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  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/sys/ddb/db_ps.c,v 1.20 1999/08/28 00:41:09 peter Exp $
  34  * $DragonFly: src/sys/ddb/db_ps.c,v 1.25 2008/06/29 21:38:21 dillon Exp $
  35  */
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/proc.h>
  39 #include <sys/cons.h>
  40
  41 #include <ddb/ddb.h>
  42
  43 static void db_dump_td_tokens(thread_t td);
  44
  45 void
  46 db_ps(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
  47 {
  48         int np;
  49         int cpuidx;
  50         int nl = 0;
  51         volatile struct proc *p, *pp;
  52         struct lwp *lp;
  53
  54         np = nprocs;
  55
  56         if (allproc.lh_first != NULL)
  57                 p = allproc.lh_first;
  58         else
  59                 p = &proc0;
  60         lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
  61
  62         if (db_more(&nl) < 0)
  63             return;
  64         db_printf("  pid      lwp  uid  ppid  pgrp  pflag  lflag stat  wmesg    wchan cmd\n");
  65         for (;;) {
  66                 while (lp == NULL) {
  67                         --np;
  68                         p = p->p_list.le_next;
  69                         if (p == NULL && np > 0)
  70                                 p = zombproc.lh_first;
  71                         if (p == NULL)
  72                                 break;
  73                         lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
  74                 }
  75                 /*
  76                  * XXX just take 20 for now...
  77                  */
  78                 if (db_more(&nl) < 0)
  79                         return;
  80                 if (p == NULL) {
  81                         kprintf("oops, ran out of processes early!\n");
  82                         break;
  83                 }
  84                 pp = p->p_pptr;
  85                 if (pp == NULL)
  86                         pp = p;
  87
  88                 db_printf("%5d %8p %4d %5d %5d %06x %06x  %d %d",
  89                     p->p_pid, (volatile void *)lp,
  90                     p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
  91                     p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag,
  92                     lp->lwp_flag, p->p_stat, lp->lwp_stat);
  93                 if (lp->lwp_wchan) {
  94                         db_printf(" %6s %8p",
  95                                 (lp->lwp_wmesg ? lp->lwp_wmesg : "?"),
  96                                 lp->lwp_wchan);
  97                 } else {
  98                         db_printf("                 ");
  99                 }
 100                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
 101                 db_dump_td_tokens(lp->lwp_thread);
 102
 103                 lp = lwp_rb_tree_RB_NEXT(lp);
 104         }
 105
 106         /*
 107          * Dump running threads
 108          */
 109         for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
 110             struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
 111             thread_t td;
 112             int j;
 113
 114             if (db_more(&nl) < 0)
 115                 return;
 116             db_printf("cpu %d curthread %p reqflags %04x\n",
 117                     gd->gd_cpuid, gd->gd_curthread, gd->gd_reqflags);
 118             if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
 119                     db_printf("       PREEMPTING THREAD %p\n",
 120                                 gd->gd_curthread->td_preempted);
 121             }
 122
 123             if (db_more(&nl) < 0)
 124                 return;
 125             db_printf("      INCOMING IPIQS:");
 126             for (j = 0; j < ncpus; ++j) {
 127                 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
 128                 if (ip != NULL) {
 129                     ip = &ip[cpuidx];
 130                     if (ip->ip_windex != ip->ip_rindex)
 131                         db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
 132                 }
 133             }
 134             db_printf("\n");
 135
 136             if (db_more(&nl) < 0)
 137                 return;
 138             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 139             TAILQ_FOREACH(td, &gd->gd_tdrunq, td_threadq) {
 140                 if (db_more(&nl) < 0)
 141                     return;
 142                 db_printf("  %p %3d %08x %2d/%02d %p %8.8s %s\n",
 143                     td,
 144                     (td->td_proc ? td->td_proc->p_pid : -1),
 145                     td->td_flags,
 146                     td->td_pri,
 147                     td->td_critcount,
 148                     td->td_sp,
 149                     td->td_wmesg ? td->td_wmesg : "-",
 150                     td->td_proc ? td->td_proc->p_comm : td->td_comm);
 151                 if (td->td_preempted)
 152                     db_printf("  PREEMPTING THREAD %p\n", td->td_preempted);
 153                 db_dump_td_tokens(td);
 154             }
 155             if (db_more(&nl) < 0)
 156                 return;
 157             db_printf("\n");
 158             if (db_more(&nl) < 0)
 159                 return;
 160             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 161             TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
 162                 if (db_more(&nl) < 0)
 163                     return;
 164                 db_printf("  %3d %p %3d %08x %2d/%02d %p %8.8s %s\n",
 165                     np, td,
 166                     (td->td_proc ? td->td_proc->p_pid : -1),
 167                     td->td_flags,
 168                     td->td_pri,
 169                     td->td_critcount,
 170                     td->td_sp,
 171                     td->td_wmesg ? td->td_wmesg : "-",
 172                     td->td_proc ? td->td_proc->p_comm : td->td_comm);
 173                 db_dump_td_tokens(td);
 174             }
 175         }
 176         if (db_more(&nl) < 0)
 177             return;
 178         db_printf("CURCPU %d CURTHREAD %p (%d)\n",
 179             mycpu->gd_cpuid,
 180             curthread,
 181             (curthread->td_proc ? curthread->td_proc->p_pid : -1));
 182         db_dump_td_tokens(curthread);
 183 }
 184
 185 static void
 186 db_dump_td_tokens(thread_t td)
 187 {
 188         lwkt_tokref_t ref;
 189         lwkt_token_t tok;
 190
 191         if (TD_TOKS_NOT_HELD(td))
 192                 return;
 193         db_printf("    TOKENS:");
 194         for (ref = &td->td_toks_base; ref < td->td_toks_stop; ++ref) {
 195                 tok = ref->tr_tok;
 196
 197                 db_printf(" %p[tok=%p", ref, ref->tr_tok);
 198 #ifdef SMP
 199                 if (tok->t_ref && td == tok->t_ref->tr_owner)
 200                     db_printf(",held");
 201 #endif
 202                 db_printf("]");
 203         }
 204         db_printf("\n");
 205 }
 206