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| author | unknown <bar@bar.mysql.r18.ru> | 2002-08-15 16:42:54 +0500 |
|---|---|---|
| committer | unknown <bar@bar.mysql.r18.ru> | 2002-08-15 16:42:54 +0500 |
| commit | bf5b046e841121c4250bd668449df99302de31ea (patch) | |
| tree | 0771a890e5d8ed36e182ce6069988f32b9db0bc7 /heap/hp_hash.c | |
| parent | 6cc0d7d7e8d8321ecd2d918cb0e3160eb0322ecd (diff) | |
| download | mariadb-git-bf5b046e841121c4250bd668449df99302de31ea.tar.gz | |
Some speed improvements
Diffstat (limited to 'heap/hp_hash.c')
| -rw-r--r-- | heap/hp_hash.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/heap/hp_hash.c b/heap/hp_hash.c index 424322fd5e7..4f7dc956cba 100644 --- a/heap/hp_hash.c +++ b/heap/hp_hash.c @@ -217,11 +217,14 @@ ulong hp_hashnr(register HP_KEYDEF *keydef, register const byte *key) if (seg->charset->hash_sort) seg->charset->hash_sort(seg->charset,pos,((uchar*)key)-pos,&nr,&nr2); else - for (; pos < (uchar*) key ; pos++) { - nr^=(ulong) ((((uint) nr & 63)+nr2) * - ((uint) seg->charset->sort_order[(uint) *pos])) + (nr << 8); - nr2+=3; + register uchar *sort_order=seg->charset->sort_order; + for (; pos < (uchar*) key ; pos++) + { + nr^=(ulong) ((((uint) nr & 63)+nr2) * + ((uint) sort_order[(uint) *pos])) + (nr << 8); + nr2+=3; + } } } else @@ -260,11 +263,15 @@ ulong hp_rec_hashnr(register HP_KEYDEF *keydef, register const byte *rec) if (seg->charset->hash_sort) seg->charset->hash_sort(seg->charset,pos,end-pos,&nr,&nr2); else - for (; pos < end ; pos++) { - nr^=(ulong) ((((uint) nr & 63)+nr2)* - ((uint) seg->charset->sort_order[(uint) *pos]))+ (nr << 8); - nr2+=3; + register uchar *sort_order=seg->charset->sort_order; + + for (; pos < end ; pos++) + { + nr^=(ulong) ((((uint) nr & 63)+nr2)* + ((uint) sort_order[(uint) *pos]))+ (nr << 8); + nr2+=3; + } } } else |