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| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2021-04-07 13:22:05 +0300 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2021-04-07 13:22:05 +0300 |
| commit | 9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be (patch) | |
| tree | 1ec0fd0b4721f3c89960a2a0699cc398e6a659b3 /contrib/btree_gist/btree_bit.c | |
| parent | dd13ad9d39a1ba41cf329b6fe408b49be57c7b88 (diff) | |
| download | postgresql-9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be.tar.gz postgresql-9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be.zip | |
Add sortsupport for gist_btree opclasses, for faster index builds.
Commit 16fa9b2b30 introduced a faster way to build GiST indexes, by
sorting all the data. This commit adds the sortsupport functions needed
to make use of that feature for btree_gist.
Author: Andrey Borodin
Discussion: https://www.postgresql.org/message-id/2F3F7265-0D22-44DB-AD71-8554C743D943@yandex-team.ru
Diffstat (limited to 'contrib/btree_gist/btree_bit.c')
| -rw-r--r-- | contrib/btree_gist/btree_bit.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_bit.c b/contrib/btree_gist/btree_bit.c index 2225244ded5..61b2eecfd59 100644 --- a/contrib/btree_gist/btree_bit.c +++ b/contrib/btree_gist/btree_bit.c @@ -19,6 +19,7 @@ PG_FUNCTION_INFO_V1(gbt_bit_picksplit); PG_FUNCTION_INFO_V1(gbt_bit_consistent); PG_FUNCTION_INFO_V1(gbt_bit_penalty); PG_FUNCTION_INFO_V1(gbt_bit_same); +PG_FUNCTION_INFO_V1(gbt_bit_sortsupport); /* define for comparison */ @@ -209,3 +210,27 @@ gbt_bit_penalty(PG_FUNCTION_ARGS) PG_RETURN_POINTER(gbt_var_penalty(result, o, n, PG_GET_COLLATION(), &tinfo, fcinfo->flinfo)); } + +static int +gbt_bit_sort_build_cmp(Datum a, Datum b, SortSupport ssup) +{ + /* Use byteacmp(), like gbt_bitcmp() does */ + return DatumGetInt32(DirectFunctionCall2(byteacmp, + PointerGetDatum(a), + PointerGetDatum(b))); +} + +/* + * Sort support routine for fast GiST index build by sorting. + */ +Datum +gbt_bit_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_bit_sort_build_cmp; + ssup->abbrev_converter = NULL; + ssup->abbrev_abort = NULL; + ssup->abbrev_full_comparator = NULL; + PG_RETURN_VOID(); +} |