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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/sys/ddb/db_ps.c,v 1.20 1999/08/28 00:41:09 peter Exp $
30 */
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/proc.h>
34 #include <sys/cons.h>
35
36 #include <ddb/ddb.h>
37
38 static void db_dump_td_tokens(thread_t td);
39
40 void
db_ps(db_expr_t dummy1,boolean_t dummy2,db_expr_t dummy3,char * dummy4)41 db_ps(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
42 {
43 int np;
44 int cpuidx;
45 int nl = 0;
46
47 np = nprocs;
48
49 #if 0
50 if (allproc.lh_first != NULL)
51 p = allproc.lh_first;
52 else
53 p = &proc0;
54 lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
55
56 if (db_more(&nl) < 0)
57 return;
58 db_printf(" pid lwp uid ppid pgrp pflags lflags stat wmesg wchan cmd\n");
59 for (;;) {
60 while (lp == NULL) {
61 --np;
62 p = p->p_list.le_next;
63 if (p == NULL && np > 0)
64 p = zombproc.lh_first;
65 if (p == NULL)
66 break;
67 lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
68 }
69 /*
70 * XXX just take 20 for now...
71 */
72 if (db_more(&nl) < 0)
73 return;
74 if (p == NULL) {
75 kprintf("oops, ran out of processes early!\n");
76 break;
77 }
78 pp = p->p_pptr;
79 if (pp == NULL)
80 pp = p;
81
82 db_printf("%5d %8p %4d %5d %5d %06x %06x %d %d",
83 p->p_pid, (volatile void *)lp,
84 p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
85 p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flags,
86 lp->lwp_flags, p->p_stat, lp->lwp_stat);
87 if (lp->lwp_wchan) {
88 db_printf(" %6s %8p",
89 (lp->lwp_wmesg ? lp->lwp_wmesg : "?"),
90 lp->lwp_wchan);
91 } else {
92 db_printf(" ");
93 }
94 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
95 db_dump_td_tokens(lp->lwp_thread);
96
97 lp = lwp_rb_tree_RB_NEXT(lp);
98 }
99 #endif
100
101 /*
102 * Dump running threads
103 */
104 for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
105 struct globaldata *gd = globaldata_find(cpuidx);
106 thread_t td;
107 int j;
108
109 if (db_more(&nl) < 0)
110 return;
111 db_printf("cpu %d curthread %p reqflags %04x\n",
112 gd->gd_cpuid, gd->gd_curthread, gd->gd_reqflags);
113 if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
114 db_printf(" PREEMPTING THREAD %p\n",
115 gd->gd_curthread->td_preempted);
116 }
117
118 if (db_more(&nl) < 0)
119 return;
120 db_printf(" INCOMING IPIQS:");
121 for (j = 0; j < ncpus; ++j) {
122 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
123 if (ip != NULL) {
124 ip = &ip[cpuidx];
125 if (ip->ip_windex != ip->ip_rindex)
126 db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
127 }
128 }
129 db_printf("\n");
130
131 if (db_more(&nl) < 0)
132 return;
133 db_printf(" tdq thread pid flags pri/cs/mp sp wmesg wchan comm\n");
134 TAILQ_FOREACH(td, &gd->gd_tdrunq, td_threadq) {
135 if (db_more(&nl) < 0)
136 return;
137 db_printf(" %p %3d %08x %2d/%02d %p %8.8s %p %s\n",
138 td,
139 (td->td_proc ? td->td_proc->p_pid : -1),
140 td->td_flags,
141 td->td_pri,
142 td->td_critcount,
143 td->td_sp,
144 td->td_wmesg ? td->td_wmesg : "-",
145 td->td_wchan,
146 td->td_proc ? td->td_proc->p_comm : td->td_comm);
147 if (td->td_preempted)
148 db_printf(" PREEMPTING THREAD %p\n", td->td_preempted);
149 db_dump_td_tokens(td);
150 }
151 if (db_more(&nl) < 0)
152 return;
153 db_printf("\n");
154 if (db_more(&nl) < 0)
155 return;
156 db_printf(" tdq thread pid flags pri/cs/mp sp wmesg wchan comm\n");
157 TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
158 if (td->td_flags & TDF_MARKER)
159 continue;
160 if (db_more(&nl) < 0)
161 return;
162 db_printf(" %3d %p %3d %08x %2d/%02d %p %8.8s %p %s\n",
163 np, td,
164 (td->td_proc ? td->td_proc->p_pid : -1),
165 td->td_flags,
166 td->td_pri,
167 td->td_critcount,
168 td->td_sp,
169 td->td_wmesg ? td->td_wmesg : "-",
170 td->td_wchan,
171 td->td_proc ? td->td_proc->p_comm : td->td_comm);
172 db_dump_td_tokens(td);
173 }
174 }
175 if (db_more(&nl) < 0)
176 return;
177 db_printf("CURCPU %d CURTHREAD %p (%d)\n",
178 mycpu->gd_cpuid,
179 curthread,
180 (curthread->td_proc ? curthread->td_proc->p_pid : -1));
181 db_dump_td_tokens(curthread);
182 }
183
184 static void
db_dump_td_tokens(thread_t td)185 db_dump_td_tokens(thread_t td)
186 {
187 lwkt_tokref_t ref;
188 lwkt_token_t tok;
189
190 if (TD_TOKS_NOT_HELD(td))
191 return;
192 db_printf(" TOKENS:");
193 for (ref = &td->td_toks_base; ref < td->td_toks_stop; ++ref) {
194 tok = ref->tr_tok;
195
196 db_printf(" %p[tok=%p", ref, ref->tr_tok);
197 if (tok->t_ref && td == tok->t_ref->tr_owner)
198 db_printf(",held");
199 db_printf("]");
200 }
201 db_printf("\n");
202 }
203
204