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*: use llist_pop for traverse-and-free list operation

Browse Source 
function                                             old     new   delta
append_file_list_to_list                             109     111      +2
udhcpc_main                                         2414    2413      -1
run_parts_main                                       325     324      -1
od_main                                             2324    2323      -1
getopt_main                                          709     707      -2
env_main                                             253     251      -2
sed_main                                             659     656      -3
ps_main                                              522     519      -3
traceroute_main                                     3960    3954      -6
sort_main                                            844     838      -6
diff_main                                            866     858      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/10 up/down: 2/-33)            Total: -31 bytes
This commit is contained in:
Denis Vlasenko 2008-06-15 05:40:56 +00:00
parent 873b895d50
commit d50dda8c35
14 changed files with 19 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
archival/tar.c
View File

@ -659,16 +659,11 @@ int writeTarFile(int tar_fd, int verboseFlag,
static llist_t *append_file_list_to_list(llist_t *list)
{
FILE *src_stream;
llist_t *cur = list;
llist_t *tmp;
char *line;
llist_t *newlist = NULL;
while (cur) {
src_stream = xfopen(cur->data, "r");
tmp = cur;
cur = cur->link;
free(tmp);
while (list) {
src_stream = xfopen(llist_pop(&list), "r");
while ((line = xmalloc_fgetline(src_stream)) != NULL) {
/* kill trailing '/' unless the string is just "/" */
char *cp = last_char_is(line, '/');

3
coreutils/env.c
View File

@ -62,8 +62,7 @@ int env_main(int argc ATTRIBUTE_UNUSED, char **argv)
environ = cleanenv;
} else {
while (unset_env) {
unsetenv(unset_env->data);
unset_env = unset_env->link;
unsetenv(llist_pop(&unset_env));
}
}

3
coreutils/od_bloaty.c
View File

@ -1281,8 +1281,7 @@ int od_main(int argc, char **argv)
if (opt & OPT_o) decode_format_string("o2");
//if (opt & OPT_t)...
while (lst_t) {
decode_format_string(lst_t->data);
lst_t = lst_t->link;
decode_format_string(llist_pop(&lst_t));
}
if (opt & OPT_v) verbose = 1;
if (opt & OPT_x) decode_format_string("x2");

4
coreutils/sort.c
View File

@ -314,7 +314,7 @@ int sort_main(int argc ATTRIBUTE_UNUSED, char **argv)
0
};
struct sort_key *key = add_key();
char *str_k = lst_k->data;
char *str_k = llist_pop(&lst_k);
const char *temp2;
i = 0; /* i==0 before comma, 1 after (-k3,6) */
@ -344,8 +344,6 @@ int sort_main(int argc ATTRIBUTE_UNUSED, char **argv)
str_k++;
}
}
/* leaking lst_k... */
lst_k = lst_k->link;
}
#endif
/* global b strips leading and trailing spaces */

6
debianutils/run_parts.c
View File

@ -42,7 +42,7 @@ struct globals {
#define cur (G.cur )
#define cmd (G.cmd )
enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(struct globals)) / sizeof(cmd[0]) };
enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
enum {
OPT_r = (1 << 0),
@ -130,9 +130,7 @@ int run_parts_main(int argc ATTRIBUTE_UNUSED, char **argv)
n = 1;
while (arg_list && n < NUM_CMD) {
cmd[n] = arg_list->data;
arg_list = arg_list->link;
n++;
cmd[n++] = llist_pop(&arg_list);
}
/* cmd[n] = NULL; - is already zeroed out */

9
editors/diff.c
View File

@ -1289,14 +1289,9 @@ int diff_main(int argc ATTRIBUTE_UNUSED, char **argv)
while (L_arg) {
if (label1 && label2)
bb_show_usage();
if (!label1)
label1 = L_arg->data;
else { /* then label2 is NULL */
if (label1) /* then label2 is NULL */
label2 = label1;
label1 = L_arg->data;
}
/* we leak L_arg here... */
L_arg = L_arg->link;
label1 = llist_pop(&L_arg);
}
/*

