diff options
| -rw-r--r-- | ChangeLog | 2 | ||||
| -rw-r--r-- | posix/glob.c | 31 |
2 files changed, 30 insertions, 3 deletions
@@ -1,5 +1,7 @@ 2007-10-14 Ulrich Drepper <drepper@redhat.com> + * posix/glob.c: Reimplement link_exists_p to use fstatat64. + * posix/glob.c: Add some branch prediction throughout. * nscd/nscd_getgr_r.c (nscd_getgr_r): Store result of successful diff --git a/posix/glob.c b/posix/glob.c index 38110fd135..b7d9617267 100644 --- a/posix/glob.c +++ b/posix/glob.c @@ -1222,21 +1222,42 @@ weak_alias (__glob_pattern_p, glob_pattern_p) allocated with alloca to be recycled. */ #if !defined _LIBC || !defined GLOB_ONLY_P static int -link_exists_p (const char *dir, size_t dirlen, const char *fname, - glob_t *pglob, int flags) +__attribute_noinline__ +link_exists2_p (const char *dir, size_t dirlen, const char *fname, + glob_t *pglob +# ifndef _LIBC + , int flags +# endif + ) { size_t fnamelen = strlen (fname); char *fullname = (char *) __alloca (dirlen + 1 + fnamelen + 1); struct stat st; +# ifndef _LIBC struct_stat64 st64; +# endif mempcpy (mempcpy (mempcpy (fullname, dir, dirlen), "/", 1), fname, fnamelen + 1); +# ifdef _LIBC + return (*pglob->gl_stat) (fullname, &st) == 0; +# else return ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0) ? (*pglob->gl_stat) (fullname, &st) : __stat64 (fullname, &st64)) == 0); +# endif } +# ifdef _LIBC +# define link_exists_p(dfd, dirname, dirnamelen, fname, pglob, flags) \ + (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0) \ + ? link_exists2_p (dirname, dirnamelen, fname, pglob) \ + : ({ struct stat64 st64; \ + __fxstatat64 (_STAT_VER, dfd, fname, &st64, 0) == 0; })) +# else +# define link_exists_p(dfd, dirname, dirnamelen, fname, pglob, flags) \ + link_exists2_p (dirname, dirnamelen, fname, pglob, flags) +# endif #endif @@ -1311,6 +1332,10 @@ glob_in_dir (const char *pattern, const char *directory, int flags, } else { +#ifdef _LIBC + int dfd = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0) + ? -1 : dirfd ((DIR *) stream)); +#endif int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0) | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0) #if defined _AMIGA || defined VMS @@ -1369,7 +1394,7 @@ glob_in_dir (const char *pattern, const char *directory, int flags, /* If the file we found is a symlink we have to make sure the target file exists. */ if (!DIRENT_MIGHT_BE_SYMLINK (d) - || link_exists_p (directory, dirlen, name, pglob, + || link_exists_p (dfd, directory, dirlen, name, pglob, flags)) { if (cur == names->count) |