* enabled in the attribute_set and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE bool _Attributes_Is_simple_binary_semaphore(
rtems_attribute attribute_set
-)
+)
{
return
((attribute_set & RTEMS_SEMAPHORE_CLASS) == RTEMS_SIMPLE_BINARY_SEMAPHORE);
-}
+}
/**
- * @brief Attributes_Is_counting_semaphore
+ * @brief Checks if the counting semaphore attribute is
+ * enabled in the attribute_set
*
* This function returns TRUE if the counting semaphore attribute is
* enabled in the attribute_set and FALSE otherwise.
@@ -138,7 +144,8 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_counting_semaphore(
}
/**
- * @brief Attributes_Is_inherit_priority
+ * @brief Checks if the priority inheritance attribute
+ * is enabled in the attribute_set
*
* This function returns TRUE if the priority inheritance attribute
* is enabled in the attribute_set and FALSE otherwise.
@@ -151,7 +158,8 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_inherit_priority(
}
/**
- * @brief Attributes_Is_priority_ceiling
+ * @brief Checks if the priority ceiling attribute
+ * is enabled in the attribute_set
*
* This function returns TRUE if the priority ceiling attribute
* is enabled in the attribute_set and FALSE otherwise.
@@ -164,7 +172,8 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_priority_ceiling(
}
/**
- * @brief Attributes_Is_barrier_automatic
+ * @brief Checks if the barrier automatic release
+ * attribute is enabled in the attribute_set
*
* This function returns TRUE if the barrier automatic release
* attribute is enabled in the attribute_set and FALSE otherwise.
@@ -177,7 +186,8 @@ RTEMS_INLINE_ROUTINE bool _Attributes_Is_barrier_automatic(
}
/**
- * @brief Attributes_Is_system_task
+ * @brief Checks if the system task attribute
+ * is enabled in the attribute_set.
*
* This function returns TRUE if the system task attribute
* is enabled in the attribute_set and FALSE otherwise.
diff --git a/cpukit/rtems/inline/rtems/rtems/dpmem.inl b/cpukit/rtems/inline/rtems/rtems/dpmem.inl
index c445603..19a4add 100644
--- a/cpukit/rtems/inline/rtems/rtems/dpmem.inl
+++ b/cpukit/rtems/inline/rtems/rtems/dpmem.inl
@@ -26,7 +26,8 @@
*/
/**
- * @brief Dual_ported_memory_Allocate
+ * @brief Allocates a port control block from the inactive chain
+ * of free port control blocks.
*
* This routine allocates a port control block from the inactive chain
* of free port control blocks.
@@ -39,7 +40,8 @@ RTEMS_INLINE_ROUTINE Dual_ported_memory_Control
}
/**
- * @brief Dual_ported_memory_Free
+ * @brief Frees a port control block to the inactive chain
+ * of free port control blocks.
*
* This routine frees a port control block to the inactive chain
* of free port control blocks.
@@ -52,7 +54,7 @@ RTEMS_INLINE_ROUTINE void _Dual_ported_memory_Free (
}
/**
- * @brief Dual_ported_memory_Get
+ * @brief Maps port IDs to port control blocks.
*
* This function maps port IDs to port control blocks. If ID
* corresponds to a local port, then it returns the_port control
@@ -71,7 +73,7 @@ RTEMS_INLINE_ROUTINE Dual_ported_memory_Control *_Dual_ported_memory_Get (
}
/**
- * @brief Dual_ported_memory_Is_null
+ * @brief Checks if the_port is NULL.
*
* This function returns true if the_port is NULL and false otherwise.
*/
diff --git a/cpukit/rtems/inline/rtems/rtems/eventset.inl b/cpukit/rtems/inline/rtems/rtems/eventset.inl
index 22919ea..ee9447c 100644
--- a/cpukit/rtems/inline/rtems/rtems/eventset.inl
+++ b/cpukit/rtems/inline/rtems/rtems/eventset.inl
@@ -27,7 +27,7 @@
*/
/**
- * @brief Event_sets_Is_empty
+ * @brief Checks if on events are posted in the event_set.
*
* This function returns TRUE if on events are posted in the event_set,
* and FALSE otherwise.