8
editors/sed.c
View File

@ -1267,21 +1267,17 @@ int sed_main(int argc ATTRIBUTE_UNUSED, char **argv)
if (opt & 0x2) G.regex_type |= REG_EXTENDED; // -r
//if (opt & 0x4) G.be_quiet++; // -n
while (opt_e) { // -e
add_cmd_block(opt_e->data);
opt_e = opt_e->link;
/* we leak opt_e here... */
add_cmd_block(llist_pop(&opt_e));
}
while (opt_f) { // -f
char *line;
FILE *cmdfile;
cmdfile = xfopen(opt_f->data, "r");
cmdfile = xfopen(llist_pop(&opt_f), "r");
while ((line = xmalloc_fgetline(cmdfile)) != NULL) {
add_cmd(line);
free(line);
}
fclose(cmdfile);
opt_f = opt_f->link;
/* we leak opt_f here... */
}
/* if we didn't get a pattern from -e or -f, use argv[0] */
if (!(opt & 0x18)) {

2
findutils/xargs.c
View File

@ -502,7 +502,7 @@ int xargs_main(int argc, char **argv)
if (child_error > 0 && child_error != 123) {
break;
}
}
} /* while */
if (ENABLE_FEATURE_CLEAN_UP)
free(max_chars);
return child_error;

2
libbb/getopt32.c
View File

@ -137,7 +137,7 @@ const char *opt_complementary
opt_complementary = "vv:b::b-c:c-b";
f = getopt32(argv, "vb:c", &my_b, &verbose_level);
if (f & 2) // -c after -b unsets -b flag
while (my_b) { dosomething_with(my_b->data); my_b = my_b->link; }
while (my_b) dosomething_with(llist_pop(&my_b));
if (my_b) // but llist is stored if -b is specified
free_llist(my_b);
if (verbose_level) printf("verbose level is %d\n", verbose_level);

10
networking/traceroute.c
View File

@ -1001,17 +1001,11 @@ int traceroute_main(int argc, char **argv)
#if ENABLE_FEATURE_TRACEROUTE_SOURCE_ROUTE
if (source_route_list) {
llist_t *l_sr;
l_sr = source_route_list;
while (l_sr) {
while (source_route_list) {
if (lsrr >= NGATEWAYS)
bb_error_msg_and_die("no more than %d gateways", NGATEWAYS);
getaddr(gwlist + lsrr, l_sr->data);
getaddr(gwlist + lsrr, llist_pop(&source_route_list));
++lsrr;
l_sr = l_sr->link;
free(source_route_list);
source_route_list = l_sr;
}
optlen = (lsrr + 1) * sizeof(gwlist[0]);
}

3
networking/udhcp/dhcpc.c
View File

@ -259,12 +259,11 @@ int udhcpc_main(int argc ATTRIBUTE_UNUSED, char **argv)
if (opt & OPT_o)
client_config.no_default_options = 1;
while (list_O) {
int n = index_in_strings(dhcp_option_strings, list_O->data);
int n = index_in_strings(dhcp_option_strings, llist_pop(&list_O));
if (n < 0)
bb_error_msg_and_die("unknown option '%s'", list_O->data);
n = dhcp_options[n].code;
client_config.opt_mask[n >> 3] |= 1 << (n & 7);
list_O = list_O->link;
}
if (read_interface(client_config.interface, &client_config.ifindex,

3
networking/wget.c
View File

@ -469,8 +469,7 @@ int wget_main(int argc ATTRIBUTE_UNUSED, char **argv)
}
extra_headers = cp = xmalloc(size);
while (headers_llist) {
cp += sprintf(cp, "%s\r\n", headers_llist->data);
headers_llist = headers_llist->link;
cp += sprintf(cp, "%s\r\n", (char*)llist_pop(&headers_llist));
}
}
#endif

3
procps/ps.c
View File

@ -443,8 +443,7 @@ int ps_main(int argc ATTRIBUTE_UNUSED, char **argv)
USE_SELINUX(opt =) getopt32(argv, "Zo:aAdefl", &opt_o);
if (opt_o) {
do {
parse_o(opt_o->data);
opt_o = opt_o->link;
parse_o(llist_pop(&opt_o));
} while (opt_o);
} else {
/* Below: parse_o() needs char*, NOT const char*... */

3
util-linux/getopt.c
View File

@ -329,8 +329,7 @@ int getopt_main(int argc, char **argv)
&optstr, &name, &s_arg, &l_arg);
/* Effectuate the read options for the applet itself */
while (l_arg) {
long_options = add_long_options(long_options, l_arg->data);
l_arg = l_arg->link;
long_options = add_long_options(long_options, llist_pop(&l_arg));
}
#endif