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

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

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