[Xenomai-git] Philippe Gerum : copperplate: introduce threadobj_set_schedprio()

[git repository hosting]

Module: xenomai-forge
Branch: next
Commit: 5951586bbdbc01bff4103ec820827e44ccdb0e56
URL:    
http://git.xenomai.org/?p=xenomai-forge.git;a=commit;h=5951586bbdbc01bff4103ec820827e44ccdb0e56

Author: Philippe Gerum <r...@xenomai.org>
Date:   Wed May 21 17:23:10 2014 +0200

copperplate: introduce threadobj_set_schedprio()

This is a service for solely updating the static priority of a thread
while keeping its current scheduling class unchanged.

---

 include/copperplate/threadobj.h |    2 ++
 lib/copperplate/threadobj.c     |   17 +++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/include/copperplate/threadobj.h b/include/copperplate/threadobj.h
index 58a4f3e..44d1047 100644
--- a/include/copperplate/threadobj.h
+++ b/include/copperplate/threadobj.h
@@ -326,6 +326,8 @@ int threadobj_unlock_sched(void);
 int threadobj_set_schedparam(struct threadobj *thobj, int policy,
                             const struct sched_param_ex *param_ex);
 
+int threadobj_set_schedprio(struct threadobj *thobj, int priority);
+
 int threadobj_set_mode(int clrmask, int setmask, int *mode_r);
 
 int threadobj_set_periodic(struct threadobj *thobj,
diff --git a/lib/copperplate/threadobj.c b/lib/copperplate/threadobj.c
index 49f73f8..ab1334e 100644
--- a/lib/copperplate/threadobj.c
+++ b/lib/copperplate/threadobj.c
@@ -1514,6 +1514,23 @@ int threadobj_set_schedparam(struct threadobj *thobj, 
int policy,
        return __bt(ret);
 }
 
+int threadobj_set_schedprio(struct threadobj *thobj, int priority)
+{                              /* thobj->lock held */
+       struct sched_param_ex param_ex;
+       int policy;
+
+       __threadobj_check_locked(thobj);
+
+       param_ex = thobj->schedparam;
+       param_ex.sched_priority = priority;
+       policy = thobj->policy;
+
+       if (policy == SCHED_RR)
+               param_ex.sched_rr_quantum = thobj->tslice;
+
+       return __bt(threadobj_set_schedparam(thobj, policy, &param_ex));
+}
+
 static inline int main_overlay(void)
 {
        struct threadobj_init_data idata;


_______________________________________________
Xenomai-git mailing list
Xenomai-git@xenomai.org
http://www.xenomai.org/mailman/listinfo/xenomai-git