db_ps.c revision 70527 
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: head/sys/ddb/db_ps.c 70527 2000-12-30 22:06:19Z phk $
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
42void
43db_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 (!LIST_EMPTY(&allproc))
56		p = LIST_FIRST(&allproc);
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 = LIST_NEXT(p, p_list);
106		if (p == NULL && np > 0)
107			p = LIST_FIRST(&zombproc);
108    	}
109}
110