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 1.9 2004/03/01 06:32:49 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 int
  44 db_more(int *nl)
  45 {
  46         ++*nl;
  47         if (*nl == 20) {
  48                 int c;
  49
  50                 db_printf("--More--");
  51                 c = cngetc();
  52                 db_printf("\r");
  53                 /*
  54                  * A whole screenfull or just one line?
  55                  */
  56                 switch (c) {
  57                 case '\n':              /* just one line */
  58                         *nl = 19;
  59                         break;
  60                 case ' ':
  61                         *nl = 0;        /* another screenfull */
  62                         break;
  63                 default:                /* exit */
  64                         db_printf("\n");
  65                         return(-1);
  66                 }
  67         }
  68         return(0);
  69 }
  70
  71 static void db_dump_td_tokens(thread_t td);
  72
  73 void
  74 db_ps(dummy1, dummy2, dummy3, dummy4)
  75         db_expr_t       dummy1;
  76         boolean_t       dummy2;
  77         db_expr_t       dummy3;
  78         char *          dummy4;
  79 {
  80         int np;
  81         int cpuidx;
  82         int nl = 0;
  83         volatile struct proc *p, *pp;
  84
  85         np = nprocs;
  86
  87         if (allproc.lh_first != NULL)
  88                 p = allproc.lh_first;
  89         else
  90                 p = &proc0;
  91
  92         if (db_more(&nl) < 0)
  93             return;
  94         db_printf("  pid   proc     addr    uid  ppid  pgrp  flag stat wmesg   wchan   cmd\n");
  95         while (--np >= 0) {
  96                 /*
  97                  * XXX just take 20 for now...
  98                  */
  99                 if (db_more(&nl) < 0)
 100                         return;
 101                 if (p == NULL) {
 102                         printf("oops, ran out of processes early!\n");
 103                         break;
 104                 }
 105                 pp = p->p_pptr;
 106                 if (pp == NULL)
 107                         pp = p;
 108
 109                 db_printf("%5d %8p %8p %4d %5d %5d %06x  %d",
 110                     p->p_pid, (volatile void *)p, (void *)p->p_thread->td_pcb,
 111                     p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
 112                     p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag, p->p_stat);
 113                 if (p->p_wchan) {
 114                         db_printf("  %6s %8p", p->p_wmesg, (void *)p->p_wchan);
 115                 } else {
 116                         db_printf("                 ");
 117                 }
 118                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
 119                 db_dump_td_tokens(p->p_thread);
 120
 121                 p = p->p_list.le_next;
 122                 if (p == NULL && np > 0)
 123                         p = zombproc.lh_first;
 124         }
 125
 126         /*
 127          * Dump running threads
 128          */
 129         for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
 130             struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
 131             thread_t td;
 132             int j;
 133
 134             if (db_more(&nl) < 0)
 135                 return;
 136             db_printf("cpu %d tdrunqmask %08x curthread %p reqflags %04x\n",
 137                     gd->gd_cpuid, gd->gd_runqmask,
 138                     gd->gd_curthread, gd->gd_reqflags);
 139             if (gd->gd_tokreqbase) {
 140                 lwkt_tokref_t ref;
 141
 142                 if (db_more(&nl) < 0)
 143                     return;
 144                 db_printf("      tokenrequests:");
 145                 for (ref = gd->gd_tokreqbase; ref; ref = ref->tr_next) {
 146                     db_printf(" [r=%p,t=%p]", ref, ref->tr_tok);
 147                 }
 148                 db_printf("\n");
 149             }
 150             if (db_more(&nl) < 0)
 151                 return;
 152             db_printf("      INCOMMING IPIQS:");
 153             for (j = 0; j < ncpus; ++j) {
 154                 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
 155                 if (ip != NULL) {
 156                     ip = &ip[cpuidx];
 157                     if (ip->ip_windex != ip->ip_rindex)
 158                         db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
 159                 }
 160             }
 161             db_printf("\n");
 162
 163             if (db_more(&nl) < 0)
 164                 return;
 165             db_printf("  tdq     thread    pid flags  pri(act)        sp    wmesg comm\n");
 166             for (np = 0; np < 32; ++np) {
 167                 TAILQ_FOREACH(td, &gd->gd_tdrunq[np], td_threadq) {
 168                     if (db_more(&nl) < 0)
 169                         return;
 170                     db_printf("  %3d %p %3d %08x %3d(%3d) %p %8.8s %s\n",
 171                         np, td,
 172                         (td->td_proc ? td->td_proc->p_pid : -1),
 173                         td->td_flags, td->td_pri,
 174                         td->td_pri & TDPRI_MASK,
 175                         td->td_sp,
 176                         td->td_wmesg ? td->td_wmesg : "-",
 177                         td->td_proc ? td->td_proc->p_comm : td->td_comm);
 178                     db_dump_td_tokens(td);
 179                 }
 180             }
 181             if (db_more(&nl) < 0)
 182                 return;
 183             db_printf("\n");
 184             if (db_more(&nl) < 0)
 185                 return;
 186             db_printf("  tdq     thread    pid flags  pri(act)        sp    wmesg comm\n");
 187             TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
 188                 if (db_more(&nl) < 0)
 189                     return;
 190                 db_printf("  %3d %p %3d %08x %3d(%3d) %p %8.8s %s\n",
 191                     np, td,
 192                     (td->td_proc ? td->td_proc->p_pid : -1),
 193                     td->td_flags, td->td_pri,
 194                     td->td_pri & TDPRI_MASK,
 195                     td->td_sp,
 196                     td->td_wmesg ? td->td_wmesg : "-",
 197                     td->td_proc ? td->td_proc->p_comm : td->td_comm);
 198                 db_dump_td_tokens(td);
 199             }
 200         }
 201         if (db_more(&nl) < 0)
 202             return;
 203         db_printf("CURCPU %d CURTHREAD %p (%d)\n",
 204             mycpu->gd_cpuid,
 205             curthread,
 206             (curthread->td_proc ? curthread->td_proc->p_pid : -1)
 207         );
 208         db_dump_td_tokens(curthread);
 209 }
 210
 211 static void
 212 db_dump_td_tokens(thread_t td)
 213 {
 214         lwkt_tokref_t ref;
 215         lwkt_token_t tok;
 216
 217         if (td->td_toks == NULL)
 218                 return;
 219         db_printf("    TOKENS:");
 220         for (ref = td->td_toks; ref; ref = ref->tr_next) {
 221                 tok = ref->tr_tok;
 222
 223                 db_printf(" %p[tok=%p", ref, ref->tr_tok);
 224                 if (td->td_gd == tok->t_cpu)
 225                     db_printf(",held");
 226                 if (ref->tr_magic == LWKT_TOKREF_MAGIC1)
 227                     ;
 228                 else if (ref->tr_magic == LWKT_TOKREF_MAGIC2)
 229                     db_printf(",wait");
 230                 else
 231                     db_printf(",badmagic");
 232                 db_printf("]");
 233         }
 234         db_printf("\n");
 235 }
 236