kernel - lwkt_token revamp
[dragonfly.git] / sys / ddb / db_ps.c
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 $
34  * $DragonFly: src/sys/ddb/db_ps.c,v 1.25 2008/06/29 21:38:21 dillon Exp $
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
43 static void db_dump_td_tokens(thread_t td);
44
45 void
46 db_ps(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3, char *dummy4)
47 {
48         int np;
49         int cpuidx;
50         int nl = 0;
51         volatile struct proc *p, *pp;
52         struct lwp *lp;
53
54         np = nprocs;
55
56         if (allproc.lh_first != NULL)
57                 p = allproc.lh_first;
58         else
59                 p = &proc0;
60         lp = FIRST_LWP_IN_PROC(__DEVOLATILE(struct proc *, p));
61
62         if (db_more(&nl) < 0)
63             return;
64         db_printf("  pid      lwp  uid  ppid  pgrp  pflag  lflag stat  wmesg    wchan cmd\n");
65         for (;;) {
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                 }
75                 /*
76                  * XXX just take 20 for now...
77                  */
78                 if (db_more(&nl) < 0)
79                         return;
80                 if (p == NULL) {
81                         kprintf("oops, ran out of processes early!\n");
82                         break;
83                 }
84                 pp = p->p_pptr;
85                 if (pp == NULL)
86                         pp = p;
87
88                 db_printf("%5d %8p %4d %5d %5d %06x %06x  %d %d",
89                     p->p_pid, (volatile void *)lp,
90                     p->p_ucred ? p->p_ucred->cr_ruid : 0, pp->p_pid,
91                     p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag,
92                     lp->lwp_flag, p->p_stat, lp->lwp_stat);
93                 if (lp->lwp_wchan) {
94                         db_printf(" %6s %8p",
95                                 (lp->lwp_wmesg ? lp->lwp_wmesg : "?"),
96                                 lp->lwp_wchan);
97                 } else {
98                         db_printf("                 ");
99                 }
100                 db_printf(" %s\n", p->p_comm ? p->p_comm : "");
101                 db_dump_td_tokens(lp->lwp_thread);
102
103                 lp = lwp_rb_tree_RB_NEXT(lp);
104         }
105
106         /*
107          * Dump running threads
108          */
109         for (cpuidx = 0; cpuidx < ncpus; ++cpuidx) {
110             struct globaldata *gd = &CPU_prvspace[cpuidx].mdglobaldata.mi;
111             thread_t td;
112             int j;
113
114             if (db_more(&nl) < 0)
115                 return;
116             db_printf("cpu %d tdrunqmask %08x curthread %p reqflags %04x\n",
117                     gd->gd_cpuid, gd->gd_runqmask,
118                     gd->gd_curthread, gd->gd_reqflags);
119             if (gd->gd_curthread && gd->gd_curthread->td_preempted) {
120                     db_printf("       PREEMPTING THREAD %p\n",
121                                 gd->gd_curthread->td_preempted);
122             }
123
124             if (db_more(&nl) < 0)
125                 return;
126             db_printf("      INCOMING IPIQS:");
127             for (j = 0; j < ncpus; ++j) {
128                 lwkt_ipiq_t ip = globaldata_find(j)->gd_ipiq;
129                 if (ip != NULL) {
130                     ip = &ip[cpuidx];
131                     if (ip->ip_windex != ip->ip_rindex)
132                         db_printf(" cpu%d:%d", j, ip->ip_windex - ip->ip_rindex);
133                 }
134             }
135             db_printf("\n");
136
137             if (db_more(&nl) < 0)
138                 return;
139             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
140             for (np = 0; np < 32; ++np) {
141                 TAILQ_FOREACH(td, &gd->gd_tdrunq[np], td_threadq) {
142                     if (db_more(&nl) < 0)
143                         return;
144                     db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
145                         np, td, 
146                         (td->td_proc ? td->td_proc->p_pid : -1),
147                         td->td_flags, 
148                         td->td_pri & TDPRI_MASK,
149                         td->td_pri / TDPRI_CRIT,
150 #ifdef SMP
151                         td->td_mpcount,
152 #else
153                         0,
154 #endif
155                         td->td_sp,
156                         td->td_wmesg ? td->td_wmesg : "-",
157                         td->td_proc ? td->td_proc->p_comm : td->td_comm);
158                     if (td->td_preempted)
159                         db_printf("  PREEMPTING THREAD %p\n", td->td_preempted);
160                     db_dump_td_tokens(td);
161                 }
162             }
163             if (db_more(&nl) < 0)
164                 return;
165             db_printf("\n");
166             if (db_more(&nl) < 0)
167                 return;
168             db_printf("  tdq     thread pid    flags pri/cs/mp        sp    wmesg comm\n");
169             TAILQ_FOREACH(td, &gd->gd_tdallq, td_allq) {
170                 if (db_more(&nl) < 0)
171                     return;
172                 db_printf("  %3d %p %3d %08x %2d/%02d/%02d %p %8.8s %s\n",
173                     np, td, 
174                     (td->td_proc ? td->td_proc->p_pid : -1),
175                     td->td_flags,
176                     td->td_pri & TDPRI_MASK,
177                     td->td_pri / TDPRI_CRIT,
178 #ifdef SMP
179                     td->td_mpcount,
180 #else
181                     0,
182 #endif
183                     td->td_sp,
184                     td->td_wmesg ? td->td_wmesg : "-",
185                     td->td_proc ? td->td_proc->p_comm : td->td_comm);
186                 db_dump_td_tokens(td);
187             }
188         }
189         if (db_more(&nl) < 0)
190             return;
191         db_printf("CURCPU %d CURTHREAD %p (%d)\n",
192             mycpu->gd_cpuid,
193             curthread,
194             (curthread->td_proc ? curthread->td_proc->p_pid : -1));
195         db_dump_td_tokens(curthread);
196 }
197
198 static void
199 db_dump_td_tokens(thread_t td)
200 {
201         lwkt_tokref_t ref;
202         lwkt_token_t tok;
203
204         if (TD_TOKS_NOT_HELD(td))
205                 return;
206         db_printf("    TOKENS:");
207         for (ref = &td->td_toks_base; ref < td->td_toks_stop; ++ref) {
208                 tok = ref->tr_tok;
209
210                 db_printf(" %p[tok=%p", ref, ref->tr_tok);
211 #ifdef SMP
212                 if (td == tok->t_ref->tr_owner)
213                     db_printf(",held");
214 #endif
215                 db_printf("]");
216         }
217         db_printf("\n");
218 }
219