Allow work units smaller than a block to improve load balancing

[ghc-hetmet.git] / includes / Block.h

diff --git a/includes/Block.h b/includes/Block.h
index 112092c..e2e691a 100644 (file)
--- a/includes/Block.h
+++ b/includes/Block.h
@@ -54,6 +54,7 @@ typedef struct bdescr_ {
   union { 
       struct bdescr_ *back;    /* used (occasionally) for doubly-linked lists*/
       StgWord *bitmap;
+      StgPtr  scan;             /* scan pointer for copying GC */
   } u;
   unsigned int gen_no;         /* generation */
   struct step_ *step;          /* step */