db_ps.c revision 304905
19769Spsandoz/*- 29769Spsandoz * Copyright (c) 1993 The Regents of the University of California. 39769Spsandoz * All rights reserved. 49769Spsandoz * 59769Spsandoz * Redistribution and use in source and binary forms, with or without 69769Spsandoz * modification, are permitted provided that the following conditions 79769Spsandoz * are met: 89769Spsandoz * 1. Redistributions of source code must retain the above copyright 99769Spsandoz * notice, this list of conditions and the following disclaimer. 109769Spsandoz * 2. Redistributions in binary form must reproduce the above copyright 119769Spsandoz * notice, this list of conditions and the following disclaimer in the 129769Spsandoz * documentation and/or other materials provided with the distribution. 139769Spsandoz * 4. Neither the name of the University nor the names of its contributors 149769Spsandoz * may be used to endorse or promote products derived from this software 159769Spsandoz * without specific prior written permission. 169769Spsandoz * 179769Spsandoz * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 189769Spsandoz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 199769Spsandoz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 209769Spsandoz * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 219769Spsandoz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 229769Spsandoz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 239769Spsandoz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 249769Spsandoz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 259769Spsandoz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 269769Spsandoz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 279769Spsandoz * SUCH DAMAGE. 289769Spsandoz */ 299769Spsandoz 309769Spsandoz#include <sys/cdefs.h> 319769Spsandoz__FBSDID("$FreeBSD: stable/10/sys/ddb/db_ps.c 304905 2016-08-27 11:45:05Z kib $"); 329769Spsandoz 3310551Schegar#include <sys/param.h> 349769Spsandoz#include <sys/cons.h> 359769Spsandoz#include <sys/jail.h> 369769Spsandoz#include <sys/kdb.h> 3710551Schegar#include <sys/proc.h> 389769Spsandoz#include <sys/sysent.h> 399769Spsandoz#include <sys/systm.h> 409769Spsandoz#include <sys/_kstack_cache.h> 419769Spsandoz#include <vm/vm.h> 429769Spsandoz#include <vm/vm_param.h> 439769Spsandoz#include <vm/pmap.h> 449769Spsandoz 459769Spsandoz#include <ddb/ddb.h> 469769Spsandoz 479769Spsandozstatic void dumpthread(volatile struct proc *p, volatile struct thread *td, 489769Spsandoz int all); 499769Spsandoz/* 509769Spsandoz * At least one non-optional show-command must be implemented using 519769Spsandoz * DB_SHOW_ALL_COMMAND() so that db_show_all_cmd_set gets created. 529769Spsandoz * Here is one. 539769Spsandoz */ 549769SpsandozDB_SHOW_ALL_COMMAND(procs, db_procs_cmd) 559769Spsandoz{ 5611515Sshade db_ps(addr, have_addr, count, modif); 5711515Sshade} 5811528Spsandoz 5911515Sshade/* 6011515Sshade * Layout: 6111515Sshade * - column counts 6211515Sshade * - header 6311528Spsandoz * - single-threaded process 6411515Sshade * - multi-threaded process 6511515Sshade * - thread in a MT process 6611515Sshade * 6711515Sshade * 1 2 3 4 5 6 7 6811515Sshade * 1234567890123456789012345678901234567890123456789012345678901234567890 699769Spsandoz * pid ppid pgrp uid state wmesg wchan cmd 709769Spsandoz * <pid> <ppi> <pgi> <uid> <stat> < wmesg > < wchan > <name> 719769Spsandoz * <pid> <ppi> <pgi> <uid> <stat> (threaded) <command> 729769Spsandoz * <tid > <stat> < wmesg > < wchan > <name> 739769Spsandoz * 749769Spsandoz * For machines with 64-bit pointers, we expand the wchan field 8 more 759769Spsandoz * characters. 