2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1993 The Regents of the University of California.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include "opt_kstack_pages.h"
37 #include <sys/param.h>
41 #include <sys/kernel.h>
43 #include <sys/sysent.h>
44 #include <sys/systm.h>
45 #include <sys/_kstack_cache.h>
47 #include <vm/vm_param.h>
52 static void dumpthread(volatile struct proc *p, volatile struct thread *td,
55 * At least one non-optional show-command must be implemented using
56 * DB_SHOW_ALL_COMMAND() so that db_show_all_cmd_set gets created.
59 DB_SHOW_ALL_COMMAND(procs, db_procs_cmd)
61 db_ps(addr, have_addr, count, modif);
68 * - single-threaded process
69 * - multi-threaded process
70 * - thread in a MT process
73 * 1234567890123456789012345678901234567890123456789012345678901234567890
74 * pid ppid pgrp uid state wmesg wchan cmd
75 * <pid> <ppi> <pgi> <uid> <stat> <wmesg> <wchan > <name>
76 * <pid> <ppi> <pgi> <uid> <stat> (threaded) <command>
77 * <tid > <stat> <wmesg> <wchan > <name>
79 * For machines with 64-bit pointers, we expand the wchan field 8 more
83 db_ps(db_expr_t addr, bool hasaddr, db_expr_t count, char *modif)
85 volatile struct proc *p, *pp;
86 volatile struct thread *td;
90 int np, rflag, sflag, dflag, lflag, wflag;
94 if (!LIST_EMPTY(&allproc))
95 p = LIST_FIRST(&allproc);
100 db_printf(" pid ppid pgrp uid state wmesg wchan cmd\n");
102 db_printf(" pid ppid pgrp uid state wmesg wchan cmd\n");
104 while (--np >= 0 && !db_pager_quit) {
106 db_printf("oops, ran out of processes early!\n");
115 db_printf("%5d %5d %5d %5d ", p->p_pid, pp->p_pid,
116 pgrp != NULL ? pgrp->pg_id : 0,
117 cred != NULL ? cred->cr_ruid : 0);
119 /* Determine our primary process state. */
120 switch (p->p_state) {
126 * One of D, L, R, S, W. For a
127 * multithreaded process we will use
128 * the state of the thread with the
129 * highest precedence. The
130 * precendence order from high to low
131 * is R, L, D, S, W. If no thread is
132 * in a sane state we use '?' for our
135 rflag = sflag = dflag = lflag = wflag = 0;
136 FOREACH_THREAD_IN_PROC(p, td) {
137 if (td->td_state == TDS_RUNNING ||
138 td->td_state == TDS_RUNQ ||
139 td->td_state == TDS_CAN_RUN)
143 if (TD_IS_SLEEPING(td)) {
144 if (!(td->td_flags & TDF_SINTR))
149 if (TD_AWAITING_INTR(td))
178 /* Additional process state flags. */
179 if (!(p->p_flag & P_INMEM))
180 strlcat(state, "W", sizeof(state));
181 if (p->p_flag & P_TRACED)
182 strlcat(state, "X", sizeof(state));
183 if (p->p_flag & P_WEXIT && p->p_state != PRS_ZOMBIE)
184 strlcat(state, "E", sizeof(state));
185 if (p->p_flag & P_PPWAIT)
186 strlcat(state, "V", sizeof(state));
187 if (p->p_flag & P_SYSTEM || p->p_lock > 0)
188 strlcat(state, "L", sizeof(state));
189 if (p->p_pgrp != NULL && p->p_session != NULL &&
191 strlcat(state, "s", sizeof(state));
