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FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_ps.c

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    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 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: src/sys/ddb/db_ps.c,v 1.49 2003/08/30 19:06:57 phk Exp $");
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 #include <sys/lock.h>
   40 #include <sys/mutex.h>
   41 #include <sys/proc.h>
   42 #include <sys/cons.h>
   43 #include <vm/vm.h>
   44 #include <vm/vm_param.h>
   45 #include <vm/pmap.h>
   46 
   47 #include <ddb/ddb.h>
   48 
   49 static void     dumpthread(volatile struct proc *p, volatile struct thread *td);
   50 
   51 void
   52 db_ps(dummy1, dummy2, dummy3, dummy4)
   53         db_expr_t       dummy1;
   54         boolean_t       dummy2;
   55         db_expr_t       dummy3;
   56         char *          dummy4;
   57 {
   58         volatile struct proc *p, *pp;
   59         volatile struct thread *td;
   60         char *state;
   61         int np, quit;
   62 
   63         np = nprocs;
   64         quit = 0;
   65 
   66         /* sx_slock(&allproc_lock); */
   67         if (!LIST_EMPTY(&allproc))
   68                 p = LIST_FIRST(&allproc);
   69         else
   70                 p = &proc0;
   71 
   72         db_setup_paging(db_simple_pager, &quit, DB_LINES_PER_PAGE);
   73         db_printf("  pid   proc     uarea   uid  ppid  pgrp  flag   stat  wmesg    wchan  cmd\n");
   74         while (--np >= 0 && !quit) {
   75                 if (p == NULL) {
   76                         printf("oops, ran out of processes early!\n");
   77                         break;
   78                 }
   79                 /* PROC_LOCK(p); */
   80                 pp = p->p_pptr;
   81                 if (pp == NULL)
   82                         pp = p;
   83 
   84 
   85                 switch(p->p_state) {
   86                 case PRS_NORMAL:
   87                         if (P_SHOULDSTOP(p))
   88                                 state = "stop";
   89                         else
   90                                 state = "";
   91                         break;
   92                 case PRS_NEW:
   93                         state = "new ";
   94                         break;
   95                 case PRS_ZOMBIE:
   96                         state = "zomb";
   97                         break;
   98                 default:
   99                         state = "Unkn";
  100                         break;
  101                 }
  102                 db_printf("%5d %8p %8p %4d %5d %5d %07x %s",
  103                     p->p_pid, (volatile void *)p, (void *)p->p_uarea, 
  104                     p->p_ucred != NULL ? p->p_ucred->cr_ruid : 0, pp->p_pid,
  105                     p->p_pgrp != NULL ? p->p_pgrp->pg_id : 0, p->p_flag,
  106                     state);
  107                 if (p->p_flag & P_SA) 
  108                         db_printf("(threaded)  %s\n", p->p_comm);
  109                 FOREACH_THREAD_IN_PROC(p, td) {
  110                         dumpthread(p, td);
  111                         if (quit)
  112                                 break;
  113                 }
  114                 /* PROC_UNLOCK(p); */
  115 
  116                 p = LIST_NEXT(p, p_list);
  117                 if (p == NULL && np > 0)
  118                         p = LIST_FIRST(&zombproc);
  119         }
  120         /* sx_sunlock(&allproc_lock); */
  121 }
  122 
  123 static void
  124 dumpthread(volatile struct proc *p, volatile struct thread *td)
  125 {
  126 
  127         if (p->p_flag & P_SA) 
  128                 db_printf( "   thread %p ksegrp %p ", td, td->td_ksegrp);
  129         if (TD_ON_SLEEPQ(td)) {
  130                 if (td->td_flags & TDF_CVWAITQ)
  131                         if (TD_IS_SLEEPING(td))
  132                                 db_printf("[CV]");
  133                         else
  134                                 db_printf("[CVQ");
  135                 else
  136                         if (TD_IS_SLEEPING(td))
  137                                 db_printf("[SLP]");
  138                         else
  139                                 db_printf("[SLPQ");
  140                 db_printf("%s %p]", td->td_wmesg,
  141                     (void *)td->td_wchan);
  142         }
  143         switch (td->td_state) {
  144         case TDS_INHIBITED:
  145                 if (TD_ON_LOCK(td)) {
  146                         db_printf("[LOCK %6s %8p]",
  147                             td->td_lockname,
  148                             (void *)td->td_blocked);
  149                 }
  150 #if 0 /* covered above */
  151                 if (TD_IS_SLEEPING(td)) {
  152                         db_printf("[SLP]");
  153                 }  
  154 #endif
  155                 if (TD_IS_SWAPPED(td)) {
  156                         db_printf("[SWAP]");
  157                 }
  158                 if (TD_IS_SUSPENDED(td)) {
  159                         db_printf("[SUSP]");
  160                 }
  161                 if (TD_AWAITING_INTR(td)) {
  162                         db_printf("[IWAIT]");
  163                 }
  164                 break;
  165         case TDS_CAN_RUN:
  166                 db_printf("[Can run]");
  167                 break;
  168         case TDS_RUNQ:
  169                 db_printf("[RUNQ]");
  170                 break;
  171         case TDS_RUNNING:
  172                 db_printf("[CPU %d]", td->td_oncpu);
  173                 break;
  174         case TDS_INACTIVE:
  175                 db_printf("[INACTIVE]");
  176                 break;
  177         default:
  178                 db_printf("[UNK: %#x]", td->td_state);
  179         }
  180         if (p->p_flag & P_SA) {
  181                 if (td->td_kse)
  182                         db_printf("[kse %p]", td->td_kse);
  183                 db_printf("\n");
  184         } else
  185                 db_printf(" %s\n", p->p_comm);
  186 }
  187 
  188 
  189 #define INKERNEL(va)    (((vm_offset_t)(va)) >= USRSTACK)
  190 void
  191 db_show_one_thread(db_expr_t addr, boolean_t have_addr,
  192                 db_expr_t count, char *modif)
  193 {
  194         struct proc *p;
  195         struct thread *td;
  196 
  197         if (!have_addr)
  198                 td = curthread;
  199         else if (!INKERNEL(addr)) {
  200                 printf("bad thread address");
  201                 return;
  202         } else
  203                 td = (struct thread *)addr;
  204         /* quick sanity check */
  205         if ((p = td->td_proc) != td->td_ksegrp->kg_proc)
  206                 return;
  207         printf("Proc %p ",p);
  208         dumpthread(p, td);
  209 #ifdef  __i386__
  210         db_stack_thread((db_expr_t)td, 1, count, modif);
  211 #endif
  212 }

Cache object: 4466b3f4c6c5637406059246792db42b


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