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/*
* px - search for processes and print top(1)-like status
*
* To the extent possible under law, Leah Neukirchen <leah@vuxu.org>
* has waived all copyright and related or neighboring rights to this work.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
#include <sys/auxv.h>
#include <sys/sysinfo.h>
#include <ctype.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <proc/readproc.h>
static void
print_human(intmax_t i)
{
double d = i;
const char *u = "\0\0K\0M\0G\0T\0P\0E\0Z\0Y\0";
while (d >= 1024) {
u += 2;
d /= 1024.0;
}
if (!*u)
printf("%5.0f", d);
else if (d < 10.0)
printf("%4.1f%s", d, u);
else
printf("%4.0f%s", d, u);
}
static void
print_time(time_t t) {
unsigned int dd, hh, mm, ss;
ss = t % 60; t /= 60;
mm = t % 60; t /= 60;
hh = t % 24; t /= 24;
dd = t;
if (dd)
printf(" %3ud%02uh", dd, hh);
else if (hh)
printf(" %2uh%02um", hh, mm);
else
printf(" %2u:%02u", mm, ss);
}
int
main(int argc, char *argv[])
{
int clktck;
if ((clktck = getauxval(AT_CLKTCK)) <= 0)
if ((clktck = sysconf(_SC_CLK_TCK)) <= 0)
clktck = 100; /* educated guess */
struct sysinfo si;
sysinfo(&si);
time_t now = time(0);
proc_t **result;
result = readproctab(PROC_FILLCOM | PROC_FILLUSR |
PROC_FILLSTAT | PROC_FILLSTATUS);
int matched = 0;
for (; *result; result++) {
proc_t *p = *result;
if (argc > 1) {
for (int i = 1; i < argc; i++) {
for (size_t j = 0; j < strlen(argv[i]); j++) {
if (!isdigit(argv[i][j]))
goto word;
}
if (p->tid == atoi(argv[i]))
goto match;
else
continue;
word:
if (strstr(p->cmd, argv[i]))
goto match;
}
continue;
match:
matched++;
} else {
matched++;
}
if (matched == 1)
printf(" PID USER %%CPU VSZ RSS START ELAPSED CPUTIME COMMAND\n");
printf("%5d", p->tid);
printf(" %-8.8s", p->euser);
double pcpu = 0;
time_t seconds, cputime;
cputime = (p->utime + p->stime) / clktck;
seconds = si.uptime - p->start_time / clktck;
if (seconds)
pcpu = (cputime * 100.0) / seconds;
printf(" %4.1f", pcpu);
print_human(p->vm_size*1024);
print_human(p->vm_rss*1024);
char buf[7];
time_t start;
time_t seconds_ago;
start = (now - si.uptime) + p->start_time / clktck;
seconds_ago = now - start;
if (seconds_ago < 0)
seconds_ago = 0;
if (seconds_ago > 3600*24)
strftime(buf, sizeof buf, "%b%d", localtime(&start));
else
strftime(buf, sizeof buf, "%H:%M", localtime(&start));
printf(" %s", buf);
print_time(seconds_ago);
print_time(cputime);
if (p->cmdline)
for (int i = 0; p->cmdline[i]; i++)
printf(" %s", p->cmdline[i]);
else // kernel threads
printf(" [%s]", p->cmd);
if (p->state == 'Z')
printf(" <defunct>");
printf("\n");
}
exit(!matched);
}
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