[project @ 2001-11-26 16:54:21 by simonmar]

[ghc-hetmet.git] / ghc / rts / RetainerProfile.h

diff --git a/ghc/rts/RetainerProfile.h b/ghc/rts/RetainerProfile.h
index 7a2f0fb..51ddc64 100644 (file)
--- a/ghc/rts/RetainerProfile.h
+++ b/ghc/rts/RetainerProfile.h
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: RetainerProfile.h,v 1.1 2001/11/22 14:25:12 simonmar Exp $
+ * $Id: RetainerProfile.h,v 1.2 2001/11/26 16:54:21 simonmar Exp $
  *
  * (c) The GHC Team, 2001
  * Author: Sungwoo Park
@@ -13,12 +13,31 @@
 
 #ifdef PROFILING
 
+#include "RetainerSet.h"
+
 extern void  initRetainerProfiling ( void );
 extern void  endRetainerProfiling  ( void );
 extern void  printRetainer         ( FILE *, retainer );
 extern void  retainerProfile       ( void );
 extern void  resetStaticObjectForRetainerProfiling ( void );
 
+extern StgWord flip;
+
+// extract the retainer set field from c
+#define RSET(c)   ((c)->header.prof.hp.rs)
+
+#define isRetainerSetFieldValid(c) \
+  ((((StgWord)(c)->header.prof.hp.rs & 1) ^ flip) == 0)
+
+static inline RetainerSet *
+retainerSetOf( StgClosure *c )
+{
+    ASSERT( isRetainerSetFieldValid(c) );
+    // StgWord has the same size as pointers, so the following type
+    // casting is okay.
+    return (RetainerSet *)((StgWord)RSET(c) ^ flip);
+}
+
 // firstStack is exported because memInventory() in Schedule.c uses it.
 #ifdef DEBUG
 extern bdescr *firstStack;