[PATCH] libgomp: Add comment to clarify last_team usage

[Sebastian Huber]

libgomp/ChangeLog
2015-07-03  Sebastian Huber  <sebastian.huber@embedded-brains.de>

	* libgomp.h (gomp_thread_pool): Comment last_team field.
---
 libgomp/libgomp.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libgomp/libgomp.h b/libgomp/libgomp.h
index 5272f01..5ed0f78 100644
--- a/libgomp/libgomp.h
+++ b/libgomp/libgomp.h
@@ -458,6 +458,9 @@ struct gomp_thread_pool
   struct gomp_thread **threads;
   unsigned threads_size;
   unsigned threads_used;
+  /* The last team is used for non-nested teams to delay their destruction to
+     make sure all the threads in the team move on to the pool's barrier before
+     the team's barrier is destroyed.  */
   struct gomp_team *last_team;
   /* Number of threads running in this contention group.  */
   unsigned long threads_busy;
-- 
1.8.4.5