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support for listing thread ids (useful with iotop)

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This commit is contained in:
Roberto Polli 2013-03-18 11:58:47 +01:00
parent 7f15f07b3f
commit aa5a19620b
2 changed files with 53 additions and 2 deletions
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7
pgrep.1
View File

@ -122,6 +122,13 @@ context. In
.BR pkill 's
context the short option is disabled to avoid accidental usage of the option.
.TP
\fB\-w\fR, \fB\-\-lightweight\fR\fR
Shows all thread ids instead of pids in
.BR pgrep 's
context. In
.BR pkill 's
context this option is disabled.
.TP
\fB\-x\fR, \fB\-\-exact\fR\fR
Only match processes whose names (or command line if \-f is specified)
.B exactly

48
pgrep.c
View File

@ -3,6 +3,7 @@
*
* Copyright 2000 Kjetil Torgrim Homme <kjetilho@ifi.uio.no>
* Changes by Albert Cahalan, 2002,2006.
* Changes by Roberto Polli <rpolli@babel.it>, 2012.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -74,6 +75,7 @@ static int opt_signal = SIGTERM;
static int opt_lock = 0;
static int opt_case = 0;
static int opt_echo = 0;
static int opt_threads = 0;
static const char *opt_delim = "\n";
static struct el *opt_pgrp = NULL;
@ -98,7 +100,9 @@ static int __attribute__ ((__noreturn__)) usage(int opt)
if (i_am_pkill == 0) {
fputs(_(" -d, --delimiter <string> specify output delimiter\n"
" -l, --list-name list PID and process name\n"
" -v, --inverse negates the matching\n"), fp);
" -v, --inverse negates the matching\n"
" -w, --lightweight list all TID\n"
), fp);
}
if (i_am_pkill == 1) {
fputs(_(" -<sig>, --signal <sig> signal to send (either number or name)\n"
@ -546,8 +550,44 @@ static struct el * select_procs (int *num)
} else {
xerrx(EXIT_FAILURE, _("internal error"));
}
// pkill does not need subtasks!
// this control is still done at
// argparse time, but a further
// control is free
if (opt_threads && !i_am_pkill) {
proc_t subtask;
memset(&subtask, 0, sizeof (subtask));
while (readtask(ptp, &task, &subtask)){
// don't add redundand tasks
if (task.XXXID == subtask.XXXID)
continue;
// eventually grow output buffer
if (matches == size) {
size = size * 5 / 4 + 4;
list = realloc(list, size * sizeof *list);
if (list == NULL)
exit (EXIT_FATAL);
}
if (opt_long) {
list[matches].str = xstrdup (cmdoutput);
list[matches++].num = subtask.XXXID;
} else {
list[matches++].num = subtask.XXXID;
}
memset(&subtask, 0, sizeof (subtask));
}
}
}
memset (&task, 0, sizeof (task));
}
closeproc (ptp);
@ -601,6 +641,7 @@ static void parse_opts (int argc, char **argv)
{"euid", required_argument, NULL, 'u'},
{"uid", required_argument, NULL, 'U'},
{"inverse", no_argument, NULL, 'v'},
{"lightweight", no_argument, NULL, 'w'},
{"exact", no_argument, NULL, 'x'},
{"pidfile", required_argument, NULL, 'F'},
{"logpidfile", no_argument, NULL, 'L'},
@ -620,7 +661,7 @@ static void parse_opts (int argc, char **argv)
strcat (opts, "e");
} else {
/* These options are for pgrep only */
strcat (opts, "lad:v");
strcat (opts, "lad:vw");
}
strcat (opts, "LF:cfnoxP:g:s:u:U:G:t:?Vh");
@ -742,6 +783,9 @@ static void parse_opts (int argc, char **argv)
usage (opt);
opt_negate = 1;
break;
case 'w': // Linux: show threads (lightweight process) too
opt_threads = 1;
break;
/* OpenBSD -x, being broken, does a plain string */
case 'x': /* Solaris: use ^(regexp)$ in place of regexp (FreeBSD too) */
opt_exact = 1;