Small refactoring

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

diff --git a/includes/Cmm.h b/includes/Cmm.h
index 52b5bec..6abe760 100644 (file)
--- a/includes/Cmm.h
+++ b/includes/Cmm.h
@@ -413,6 +413,9 @@
 /* The offset of the payload of an array */
 #define BYTE_ARR_CTS(arr)  ((arr) + SIZEOF_StgArrWords)
 
+/* The number of words allocated in an array payload */
+#define BYTE_ARR_WDS(arr) ROUNDUP_BYTES_TO_WDS(StgArrWords_bytes(arr))
+
 /* Getting/setting the info pointer of a closure */
 #define SET_INFO(p,info) StgHeader_info(p) = info
 #define GET_INFO(p) StgHeader_info(p)
@@ -464,6 +467,12 @@
 #define mutArrPtrsCardWords(n) \
     ROUNDUP_BYTES_TO_WDS(((n) + (1 << MUT_ARR_PTRS_CARD_BITS) - 1) >> MUT_ARR_PTRS_CARD_BITS)
 
+#if defined(PROFILING) || (!defined(THREADED_RTS) && defined(DEBUG))
+#define OVERWRITING_CLOSURE(c) foreign "C" overwritingClosure(c "ptr")
+#else
+#define OVERWRITING_CLOSURE(c) /* nothing */
+#endif
+
 /* -----------------------------------------------------------------------------
    Voluntary Yields/Blocks