192 /* Cheated here and didn't compare pgid's. */
193 if (p->p_flag & P_CONTROLT)
194 strlcat(state, "+", sizeof(state));
195 if (cred != NULL && jailed(cred))
196 strlcat(state, "J", sizeof(state));
197 db_printf(" %-6.6s ", state);
198 if (p->p_flag & P_HADTHREADS) {
200 db_printf(" (threaded) ");
202 db_printf(" (threaded) ");
204 if (p->p_flag & P_SYSTEM)
206 db_printf("%s", p->p_comm);
207 if (p->p_flag & P_SYSTEM)
211 FOREACH_THREAD_IN_PROC(p, td) {
212 dumpthread(p, td, p->p_flag & P_HADTHREADS);
217 p = LIST_NEXT(p, p_list);
218 if (p == NULL && np > 0)
219 p = LIST_FIRST(&zombproc);
224 dumpthread(volatile struct proc *p, volatile struct thread *td, int all)
226 char state[9], wprefix;
231 db_printf("%6d ", td->td_tid);
232 switch (td->td_state) {
234 snprintf(state, sizeof(state), "Run");
237 snprintf(state, sizeof(state), "RunQ");
240 snprintf(state, sizeof(state), "CanRun");
243 snprintf(state, sizeof(state), "Inactv");
248 strlcat(state, "L", sizeof(state));
249 if (TD_IS_SLEEPING(td)) {
250 if (td->td_flags & TDF_SINTR)
251 strlcat(state, "S", sizeof(state));
253 strlcat(state, "D", sizeof(state));
255 if (TD_IS_SWAPPED(td))
256 strlcat(state, "W", sizeof(state));
257 if (TD_AWAITING_INTR(td))
258 strlcat(state, "I", sizeof(state));
259 if (TD_IS_SUSPENDED(td))
260 strlcat(state, "s", sizeof(state));
261 if (state[0] != '\0')
264 snprintf(state, sizeof(state), "???");
266 db_printf(" %-6.6s ", state);
269 if (TD_ON_LOCK(td)) {
271 wmesg = td->td_lockname;
272 wchan = td->td_blocked;
273 } else if (TD_ON_SLEEPQ(td)) {
274 wmesg = td->td_wmesg;
275 wchan = td->td_wchan;
276 } else if (TD_IS_RUNNING(td)) {
277 snprintf(state, sizeof(state), "CPU %d", td->td_oncpu);
284 db_printf("%c%-7.7s ", wprefix, wmesg);
287 db_printf("%18s ", "");
289 db_printf("%10s ", "");
292 db_printf("%p ", wchan);
293 if (p->p_flag & P_SYSTEM)
295 if (td->td_name[0] != '\0')
296 db_printf("%s", td->td_name);
298 db_printf("%s", td->td_proc->p_comm);
299 if (p->p_flag & P_SYSTEM)
304 DB_SHOW_COMMAND(thread, db_show_thread)
307 struct lock_object *lock;
311 /* Determine which thread to examine. */
313 td = db_lookup_thread(addr, false);
316 lock = (struct lock_object *)td->td_lock;
318 db_printf("Thread %d at %p:\n", td->td_tid, td);
319 db_printf(" proc (pid %d): %p\n", td->td_proc->p_pid, td->td_proc);
320 if (td->td_name[0] != '\0')
321 db_printf(" name: %s\n", td->td_name);
322 db_printf(" stack: %p-%p\n", (void *)td->td_kstack,
323 (void *)(td->td_kstack + td->td_kstack_pages * PAGE_SIZE - 1));
324 db_printf(" flags: %#x ", td->td_flags);
325 db_printf(" pflags: %#x\n", td->td_pflags);
326 db_printf(" state: ");
327 switch (td->td_state) {
329 db_printf("INACTIVE\n");
332 db_printf("CAN RUN\n");
338 db_printf("RUNNING (CPU %d)\n", td->td_oncpu);
341 db_printf("INHIBITED: {");
