FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_thread.c
1 /*-
2 * Copyright (c) 2004 Marcel Moolenaar
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 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/6.0/sys/ddb/db_thread.c 139747 2005-01-06 01:34:41Z imp $");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kdb.h>
33 #include <sys/proc.h>
34
35 #include <machine/pcb.h>
36
37 #include <ddb/ddb.h>
38 #include <ddb/db_command.h>
39 #include <ddb/db_sym.h>
40
41 void
42 db_print_thread(void)
43 {
44 pid_t pid;
45
46 pid = -1;
47 if (kdb_thread->td_proc != NULL)
48 pid = kdb_thread->td_proc->p_pid;
49 db_printf("[thread pid %d tid %ld ]\n", pid, (long)kdb_thread->td_tid);
50 }
51
52 void
53 db_set_thread(db_expr_t tid, boolean_t hastid, db_expr_t cnt, char *mod)
54 {
55 struct thread *thr;
56 db_expr_t radix;
57 int err;
58
59 /*
60 * We parse our own arguments. We don't like the default radix.
61 */
62 radix = db_radix;
63 db_radix = 10;
64 hastid = db_expression(&tid);
65 db_radix = radix;
66 db_skip_to_eol();
67
68 if (hastid) {
69 thr = kdb_thr_lookup(tid);
70 if (thr != NULL) {
71 err = kdb_thr_select(thr);
72 if (err != 0) {
73 db_printf("unable to switch to thread %ld\n",
74 (long)thr->td_tid);
75 return;
76 }
77 db_dot = PC_REGS();
78 } else {
79 db_printf("%d: invalid thread\n", (int)tid);
80 return;
81 }
82 }
83
84 db_print_thread();
85 db_print_loc_and_inst(PC_REGS());
86 }
87
88 void
89 db_show_threads(db_expr_t addr, boolean_t hasaddr, db_expr_t cnt, char *mod)
90 {
91 jmp_buf jb;
92 void *prev_jb;
93 struct thread *thr;
94 int pager_quit;
95
96 db_setup_paging(db_simple_pager, &pager_quit, db_lines_per_page);
97
98 pager_quit = 0;
99 thr = kdb_thr_first();
100 while (!pager_quit && thr != NULL) {
101 db_printf(" %6ld (%p) ", (long)thr->td_tid, thr);
102 prev_jb = kdb_jmpbuf(jb);
103 if (setjmp(jb) == 0) {
104 if (db_trace_thread(thr, 1) != 0)
105 db_printf("***\n");
106 }
107 kdb_jmpbuf(prev_jb);
108 thr = kdb_thr_next(thr);
109 }
110 }
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