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Marginal performance improvement in aclmask(): don't bother with

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testing ownership if the caller isn't interested in any GOPTION bits
(which is the common case).  It did not matter in 8.0 where the ownership
test was just a trivial equality test, but it matters now.
This commit is contained in:
Tom Lane 2005-10-07 19:59:34 +00:00
parent b888ab82da
commit 426d0158ca
1 changed files with 7 additions and 6 deletions
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13
src/backend/utils/adt/acl.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/acl.c,v 1.123 2005/07/28 22:27:02 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/acl.c,v 1.124 2005/10/07 19:59:34 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1013,10 +1013,11 @@ aclmask(const Acl *acl, Oid roleid, Oid ownerId,
result = 0;
/* Owner always implicitly has all grant options */
if (has_privs_of_role(roleid, ownerId))
if ((mask & ACLITEM_ALL_GOPTION_BITS) &&
has_privs_of_role(roleid, ownerId))
{
result = mask & ACLITEM_ALL_GOPTION_BITS;
if (result == mask)
if ((how == ACLMASK_ALL) ? (result == mask) : (result != 0))
return result;
}
@ -1024,7 +1025,7 @@ aclmask(const Acl *acl, Oid roleid, Oid ownerId,
aidat = ACL_DAT(acl);
/*
* Check privileges granted directly to user or to public
* Check privileges granted directly to roleid or to public
*/
for (i = 0; i < num; i++)
{
@ -1040,11 +1041,11 @@ aclmask(const Acl *acl, Oid roleid, Oid ownerId,
}
/*
* Check privileges granted indirectly via roles.
* Check privileges granted indirectly via role memberships.
* We do this in a separate pass to minimize expensive indirect
* membership tests. In particular, it's worth testing whether
* a given ACL entry grants any privileges still of interest before
* we perform the is_member test.
* we perform the has_privs_of_role test.
*/
remaining = mask & ~result;
for (i = 0; i < num; i++)