db_ps.c revision 10128 
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 *	$Id: db_ps.c,v 1.6 1995/05/30 07:57:07 rgrimes Exp $
34 */
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/proc.h>
38#include <ddb/ddb.h>
39#include <machine/cons.h>
40
41void
42db_ps() {
43	int np;
44	int nl = 0;
45	volatile struct proc *p, *pp;
46
47	np = nprocs;
48
49	if (allproc != NULL)
50		p = allproc;
51	else
52		p = &proc0;
53
54	db_printf("  pid   proc     addr    uid  ppid  pgrp  flag stat wmesg   wchan   cmd\n");
55	while (--np >= 0) {
56		/*
57		 * XXX just take 20 for now...
58		 */
59		if (nl++ == 20) {
60			int c;
61
62			db_printf("--More--");
63			c = cngetc();
64			db_printf("\r");
65			/*
66			 * A whole screenfull or just one line?
67			 */
68			switch (c) {
69			case '\n':		/* just one line */
70				nl = 19;
71				break;
72			case ' ':
73				nl = 0;		/* another screenfull */
74				break;
75			default:		/* exit */
76				db_printf("\n");
77				return;
78			}
79		}
80		pp = p->p_pptr;
81		if (pp == NULL)
82			pp = p;
83
84		db_printf("%5d %06x %06x %4d %5d %5d %06x  %d",
85		    p->p_pid, p, p->p_addr, p->p_cred ? p->p_cred->p_ruid : 0,
86		    pp->p_pid, p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag, p->p_stat);
87		if (p->p_wchan) {
88			db_printf("  %6s %08x", p->p_wmesg, p->p_wchan);
89		} else {
90			db_printf("                 ");
91		}
92		db_printf(" %s\n", p->p_comm ? p->p_comm : "");
93
94		p = p->p_next;
95		if (p == NULL && np > 0)
96			p = zombproc;
97    	}
98}
99