sys/ddb/db_ps.c

   1 /*-
   2  * Copyright (c) 1993 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/lock.h>
  36 #include <sys/mutex.h>
  37 #include <sys/proc.h>
  38 #include <sys/cons.h>
  39 #include <vm/vm.h>
  40 #include <vm/vm_param.h>
  41 #include <vm/pmap.h>
  42
  43 #include <ddb/ddb.h>
  44
  45 static void     dumpthread(volatile struct proc *p, volatile struct thread *td);
  46
  47 void
  48 db_ps(dummy1, dummy2, dummy3, dummy4)
  49         db_expr_t       dummy1;
  50         boolean_t       dummy2;
  51         db_expr_t       dummy3;
  52         char *          dummy4;
  53 {
  54         volatile struct proc *p, *pp;
  55         volatile struct thread *td;
  56         char *state;
  57         int np, quit;
  58
  59         np = nprocs;
  60         quit = 0;
  61
  62         /* sx_slock(&allproc_lock); */
  63         if (!LIST_EMPTY(&allproc))
  64                 p = LIST_FIRST(&allproc);
  65         else
  66                 p = &proc0;
  67
  68         db_setup_paging(db_simple_pager, &quit, db_lines_per_page);
  69         db_printf("  pid   proc     uid  ppid  pgrp  flag   stat  wmesg    wchan  cmd\n");
  70         while (--np >= 0 && !quit) {
  71                 if (p == NULL) {
  72                         printf("oops, ran out of processes early!\n");
  73                         break;
  74                 }
  75                 /* PROC_LOCK(p); */
  76                 pp = p->p_pptr;
  77                 if (pp == NULL)
  78                         pp = p;
  79
  80
  81                 switch(p->p_state) {
  82                 case PRS_NORMAL:
  83                         if (P_SHOULDSTOP(p))
  84                                 state = "stop";
  85                         else
  86                                 state = "";
  87                         break;
  88                 case PRS_NEW:
  89                         state = "new ";
  90                         break;
  91                 case PRS_ZOMBIE:
  92                         state = "zomb";
  93                         break;
  94                 default:
  95                         state = "Unkn";
  96                         break;
  97                 }
  98                 db_printf("%5d %8p %4d %5d %5d %07x %s",
  99                     p->p_pid, (volatile void *)p,
 100                     p->p_ucred != NULL ? p->p_ucred->cr_ruid : 0, pp->p_pid,
 101                     p->p_pgrp != NULL ? p->p_pgrp->pg_id : 0, p->p_flag,
 102                     state);
 103                 if (p->p_flag & P_HADTHREADS)
 104                         db_printf("(threaded)  %s\n", p->p_comm);
 105                 FOREACH_THREAD_IN_PROC(p, td) {
 106                         dumpthread(p, td);
 107                         if (quit)
 108                                 break;
 109                 }
 110                 /* PROC_UNLOCK(p); */
 111
 112                 p = LIST_NEXT(p, p_list);
 113                 if (p == NULL && np > 0)
 114                         p = LIST_FIRST(&zombproc);
 115         }
 116         /* sx_sunlock(&allproc_lock); */
 117 }
 118
 119 static void
 120 dumpthread(volatile struct proc *p, volatile struct thread *td)
 121 {
 122
 123         if (p->p_flag & P_HADTHREADS)
 124                 db_printf( "   thread %p ksegrp %p ", td, td->td_ksegrp);
 125         if (TD_ON_SLEEPQ(td))
 126                 db_printf("[SLPQ %s %p]", td->td_wmesg, (void *)td->td_wchan);
 127         switch (td->td_state) {
 128         case TDS_INHIBITED:
 129                 if (TD_ON_LOCK(td)) {
 130                         db_printf("[LOCK %6s %8p]",
 131                             td->td_lockname,
 132                             (void *)td->td_blocked);
 133                 }
 134                 if (TD_IS_SLEEPING(td)) {
 135                         db_printf("[SLP]");
 136                 }
 137                 if (TD_IS_SWAPPED(td)) {
 138                         db_printf("[SWAP]");
 139                 }
 140                 if (TD_IS_SUSPENDED(td)) {
 141                         db_printf("[SUSP]");
 142                 }
 143                 if (TD_AWAITING_INTR(td)) {
 144                         db_printf("[IWAIT]");
 145                 }
 146                 break;
 147         case TDS_CAN_RUN:
 148                 db_printf("[Can run]");
 149                 break;
 150         case TDS_RUNQ:
 151                 db_printf("[RUNQ]");
 152                 break;
 153         case TDS_RUNNING:
 154                 db_printf("[CPU %d]", td->td_oncpu);
 155                 break;
 156         case TDS_INACTIVE:
 157                 db_printf("[INACTIVE]");
 158                 break;
 159         default:
 160                 db_printf("[UNK: %#x]", td->td_state);
 161         }
 162         if (p->p_flag & P_HADTHREADS) {
 163 #ifdef KEF_DIDRUN
 164                 if (td->td_kse)
 165                         db_printf("[kse %p]", td->td_kse);
 166 #endif
 167                 db_printf("\n");
 168         } else
 169                 db_printf(" %s\n", p->p_comm);
 170 }