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Diffstat (limited to 'src/backend/utils/hash/hashfn.c')
| -rw-r--r-- | src/backend/utils/hash/hashfn.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/backend/utils/hash/hashfn.c b/src/backend/utils/hash/hashfn.c index 6eeedc9383c..e1e65c03507 100644 --- a/src/backend/utils/hash/hashfn.c +++ b/src/backend/utils/hash/hashfn.c @@ -9,7 +9,13 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/hash/hashfn.c,v 1.30 2007/01/05 22:19:43 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/utils/hash/hashfn.c,v 1.31 2007/06/01 15:33:18 tgl Exp $ + * + * NOTES + * It is expected that every bit of a hash function's 32-bit result is + * as random as every other; failure to ensure this is likely to lead + * to poor performance of hash tables. In most cases a hash + * function should use hash_any() or its variant hash_uint32(). * *------------------------------------------------------------------------- */ @@ -58,8 +64,7 @@ uint32 oid_hash(const void *key, Size keysize) { Assert(keysize == sizeof(Oid)); - /* We don't actually bother to do anything to the OID value ... */ - return (uint32) *((const Oid *) key); + return DatumGetUInt32(hash_uint32((uint32) *((const Oid *) key))); } /* |