Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_ps.c
Version:
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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. 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 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 = &CPU_prvspace[cpuidx].mdglobaldata.mi; 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 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
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