Run sparks in batches, instead of creating a new thread for each one

Signficantly reduces the overhead for par, which means that we can
make use of paralellism at a much finer granularity.

1 files changed, 2 insertions, 2 deletions

diff --git a/rts/Sparks.h b/rts/Sparks.h
index 0d116bdbe4..96968890ba 100644
--- a/rts/Sparks.h
+++ b/rts/Sparks.h
@@ -73,9 +73,9 @@ StgClosure* reclaimSpark(SparkPool *pool);
 // if the pool is almost empty).
 rtsBool looksEmpty(SparkPool* deque);
 
-StgClosure * tryStealSpark     (SparkPool *pool);
+StgClosure * tryStealSpark     (Capability *cap);
 void         freeSparkPool     (SparkPool *pool);
-void         createSparkThread (Capability *cap, StgClosure *p);
+void         createSparkThread (Capability *cap);
 void         traverseSparkQueue(evac_fn evac, void *user, Capability *cap);
 void         pruneSparkQueue   (evac_fn evac, void *user, Capability *cap);