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 1.14 2005/10/11 09:59:56 corecode 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(dummy1, dummy2, dummy3, dummy4)
  47         db_expr_t       dummy1;
  48         boolean_t       dummy2;
  49         db_expr_t       dummy3;
  50         char *          dummy4;
  51 {
  52         int np;
  53         int cpuidx;
  54         int nl = 0;
  55         volatile struct proc *p, *pp;
  56
  57         np = nprocs;
  58
  59         if (allproc.lh_first != NULL)
  60                 p = allproc.lh_first;
  61         else
  62                 p = &proc0;
  63
  64         if (db_more(&nl) < 0)
  65             return;
  66         db_printf("  pid   proc     addr    uid  ppid  pgrp  flag stat wmesg   wchan   cmd\n");
  67         while (--np >= 0) {
  68                 /*
  69                  * XXX just take 20 for now...
  70                  */
  71                 if (db_more(&nl) < 0)
  72                         return;
  73                 if (p == NULL) {
  74                         printf("oops, ran out of processes early!\n");
  75                         break;
  76                 }
  77                 pp = p->p_pptr;
  78                 if (pp == NULL)
  79                         pp = p;
  80
  81                 db_printf("%5d %8p %8p %4d %5d %5d %06x  %d",
  82                     p->p_pid, (volatile void *)p, (void *)p->p_thread->td_pcb,
  83                     p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
  84                     p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag, p->p_stat);
  85                 if (p->p_wchan) {
  86                         db_printf("  %6s %8p", p->p_wmesg, (void *)p->p_wchan);
  87                 } else {
  88                         db_printf("                 ");
  89                 }
  90                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
  91                 db_dump_td_tokens(p->p_thread);
  92
  93                 p = p->p_list.le_next;
  94                 if (p == NULL && np > 0)
  95                         p = zombproc.lh_first;
  96         }
  97
  98         /*
  99          * Dump running threads
 100          */
 101         for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
 102             struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
 103             thread_t td;
 104             int j;
 105
 106             if (db_more(&nl) < 0)
 107                 return;
 108             db_printf("cpu %d tdrunqmask %08x curthread %p reqflags %04x\n",
 109                     gd->gd_cpuid, gd->gd_runqmask,
 110                     gd->gd_curthread, gd->gd_reqflags);
 111             db_printf("       uschedcp %p (%d/%d) upri %d\n",
 112                     gd->gd_uschedcp,
 113                     (gd->gd_uschedcp ? gd->gd_uschedcp->lwp_proc->p_pid : -1),
 114                     (gd->gd_uschedcp ? gd->gd_uschedcp->lwp_tid : -1),
 115                     gd->gd_upri);
 116             if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
 117                     db_printf("       PREEMPTING THREAD %p\n",
 118                                 gd->gd_curthread->td_preempted);
 119             }
 120
 121             if (gd->gd_tokreqbase) {
 122                 lwkt_tokref_t ref;
 123
 124                 if (db_more(&nl) < 0)
 125                     return;
 126                 db_printf("      tokenrequests:");
 127                 for (ref = gd->gd_tokreqbase; ref; ref = ref->tr_next) {
 128                     db_printf(" [r=%p,t=%p]", ref, ref->tr_tok);
 129                 }
 130                 db_printf("\n");
 131             }
 132             if (db_more(&nl) < 0)
 133                 return;
 134             db_printf("      INCOMMING IPIQS:");
 135             for (j = 0; j < ncpus; ++j) {
 136                 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
 137                 if (ip != NULL) {
 138                     ip = &ip[cpuidx];
 139                     if (ip->ip_windex != ip->ip_rindex)
 140                         db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
 141                 }
 142             }
 143             db_printf("\n");
 144
 145             if (db_more(&nl) < 0)
 146                 return;
 147             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 148             for (np = 0; np < 32; ++np) {
 149                 TAILQ_FOREACH(td, &gd->gd_tdrunq[np], td_threadq) {
 150                     if (db_more(&nl) < 0)
 151                         return;
 152                     db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
 153                         np, td,
 154                         (td->td_proc ? td->td_proc->p_pid : -1),
 155                         td->td_flags,
 156                         td->td_pri & TDPRI_MASK,
 157                         td->td_pri / TDPRI_CRIT,
 158 #ifdef SMP
 159                         td->td_mpcount,
 160 #else
 161                         0,
 162 #endif
 163                         td->td_sp,
 164                         td->td_wmesg ? td->td_wmesg : "-",
 165                         td->td_proc ? td->td_proc->p_comm : td->td_comm);
 166                     if (td->td_preempted)
 167                         db_printf("  PREEMPTING THREAD %p\n", td->td_preempted);
 168                     db_dump_td_tokens(td);
 169                 }
 170             }
 171             if (db_more(&nl) < 0)
 172                 return;
 173             db_printf("\n");
 174             if (db_more(&nl) < 0)
 175                 return;
 176             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 177             TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
 178                 if (db_more(&nl) < 0)
 179                     return;
 180                 db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
 181                     np, td,
 182                     (td->td_proc ? td->td_proc->p_pid : -1),
 183                     td->td_flags,
 184                     td->td_pri & TDPRI_MASK,
 185                     td->td_pri / TDPRI_CRIT,
 186 #ifdef SMP
 187                     td->td_mpcount,
 188 #else
 189                     0,
 190 #endif
 191                     td->td_sp,
 192                     td->td_wmesg ? td->td_wmesg : "-",
 193                     td->td_proc ? td->td_proc->p_comm : td->td_comm);
 194                 db_dump_td_tokens(td);
 195             }
 196         }
 197         if (db_more(&nl) < 0)
 198             return;
 199         db_printf("CURCPU %d CURTHREAD %p (%d) USCHEDCP %p (%d/%d) UPRI %d\n",
 200             mycpu->gd_cpuid,
 201             curthread,
 202             (curthread->td_proc ? curthread->td_proc->p_pid : -1),
 203             mycpu->gd_uschedcp,
 204             (mycpu->gd_uschedcp ? mycpu->gd_uschedcp->lwp_proc->p_pid : -1),
 205             (mycpu->gd_uschedcp ? mycpu->gd_uschedcp->lwp_tid : -1),
 206             mycpu->gd_upri);
 207         db_dump_td_tokens(curthread);
 208 }
 209
 210 static void
 211 db_dump_td_tokens(thread_t td)
 212 {
 213         lwkt_tokref_t ref;
 214         lwkt_token_t tok;
 215
 216         if (td->td_toks == NULL)
 217                 return;
 218         db_printf("    TOKENS:");
 219         for (ref = td->td_toks; ref; ref = ref->tr_next) {
 220                 tok = ref->tr_tok;
 221
 222                 db_printf(" %p[tok=%p", ref, ref->tr_tok);
 223                 if (td->td_gd == tok->t_cpu)
 224                     db_printf(",held");
 225                 if (ref->tr_magic == LWKT_TOKREF_MAGIC1)
 226                     ;
 227                 else if (ref->tr_magic == LWKT_TOKREF_MAGIC2)
 228                     db_printf(",wait");
 229                 else
 230                     db_printf(",badmagic");
 231                 db_printf("]");
 232         }
 233         db_printf("\n");
 234 }
 235