From: Willy Tarreau <w@1wt.eu>
Date: Sat, 21 Mar 2009 12:26:05 +0000 (+0100)
Subject: [MINOR] sched: permit a task to stay up between calls
X-Git-Tag: v1.3.16~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=135a113e369ad0afc58f326f4811858f8bf770e5;p=thirdparty%2Fhaproxy.git

[MINOR] sched: permit a task to stay up between calls

If a task wants to stay in the run queue, it is possible. It just
needs to wake itself up. We just want to ensure that a reniced
task will be processed at the right instant.
---

diff --git a/src/task.c b/src/task.c
index 17d825e595..72e3a93e5c 100644
--- a/src/task.c
+++ b/src/task.c
@@ -225,6 +225,13 @@ void process_runnable_tasks(int *next)
 				task_queue(t);
 				expire = tick_first_2nz(expire, t->expire);
 			}
+
+			/* if the task has put itself back into the run queue, we want to ensure
+			 * it will be served at the proper time, especially if it's reniced.
+			 */
+			if (unlikely(task_in_rq(t)) && (!eb || tick_is_lt(t->rq.key, eb->key))) {
+				eb = eb32_lookup_ge(&rqueue, rqueue_ticks - TIMER_LOOK_BACK);
+			}
 		}
 	}
 	*next = expire;