769769Spsandoz */ 779769Spsandozvoid 789769Spsandozdb_ps(db_expr_t addr, boolean_t hasaddr, db_expr_t count, char *modif) 799769Spsandoz{ 809769Spsandoz volatile struct proc *p, *pp; 819769Spsandoz volatile struct thread *td; 8211515Sshade struct ucred *cred; 8311515Sshade struct pgrp *pgrp; 8411515Sshade char state[9]; 859769Spsandoz int np, rflag, sflag, dflag, lflag, wflag; 869769Spsandoz 8711515Sshade np = nprocs; 8811515Sshade 8911515Sshade if (!LIST_EMPTY(&allproc)) 909769Spsandoz p = LIST_FIRST(&allproc); 919769Spsandoz else 9211515Sshade p = &proc0; 9311515Sshade 9411515Sshade#ifdef __LP64__ 959769Spsandoz db_printf(" pid ppid pgrp uid state wmesg wchan cmd\n"); 969769Spsandoz#else 9711515Sshade db_printf(" pid ppid pgrp uid state wmesg wchan cmd\n"); 9811515Sshade#endif 9911515Sshade while (--np >= 0 && !db_pager_quit) { 1009769Spsandoz if (p == NULL) { 1019769Spsandoz db_printf("oops, ran out of processes early!\n"); 10211515Sshade break; 10311515Sshade } 10411515Sshade pp = p->p_pptr; 1059769Spsandoz if (pp == NULL) 1069769Spsandoz pp = p; 1079769Spsandoz 1089769Spsandoz cred = p->p_ucred; 1099769Spsandoz pgrp = p->p_pgrp; 1109769Spsandoz db_printf("%5d %5d %5d %5d ", p->p_pid, pp->p_pid, 1119769Spsandoz pgrp != NULL ? pgrp->pg_id : 0, 1129769Spsandoz cred != NULL ? cred->cr_ruid : 0); 1139769Spsandoz 1149769Spsandoz /* Determine our primary process state. */ 1159769Spsandoz switch (p->p_state) { 1169769Spsandoz case PRS_NORMAL: 1179769Spsandoz if (P_SHOULDSTOP(p)) 1189769Spsandoz state[0] = 'T'; 1199769Spsandoz else { 1209769Spsandoz /* 1219769Spsandoz * One of D, L, R, S, W. For a 1229769Spsandoz * multithreaded process we will use 1239769Spsandoz * the state of the thread with the 1249769Spsandoz * highest precedence. The 1259769Spsandoz * precendence order from high to low 12610551Schegar * is R, L, D, S, W. If no thread is 1279769Spsandoz * in a sane state we use '?' for our 1289769Spsandoz * primary state. 1299769Spsandoz */ 1309769Spsandoz rflag = sflag = dflag = lflag = wflag = 0; 13110551Schegar FOREACH_THREAD_IN_PROC(p, td) { 13210551Schegar if (td->td_state == TDS_RUNNING || 1339769Spsandoz td->td_state == TDS_RUNQ || 13410551Schegar td->td_state == TDS_CAN_RUN) 135 rflag++; 136 if (TD_ON_LOCK(td)) 137 lflag++; 138 if (TD_IS_SLEEPING(td)) { 139 if (!(td->td_flags & TDF_SINTR)) 140 dflag++; 141 else 142 sflag++; 143 } 144 if (TD_AWAITING_INTR(td)) 145 wflag++; 146 } 147 if (rflag) 148 state[0] = 'R'; 149 else if (lflag) 150 state[0] = 'L'; 151 else if (dflag) 152 state[0] = 'D'; 153 else if (sflag) 154 state[0] = 'S'; 155 else if (wflag) 156 state[0] = 'W'; 157 else 158 state[0] = '?'; 159 } 160 break; 161 case PRS_NEW: 162 state[0] = 'N'; 163 break; 164 case PRS_ZOMBIE: 165 state[0] = 'Z'; 166 break; 167 default: 168 state[0] = 'U'; 169 break; 170 } 171 state[1] = '\0'; 172 173 /* Additional process state flags. */ 174 if (!(p->p_flag & P_INMEM)) 175 strlcat(state, "W", sizeof(state)); 176 if (p->p_flag & P_TRACED) 177 strlcat(state, "X", sizeof(state)); 178 if (p->p_flag & P_WEXIT && p->p_state != PRS_ZOMBIE) 179 strlcat(state, "E", sizeof(state)); 180 if (p->p_flag & P_PPWAIT) 181 strlcat(state, "V", sizeof(state)); 182 if (p->p_flag & P_SYSTEM || p->p_lock > 0) 183 strlcat(state, "L", sizeof(state)); 184 if (p->p_pgrp != NULL && p->p_session != NULL && 185 SESS_LEADER(p)) 186 strlcat(state, "s", sizeof(state)); 187 /* Cheated here and didn't compare pgid's. */ 188 if (p->p_flag & P_CONTROLT) 189 strlcat(state, "+", sizeof(state)); 190 if (cred != NULL && jailed(cred)) 