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Performance improvement for lexing long strings: increase flex's

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YY_READ_BUF_SIZE, which turns out to have nothing to do with buffer size.
It's just a totally arbitrary upper limit on how much data myinput() is
asked for at one time.
This commit is contained in:
Tom Lane 2000-03-13 01:52:06 +00:00
parent 7cb253ed19
commit a84c95634e
1 changed files with 4 additions and 1 deletions
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5
src/backend/parser/scan.l
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.66 2000/03/11 05:14:06 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.67 2000/03/13 01:52:06 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -47,6 +47,9 @@ static int myinput(char* buf, int max);
#undef YY_INPUT
#define YY_INPUT(buf,result,max) {result = myinput(buf,max);}
/* No reason to constrain amount of data slurped per myinput() call. */
#define YY_READ_BUF_SIZE 16777216
#else /* !FLEX_SCANNER */
#undef input