Changeset: d66b2fc7d13b for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=d66b2fc7d13b
Modified Files:
gdk/gdk_group.c
Branch: Jul2017
Log Message:
When refining groups, combine old group id and new value and calculate a single
hash.
diffs (66 lines):
diff --git a/gdk/gdk_group.c b/gdk/gdk_group.c
--- a/gdk/gdk_group.c
+++ b/gdk/gdk_group.c
@@ -1064,16 +1064,58 @@ BATgroup_internal(BAT **groups, BAT **ex
switch (t) {
case TYPE_bte:
- GRP_create_partial_hash_table_tpe(bte);
+ if (grps && maxgrp < ((oid) 1 << (SIZEOF_LNG * 8 - 8)))
{
+ ulng v;
+ const bte *w = (bte *) Tloc(b, 0);
+ GRP_create_partial_hash_table_core(
+ (void) 0,
+ (v = (grps[r]<<8)|(unsigned char)w[p],
hash_lng(hs, &v)),
+ w[p] == w[hb] && grps[r] == grps[hb],
+ (void) 0,
+ NOGRPTST);
+ } else
+ GRP_create_partial_hash_table_tpe(bte);
break;
case TYPE_sht:
- GRP_create_partial_hash_table_tpe(sht);
+ if (grps && maxgrp < ((oid) 1 << (SIZEOF_LNG * 8 -
16))) {
+ ulng v;
+ const sht *w = (sht *) Tloc(b, 0);
+ GRP_create_partial_hash_table_core(
+ (void) 0,
+ (v = (grps[r]<<16)|(unsigned
short)w[p], hash_lng(hs, &v)),
+ w[p] == w[hb] && grps[r] == grps[hb],
+ (void) 0,
+ NOGRPTST);
+ } else
+ GRP_create_partial_hash_table_tpe(sht);
break;
case TYPE_int:
- GRP_create_partial_hash_table_tpe(int);
+ if (grps && maxgrp < ((oid) 1 << (SIZEOF_LNG * 8 -
32))) {
+ ulng v;
+ const int *w = (int *) Tloc(b, 0);
+ GRP_create_partial_hash_table_core(
+ (void) 0,
+ (v = (grps[r]<<32)|(unsigned int)w[p],
hash_lng(hs, &v)),
+ w[p] == w[hb] && grps[r] == grps[hb],
+ (void) 0,
+ NOGRPTST);
+ } else
+ GRP_create_partial_hash_table_tpe(int);
break;
case TYPE_lng:
- GRP_create_partial_hash_table_tpe(lng);
+#ifdef HAVE_HGE
+ if (grps) {
+ uhge v;
+ const lng *w = (lng *) Tloc(b, 0);
+ GRP_create_partial_hash_table_core(
+ (void) 0,
+ (v = ((uhge)grps[r]<<64)|(ulng)w[p],
hash_hge(hs, &v)),
+ w[p] == w[hb] && grps[r] == grps[hb],
+ (void) 0,
+ NOGRPTST);
+ } else
+#endif
+ GRP_create_partial_hash_table_tpe(lng);
break;
#ifdef HAVE_HGE
case TYPE_hge:
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