From 7544e7ca1164355eb3ae893058807c28b71bdb8a Mon Sep 17 00:00:00 2001
From: Matthieu Schaller <matthieu.schaller@durham.ac.uk>
Date: Wed, 26 Apr 2017 22:41:55 +0100
Subject: [PATCH] Make sure the self tasks get a drift even when we don't need
to split them at the top level.
---
src/scheduler.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/scheduler.c b/src/scheduler.c
index d97fd65fe4..cd7c61525f 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -173,6 +173,13 @@ static void scheduler_splittask(struct task *t, struct scheduler *s) {
/* convert to a self-subtask. */
t->type = task_type_sub_self;
+ /* Make sure we have a drift task */
+ lock_lock(&ci->lock);
+ if (ci->drift == NULL)
+ ci->drift = scheduler_addtask(s, task_type_drift, task_subtype_none,
+ 0, 0, ci, NULL, 0);
+ lock_unlock_blind(&ci->lock);
+
/* Depend on local sorts on this cell. */
if (ci->sorts != NULL) scheduler_addunlock(s, ci->sorts, t);
--
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