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Commit15a3c33

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Change MemSet to use long instead of int32, for better performance on
64-bit platforms.by ITAGAKI Takahiro
1 parent422998d commit15a3c33

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1 file changed

+13
-13
lines changed

1 file changed

+13
-13
lines changed

‎src/include/c.h‎

Lines changed: 13 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -12,7 +12,7 @@
1212
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
1313
* Portions Copyright (c) 1994, Regents of the University of California
1414
*
15-
* $PostgreSQL: pgsql/src/include/c.h,v 1.195 2006/02/03 13:53:15 momjian Exp $
15+
* $PostgreSQL: pgsql/src/include/c.h,v 1.196 2006/02/16 23:23:50 petere Exp $
1616
*
1717
*-------------------------------------------------------------------------
1818
*/
@@ -603,8 +603,8 @@ typedef NameData *Name;
603603
} while (0)
604604

605605

606-
/* Get a bit mask of the bits set in non-int32 aligned addresses */
607-
#defineINT_ALIGN_MASK (sizeof(int32) - 1)
606+
/* Get a bit mask of the bits set in non-long aligned addresses */
607+
#defineLONG_ALIGN_MASK (sizeof(long) - 1)
608608

609609
/*
610610
* MemSet
@@ -624,8 +624,8 @@ typedef NameData *Name;
624624
int_val= (val); \
625625
Size_len= (len); \
626626
\
627-
if ((((long)_vstart)&INT_ALIGN_MASK)==0&& \
628-
(_len&INT_ALIGN_MASK)==0&& \
627+
if ((((long)_vstart)&LONG_ALIGN_MASK)==0&& \
628+
(_len&LONG_ALIGN_MASK)==0&& \
629629
_val==0&& \
630630
_len <=MEMSET_LOOP_LIMIT&& \
631631
/* \
@@ -634,8 +634,8 @@ typedef NameData *Name;
634634
*/ \
635635
MEMSET_LOOP_LIMIT!=0) \
636636
{ \
637-
int32*_start= (int32*)_vstart; \
638-
int32*_stop= (int32*) ((char*)_start+_len); \
637+
long*_start= (long*)_vstart; \
638+
long*_stop= (long*) ((char*)_start+_len); \
639639
while (_start<_stop) \
640640
*_start++=0; \
641641
} \
@@ -652,16 +652,16 @@ typedef NameData *Name;
652652
#defineMemSetAligned(start,val,len) \
653653
do \
654654
{ \
655-
int32*_start = (int32 *) (start); \
655+
long*_start = (long *) (start); \
656656
int_val = (val); \
657657
Size_len = (len); \
658658
\
659-
if ((_len &INT_ALIGN_MASK) == 0 && \
659+
if ((_len &LONG_ALIGN_MASK) == 0 && \
660660
_val == 0 && \
661661
_len <= MEMSET_LOOP_LIMIT && \
662662
MEMSET_LOOP_LIMIT != 0) \
663663
{ \
664-
int32 *_stop = (int32 *) ((char *) _start + _len); \
664+
long *_stop = (long *) ((char *) _start + _len); \
665665
while (_start < _stop) \
666666
*_start++ = 0; \
667667
} \
@@ -679,16 +679,16 @@ typedef NameData *Name;
679679
* this approach.
680680
*/
681681
#defineMemSetTest(val,len) \
682-
( ((len) &INT_ALIGN_MASK) == 0 && \
682+
( ((len) &LONG_ALIGN_MASK) == 0 && \
683683
(len) <= MEMSET_LOOP_LIMIT && \
684684
MEMSET_LOOP_LIMIT != 0 && \
685685
(val) == 0 )
686686

687687
#defineMemSetLoop(start,val,len) \
688688
do \
689689
{ \
690-
int32 * _start = (int32 *) (start); \
691-
int32 * _stop = (int32 *) ((char *) _start + (Size) (len)); \
690+
long * _start = (long *) (start); \
691+
long * _stop = (long *) ((char *) _start + (Size) (len)); \
692692
\
693693
while (_start < _stop) \
694694
*_start++ = 0; \

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