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top: code shrink

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function                                             old     new   delta
display_process_list                                1186    1168     -18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2022-05-10 14:04:34 +02:00
parent 69f82e305b
commit 1099a27696
1 changed files with 9 additions and 11 deletions
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20
procps/top.c
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@ -690,7 +690,7 @@ static NOINLINE void display_process_list(int lines_rem, int scr_width)
s = top + G_scroll_ofs;
while (--lines_rem >= 0) {
int n;
char *pp;
char *ppu;
char ppubuf[sizeof(int)*3 * 2 + 12];
char vsz_str_buf[8];
unsigned col;
@ -703,37 +703,35 @@ static NOINLINE void display_process_list(int lines_rem, int scr_width)
smart_ulltoa5(s->vsz, vsz_str_buf, " mgtpezy");
/* PID PPID USER STAT VSZ %VSZ [%CPU] COMMAND */
n = sprintf(ppubuf, "%5u %5u %-8.8s", s->pid, s->ppid, get_cached_username(s->uid));
ppu = ppubuf;
if (n != 6+6+8) {
/* Format PID PPID USER part into 6+6+8 chars:
* shrink PID/PPID if possible, then truncate USER
*/
char *p;
pp = ppubuf;
if (*pp == ' ') {
char *p, *pp;
if (*ppu == ' ') {
do {
pp++, n--;
ppu++, n--;
if (n == 6+6+8)
goto shortened;
} while (*pp == ' ');
overlapping_strcpy(ppubuf, pp); /* shrink PID */
} while (*ppu == ' ');
}
pp = p = skip_non_whitespace(ppubuf) + 1;
pp = p = skip_non_whitespace(ppu) + 1;
if (*p == ' ') {
do
p++, n--;
while (n != 6+6+8 && *p == ' ');
overlapping_strcpy(pp, p); /* shrink PPID */
}
ppubuf[6+6+8] = '\0'; /* truncate USER */
ppu[6+6+8] = '\0'; /* truncate USER */
}
pp = ppubuf;
shortened:
col = snprintf(line_buf, scr_width,
"\n" "%s %s %.5s" FMT
IF_FEATURE_TOP_SMP_PROCESS(" %3d")
IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE(FMT)
" ",
pp,
ppu,
s->state, vsz_str_buf,
SHOW_STAT(pmem)
IF_FEATURE_TOP_SMP_PROCESS(, s->last_seen_on_cpu)