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 1.20 2006/12/23 00:27:02 swildner 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
  53         np = nprocs;
  54
  55         if (allproc.lh_first != NULL)
  56                 p = allproc.lh_first;
  57         else
  58                 p = &proc0;
  59
  60         if (db_more(&nl) < 0)
  61             return;
  62         db_printf("  pid   proc     uid  ppid  pgrp  flag stat wmesg   wchan   cmd\n");
  63         while (--np >= 0) {
  64                 /*
  65                  * XXX just take 20 for now...
  66                  */
  67                 if (db_more(&nl) < 0)
  68                         return;
  69                 if (p == NULL) {
  70                         kprintf("oops, ran out of processes early!\n");
  71                         break;
  72                 }
  73                 pp = p->p_pptr;
  74                 if (pp == NULL)
  75                         pp = p;
  76
  77                 db_printf("%5d %8p %4d %5d %5d %06x  %d",
  78                     p->p_pid, (volatile void *)p,
  79                     p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
  80                     p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag, p->p_stat);
  81                 if (p->p_wchan) {
  82                         db_printf("  %6s %8p", p->p_wmesg, (void *)p->p_wchan);
  83                 } else {
  84                         db_printf("                 ");
  85                 }
  86                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
  87
  88                 p = p->p_list.le_next;
  89                 if (p == NULL && np > 0)
  90                         p = zombproc.lh_first;
  91         }
  92
  93         /*
  94          * Dump running threads
  95          */
  96         for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
  97             struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
  98             thread_t td;
  99             int j;
 100
 101             if (db_more(&nl) < 0)
 102                 return;
 103             db_printf("cpu %d tdrunqmask %08x curthread %p reqflags %04x\n",
 104                     gd->gd_cpuid, gd->gd_runqmask,
 105                     gd->gd_curthread, gd->gd_reqflags);
 106             if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
 107                     db_printf("       PREEMPTING THREAD %p\n",
 108                                 gd->gd_curthread->td_preempted);
 109             }
 110
 111             if (db_more(&nl) < 0)
 112                 return;
 113             db_printf("      INCOMMING IPIQS:");
 114             for (j = 0; j < ncpus; ++j) {
 115                 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
 116                 if (ip != NULL) {
 117                     ip = &ip[cpuidx];
 118                     if (ip->ip_windex != ip->ip_rindex)
 119                         db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
 120                 }
 121             }
 122             db_printf("\n");
 123
 124             if (db_more(&nl) < 0)
 125                 return;
 126             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 127             for (np = 0; np < 32; ++np) {
 128                 TAILQ_FOREACH(td, &gd->gd_tdrunq[np], td_threadq) {
 129                     if (db_more(&nl) < 0)
 130                         return;
 131                     db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
 132                         np, td,
 133                         (td->td_proc ? td->td_proc->p_pid : -1),
 134                         td->td_flags,
 135                         td->td_pri & TDPRI_MASK,
 136                         td->td_pri / TDPRI_CRIT,
 137 #ifdef SMP
 138                         td->td_mpcount,
 139 #else
 140                         0,
 141 #endif
 142                         td->td_sp,
 143                         td->td_wmesg ? td->td_wmesg : "-",
 144                         td->td_proc ? td->td_proc->p_comm : td->td_comm);
 145                     if (td->td_preempted)
 146                         db_printf("  PREEMPTING THREAD %p\n", td->td_preempted);
 147                     db_dump_td_tokens(td);
 148                 }
 149             }
 150             if (db_more(&nl) < 0)
 151                 return;
 152             db_printf("\n");
 153             if (db_more(&nl) < 0)
 154                 return;
 155             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 156             TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
 157                 if (db_more(&nl) < 0)
 158                     return;
 159                 db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
 160                     np, td,
 161                     (td->td_proc ? td->td_proc->p_pid : -1),
 162                     td->td_flags,
 163                     td->td_pri & TDPRI_MASK,
 164                     td->td_pri / TDPRI_CRIT,
 165 #ifdef SMP
 166                     td->td_mpcount,
 167 #else
 168                     0,
 169 #endif
 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->td_toks == NULL)
 192                 return;
 193         db_printf("    TOKENS:");
 194         for (ref = td->td_toks; ref; ref = ref->tr_next) {
 195                 tok = ref->tr_tok;
 196
 197                 db_printf(" %p[tok=%p", ref, ref->tr_tok);
 198 #ifdef SMP
 199                 if (td == tok->t_owner)
 200                     db_printf(",held");
 201 #endif
 202                 db_printf("]");
 203         }
 204         db_printf("\n");
 205 }
 206