Module: xenomai-forge
Branch: next
Commit: 7e59ed2b12308f3adffaaf0f46e69f986fad474e
URL:
http://git.xenomai.org/?p=xenomai-forge.git;a=commit;h=7e59ed2b12308f3adffaaf0f46e69f986fad474e
Author: Philippe Gerum <r...@xenomai.org>
Date: Fri Sep 6 13:18:05 2013 +0200
cobalt/posix/thread: allow extensions to overload sched_yield()
---
kernel/cobalt/posix/extension.h | 1 +
kernel/cobalt/posix/thread.c | 5 +++++
2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/kernel/cobalt/posix/extension.h b/kernel/cobalt/posix/extension.h
index e73c46f..5c39c01 100644
--- a/kernel/cobalt/posix/extension.h
+++ b/kernel/cobalt/posix/extension.h
@@ -52,6 +52,7 @@ struct cobalt_extension {
struct siginfo __user *u_si,
const struct siginfo *si,
int overrun);
+ int (*sched_yield)(struct cobalt_extref *curref);
} ops;
};
diff --git a/kernel/cobalt/posix/thread.c b/kernel/cobalt/posix/thread.c
index 68d15f1..92612b7 100644
--- a/kernel/cobalt/posix/thread.c
+++ b/kernel/cobalt/posix/thread.c
@@ -1222,6 +1222,11 @@ int cobalt_sched_max_prio(int policy)
int cobalt_sched_yield(void)
{
struct cobalt_thread *curr = cobalt_current_thread();
+ int ret;
+
+ /* Maybe some extension wants to handle this. */
+ if (cobalt_call_extension(sched_yield, &curr->extref, ret) && ret)
+ return ret > 0 ? 0 : ret;
xnthread_resume(&curr->threadbase, 0);
if (xnsched_run())
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