From: Simon Marlow <marlowsd@gmail.com>
Date: Wed, 5 Nov 2008 15:49:28 +0000 (+0000)
Subject: don't yield the Capability if blackholes_need_checking
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=904addb860eab8d1d46cea0994b67485be1c8890;p=ghc-hetmet.git

don't yield the Capability if blackholes_need_checking
---

diff --git a/rts/Schedule.c b/rts/Schedule.c
index 569c3d0..ca6e426 100644
--- a/rts/Schedule.c
+++ b/rts/Schedule.c
@@ -714,7 +714,8 @@ scheduleYield (Capability **pcap, Task *task)
     Capability *cap = *pcap;
 
     // if we have work, and we don't need to give up the Capability, continue.
-    if (!emptyRunQueue(cap) && !shouldYieldCapability(cap,task))
+    if (!shouldYieldCapability(cap,task) && 
+        (!emptyRunQueue(cap) || blackholes_need_checking))
         return;
 
     // otherwise yield (sleep), and keep yielding if necessary.