Module Name: src
Committed By: sjg
Date: Thu Feb 22 01:59:28 UTC 2018
Modified Files:
src/usr.bin/make: parse.c
Log Message:
Avoid calling sysconf for every file loaded.
At start of a meta build this can be measurable overhead.
Patch from bdrewery at freebsd.org
To generate a diff of this commit:
cvs rdiff -u -r1.226 -r1.227 src/usr.bin/make/parse.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.bin/make/parse.c
diff -u src/usr.bin/make/parse.c:1.226 src/usr.bin/make/parse.c:1.227
--- src/usr.bin/make/parse.c:1.226 Mon Feb 12 21:38:09 2018
+++ src/usr.bin/make/parse.c Thu Feb 22 01:59:28 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: parse.c,v 1.226 2018/02/12 21:38:09 sjg Exp $ */
+/* $NetBSD: parse.c,v 1.227 2018/02/22 01:59:28 sjg Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1993
@@ -69,14 +69,14 @@
*/
#ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: parse.c,v 1.226 2018/02/12 21:38:09 sjg Exp $";
+static char rcsid[] = "$NetBSD: parse.c,v 1.227 2018/02/22 01:59:28 sjg Exp $";
#else
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
#else
-__RCSID("$NetBSD: parse.c,v 1.226 2018/02/12 21:38:09 sjg Exp $");
+__RCSID("$NetBSD: parse.c,v 1.227 2018/02/22 01:59:28 sjg Exp $");
#endif
#endif /* not lint */
#endif
@@ -481,7 +481,7 @@ static struct loadedfile *
loadfile(const char *path, int fd)
{
struct loadedfile *lf;
- long pagesize;
+ static long pagesize = 0;
ssize_t result;
size_t bufpos;
@@ -503,7 +503,8 @@ loadfile(const char *path, int fd)
if (load_getsize(fd, &lf->len) == SUCCESS) {
/* found a size, try mmap */
- pagesize = sysconf(_SC_PAGESIZE);
+ if (pagesize == 0)
+ pagesize = sysconf(_SC_PAGESIZE);
if (pagesize <= 0) {
pagesize = 0x1000;
}
