diff options
| author | Dan McGee <dan@archlinux.org> | 2008-06-15 19:15:36 -0500 |
|---|---|---|
| committer | Dan McGee <dan@archlinux.org> | 2008-06-15 22:52:27 -0500 |
| commit | 29bf6814f74096e5d8ea22058e638eb362717b8a (patch) | |
| tree | 1b608ba8071c1c7e52808a4b178ba8225ef6d2b1 /src/pacman | |
| parent | 7ff5a917fd0a91cd03ba61419a57053e4ae17e92 (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 'src/pacman')
| -rw-r--r-- | src/pacman/package.c | 5 | ||||
| -rw-r--r-- | src/pacman/util.c | 6 |
2 files changed, 4 insertions, 7 deletions
diff --git a/src/pacman/package.c b/src/pacman/package.c index 1698806f..06800378 100644 --- a/src/pacman/package.c +++ b/src/pacman/package.c @@ -22,8 +22,8 @@ #include <stdlib.h> #include <stdio.h> #include <string.h> +#include <unistd.h> #include <limits.h> -#include <sys/stat.h> #include <wchar.h> #include <alpm.h> @@ -176,7 +176,6 @@ void dump_pkg_backups(pmpkg_t *pkg) if(alpm_pkg_get_backup(pkg)) { /* package has backup files, so print them */ for(i = alpm_pkg_get_backup(pkg); i; i = alpm_list_next(i)) { - struct stat buf; char path[PATH_MAX]; char *str = strdup(alpm_list_getdata(i)); char *ptr = index(str, '\t'); @@ -188,7 +187,7 @@ void dump_pkg_backups(pmpkg_t *pkg) ptr++; snprintf(path, PATH_MAX-1, "%s%s", root, str); /* if we find the file, calculate checksums, otherwise it is missing */ - if(!stat(path, &buf)) { + if(access(path, R_OK) == 0) { char *md5sum = alpm_get_md5sum(path); if(md5sum == NULL) { diff --git a/src/pacman/util.c b/src/pacman/util.c index e702886b..d7ac9e38 100644 --- a/src/pacman/util.c +++ b/src/pacman/util.c @@ -22,7 +22,6 @@ #include <sys/types.h> #include <sys/ioctl.h> #include <sys/time.h> -#include <sys/stat.h> #include <stdio.h> #include <stdlib.h> @@ -125,7 +124,7 @@ int makepath(const char *path) * orig - a copy of path so we can safely butcher it with strsep * str - the current position in the path string (after the delimiter) * ptr - the original position of str after calling strsep - * incr - incrementally generated path for use in stat/mkdir call + * incr - incrementally generated path for use in access/mkdir call */ char *orig, *str, *ptr, *incr; mode_t oldmask = umask(0000); @@ -136,12 +135,11 @@ int makepath(const char *path) str = orig; while((ptr = strsep(&str, "/"))) { if(strlen(ptr)) { - struct stat buf; /* we have another path component- append the newest component to * existing string and create one more level of dir structure */ strcat(incr, "/"); strcat(incr, ptr); - if(stat(incr, &buf)) { + if(access(incr, F_OK)) { if(mkdir(incr, 0755)) { ret = 1; break; |