From 9d6568da0f55fb05ea5c28e06efb51046fd270bf Mon Sep 17 00:00:00 2001
From: Dan McGee <dan@archlinux.org>
Date: Thu, 9 Jun 2011 13:34:13 -0500
Subject: _alpm_lstat: only duplicate string if necessary
The vast majority of the time we will just be passing the same string
value on to the lstat() call. The only time we need to duplicate it is
if the path ends in '/'. In one run using a profiler, only 400 of the
200,000 calls (0.2%) required the string to be copied first.
Signed-off-by: Dan McGee <dan@archlinux.org>
---
lib/libalpm/util.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
(limited to 'lib/libalpm')
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index 6f0763d5..d24a51a6 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -631,17 +631,18 @@ const char *_alpm_filecache_setup(void)
int _alpm_lstat(const char *path, struct stat *buf)
{
int ret;
- char *newpath = strdup(path);
- size_t len = strlen(newpath);
+ size_t len = strlen(path);
/* strip the trailing slash if one exists */
- if(len != 0 && newpath[len - 1] == '/') {
- newpath[len - 1] = '\0';
+ if(len != 0 && path[len - 1] == '/') {
+ char *newpath = strdup(path);
+ newpath[len - 1] = '\0';
+ ret = lstat(newpath, buf);
+ free(newpath);
+ } else {
+ ret = lstat(path, buf);
}
- ret = lstat(newpath, buf);
-
- FREE(newpath);
return ret;
}
--
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