@@ -40,7 +40,7 @@ RTEMS_INLINE_ROUTINE bool _Event_sets_Is_empty(
}
/**
- * @brief Event_sets_Post
+ * @brief Posts the given new_events into the event_set passed in.
*
* This routine posts the given new_events into the event_set
* passed in. The result is returned to the user in event_set.
@@ -54,7 +54,7 @@ RTEMS_INLINE_ROUTINE void _Event_sets_Post(
}
/**
- * @brief Event_sets_Get
+ * @brief Returns the events in event_condition that are set in event_set.
*
* This function returns the events in event_condition which are
* set in event_set.
@@ -68,7 +68,7 @@ RTEMS_INLINE_ROUTINE rtems_event_set _Event_sets_Get(
}
/**
- * @brief Event_sets_Clear
+ * @brief Removes the events in mask from the event_set passed in.
*
* This function removes the events in mask from the event_set
* passed in. The result is returned to the user in event_set.
diff --git a/cpukit/rtems/inline/rtems/rtems/message.inl b/cpukit/rtems/inline/rtems/rtems/message.inl
index 06a596e..16c15c7 100644
--- a/cpukit/rtems/inline/rtems/rtems/message.inl
+++ b/cpukit/rtems/inline/rtems/rtems/message.inl
@@ -28,7 +28,7 @@
*/
/**
- * @brief Message_queue_Is_null
+ * @brief Check whether message queue is null.
*
* This function places the_message at the rear of the outstanding
* messages on the_message_queue.
@@ -42,7 +42,8 @@ RTEMS_INLINE_ROUTINE bool _Message_queue_Is_null (
/**
- * @brief Message_queue_Free
+ * @brief Deallocates a message queue control block into
+ * the inactive chain of free message queue control blocks.
*
* This routine deallocates a message queue control block into
* the inactive chain of free message queue control blocks.
@@ -55,7 +56,7 @@ RTEMS_INLINE_ROUTINE void _Message_queue_Free (
}
/**
- * @brief Message_queue_Get
+ * @brief Maps message queue IDs to message queue control blocks.
*
* This function maps message queue IDs to message queue control
* blocks. If ID corresponds to a local message queue, then it
diff --git a/cpukit/rtems/inline/rtems/rtems/modes.inl b/cpukit/rtems/inline/rtems/rtems/modes.inl
index d1ad842..0340321 100644
--- a/cpukit/rtems/inline/rtems/rtems/modes.inl
+++ b/cpukit/rtems/inline/rtems/rtems/modes.inl
@@ -26,7 +26,7 @@
*/
/**
- * @brief Modes_Mask_changed
+ * @brief Checks if any of the mode flags in mask are set in mode_set.
*
* This function returns TRUE if any of the mode flags in mask
* are set in mode_set, and FALSE otherwise.
@@ -40,7 +40,7 @@ RTEMS_INLINE_ROUTINE bool _Modes_Mask_changed (
}
/**
- * @brief Modes_Is_asr_disabled
+ * @brief Checks if mode_set says that Asynchronous Signal Processing is disabled.
*
* This function returns TRUE if mode_set indicates that Asynchronous
* Signal Processing is disabled, and FALSE otherwise.
@@ -53,7 +53,7 @@ RTEMS_INLINE_ROUTINE bool _Modes_Is_asr_disabled (
}
/**
- * @brief Modes_Is_preempt
+ * @brief Checks if mode_set indicates that preemption is enabled.
*
* This function returns TRUE if mode_set indicates that preemption
* is enabled, and FALSE otherwise.
@@ -66,7 +66,7 @@ RTEMS_INLINE_ROUTINE bool _Modes_Is_preempt (
}
/**
- * @brief Modes_Is_timeslice
+ * @brief Checks if mode_set indicates that timeslicing is enabled.
*
* This function returns TRUE if mode_set indicates that timeslicing
* is enabled, and FALSE otherwise.
@@ -79,7 +79,7 @@ RTEMS_INLINE_ROUTINE bool _Modes_Is_timeslice (
}
/**
- * @brief Modes_Get_interrupt_level
+ * @brief Gets the interrupt level portion of the mode_set.
*
* This function returns the interrupt level portion of the mode_set.
