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Don't bother testing 0 length keys since they can only have one possible value.

This commit is contained in:
matt 2012-07-13 01:15:27 +00:00
parent eff06f78af
commit 87ed7965fb
1 changed files with 7 additions and 4 deletions
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11
common/lib/libc/gen/ptree.c
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@ -1,4 +1,4 @@
/* $NetBSD: ptree.c,v 1.6 2012/07/11 00:19:28 rmind Exp $ */
/* $NetBSD: ptree.c,v 1.7 2012/07/13 01:15:27 matt Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@ -40,7 +40,7 @@
#include <sys/types.h>
#include <sys/systm.h>
#include <lib/libkern/libkern.h>
__KERNEL_RCSID(0, "$NetBSD: ptree.c,v 1.6 2012/07/11 00:19:28 rmind Exp $");
__KERNEL_RCSID(0, "$NetBSD: ptree.c,v 1.7 2012/07/13 01:15:27 matt Exp $");
#else
#include <stddef.h>
#include <stdint.h>
@ -53,7 +53,7 @@ __KERNEL_RCSID(0, "$NetBSD: ptree.c,v 1.6 2012/07/11 00:19:28 rmind Exp $");
#else
#define KASSERT(e) do { } while (/*CONSTCOND*/ 0)
#endif
__RCSID("$NetBSD: ptree.c,v 1.6 2012/07/11 00:19:28 rmind Exp $");
__RCSID("$NetBSD: ptree.c,v 1.7 2012/07/13 01:15:27 matt Exp $");
#endif /* _KERNEL || _STANDALONE */
#ifdef _LIBC
@ -134,7 +134,7 @@ ptree_testnode(const pt_tree_t *pt, const pt_node_t *target,
{
const pt_bitlen_t bitlen = PTN_BRANCH_BITLEN(ptn);
if (bitlen == 0)
return PT_SLOT_ROOT;
return PT_SLOT_ROOT; /* mask or root, doesn't matter */
return (*pt->pt_ops->ptto_testnode)(NODETOKEY(pt, target),
PTN_BRANCH_BITOFF(ptn), bitlen, pt->pt_context);
}
@ -150,6 +150,9 @@ ptree_matchkey(const pt_tree_t *pt, const void *key,
static inline pt_slot_t
ptree_testkey(const pt_tree_t *pt, const void *key, const pt_node_t *ptn)
{
const pt_bitlen_t bitlen = PTN_BRANCH_BITLEN(ptn);
if (bitlen == 0)
return PT_SLOT_ROOT; /* mask or root, doesn't matter */
return (*pt->pt_ops->ptto_testkey)(key, PTN_BRANCH_BITOFF(ptn),
PTN_BRANCH_BITLEN(ptn), pt->pt_context);
}