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authorDan McGee <dan@archlinux.org>2008-06-15 19:15:36 -0500
committerDan McGee <dan@archlinux.org>2008-06-15 22:52:27 -0500
commit29bf6814f74096e5d8ea22058e638eb362717b8a (patch)
tree1b608ba8071c1c7e52808a4b178ba8225ef6d2b1 /lib/libalpm/be_files.c
parent7ff5a917fd0a91cd03ba61419a57053e4ae17e92 (diff)
Use access() instead of stat() when possible
We were using the stat() system call in quite a few places when we didn't actually need anything the stat struct returned- we were simply checking for file existence. access() will be more efficient in those cases. Before (strace pacman -Ss pacman): % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 33.16 0.005987 0 19016 stat64 After: % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 34.85 0.003863 0 12633 1 access 7.95 0.000881 0 6391 7 stat64 Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'lib/libalpm/be_files.c')
-rw-r--r--lib/libalpm/be_files.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/libalpm/be_files.c b/lib/libalpm/be_files.c
index 12c60b24..f5d4e826 100644
--- a/lib/libalpm/be_files.c
+++ b/lib/libalpm/be_files.c
@@ -355,7 +355,6 @@ static char *get_pkgpath(pmdb_t *db, pmpkg_t *info)
int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
{
FILE *fp = NULL;
- struct stat buf;
char path[PATH_MAX];
char line[513];
char *pkgpath = NULL;
@@ -393,7 +392,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
pkgpath = get_pkgpath(db, info);
- if(stat(pkgpath, &buf)) {
+ if(access(pkgpath, F_OK)) {
/* directory doesn't exist or can't be opened */
_alpm_log(PM_LOG_DEBUG, "cannot find '%s-%s' in db '%s'\n",
info->name, info->version, db->treename);
@@ -631,7 +630,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
/* INSTALL */
if(inforeq & INFRQ_SCRIPTLET) {
snprintf(path, PATH_MAX, "%sinstall", pkgpath);
- if(!stat(path, &buf)) {
+ if(access(path, F_OK) == 0) {
info->scriptlet = 1;
}
}