*/
@@ -91,7 +91,7 @@ RTEMS_INLINE_ROUTINE ISR_Level _Modes_Get_interrupt_level (
}
/**
- * @brief Modes_Set_interrupt_level
+ * @brief Sets the current interrupt level to that specified in the mode_set.
*
* This routine sets the current interrupt level to that specified
* in the mode_set.
@@ -104,7 +104,8 @@ RTEMS_INLINE_ROUTINE void _Modes_Set_interrupt_level (
}
/**
- * @brief Modes_Change
+ * @brief Changes the modes in old_mode_set indicated by
+ * mask to the requested values in new_mode_set.
*
* This routine changes the modes in old_mode_set indicated by
* mask to the requested values in new_mode_set. The resulting
diff --git a/cpukit/rtems/inline/rtems/rtems/options.inl b/cpukit/rtems/inline/rtems/rtems/options.inl
index 4341b14..c3c0a5b 100644
--- a/cpukit/rtems/inline/rtems/rtems/options.inl
+++ b/cpukit/rtems/inline/rtems/rtems/options.inl
@@ -28,7 +28,7 @@
*/
/**
- * @brief Options_Is_no_wait
+ * @brief Checks if the RTEMS_NO_WAIT option is enabled in option_set.
*
* This function returns TRUE if the RTEMS_NO_WAIT option is enabled in
* option_set, and FALSE otherwise.
@@ -41,7 +41,7 @@ RTEMS_INLINE_ROUTINE bool _Options_Is_no_wait (
}
/**
- * @brief Options_Is_any
+ * @brief Checks if the RTEMS_EVENT_ANY option is enabled in OPTION_SET.
*
* This function returns TRUE if the RTEMS_EVENT_ANY option is enabled in
* OPTION_SET, and FALSE otherwise.
diff --git a/cpukit/rtems/inline/rtems/rtems/part.inl b/cpukit/rtems/inline/rtems/rtems/part.inl
index 6f921a9..355ed49 100644
--- a/cpukit/rtems/inline/rtems/rtems/part.inl
+++ b/cpukit/rtems/inline/rtems/rtems/part.inl
@@ -26,7 +26,7 @@
*/
/**
- * @brief Partition_Allocate_buffer
+ * @brief Allocate a buffer from the_partition.
*
* This function attempts to allocate a buffer from the_partition.
* If successful, it returns the address of the allocated buffer.
@@ -40,7 +40,7 @@ RTEMS_INLINE_ROUTINE void *_Partition_Allocate_buffer (
}
/**
- * @brief Partition_Free_buffer
+ * @brief Frees the_buffer to the_partition.
*
* This routine frees the_buffer to the_partition.
*/
@@ -53,7 +53,7 @@ RTEMS_INLINE_ROUTINE void _Partition_Free_buffer (
}
/**
- * @brief Partition_Is_buffer_on_boundary
+ * @brief Checks whether is on a valid buffer boundary for the_partition.
*
* This function returns TRUE if the_buffer is on a valid buffer
* boundary for the_partition, and FALSE otherwise.
@@ -74,7 +74,7 @@ RTEMS_INLINE_ROUTINE bool _Partition_Is_buffer_on_boundary (
}
/**
- * @brief Partition_Is_buffer_valid
+ * @brief Checks whether the_buffer is a valid buffer from the_partition.
*
* This function returns TRUE if the_buffer is a valid buffer from
* the_partition, otherwise FALSE is returned.
@@ -97,7 +97,7 @@ RTEMS_INLINE_ROUTINE bool _Partition_Is_buffer_valid (
}
/**
- * @brief Partition_Is_buffer_size_aligned
+ * @brief Checks if partition is buffer size aligned.
*
* This function returns TRUE if the use of the specified buffer_size
* will result in the allocation of buffers whose first byte is
@@ -111,7 +111,8 @@ RTEMS_INLINE_ROUTINE bool _Partition_Is_buffer_size_aligned (
}
/**
- * @brief Partition_Allocate
+ * @brief Allocates a partition control block from the
+ * inactive chain of free partition control blocks.
*
* This function allocates a partition control block from
* the inactive chain of free partition control blocks.
