kernel - Major signal path adjustments to fix races, tsleep race fixes, +more
[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 $
9daaf3d3 34 * $DragonFly: src/sys/ddb/db_ps.c,v 1.25 2008/06/29 21:38:21 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
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43static void db_dump_td_tokens(thread_t td);
44
984263bc 45void
2c9702b2 46db_ps(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
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47{
48 int np;
96728c05 49 int cpuidx;
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50 int nl = 0;
51 volatile struct proc *p, *pp;
08f2f1bb 52 struct lwp *lp;
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53
54 np = nprocs;
55
56 if (allproc.lh_first != NULL)
57 p = allproc.lh_first;
58 else
59 p = &proc0;
3e291793 60 lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
984263bc 61
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62 if (db_more(&nl) < 0)
63 return;
4643740a 64 db_printf(" pid lwp uid ppid pgrp pflags lflags stat wmesg wchan cmd\n");
c7e98b2f 65 for (;;) {
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66 while (lp == NULL) {
67 --np;
68 p = p->p_list.le_next;
69 if (p == NULL && np > 0)
70 p = zombproc.lh_first;
71 if (p == NULL)
72 break;
73 lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
74 }
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75 /*
76 * XXX just take 20 for now...
77 */
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78 if (db_more(&nl) < 0)
79 return;
984263bc 80 if (p == NULL) {
26be20a0 81 kprintf("oops, ran out of processes early!\n");
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82 break;
83 }
84 pp = p->p_pptr;
85 if (pp == NULL)
86 pp = p;
87
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88 db_printf("%5d %8p %4d %5d %5d %06x %06x %d %d",
89 p->p_pid, (volatile void *)lp,
41c20dac 90 p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
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91 p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flags,
92 lp->lwp_flags, p->p_stat, lp->lwp_stat);
08f2f1bb 93 if (lp->lwp_wchan) {
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94 db_printf(" %6s %8p",
95 (lp->lwp_wmesg ? lp->lwp_wmesg : "?"),
96 lp->lwp_wchan);
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97 } else {
98 db_printf(" ");
99 }
100 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
08f2f1bb 101 db_dump_td_tokens(lp->lwp_thread);
984263bc 102
3e291793 103 lp = lwp_rb_tree_RB_NEXT(lp);
984263bc 104 }
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105
106 /*
107 * Dump running threads
108 */
96728c05 109 for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
96728c05 110 struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
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111 thread_t td;
112 int j;
96728c05 113
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114 if (db_more(&nl) < 0)
115 return;
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116 db_printf("cpu %d curthread %p reqflags %04x\n",
117 gd->gd_cpuid, gd->gd_curthread, gd->gd_reqflags);
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118 if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
119 db_printf(" PREEMPTING THREAD %p\n",
120 gd->gd_curthread->td_preempted);
121 }
79bfc874 122
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123 if (db_more(&nl) < 0)
124 return;
3f625015 125 db_printf(" INCOMING IPIQS:");
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126 for (j = 0; j < ncpus; ++j) {
127 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
128 if (ip != NULL) {
129 ip = &ip[cpuidx];
130 if (ip->ip_windex != ip->ip_rindex)
131 db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
132 }
133 }
134 db_printf("\n");
135
136 if (db_more(&nl) < 0)
137 return;
728faa08 138 db_printf(" tdq thread pid flags pri/cs/mp sp wmesg wchan comm\n");
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139 TAILQ_FOREACH(td, &gd->gd_tdrunq, td_threadq) {
140 if (db_more(&nl) < 0)
141 return;
728faa08 142 db_printf(" %p %3d %08x %2d/%02d %p %8.8s %p %s\n",
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143 td,
144 (td->td_proc ? td->td_proc->p_pid : -1),
145 td->td_flags,
146 td->td_pri,
147 td->td_critcount,
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148 td->td_sp,
149 td->td_wmesg ? td->td_wmesg : "-",
728faa08 150 td->td_wchan,
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151 td->td_proc ? td->td_proc->p_comm : td->td_comm);
152 if (td->td_preempted)
153 db_printf(" PREEMPTING THREAD %p\n", td->td_preempted);
154 db_dump_td_tokens(td);
96728c05 155 }
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156 if (db_more(&nl) < 0)
157 return;
96728c05 158 db_printf("\n");
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159 if (db_more(&nl) < 0)
160 return;
728faa08 161 db_printf(" tdq thread pid flags pri/cs/mp sp wmesg wchan comm\n");
96728c05 162 TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
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163 if (db_more(&nl) < 0)
164 return;
728faa08 165 db_printf(" %3d %p %3d %08x %2d/%02d %p %8.8s %p %s\n",
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166 np, td,
167 (td->td_proc ? td->td_proc->p_pid : -1),
e93c7fb5 168 td->td_flags,
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169 td->td_pri,
170 td->td_critcount,
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171 td->td_sp,
172 td->td_wmesg ? td->td_wmesg : "-",
728faa08 173 td->td_wchan,
96728c05 174 td->td_proc ? td->td_proc->p_comm : td->td_comm);
41a01a4d 175 db_dump_td_tokens(td);
96728c05 176 }
26a0694b 177 }
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178 if (db_more(&nl) < 0)
179 return;
52eedfb5 180 db_printf("CURCPU %d CURTHREAD %p (%d)\n",
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181 mycpu->gd_cpuid,
182 curthread,
52eedfb5 183 (curthread->td_proc ? curthread->td_proc->p_pid : -1));
41a01a4d 184 db_dump_td_tokens(curthread);
984263bc 185}
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186
187static void
188db_dump_td_tokens(thread_t td)
189{
190 lwkt_tokref_t ref;
191 lwkt_token_t tok;
192
3b998fa9 193 if (TD_TOKS_NOT_HELD(td))
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194 return;
195 db_printf(" TOKENS:");
3b998fa9 196 for (ref = &td->td_toks_base; ref < td->td_toks_stop; ++ref) {
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197 tok = ref->tr_tok;
198
199 db_printf(" %p[tok=%p", ref, ref->tr_tok);
dd55d707 200#ifdef SMP
f9235b6d 201 if (tok->t_ref && td == tok->t_ref->tr_owner)
41a01a4d 202 db_printf(",held");
dd55d707 203#endif
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204 db_printf("]");
205 }
206 db_printf("\n");
207}
208