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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 <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <libproc2/pids.h>
#include <libproc2/stat.h>
int fflag;
int tflag;
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 r;
pid_t me = getpid();
time_t now = time(0);
struct stat_info *stat_info = 0;
if ((r = procps_stat_new(&stat_info)) < 0) {
fprintf(stderr, "failed to run procps_stat_new: %s\n",
strerror(-r));
exit(2);
}
time_t boot_time = STAT_GET(stat_info, STAT_SYS_TIME_OF_BOOT, ul_int);
procps_stat_unref(&stat_info);
struct pids_info *Pids_info = 0;
enum pids_item items[] = {
PIDS_CMD,
PIDS_CMDLINE_V,
PIDS_ID_EUSER,
PIDS_ID_TID,
PIDS_STATE,
PIDS_TIME_ALL,
PIDS_TIME_ELAPSED,
PIDS_TIME_START,
PIDS_TTY_NAME,
PIDS_UTILIZATION,
PIDS_VM_RSS,
PIDS_VM_SIZE,
};
enum rel_items {
EU_CMD,
EU_CMDLINE_V,
EU_ID_EUSER,
EU_ID_TID,
EU_STATE,
EU_TIME_ALL,
EU_TIME_ELAPSED,
EU_TIME_START,
EU_TTY_NAME,
EU_UTILIZATION,
EU_VM_RSS,
EU_VM_SIZE,
};
if ((r = procps_pids_new(&Pids_info, items, 12)) < 0) {
fprintf(stderr, "failed to run procps_pids_new: %s\n",
strerror(-r));
exit(2);
}
int matched = 0;
int c;
while ((c = getopt(argc, argv, "tf")) != -1)
switch (c) {
case 't': tflag = 1; break;
case 'f': fflag = 1; break;
default:
fprintf(stderr,
"Usage: %s [-f] [PATTERN...]\n", argv[0]);
exit(2);
}
struct pids_fetch *reap = procps_pids_reap(Pids_info,
tflag == 0 ? PIDS_FETCH_TASKS_ONLY : PIDS_FETCH_THREADS_TOO);
if (!reap) {
fprintf(stderr, "failed to run procps_pids_reap: %s\n",
strerror(errno));
exit(2);
}
int total_procs = reap->counts->total;
for (int i = 0; i < total_procs; i++) {
#define PIDS_GETCHR(e) PIDS_VAL(EU_ ## e, s_ch, reap->stacks[i], Pids_info)
#define PIDS_GETINT(e) PIDS_VAL(EU_ ## e, s_int, reap->stacks[i], Pids_info)
#define PIDS_GETUNT(e) PIDS_VAL(EU_ ## e, u_int, reap->stacks[i], Pids_info)
#define PIDS_GETULINT(e) PIDS_VAL(EU_ ## e, ul_int, reap->stacks[i], Pids_info)
#define PIDS_GETREAL(e) PIDS_VAL(EU_ ## e, real, reap->stacks[i], Pids_info)
#define PIDS_GETSTR(e) PIDS_VAL(EU_ ## e, str, reap->stacks[i], Pids_info)
#define PIDS_GETSTR_V(e) PIDS_VAL(EU_ ## e, strv, reap->stacks[i], Pids_info)
if (argc <= optind)
goto match;
for (int j = optind; j < argc; j++) {
for (size_t k = 0; k < strlen(argv[j]); k++)
if (!isdigit(argv[j][k]))
goto word;
if (PIDS_GETINT(ID_TID) == atoi(argv[j]))
goto match;
else
continue;
word:
if (fflag && PIDS_GETSTR_V(CMDLINE_V)) {
if (PIDS_GETINT(ID_TID) == me)
continue; /* we'd always match ourself */
for (int k = 0; PIDS_GETSTR_V(CMDLINE_V)[k]; k++)
if (strstr(PIDS_GETSTR_V(CMDLINE_V)[k], argv[j]))
goto match;
}
else if (strstr(PIDS_GETSTR(CMD), argv[j]))
goto match;
}
continue;
match:
matched++;
if (matched == 1)
printf(" PID USER %%CPU VSZ RSS START ELAPSED CPUTIME COMMAND\n");
printf("%5d", PIDS_GETINT(ID_TID));
printf(" %-8.8s", PIDS_GETSTR(ID_EUSER));
printf(" %4.1f", PIDS_GETREAL(UTILIZATION));
print_human(PIDS_GETULINT(VM_SIZE)*1024);
print_human(PIDS_GETULINT(VM_RSS)*1024);
char buf[7];
time_t start = boot_time + PIDS_GETREAL(TIME_START);
time_t 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(PIDS_GETREAL(TIME_ELAPSED));
print_time(PIDS_GETREAL(TIME_ALL));
if (PIDS_GETSTR_V(CMDLINE_V))
for (int j = 0; PIDS_GETSTR_V(CMDLINE_V)[j]; j++)
printf(" %s", PIDS_GETSTR_V(CMDLINE_V)[j]);
else // kernel threads
printf(" [%s]", PIDS_GETSTR(CMD));
if (PIDS_GETCHR(STATE) == 'Z')
printf(" <defunct>");
printf("\n");
}
exit(!matched);
}
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