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  * $FreeBSD$
   34  */
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/proc.h>
   38 
   39 #include <machine/cons.h>
   40 
   41 #include <ddb/ddb.h>
   42 
   43 void
   44 db_ps(dummy1, dummy2, dummy3, dummy4)
   45         db_expr_t       dummy1;
   46         boolean_t       dummy2;
   47         db_expr_t       dummy3;
   48         char *          dummy4;
   49 {
   50         int np;
   51         int nl = 0;
   52         volatile struct proc *p, *pp;
   53 
   54         np = nprocs;
   55 
   56         if (allproc.lh_first != NULL)
   57                 p = allproc.lh_first;
   58         else
   59                 p = &proc0;
   60 
   61         db_printf("  pid   proc     addr    uid  ppid  pgrp  flag stat wmesg   wchan   cmd\n");
   62         while (--np >= 0) {
   63                 /*
   64                  * XXX just take 20 for now...
   65                  */
   66                 if (nl++ == 20) {
   67                         int c;
   68 
   69                         db_printf("--More--");
   70                         c = cngetc();
   71                         db_printf("\r");
   72                         /*
   73                          * A whole screenfull or just one line?
   74                          */
   75                         switch (c) {
   76                         case '\n':              /* just one line */
   77                                 nl = 20;
   78                                 break;
   79                         case ' ':
   80                                 nl = 0;         /* another screenfull */
   81                                 break;
   82                         default:                /* exit */
   83                                 db_printf("\n");
   84                                 return;
   85                         }
   86                 }
   87                 if (p == NULL) {
   88                         printf("oops, ran out of processes early!\n");
   89                         break;
   90                 }
   91                 pp = p->p_pptr;
   92                 if (pp == NULL)
   93                         pp = p;
   94 
   95                 db_printf("%5d %8p %8p %4d %5d %5d %06x  %d",
   96                     p->p_pid, (void *)p, (void *)p->p_addr,
   97                     p->p_cred ? p->p_cred->p_ruid : 0, pp->p_pid,
   98                     p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag, p->p_stat);
   99                 if (p->p_wchan) {
  100                         db_printf("  %6s %8p", p->p_wmesg, (void *)p->p_wchan);
  101                 } else {
  102                         db_printf("                 ");
  103                 }
  104                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
  105 
  106                 p = p->p_list.le_next;
  107                 if (p == NULL && np > 0)
  108                         p = zombproc.lh_first;
  109         }
  110 }

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

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