@@ -122,7 +123,8 @@ RTEMS_INLINE_ROUTINE Partition_Control *_Partition_Allocate ( void )
}
/**
- * @brief Partition_Free
+ * @brief Frees a partition control block to the
+ * inactive chain of free partition control blocks.
*
* This routine frees a partition control block to the
* inactive chain of free partition control blocks.
@@ -135,7 +137,7 @@ RTEMS_INLINE_ROUTINE void _Partition_Free (
}
/**
- * @brief Partition_Get
+ * @brief Maps partition IDs to partition control blocks.
*
* This function maps partition IDs to partition control blocks.
* If ID corresponds to a local partition, then it returns
@@ -155,7 +157,7 @@ RTEMS_INLINE_ROUTINE Partition_Control *_Partition_Get (
}
/**
- * @brief Partition_Is_null
+ * @brief Checks if the_partition is NULL.
*
* This function returns TRUE if the_partition is NULL
* and FALSE otherwise.
diff --git a/cpukit/rtems/inline/rtems/rtems/ratemon.inl b/cpukit/rtems/inline/rtems/rtems/ratemon.inl
index 6c40998..30b0361 100644
--- a/cpukit/rtems/inline/rtems/rtems/ratemon.inl
+++ b/cpukit/rtems/inline/rtems/rtems/ratemon.inl
@@ -26,7 +26,8 @@
*/
/**
- * @brief Rate_monotonic_Allocate
+ * @brief Allocates a period control block from
+ * the inactive chain of free period control blocks.
*
* This function allocates a period control block from
* the inactive chain of free period control blocks.
@@ -38,7 +39,8 @@ RTEMS_INLINE_ROUTINE Rate_monotonic_Control *_Rate_monotonic_Allocate( void )
}
/**
- * @brief Rate_monotonic_Free
+ * @brief Allocates a period control block from
+ * the inactive chain of free period control blocks.
*
* This routine allocates a period control block from
* the inactive chain of free period control blocks.
@@ -51,7 +53,7 @@ RTEMS_INLINE_ROUTINE void _Rate_monotonic_Free (
}
/**
- * @brief Rate_monotonic_Get
+ * @brief Maps period IDs to period control blocks.
*
* This function maps period IDs to period control blocks.
* If ID corresponds to a local period, then it returns
@@ -69,7 +71,7 @@ RTEMS_INLINE_ROUTINE Rate_monotonic_Control *_Rate_monotonic_Get (
}
/**
- * @brief Rate_monotonic_Is_active
+ * @brief Checks if the_period is in the ACTIVE state.
*
* This function returns TRUE if the_period is in the ACTIVE state,
* and FALSE otherwise.
@@ -82,7 +84,7 @@ RTEMS_INLINE_ROUTINE bool _Rate_monotonic_Is_active (
}
/**
- * @brief Rate_monotonic_Is_inactive
+ * @brief Checks if the_period is in the ACTIVE state.
*
* This function returns TRUE if the_period is in the ACTIVE state,
* and FALSE otherwise.
@@ -95,7 +97,7 @@ RTEMS_INLINE_ROUTINE bool _Rate_monotonic_Is_inactive (
}
/**
- * @brief Rate_monotonic_Is_expired
+ * @brief Checks if the_period is in the EXPIRED state.
*
* This function returns TRUE if the_period is in the EXPIRED state,
* and FALSE otherwise.
@@ -108,7 +110,7 @@ RTEMS_INLINE_ROUTINE bool _Rate_monotonic_Is_expired (
}
/**
- * @brief Rate_monotonic_Is_null
+ * @brief Checks if the_period is NULL.
*
* This function returns TRUE if the_period is NULL and FALSE otherwise.
*/
diff --git a/cpukit/rtems/inline/rtems/rtems/sem.inl b/cpukit/rtems/inline/rtems/rtems/sem.inl
index 7b6d0d9..22699e6 100644
--- a/cpukit/rtems/inline/rtems/rtems/sem.inl
+++ b/cpukit/rtems/inline/rtems/rtems/sem.inl
@@ -26,7 +26,8 @@
*/
/**
- * @brief Semaphore_Allocate
+ * @brief Allocates a semaphore control block from
+ * the inactive chain of free semaphore control blocks.
*
* This function allocates a semaphore control block from
* the inactive chain of free semaphore control blocks.
