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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

17
findutils/find.c
View File

@@ -889,10 +889,10 @@ ACTF(links)
}
#endif
static int FAST_FUNC fileAction(const char *fileName,
struct stat *statbuf,
void *userData UNUSED_PARAM,
int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
static int FAST_FUNC fileAction(
struct recursive_state *state IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM),
const char *fileName,
struct stat *statbuf)
{
int r;
int same_fs = 1;
@@ -911,12 +911,12 @@ static int FAST_FUNC fileAction(const char *fileName,
#endif
#if ENABLE_FEATURE_FIND_MAXDEPTH
if (depth < G.minmaxdepth[0]) {
if (state->depth < G.minmaxdepth[0]) {
if (same_fs)
return TRUE; /* skip this, continue recursing */
return SKIP; /* stop recursing */
}
if (depth > G.minmaxdepth[1])
if (state->depth > G.minmaxdepth[1])
return SKIP; /* stop recursing */
#endif
@@ -927,7 +927,7 @@ static int FAST_FUNC fileAction(const char *fileName,
#if ENABLE_FEATURE_FIND_MAXDEPTH
if (S_ISDIR(statbuf->st_mode)) {
if (depth == G.minmaxdepth[1])
if (state->depth == G.minmaxdepth[1])
return SKIP;
}
#endif
@@ -1570,8 +1570,7 @@ int find_main(int argc UNUSED_PARAM, char **argv)
G.recurse_flags,/* flags */
fileAction, /* file action */
fileAction, /* dir action */
NULL, /* user data */
0) /* depth */
NULL) /* user data */
) {
G.exitstatus |= EXIT_FAILURE;
}

13
findutils/grep.c
View File

@@ -656,10 +656,9 @@ static void load_pattern_list(llist_t **lst, char *pattern)
llist_add_to(lst, new_grep_list_data(p, 0));
}
static int FAST_FUNC file_action_grep(const char *filename,
struct stat *statbuf,
void* matched,
int depth UNUSED_PARAM)
static int FAST_FUNC file_action_grep(struct recursive_state *state UNUSED_PARAM,
const char *filename,
struct stat *statbuf)
{
FILE *file;
@@ -686,7 +685,7 @@ static int FAST_FUNC file_action_grep(const char *filename,
return 0;
}
cur_file = filename;
*(int*)matched |= grep_file(file);
*(int*)state->userData |= grep_file(file);
fclose(file);
return 1;
}
@@ -702,8 +701,8 @@ static int grep_dir(const char *dir)
| 0,
/* fileAction= */ file_action_grep,
/* dirAction= */ NULL,
/* userData= */ &matched,
0);
/* userData= */ &matched
);
return matched;
}