191 strlcat(state, "J", sizeof(state)); 192 db_printf(" %-6.6s ", state); 193 if (p->p_flag & P_HADTHREADS) { 194#ifdef __LP64__ 195 db_printf(" (threaded) "); 196#else 197 db_printf(" (threaded) "); 198#endif 199 if (p->p_flag & P_SYSTEM) 200 db_printf("["); 201 db_printf("%s", p->p_comm); 202 if (p->p_flag & P_SYSTEM) 203 db_printf("]"); 204 db_printf("\n"); 205 } 206 FOREACH_THREAD_IN_PROC(p, td) { 207 dumpthread(p, td, p->p_flag & P_HADTHREADS); 208 if (db_pager_quit) 209 break; 210 } 211 212 p = LIST_NEXT(p, p_list); 213 if (p == NULL && np > 0) 214 p = LIST_FIRST(&zombproc); 215 } 216} 217 218static void 219dumpthread(volatile struct proc *p, volatile struct thread *td, int all) 220{ 221 char state[9], wprefix; 222 const char *wmesg; 223 void *wchan; 224 225 if (all) { 226 db_printf("%6d ", td->td_tid); 227 switch (td->td_state) { 228 case TDS_RUNNING: 229 snprintf(state, sizeof(state), "Run"); 230 break; 231 case TDS_RUNQ: 232 snprintf(state, sizeof(state), "RunQ"); 233 break; 234 case TDS_CAN_RUN: 235 snprintf(state, sizeof(state), "CanRun"); 236 break; 237 case TDS_INACTIVE: 238 snprintf(state, sizeof(state), "Inactv"); 239 break; 240 case TDS_INHIBITED: 241 state[0] = '\0'; 242 if (TD_ON_LOCK(td)) 243 strlcat(state, "L", sizeof(state)); 244 if (TD_IS_SLEEPING(td)) { 245 if (td->td_flags & TDF_SINTR) 246 strlcat(state, "S", sizeof(state)); 247 else 248 strlcat(state, "D", sizeof(state)); 249 } 250 if (TD_IS_SWAPPED(td)) 251 strlcat(state, "W", sizeof(state)); 252 if (TD_AWAITING_INTR(td)) 253 strlcat(state, "I", sizeof(state)); 254 if (TD_IS_SUSPENDED(td)) 255 strlcat(state, "s", sizeof(state)); 256 if (state[0] != '\0') 257 break; 258 default: 259 snprintf(state, sizeof(state), "???"); 260 } 261 db_printf(" %-6.6s ", state); 262 } 263 wprefix = ' '; 264 if (TD_ON_LOCK(td)) { 265 wprefix = '*'; 266 wmesg = td->td_lockname; 267 wchan = td->td_blocked; 268 } else if (TD_ON_SLEEPQ(td)) { 269 wmesg = td->td_wmesg; 270 wchan = td->td_wchan; 271 } else if (TD_IS_RUNNING(td)) { 272 snprintf(state, sizeof(state), "CPU %d", td->td_oncpu); 273 wmesg = state; 274 wchan = NULL; 275 } else { 276 wmesg = ""; 277 wchan = NULL; 278 } 279 db_printf("%c%-8.8s ", wprefix, wmesg); 280 if (wchan == NULL) 281#ifdef __LP64__ 282 db_printf("%18s ", ""); 283#else 284 db_printf("%10s ", ""); 285#endif 286 else 287 db_printf("%p ", wchan); 288 if (p->p_flag & P_SYSTEM) 289 db_printf("["); 290 if (td->td_name[0] != '\0') 291 db_printf("%s", td->td_name); 292 else 293 db_printf("%s", td->td_proc->p_comm); 294 if (p->p_flag & P_SYSTEM) 295 db_printf("]"); 296 db_printf("\n"); 297} 298 299DB_SHOW_COMMAND(thread, db_show_thread) 300{ 301 struct thread *td; 302 struct lock_object *lock; 303 boolean_t comma; 304 305 /* Determine which thread to examine. */ 306 if (have_addr) 307 td = db_lookup_thread(addr, FALSE); 308 else 309 td = kdb_thread; 310 lock = (struct lock_object *)td->td_lock; 311 312 db_printf("Thread %d at %p:\n", td->td_tid, td); 313 db_printf(" proc (pid %d): %p\n", td->td_proc->p_pid, td->td_proc); 314 if (td->td_name[0] != '\0') 315 db_printf(" name: %s\n", td->td_name); 316 db_printf(" stack: %p-%p\n", (void *)td->td_kstack, 317 (void *)(td->td_kstack + td->td_kstack_pages * PAGE_SIZE - 1)); 318 db_printf(" flags: %#x ", td->td_flags); 319 db_printf(" pflags: %#x\n", td->td_pflags); 320 db_printf(" state: "); 321 switch (td->td_state) { 322 case TDS_INACTIVE: 323 db_printf("INACTIVE\n"); 324 break; 325 case TDS_CAN_RUN: 326 db_printf("CAN RUN\n"); 327 break; 328 case TDS_RUNQ: 329 db_printf("RUNQ\n"); 330 break; 331 case TDS_RUNNING: 