Inline frequently called functions.

1 files changed, 22 insertions, 1 deletions

diff --git a/src/include/c.h b/src/include/c.h
index 05c3cc5e923..b247b2e8fa2 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -7,7 +7,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: c.h,v 1.19 1997/09/08 21:50:24 momjian Exp $
+ * $Id: c.h,v 1.20 1997/09/18 14:20:40 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -692,6 +692,27 @@ typedef struct Exception
 /* we do this so if the macro is used in an if action, it will work */
 #define strNcpy(dst,src,len)	(strncpy((dst),(src),(len)),*((dst)+(len))='\0')
 
+/* Get a bit mask of the bits set in non-int32 aligned addresses */
+#define INT_ALIGN_MASK (sizeof(int32) - 1)
+
+/* This function gets call too often, so we inline it if we can */
+#define MemSet(start, val, len)	do \
+								{   /* are we aligned for int32? */ \
+									if (((start) & INT_ALIGN_MASK) == 0 && \
+										((len) & INT_ALIGN_MASK) == 0 && \
+										(val) == 0 && \
+										(len) <= 256) \
+									{ \
+										int32 *i = (int32 *)(start); \
+										int32 *stop = (int32 *)((char *)(start) + (len)); \
+										\
+										while (i < stop) \
+											*i++ = 0; \
+									} \
+									else \
+										memset((start), (val), (len)); \
+								}
+
 /* ----------------------------------------------------------------
  *				Section 9: externs
  * ----------------------------------------------------------------