Misc interrupts/LWKT 1/2: interlock the idle thread. Put execution of
[dragonfly.git] / 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 * $FreeBSD: src/sys/ddb/db_ps.c,v 1.20 1999/08/28 00:41:09 peter Exp $
41c20dac 34 * $DragonFly: src/sys/ddb/db_ps.c,v 1.4 2003/06/23 17:55:27 dillon Exp $
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35 */
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/proc.h>
39#include <sys/cons.h>
40
41#include <ddb/ddb.h>
42
43void
44db_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",
b7c628e4 96 p->p_pid, (volatile void *)p, (void *)p->p_thread->td_pcb,
41c20dac 97 p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
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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}