Refactoring of the GC in preparation for parallel GC

[ghc-hetmet.git] / rts / sm / GCUtils.h

diff --git a/rts/sm/GCUtils.h b/rts/sm/GCUtils.h
index 70dd7a8..2b22407 100644 (file)
--- a/rts/sm/GCUtils.h
+++ b/rts/sm/GCUtils.h
@@ -11,5 +11,29 @@
  *
  * --------------------------------------------------------------------------*/
 
-bdescr *gc_alloc_block(step *stp);
-bdescr *gc_alloc_scavd_block(step *stp);
+#include "SMP.h"
+
+#ifdef THREADED_RTS
+extern SpinLock gc_alloc_block_sync;
+#endif
+
+bdescr *allocBlock_sync(void);
+
+void    push_scan_block      (bdescr *bd, step_workspace *ws);
+bdescr *grab_todo_block      (step_workspace *ws);
+bdescr *gc_alloc_todo_block  (step_workspace *ws);
+bdescr *gc_alloc_scavd_block (step_workspace *ws);
+
+// Returns true if a block is 3/4 full.  This predicate is used to try
+// to re-use partial blocks wherever possible, and to reduce wastage.
+// We might need to tweak the actual value.
+INLINE_HEADER rtsBool
+isPartiallyFull(bdescr *bd)
+{
+    return (bd->free + BLOCK_SIZE_W/4 < bd->start + BLOCK_SIZE_W);
+}
+
+
+#if DEBUG
+void printMutableList (generation *gen);
+#endif