[project @ 2004-08-13 13:04:50 by simonmar]

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

diff --git a/ghc/includes/StgLdvProf.h b/ghc/includes/StgLdvProf.h
index dceefd7..f5f7ae2 100644 (file)
--- a/ghc/includes/StgLdvProf.h
+++ b/ghc/includes/StgLdvProf.h
@@ -1,8 +1,6 @@
 /* -----------------------------------------------------------------------------
- * $Id: StgLdvProf.h,v 1.2 2001/11/26 16:54:22 simonmar Exp $
  *
- * (c) The GHC Team, 2001
- * Author: Sungwoo Park
+ * (c) The University of Glasgow, 2004
  *
  * Lag/Drag/Void profiling.
  *
@@ -11,63 +9,37 @@
 #ifndef STGLDVPROF_H
 #define STGLDVPROF_H
 
-/*
-  An LDV word is divided into 3 parts: state bits (LDV_STATE_MASK), creation 
-  time bits (LDV_CREATE_MASK), and last use time bits (LDV_LAST_MASK). 
- */
-#if SIZEOF_VOID_P == 8
-#define LDV_SHIFT               30
-#define LDV_STATE_MASK          0x1000000000000000
-#define LDV_CREATE_MASK         0x0FFFFFFFC0000000
-#define LDV_LAST_MASK           0x000000003FFFFFFF
-#define LDV_STATE_CREATE        0x0000000000000000
-#define LDV_STATE_USE           0x1000000000000000
-#else
-#define LDV_SHIFT               15
-#define LDV_STATE_MASK          0x40000000 
-#define LDV_CREATE_MASK         0x3FFF8000
-#define LDV_LAST_MASK           0x00007FFF
-#define LDV_STATE_CREATE        0x00000000
-#define LDV_STATE_USE           0x40000000
-#endif  // SIZEOF_VOID_P
-
 #ifdef PROFILING
 
-extern nat era;
-
-// retrieves the LDV word from closure c
+/* retrieves the LDV word from closure c */
 #define LDVW(c)                 (((StgClosure *)(c))->header.prof.hp.ldvw)
 
-// Stores the creation time for closure c. 
-// This macro is called at the very moment of closure creation.
-//
-// NOTE: this initializes LDVW(c) to zero, which ensures that there
-// is no conflict between retainer profiling and LDV profiling,
-// because retainer profiling also expects LDVW(c) to be initialised
-// to zero.
-#define LDV_recordCreate(c)   \
-  LDVW((c)) = (era << LDV_SHIFT) | LDV_STATE_CREATE
-
-// Stores the last use time for closure c.
-// This macro *must* be called whenever a closure is used, that is, it is 
-// entered.
-#define LDV_recordUse(c)                               \
-  {                                                    \
-    if (era > 0)                                       \
-      LDVW((c)) = (LDVW((c)) & LDV_CREATE_MASK) |      \
-                  era |                                        \
-                  LDV_STATE_USE;                       \
-  }
-
-// Macros called when a closure is entered. 
-// The closure is not an 'inherently used' one.
-// The closure is not IND or IND_OLDGEN because neither is considered for LDV
-// profiling.
-#define LDV_ENTER(c)            LDV_recordUse((c))
+/*
+ * Stores the creation time for closure c. 
+ * This macro is called at the very moment of closure creation.
+ *
+ * NOTE: this initializes LDVW(c) to zero, which ensures that there
+ * is no conflict between retainer profiling and LDV profiling,
+ * because retainer profiling also expects LDVW(c) to be initialised
+ * to zero.
+ */
+#ifndef CMINUSMINUS
+#define LDV_RECORD_CREATE(c)   \
+  LDVW((c)) = (RTS_DEREF(era) << LDV_SHIFT) | LDV_STATE_CREATE
+#endif
+
+#ifdef CMINUSMINUS
+#define LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(c) \
+  foreign "C" LDV_recordDead_FILL_SLOP_DYNAMIC(c "ptr")
+#else
+#define LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(c) \
+  LDV_recordDead_FILL_SLOP_DYNAMIC(c)
+#endif
 
-#else  // !PROFILING
+#else  /* !PROFILING */
 
-#define LDV_ENTER(c)            
+#define LDV_RECORD_CREATE(c)   /* nothing */
+#define LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(c)  /* nothing */
 
-#endif // PROFILING
-#endif // STGLDVPROF_H
+#endif /* PROFILING */
+#endif /* STGLDVPROF_H */