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Make smart_ulltoa return pointer to end (allows for code shink in callers)

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function                                             old     new   delta
smart_ulltoa5                                        405     408      +3
smart_ulltoa4                                        273     276      +3
list_table                                          1113    1114      +1
scale                                                 36      34      -2
put_lu                                                55      53      -2
ulltoa6_and_space                                     19      14      -5
powertop_main                                       1470    1461      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2013-09-06 12:53:14 +02:00
parent d6ae4fb446
commit a407cf74cc
7 changed files with 14 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/libbb.h
View File

@ -815,8 +815,8 @@ char *itoa(int n) FAST_FUNC;
char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC;
char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC;
/* Intelligent formatters of bignums */
void smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale) FAST_FUNC;
void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC;
char *smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale) FAST_FUNC;
char *smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC;
/* If block_size == 0, display size without fractional part,
* else display (size * block_size) with one decimal digit.
* If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...),

6
libbb/human_readable.c
View File

@ -94,7 +94,7 @@ const char* FAST_FUNC make_human_readable_str(unsigned long long val,
/* Convert unsigned long long value into compact 5-char representation.
* String is not terminated (buf[5] is untouched) */
void FAST_FUNC smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale)
char* FAST_FUNC smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale)
{
const char *fmt;
char c;
@ -145,12 +145,13 @@ void FAST_FUNC smart_ulltoa5(unsigned long long ul, char buf[5], const char *sca
buf[3] = "0123456789"[v];
buf[4] = scale[idx]; /* typically scale = " kmgt..." */
}
return buf + 5;
}
/* Convert unsigned long long value into compact 4-char
* representation. Examples: "1234", "1.2k", " 27M", "123T"
* String is not terminated (buf[4] is untouched) */
void FAST_FUNC smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale)
char* FAST_FUNC smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale)
{
const char *fmt;
char c;
@ -194,4 +195,5 @@ void FAST_FUNC smart_ulltoa4(unsigned long long ul, char buf[4], const char *sca
buf[2] = "0123456789"[v];
buf[3] = scale[idx]; /* typically scale = " kmgt..." */
}
return buf + 4;
}

3
procps/nmeter.c
View File

@ -333,8 +333,7 @@ static void scale(ullong ul)
char buf[5];
/* see http://en.wikipedia.org/wiki/Tera */
smart_ulltoa4(ul, buf, " kmgtpezy");
buf[4] = '\0';
smart_ulltoa4(ul, buf, " kmgtpezy")[0] = '\0';
put(buf);
}

3
procps/powertop.c
View File

@ -627,7 +627,6 @@ static void show_timerstats(void)
int i, n = 0;
char strbuf6[6];
strbuf6[5] = '\0';
puts("\nTop causes for wakeups:");
for (i = 0; i < G.lines_cnt; i++) {
if ((G.lines[i].count > 0 /*|| G.lines[i].disk_count > 0*/)
@ -639,7 +638,7 @@ static void show_timerstats(void)
/*char c = ' ';
if (G.lines[i].disk_count)
c = 'D';*/
smart_ulltoa5(G.lines[i].count, strbuf6, " KMGTPEZY");
smart_ulltoa5(G.lines[i].count, strbuf6, " KMGTPEZY")[0] = '\0';
printf(/*" %5.1f%% (%s)%c %s\n"*/
" %5.1f%% (%s) %s\n",
G.lines[i].count * 100.0 / G.lines_cumulative_count,

9
procps/ps.c
View File

@ -299,8 +299,7 @@ static void put_lu(char *buf, int size, unsigned long u)
char buf4[5];
/* see http://en.wikipedia.org/wiki/Tera */
smart_ulltoa4(u, buf4, " mgtpezy");
buf4[4] = '\0';
smart_ulltoa4(u, buf4, " mgtpezy")[0] = '\0';
sprintf(buf, "%.*s", size, buf4);
}
@ -740,8 +739,7 @@ int ps_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
#endif
{
char buf6[6];
smart_ulltoa5(p->vsz, buf6, " mgtpezy");
buf6[5] = '\0';
smart_ulltoa5(p->vsz, buf6, " mgtpezy")[0] = '\0';
#if ENABLE_FEATURE_PS_LONG
if (opts & OPT_l) {
char bufr[6], stime_str[6];
@ -752,8 +750,7 @@ int ps_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
time_t start = now - elapsed;
struct tm *tm = localtime(&start);
smart_ulltoa5(p->rss, bufr, " mgtpezy");
bufr[5] = '\0';
smart_ulltoa5(p->rss, bufr, " mgtpezy")[0] = '\0';
if (p->tty_major == 136)
/* It should be pts/N, not ptsN, but N > 9

3
procps/top.c
View File

@ -847,8 +847,7 @@ static void display_topmem_header(int scr_width, int *lines_rem_p)
static void ulltoa6_and_space(unsigned long long ul, char buf[6])
{
/* see http://en.wikipedia.org/wiki/Tera */
smart_ulltoa5(ul, buf, " mgtpezy");
buf[5] = ' ';
smart_ulltoa5(ul, buf, " mgtpezy")[0] = '\0';
}
static NOINLINE void display_topmem_process_list(int lines_rem, int scr_width)

6
util-linux/fdisk_gpt.c
View File

@ -93,9 +93,7 @@ gpt_list_table(int xtra UNUSED_PARAM)
int i;
char numstr6[6];
numstr6[5] = '\0';
smart_ulltoa5(total_number_of_sectors * sector_size, numstr6, " KMGTPEZY");
smart_ulltoa5(total_number_of_sectors * sector_size, numstr6, " KMGTPEZY")[0] = '\0';
printf("Disk %s: %llu sectors, %s\n", disk_device,
(unsigned long long)total_number_of_sectors,
numstr6);
@ -113,7 +111,7 @@ gpt_list_table(int xtra UNUSED_PARAM)
gpt_partition *p = gpt_part(i);
if (p->lba_start) {
smart_ulltoa5((1 + SWAP_LE64(p->lba_end) - SWAP_LE64(p->lba_start)) * sector_size,
numstr6, " KMGTPEZY");
numstr6, " KMGTPEZY")[0] = '\0';
printf("%4u %15llu %15llu %11s %04x ",
i + 1,
(unsigned long long)SWAP_LE64(p->lba_start),