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libbb: shrink recursive_action() by reducing memory pressure

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function                                             old     new   delta
recursive_action1                                      -     316    +316
file_action_grep                                     161     164      +3
add_to_prg_cache_if_socket                           202     205      +3
depmod_main                                          509     511      +2
writeFileToTarball                                   488     489      +1
parse_module                                         281     282      +1
fileAction                                           207     208      +1
act                                                  189     190      +1
add_to_dirlist                                        65      64      -1
writeTarFile                                         196     194      -2
uuidcache_init                                        47      45      -2
uuidcache_check_device                               109     107      -2
true_action                                            8       6      -2
run_parts_main                                       310     308      -2
netstat_main                                         534     532      -2
lsusb_main                                            29      27      -2
lspci_main                                            45      43      -2
initial_scan                                         138     136      -2
grep_main                                            845     843      -2
find_main                                            482     480      -2
config_file_action                                   437     435      -2
chmod_main                                           142     140      -2
dirAction                                             14      10      -4
diff_main                                           1544    1540      -4
chown_main                                           154     148      -6
skip_dir                                             136     129      -7
dir_act                                              191     184      -7
recursive_action                                     453      69    -384
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 7/20 up/down: 328/-439)        Total: -111 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2020-10-01 21:52:16 +02:00
parent 3c3928fc65
commit 689d0650ab
19 changed files with 159 additions and 150 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
coreutils/chmod.c
View File

@ -65,12 +65,14 @@
* symbolic links encountered during recursive directory traversals.
*/
static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf, void* param, int depth)
static int FAST_FUNC fileAction(struct recursive_state *state,
const char *fileName,
struct stat *statbuf)
{
mode_t newmode;
/* match coreutils behavior */
if (depth == 0) {
if (state->depth == 0) {
/* statbuf holds lstat result, but we need stat (follow link) */
if (stat(fileName, statbuf))
goto err;
@ -79,9 +81,9 @@ static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf, void
return TRUE;
}
newmode = bb_parse_mode((char *)param, statbuf->st_mode);
newmode = bb_parse_mode((char *)state->userData, statbuf->st_mode);
if (newmode == (mode_t)-1)
bb_error_msg_and_die("invalid mode '%s'", (char *)param);
bb_error_msg_and_die("invalid mode '%s'", (char *)state->userData);
if (chmod(fileName, newmode) == 0) {
if (OPT_VERBOSE
@ -136,8 +138,7 @@ int chmod_main(int argc UNUSED_PARAM, char **argv)
OPT_RECURSE, // recurse
fileAction, // file action
fileAction, // dir action
smode, // user data
0) // depth
smode) // user data
) {
retval = EXIT_FAILURE;
}