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 1.21 2007/02/03 17:05:57 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(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
  61         if (db_more(&nl) < 0)
  62             return;
  63         db_printf("  pid   proc     uid  ppid  pgrp  flag stat wmesg   wchan   cmd\n");
  64         while (--np >= 0) {
  65                 /*
  66                  * XXX just take 20 for now...
  67                  */
  68                 if (db_more(&nl) < 0)
  69                         return;
  70                 if (p == NULL) {
  71                         kprintf("oops, ran out of processes early!\n");
  72                         break;
  73                 }
  74                 pp = p->p_pptr;
  75                 if (pp == NULL)
  76                         pp = p;
  77
  78                 /* XXX lwp */
  79                 lp = FIRST_LWP_IN_PROC(p);
  80                 db_printf("%5d %8p %8p %4d %5d %5d %06x  %d",
  81                     p->p_pid, (volatile void *)p,
  82                     (void *)lp->lwp_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 (lp->lwp_wchan) {
  86                         db_printf("  %6s %8p", lp->lwp_wmesg,
  87                             (void *)lp->lwp_wchan);
  88                 } else {
  89                         db_printf("                 ");
  90                 }
  91                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
  92                 db_dump_td_tokens(lp->lwp_thread);
  93
  94                 p = p->p_list.le_next;
  95                 if (p == NULL && np > 0)
  96                         p = zombproc.lh_first;
  97         }
  98
  99         /*
 100          * Dump running threads
 101          */
 102         for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
 103             struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
 104             thread_t td;
 105             int j;
 106
 107             if (db_more(&nl) < 0)
 108                 return;
 109             db_printf("cpu %d tdrunqmask %08x curthread %p reqflags %04x\n",
 110                     gd->gd_cpuid, gd->gd_runqmask,
 111                     gd->gd_curthread, gd->gd_reqflags);
 112             if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
 113                     db_printf("       PREEMPTING THREAD %p\n",
 114                                 gd->gd_curthread->td_preempted);
 115             }
 116
 117             if (db_more(&nl) < 0)
 118                 return;
 119             db_printf("      INCOMMING IPIQS:");
 120             for (j = 0; j < ncpus; ++j) {
 121                 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
 122                 if (ip != NULL) {
 123                     ip = &ip[cpuidx];
 124                     if (ip->ip_windex != ip->ip_rindex)
 125                         db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
 126                 }
 127             }
 128             db_printf("\n");
 129
 130             if (db_more(&nl) < 0)
 131                 return;
 132             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 133             for (np = 0; np < 32; ++np) {
 134                 TAILQ_FOREACH(td, &gd->gd_tdrunq[np], td_threadq) {
 135                     if (db_more(&nl) < 0)
 136                         return;
 137                     db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
 138                         np, td,
 139                         (td->td_proc ? td->td_proc->p_pid : -1),
 140                         td->td_flags,
 141                         td->td_pri & TDPRI_MASK,
 142                         td->td_pri / TDPRI_CRIT,
 143 #ifdef SMP
 144                         td->td_mpcount,
 145 #else
 146                         0,
 147 #endif
 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             }
 156             if (db_more(&nl) < 0)
 157                 return;
 158             db_printf("\n");
 159             if (db_more(&nl) < 0)
 160                 return;
 161             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
 162             TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
 163                 if (db_more(&nl) < 0)
 164                     return;
 165                 db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
 166                     np, td,
 167                     (td->td_proc ? td->td_proc->p_pid : -1),
 168                     td->td_flags,
 169                     td->td_pri & TDPRI_MASK,
 170                     td->td_pri / TDPRI_CRIT,
 171 #ifdef SMP
 172                     td->td_mpcount,
 173 #else
 174                     0,
 175 #endif
 176                     td->td_sp,
 177                     td->td_wmesg ? td->td_wmesg : "-",
 178                     td->td_proc ? td->td_proc->p_comm : td->td_comm);
 179                 db_dump_td_tokens(td);
 180             }
 181         }
 182         if (db_more(&nl) < 0)
 183             return;
 184         db_printf("CURCPU %d CURTHREAD %p (%d)\n",
 185             mycpu->gd_cpuid,
 186             curthread,
 187             (curthread->td_proc ? curthread->td_proc->p_pid : -1));
 188         db_dump_td_tokens(curthread);
 189 }
 190
 191 static void
 192 db_dump_td_tokens(thread_t td)
 193 {
 194         lwkt_tokref_t ref;
 195         lwkt_token_t tok;
 196
 197         if (td->td_toks == NULL)
 198                 return;
 199         db_printf("    TOKENS:");
 200         for (ref = td->td_toks; ref; ref = ref->tr_next) {
 201                 tok = ref->tr_tok;
 202
 203                 db_printf(" %p[tok=%p", ref, ref->tr_tok);
 204 #ifdef SMP
 205                 if (td == tok->t_owner)
 206                     db_printf(",held");
 207 #endif
 208                 db_printf("]");
 209         }
 210         db_printf("\n");
 211 }
 212