@@ -37,7 +38,8 @@ RTEMS_INLINE_ROUTINE Semaphore_Control *_Semaphore_Allocate( void )
}
/**
- * @brief Semaphore_Free
+ * @brief Frees a semaphore control block to the
+ * inactive chain of free semaphore control blocks.
*
* This routine frees a semaphore control block to the
* inactive chain of free semaphore control blocks.
@@ -50,7 +52,7 @@ RTEMS_INLINE_ROUTINE void _Semaphore_Free (
}
/**
- * @brief Semaphore_Get
+ * @brief Maps semaphore IDs to semaphore control blocks.
*
* This function maps semaphore IDs to semaphore control blocks.
* If ID corresponds to a local semaphore, then it returns
@@ -70,7 +72,7 @@ RTEMS_INLINE_ROUTINE Semaphore_Control *_Semaphore_Get (
}
/**
- * @brief Semaphore_Get (Interrupts disabled)
+ * @brief Maps semaphore IDs to semaphore control blocks.
*
* This function maps semaphore IDs to semaphore control blocks.
* If ID corresponds to a local semaphore, then it returns
@@ -91,7 +93,7 @@ RTEMS_INLINE_ROUTINE Semaphore_Control *_Semaphore_Get_interrupt_disable (
}
/**
- * @brief Semaphore_Is_null
+ * @brief Checks if the_semaphore is NULL.
*
* This function returns TRUE if the_semaphore is NULL and FALSE otherwise.
*/
diff --git a/cpukit/rtems/inline/rtems/rtems/status.inl b/cpukit/rtems/inline/rtems/rtems/status.inl
index 1ad22fd..caeb03d 100644
--- a/cpukit/rtems/inline/rtems/rtems/status.inl
+++ b/cpukit/rtems/inline/rtems/rtems/status.inl
@@ -28,7 +28,7 @@
*/
/**
- * @brief rtems_is_status_successful
+ * @brief Checks if the status code is equal to RTEMS_SUCCESSFUL.
*
* This function returns TRUE if the status code is equal to RTEMS_SUCCESSFUL,
* and FALSE otherwise.
@@ -41,7 +41,7 @@ RTEMS_INLINE_ROUTINE bool rtems_is_status_successful(
}
/**
- * @brief rtems_are_statuses_equal
+ * @brief Checks if the status code1 is equal to code2.
*
* This function returns TRUE if the status code1 is equal to code2,
* and FALSE otherwise.
diff --git a/cpukit/rtems/inline/rtems/rtems/tasks.inl b/cpukit/rtems/inline/rtems/rtems/tasks.inl
index 193b0ad..3bf8212 100644
--- a/cpukit/rtems/inline/rtems/rtems/tasks.inl
+++ b/cpukit/rtems/inline/rtems/rtems/tasks.inl
@@ -26,7 +26,7 @@
*/
/**
- * @brief RTEMS_tasks_Allocate
+ * @brief Allocates a task control block.
*
* This function allocates a task control block from
* the inactive chain of free task control blocks.
@@ -37,7 +37,7 @@ RTEMS_INLINE_ROUTINE Thread_Control *_RTEMS_tasks_Allocate( void )
}
/**
- * @brief RTEMS_tasks_Free
+ * @brief Frees a task control block.
*
* This routine frees a task control block to the
* inactive chain of free task control blocks.
@@ -46,14 +46,14 @@ RTEMS_INLINE_ROUTINE void _RTEMS_tasks_Free (
Thread_Control *the_task
)
{
- _Objects_Free(
+ _Objects_Free(
_Objects_Get_information_id( the_task->Object.id ),
&the_task->Object
);
}
/**
- * @brief RTEMS_tasks_Priority_to_Core
+ * @brief Converts an RTEMS API priority into a core priority.
*
* This function converts an RTEMS API priority into a core priority.
*/
@@ -65,7 +65,7 @@ RTEMS_INLINE_ROUTINE Priority_Control _RTEMS_tasks_Priority_to_Core(
}
/**
- * @brief RTEMS_tasks_Priority_is_valid
+ * @brief Checks whether the priority is a valid user task.
*
* This function returns TRUE if the_priority is a valid user task priority
* and FALSE otherwise.
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