343 if (TD_IS_SLEEPING(td)) {
344 db_printf("SLEEPING");
347 if (TD_IS_SUSPENDED(td)) {
350 db_printf("SUSPENDED");
353 if (TD_IS_SWAPPED(td)) {
356 db_printf("SWAPPED");
359 if (TD_ON_LOCK(td)) {
365 if (TD_AWAITING_INTR(td)) {
373 db_printf("??? (%#x)\n", td->td_state);
377 db_printf(" lock: %s turnstile: %p\n", td->td_lockname,
379 if (TD_ON_SLEEPQ(td))
381 " wmesg: %s wchan: %p sleeptimo %lx. %jx (curr %lx. %jx)\n",
382 td->td_wmesg, td->td_wchan,
383 (long)sbttobt(td->td_sleeptimo).sec,
384 (uintmax_t)sbttobt(td->td_sleeptimo).frac,
385 (long)sbttobt(sbinuptime()).sec,
386 (uintmax_t)sbttobt(sbinuptime()).frac);
387 db_printf(" priority: %d\n", td->td_priority);
388 db_printf(" container lock: %s (%p)\n", lock->lo_name, lock);
389 if (td->td_swvoltick != 0) {
390 delta = (u_int)ticks - (u_int)td->td_swvoltick;
391 db_printf(" last voluntary switch: %d ms ago\n",
394 if (td->td_swinvoltick != 0) {
395 delta = (u_int)ticks - (u_int)td->td_swinvoltick;
396 db_printf(" last involuntary switch: %d ms ago\n",
401 DB_SHOW_COMMAND(proc, db_show_proc)
407 /* Determine which process to examine. */
409 p = db_lookup_proc(addr);
411 p = kdb_thread->td_proc;
413 db_printf("Process %d (%s) at %p:\n", p->p_pid, p->p_comm, p);
414 db_printf(" state: ");
415 switch (p->p_state) {
420 db_printf("NORMAL\n");
423 db_printf("ZOMBIE\n");
426 db_printf("??? (%#x)\n", p->p_state);
428 if (p->p_ucred != NULL) {
429 db_printf(" uid: %d gids: ", p->p_ucred->cr_uid);
430 for (i = 0; i < p->p_ucred->cr_ngroups; i++) {
431 db_printf("%d", p->p_ucred->cr_groups[i]);
432 if (i < (p->p_ucred->cr_ngroups - 1))
437 if (p->p_pptr != NULL)
438 db_printf(" parent: pid %d at %p\n", p->p_pptr->p_pid,
440 if (p->p_leader != NULL && p->p_leader != p)
441 db_printf(" leader: pid %d at %p\n", p->p_leader->p_pid,
443 if (p->p_sysent != NULL)
444 db_printf(" ABI: %s\n", p->p_sysent->sv_name);
445 if (p->p_args != NULL) {
446 db_printf(" arguments: ");
447 for (i = 0; i < (int)p->p_args->ar_length; i++) {
448 if (p->p_args->ar_args[i] == '\0')
451 db_printf("%c", p->p_args->ar_args[i]);
455 db_printf(" threads: %d\n", p->p_numthreads);
456 FOREACH_THREAD_IN_PROC(p, td) {
457 dumpthread(p, td, 1);
464 db_findstack_cmd(db_expr_t addr, bool have_addr, db_expr_t dummy3 __unused,
465 char *dummy4 __unused)
469 struct kstack_cache_entry *ks_ce;
475 db_printf("Usage: findstack <address>\n");
479 FOREACH_PROC_IN_SYSTEM(p) {
480 FOREACH_THREAD_IN_PROC(p, td) {
481 if (td->td_kstack <= saddr && saddr < td->td_kstack +
482 PAGE_SIZE * td->td_kstack_pages) {
483 db_printf("Thread %p\n", td);
489 for (ks_ce = kstack_cache; ks_ce != NULL;
490 ks_ce = ks_ce->next_ks_entry) {
491 if ((vm_offset_t)ks_ce <= saddr && saddr < (vm_offset_t)ks_ce +
492 PAGE_SIZE * kstack_pages) {
493 db_printf("Cached stack %p\n", ks_ce);