332 db_printf("RUNNING (CPU %d)\n", td->td_oncpu); 333 break; 334 case TDS_INHIBITED: 335 db_printf("INHIBITED: {"); 336 comma = FALSE; 337 if (TD_IS_SLEEPING(td)) { 338 db_printf("SLEEPING"); 339 comma = TRUE; 340 } 341 if (TD_IS_SUSPENDED(td)) { 342 if (comma) 343 db_printf(", "); 344 db_printf("SUSPENDED"); 345 comma = TRUE; 346 } 347 if (TD_IS_SWAPPED(td)) { 348 if (comma) 349 db_printf(", "); 350 db_printf("SWAPPED"); 351 comma = TRUE; 352 } 353 if (TD_ON_LOCK(td)) { 354 if (comma) 355 db_printf(", "); 356 db_printf("LOCK"); 357 comma = TRUE; 358 } 359 if (TD_AWAITING_INTR(td)) { 360 if (comma) 361 db_printf(", "); 362 db_printf("IWAIT"); 363 } 364 db_printf("}\n"); 365 break; 366 default: 367 db_printf("??? (%#x)\n", td->td_state); 368 break; 369 } 370 if (TD_ON_LOCK(td)) 371 db_printf(" lock: %s turnstile: %p\n", td->td_lockname, 372 td->td_blocked); 373 if (TD_ON_SLEEPQ(td)) 374 db_printf( 375 " wmesg: %s wchan: %p sleeptimo %lx. %jx (curr %lx. %jx)\n", 376 td->td_wmesg, td->td_wchan, 377 (long)sbttobt(td->td_sleeptimo).sec, 378 (uintmax_t)sbttobt(td->td_sleeptimo).frac, 379 (long)sbttobt(sbinuptime()).sec, 380 (uintmax_t)sbttobt(sbinuptime()).frac); 381 db_printf(" priority: %d\n", td->td_priority); 382 db_printf(" container lock: %s (%p)\n", lock->lo_name, lock); 383} 384 385DB_SHOW_COMMAND(proc, db_show_proc) 386{ 387 struct thread *td; 388 struct proc *p; 389 int i; 390 391 /* Determine which process to examine. */ 392 if (have_addr) 393 p = db_lookup_proc(addr); 394 else 395 p = kdb_thread->td_proc; 396 397 db_printf("Process %d (%s) at %p:\n", p->p_pid, p->p_comm, p); 398 db_printf(" state: "); 399 switch (p->p_state) { 400 case PRS_NEW: 401 db_printf("NEW\n"); 402 break; 403 case PRS_NORMAL: 404 db_printf("NORMAL\n"); 405 break; 406 case PRS_ZOMBIE: 407 db_printf("ZOMBIE\n"); 408 break; 409 default: 410 db_printf("??? (%#x)\n", p->p_state); 411 } 412 if (p->p_ucred != NULL) { 413 db_printf(" uid: %d gids: ", p->p_ucred->cr_uid); 414 for (i = 0; i < p->p_ucred->cr_ngroups; i++) { 415 db_printf("%d", p->p_ucred->cr_groups[i]); 416 if (i < (p->p_ucred->cr_ngroups - 1)) 417 db_printf(", "); 418 } 419 db_printf("\n"); 420 } 421 if (p->p_pptr != NULL) 422 db_printf(" parent: pid %d at %p\n", p->p_pptr->p_pid, 423 p->p_pptr); 424 if (p->p_leader != NULL && p->p_leader != p) 425 db_printf(" leader: pid %d at %p\n", p->p_leader->p_pid, 426 p->p_leader); 427 if (p->p_sysent != NULL) 428 db_printf(" ABI: %s\n", p->p_sysent->sv_name); 429 if (p->p_args != NULL) 430 db_printf(" arguments: %.*s\n", (int)p->p_args->ar_length, 431 p->p_args->ar_args); 432 db_printf(" threads: %d\n", p->p_numthreads); 433 FOREACH_THREAD_IN_PROC(p, td) { 434 dumpthread(p, td, 1); 435 if (db_pager_quit) 436 break; 437 } 438} 439 440void 441db_findstack_cmd(db_expr_t addr, boolean_t have_addr, 442 db_expr_t dummy3 __unused, char *dummy4 __unused) 443{ 444 struct proc *p; 445 struct thread *td; 446 struct kstack_cache_entry *ks_ce; 447 vm_offset_t saddr; 448 449 if (have_addr) 450 saddr = addr; 451 else { 452 db_printf("Usage: findstack <address>\n"); 453 return; 454 } 455 456 FOREACH_PROC_IN_SYSTEM(p) { 457 FOREACH_THREAD_IN_PROC(p, td) { 458 if (td->td_kstack <= saddr && saddr < td->td_kstack + 459 PAGE_SIZE * td->td_kstack_pages) { 460 db_printf("Thread %p\n", td); 461 return; 462 } 463 } 464 } 465 466 for (ks_ce = kstack_cache; ks_ce != NULL; 467 ks_ce = ks_ce->next_ks_entry) { 468 if ((vm_offset_t)ks_ce <= saddr && saddr < (vm_offset_t)ks_ce + 469 PAGE_SIZE * KSTACK_PAGES) { 470 db_printf("Cached stack %p\n", ks_ce); 471 return; 472 } 473 } 474} 475