diff mbox

[API-NEXT,PATCHv14,01/13] api: schedule: additional scheduler group functions

Message ID 1439139273-22438-2-git-send-email-bill.fischofer@linaro.org
State New
Headers show

Commit Message

Bill Fischofer Aug. 9, 2015, 4:54 p.m. UTC
Additional APIs for scheduler groups:
odp_schedule_group_lookup()
odp_schedule_group_join()
odp_schedule_group_leave()
odp_schedule_group_count()

Signed-off-by: Bill Fischofer <bill.fischofer@linaro.org>
---
 include/odp/api/schedule.h | 63 +++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 59 insertions(+), 4 deletions(-)
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Patch

diff --git a/include/odp/api/schedule.h b/include/odp/api/schedule.h
index 36e52cd..bd858b3 100644
--- a/include/odp/api/schedule.h
+++ b/include/odp/api/schedule.h
@@ -187,12 +187,12 @@  int odp_schedule_num_prio(void);
 /**
  * Schedule group create
  *
- * Creates a schedule group with the thread mask. Only threads in the
+ * Create a schedule group with the specified thread mask. Only threads in the
  * mask will receive events from a queue that belongs to the schedule group.
  * Thread masks of various schedule groups may overlap. There are predefined
  * groups such as ODP_SCHED_GROUP_ALL and ODP_SCHED_GROUP_WORKER, which are
- * always present and automatically updated. Group name is optional
- * (may be NULL) and can have ODP_SCHED_GROUP_NAME_LEN characters in maximum.
+ * always present and automatically updated. Group name is optional (may be
+ * NULL) and can contain a maximum of ODP_SCHED_GROUP_NAME_LEN characters.
  *
  * @param name    Schedule group name
  * @param mask    Thread mask
@@ -208,7 +208,7 @@  odp_schedule_group_t odp_schedule_group_create(const char *name,
 /**
  * Schedule group destroy
  *
- * Destroys a schedule group. All queues belonging to the schedule group must
+ * Destroy a schedule group. All queues belonging to the schedule group must
  * be destroyed before destroying the group. Other operations on this group
  * must not be invoked in parallel.
  *
@@ -220,6 +220,61 @@  odp_schedule_group_t odp_schedule_group_create(const char *name,
 int odp_schedule_group_destroy(odp_schedule_group_t group);
 
 /**
+ * Look up a schedule group by name
+ *
+ * Return the handle of a schedule group from its name
+ *
+ * @param name   Name of schedule group
+ *
+ * @return Handle of schedule group for specified name
+ * @retval ODP_SCHEDULE_GROUP_INVALID No matching schedule group found
+ */
+odp_schedule_group_t odp_schedule_group_lookup(const char *name);
+
+/**
+ * Join a schedule group
+ *
+ * Join a threadmask to an existing schedule group
+ *
+ * @param group  Schdule group handle
+ * @param mask   Thread mask
+ *
+ * @retval 0 on success
+ * @retval <0 on failure
+ */
+int odp_schedule_group_join(odp_schedule_group_t group,
+			    const odp_thrmask_t *mask);
+
+/**
+ * Leave a schedule group
+ *
+ * Remove a threadmask from an existing schedule group
+ *
+ * @param group  Schedule group handle
+ * @param mask   Thread mask
+ *
+ * @retval 0 on success
+ * @retval <0 on failure
+ *
+ * @note Leaving a schedule group means threads in the specified mask will no
+ * longer receive events from queues belonging to the specified schedule
+ * group. This effect is not instantaneous, however, and events that have been
+ * prestaged may still be presented to the masked threads.
+ */
+int odp_schedule_group_leave(odp_schedule_group_t group,
+			     const odp_thrmask_t *mask);
+
+/**
+ * Count members in a schedule group
+ *
+ * @param group  Schedule group handle
+ *
+ * @return Count of threads currently members of this schedule group.
+ * @retval <0 Invalid group specified
+ */
+int odp_schedule_group_count(odp_schedule_group_t group);
+
+/**
  * Initialize ordered context lock
  *
  * Initialize an ordered queue context lock. The lock can be associated only