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  */
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/proc.h>
  38 #include <sys/cons.h>
  39
  40 #include <ddb/ddb.h>
  41
  42 static void db_dump_td_tokens(thread_t td);
  43
  44 void
  45 db_ps(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
  46 {
  47         int np;
  48         int cpuidx;
  49         int nl = 0;
  50         volatile struct proc *p, *pp;
  51         struct lwp *lp;
  52
  53         np = nprocs;
  54
  55         if (allproc.lh_first != NULL)
  56                 p = allproc.lh_first;
  57         else
  58                 p = &proc0;
  59         lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
  60
  61         if (db_more(&nl) < 0)
  62             return;
  63         db_printf("  pid      lwp  uid  ppid  pgrp  pflags lflags stat  wmesg    wchan cmd\n");
  64         for (;;) {
  65                 while (lp == NULL) {
  66                         --np;
  67                         p = p->p_list.le_next;
  68                         if (p == NULL && np > 0)
  69                                 p = zombproc.lh_first;
  70                         if (p == NULL)
  71                                 break;
  72                         lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
  73                 }
  74                 /*
  75                  * XXX just take 20 for now...
  76                  */
  77                 if (db_more(&nl) < 0)
  78                         return;
  79                 if (p == NULL) {
  80                         kprintf("oops, ran out of processes early!\n");
  81                         break;
  82                 }
  83                 pp = p->p_pptr;
  84                 if (pp == NULL)
  85                         pp = p;
  86
  87                 db_printf("%5d %8p %4d %5d %5d %06x %06x  %d %d",
  88                     p->p_pid, (volatile void *)lp,
  89                     p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
  90                     p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flags,
  91                     lp->lwp_flags, p->p_stat, lp->lwp_stat);
  92                 if (lp->lwp_wchan) {
  93                         db_printf(" %6s %8p",
  94                                 (lp->lwp_wmesg ? lp->lwp_wmesg : "?"),
  95                                 lp->lwp_wchan);
  96                 } else {
  97                         db_printf("                 ");
  98                 }
  99                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
 100                 db_dump_td_tokens(lp->lwp_thread);
 101
 102                 lp = lwp_rb_tree_RB_NEXT(lp);
 103         }
 104
 105         /*
 106          * Dump running threads
 107          */
 108         for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
 109             struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
 110             thread_t td;
 111             int j;
 112
 113             if (db_more(&nl) < 0)
 114                 return;
 115             db_printf("cpu %d curthread %p reqflags %04x\n",
 116                     gd->gd_cpuid, gd->gd_curthread, gd->gd_reqflags);
 117             if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
 118                     db_printf("       PREEMPTING THREAD %p\n",
 119                                 gd->gd_curthread->td_preempted);
 120             }
 121
 122             if (db_more(&nl) < 0)
 123                 return;
 124             db_printf("      INCOMING IPIQS:");
 125             for (j = 0; j < ncpus; ++j) {
 126                 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
 127                 if (ip != NULL) {
 128                     ip = &ip[cpuidx];
 129                     if (ip->ip_windex != ip->ip_rindex)
 130                         db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
 131                 }
 132             }
 133             db_printf("\n");
 134
 135             if (db_more(&nl) < 0)
 136                 return;
 137             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg wchan comm\n");
 138             TAILQ_FOREACH(td, &gd->gd_tdrunq, td_threadq) {
 139                 if (db_more(&nl) < 0)
 140                     return;
 141                 db_printf("  %p %3d %08x %2d/%02d %p %8.8s %p %s\n",
 142                     td,
 143                     (td->td_proc ? td->td_proc->p_pid : -1),
 144                     td->td_flags,
 145                     td->td_pri,
 146                     td->td_critcount,
 147                     td->td_sp,
 148                     td->td_wmesg ? td->td_wmesg : "-",
 149                     td->td_wchan,
 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 wchan comm\n");
 161             TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
 162                 if (td->td_flags & TDF_MARKER)
 163                     continue;
 164                 if (db_more(&nl) < 0)
 165                     return;
 166                 db_printf("  %3d %p %3d %08x %2d/%02d %p %8.8s %p %s\n",
 167                     np, td,
 168                     (td->td_proc ? td->td_proc->p_pid : -1),
 169                     td->td_flags,
 170                     td->td_pri,
 171                     td->td_critcount,
 172                     td->td_sp,
 173                     td->td_wmesg ? td->td_wmesg : "-",
 174                     td->td_wchan,
 175                     td->td_proc ? td->td_proc->p_comm : td->td_comm);
 176                 db_dump_td_tokens(td);
 177             }
 178         }
 179         if (db_more(&nl) < 0)
 180             return;
 181         db_printf("CURCPU %d CURTHREAD %p (%d)\n",
 182             mycpu->gd_cpuid,
 183             curthread,
 184             (curthread->td_proc ? curthread->td_proc->p_pid : -1));
 185         db_dump_td_tokens(curthread);
 186 }
 187
 188 static void
 189 db_dump_td_tokens(thread_t td)
 190 {
 191         lwkt_tokref_t ref;
 192         lwkt_token_t tok;
 193
 194         if (TD_TOKS_NOT_HELD(td))
 195                 return;
 196         db_printf("    TOKENS:");
 197         for (ref = &td->td_toks_base; ref < td->td_toks_stop; ++ref) {
 198                 tok = ref->tr_tok;
 199
 200                 db_printf(" %p[tok=%p", ref, ref->tr_tok);
 201                 if (tok->t_ref && td == tok->t_ref->tr_owner)
 202                     db_printf(",held");
 203                 db_printf("]");
 204         }
 205         db_printf("\n");
 206 }
 207