includes/rts/prof/LDV.h

   1 /* -----------------------------------------------------------------------------
   2  *
   3  * (c) The University of Glasgow, 2009
   4  *
   5  * Lag/Drag/Void profiling.
   6  *
   7  * Do not #include this file directly: #include "Rts.h" instead.
   8  *
   9  * To understand the structure of the RTS headers, see the wiki:
  10  *   http://hackage.haskell.org/trac/ghc/wiki/Commentary/SourceTree/Includes
  11  *
  12  * ---------------------------------------------------------------------------*/
  13
  14 #ifndef RTS_PROF_LDV_H
  15 #define RTS_PROF_LDV_H
  16
  17 #ifdef PROFILING
  18
  19 /* retrieves the LDV word from closure c */
  20 #define LDVW(c)                 (((StgClosure *)(c))->header.prof.hp.ldvw)
  21
  22 /*
  23  * Stores the creation time for closure c.
  24  * This macro is called at the very moment of closure creation.
  25  *
  26  * NOTE: this initializes LDVW(c) to zero, which ensures that there
  27  * is no conflict between retainer profiling and LDV profiling,
  28  * because retainer profiling also expects LDVW(c) to be initialised
  29  * to zero.
  30  */
  31
  32 #ifdef CMINUSMINUS
  33
  34 #define LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(c) \
  35   foreign "C" LDV_recordDead_FILL_SLOP_DYNAMIC(c "ptr")
  36
  37 #else
  38
  39 #define LDV_RECORD_CREATE(c)   \
  40   LDVW((c)) = ((StgWord)RTS_DEREF(era) << LDV_SHIFT) | LDV_STATE_CREATE
  41
  42 void LDV_recordDead_FILL_SLOP_DYNAMIC( StgClosure *p );
  43
  44 #define LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(c) \
  45   LDV_recordDead_FILL_SLOP_DYNAMIC(c)
  46
  47 #endif
  48
  49 #else  /* !PROFILING */
  50
  51 #define LDV_RECORD_CREATE(c)   /* nothing */
  52 #define LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(c)  /* nothing */
  53
  54 #endif /* PROFILING */
  55
  56 #endif /* STGLDVPROF_H */