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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 commit15a3c33Copy full SHA for 15a3c33

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1 file changed

+13

-13

lines changed

src/include
- c.h

1 file changed

+13

-13

lines changed

`‎src/include/c.h`

Lines changed: 13 additions & 13 deletions

Original file line number	Diff line number	Diff line change
`@@ -12,7 +12,7 @@`
`12`	`12`	`* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group`
`13`	`13`	`* Portions Copyright (c) 1994, Regents of the University of California`
`14`	`14`	`*`
`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 $`
`16`	`16`	`*`
`17`	`17`	`*-------------------------------------------------------------------------`
`18`	`18`	`*/`
`@@ -603,8 +603,8 @@ typedef NameData *Name;`
`603`	`603`	`} while (0)`
`604`	`604`
`605`	`605`
`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)`
`608`	`608`
`609`	`609`	`/*`
`610`	`610`	`* MemSet`
`@@ -624,8 +624,8 @@ typedef NameData *Name;`
`624`	`624`	`int_val= (val); \`
`625`	`625`	`Size_len= (len); \`
`626`	`626`	`\`
`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&& \`
`629`	`629`	`_val==0&& \`
`630`	`630`	`_len <=MEMSET_LOOP_LIMIT&& \`
`631`	`631`	`/* \`
`@@ -634,8 +634,8 @@ typedef NameData *Name;`
`634`	`634`	`*/ \`
`635`	`635`	`MEMSET_LOOP_LIMIT!=0) \`
`636`	`636`	`{ \`
`637`		`-int32_start= (int32)_vstart; \`
`638`		`-int32_stop= (int32) ((char*)_start+_len); \`
	`637`	`+long_start= (long)_vstart; \`
	`638`	`+long_stop= (long) ((char*)_start+_len); \`
`639`	`639`	`while (_start<_stop) \`
`640`	`640`	`*_start++=0; \`
`641`	`641`	`} \`
`@@ -652,16 +652,16 @@ typedef NameData *Name;`
`652`	`652`	`#defineMemSetAligned(start,val,len) \`
`653`	`653`	`do \`
`654`	`654`	`{ \`
`655`		`-int32_start = (int32 ) (start); \`
	`655`	`+long_start = (long ) (start); \`
`656`	`656`	`int_val = (val); \`
`657`	`657`	`Size_len = (len); \`
`658`	`658`	`\`
`659`		`-if ((_len &INT_ALIGN_MASK) == 0 && \`
	`659`	`+if ((_len &LONG_ALIGN_MASK) == 0 && \`
`660`	`660`	`_val == 0 && \`
`661`	`661`	`_len <= MEMSET_LOOP_LIMIT && \`
`662`	`662`	`MEMSET_LOOP_LIMIT != 0) \`
`663`	`663`	`{ \`
`664`		`-int32 _stop = (int32 ) ((char *) _start + _len); \`
	`664`	`+long _stop = (long ) ((char *) _start + _len); \`
`665`	`665`	`while (_start < _stop) \`
`666`	`666`	`*_start++ = 0; \`
`667`	`667`	`} \`
`@@ -679,16 +679,16 @@ typedef NameData *Name;`
`679`	`679`	`* this approach.`
`680`	`680`	`*/`
`681`	`681`	`#defineMemSetTest(val,len) \`
`682`		`-( ((len) &INT_ALIGN_MASK) == 0 && \`
	`682`	`+( ((len) &LONG_ALIGN_MASK) == 0 && \`
`683`	`683`	`(len) <= MEMSET_LOOP_LIMIT && \`
`684`	`684`	`MEMSET_LOOP_LIMIT != 0 && \`
`685`	`685`	`(val) == 0 )`
`686`	`686`
`687`	`687`	`#defineMemSetLoop(start,val,len) \`
`688`	`688`	`do \`
`689`	`689`	`{ \`
`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)); \`
`692`	`692`	`\`
`693`	`693`	`while (_start < _stop) \`
`694`	`694`	`*_start++ = 0; \`

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Commit15a3c33

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`‎src/include/c.h`

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