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Put caching back on the pts major number. It's worth the code 

overhead not to go look it up a zillion times when running fstat or ps
on a machine with a billion people logged in.  fstat mostly.
This commit is contained in:
atatat 2004-12-16 04:33:03 +00:00
parent 4e04a6f62d
commit d91a4a5990
1 changed files with 5 additions and 5 deletions
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10
lib/libc/gen/devname.c
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@ -1,4 +1,4 @@
/* $NetBSD: devname.c,v 1.15 2004/12/16 04:15:19 atatat Exp $ */
/* $NetBSD: devname.c,v 1.16 2004/12/16 04:33:03 atatat Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
@ -74,7 +74,7 @@
#if 0
static char sccsid[] = "@(#)devname.c 8.2 (Berkeley) 4/29/95";
#else
__RCSID("$NetBSD: devname.c,v 1.15 2004/12/16 04:15:19 atatat Exp $");
__RCSID("$NetBSD: devname.c,v 1.16 2004/12/16 04:33:03 atatat Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
@ -120,8 +120,7 @@ devname(dev, type)
DBT data, key;
DEVC *ptr, **pptr;
static DEVC **devtb = NULL;
dev_t pts;
static dev_t pts = (dev_t)~1;
if (!db && !failure &&
!(db = dbopen(_PATH_DEVDB, O_RDONLY, 0, DB_HASH, NULL))) {
@ -173,7 +172,8 @@ devname(dev, type)
return (NULL);
ptr->valid = INVALID;
if (type == S_IFCHR) {
pts = getdevmajor("pts", S_IFCHR);
if (pts == (dev_t)~1)
pts = getdevmajor("pts", S_IFCHR);
if (pts != (dev_t)~0 && major(dev) == pts) {
(void)snprintf(ptr->name, sizeof(ptr->name),
"%s%d", _PATH_DEV_PTS +