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Preventing intersection of ranges during page split. Changes are only

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optimization, so don't backpatch.
This commit is contained in:
Teodor Sigaev
2009-12-02 13:13:24 +00:00
parent 59ed94ad0c
commit aebc4e67ff
14 changed files with 145 additions and 83 deletions
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17
contrib/btree_gist/btree_float8.c
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@ -1,5 +1,5 @@
/*
* $PostgreSQL: pgsql/contrib/btree_gist/btree_float8.c,v 1.8 2009/06/11 14:48:50 momjian Exp $
* $PostgreSQL: pgsql/contrib/btree_gist/btree_float8.c,v 1.9 2009/12/02 13:13:24 teodor Exp $
*/
#include "btree_gist.h"
#include "btree_utils_num.h"
@ -57,13 +57,18 @@ gbt_float8lt(const void *a, const void *b)
static int
gbt_float8key_cmp(const void *a, const void *b)
{
float8KEY *ia = (float8KEY*)(((Nsrt *) a)->t);
float8KEY *ib = (float8KEY*)(((Nsrt *) b)->t);
if (*(float8 *) &(((Nsrt *) a)->t[0]) > *(float8 *) &(((Nsrt *) b)->t[0]))
return 1;
else if (*(float8 *) &(((Nsrt *) a)->t[0]) < *(float8 *) &(((Nsrt *) b)->t[0]))
return -1;
return 0;
if (ia->lower == ib->lower)
{
if (ia->upper == ib->upper)
return 0;
return (ia->upper > ib->upper) ? 1 : -1;
}
return (ia->lower > ib->lower) ? 1 : -1;
}