db_thread.c

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    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/5.3/sys/ddb/db_thread.c 131952 2004-07-10 23:47:20Z marcel $");
   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         db_printf("[thread %ld]\n", (long)kdb_thread->td_tid);
   45 }
   46 
   47 void
   48 db_set_thread(db_expr_t tid, boolean_t hastid, db_expr_t cnt, char *mod)
   49 {
   50         struct thread *thr;
   51         db_expr_t radix;
   52         int err;
   53 
   54         /*
   55          * We parse our own arguments. We don't like the default radix.
   56          */
   57         radix = db_radix;
   58         db_radix = 10;
   59         hastid = db_expression(&tid);
   60         db_radix = radix;
   61         db_skip_to_eol();
   62 
   63         if (hastid) {
   64                 thr = kdb_thr_lookup(tid);
   65                 if (thr != NULL) {
   66                         err = kdb_thr_select(thr);
   67                         if (err != 0) {
   68                                 db_printf("unable to switch to thread %ld\n",
   69                                     (long)thr->td_tid);
   70                                 return;
   71                         }
   72                         db_dot = PC_REGS();
   73                 } else {
   74                         db_printf("%d: invalid thread\n", (int)tid);
   75                         return;
   76                 }
   77         }
   78 
   79         db_print_thread();
   80         db_print_loc_and_inst(PC_REGS());
   81 }
   82 
   83 void
   84 db_show_threads(db_expr_t addr, boolean_t hasaddr, db_expr_t cnt, char *mod)
   85 {
   86         jmp_buf jb;
   87         void *prev_jb;
   88         struct thread *thr;
   89         int pager_quit;
   90 
   91         db_setup_paging(db_simple_pager, &pager_quit, DB_LINES_PER_PAGE);
   92 
   93         pager_quit = 0;
   94         thr = kdb_thr_first();
   95         while (!pager_quit && thr != NULL) {
   96                 db_printf("  %6ld (%p)  ", (long)thr->td_tid, thr);
   97                 prev_jb = kdb_jmpbuf(jb);
   98                 if (setjmp(jb) == 0) {
   99                         if (db_trace_thread(thr, 1) != 0)
  100                                 db_printf("***\n");
  101                 }
  102                 kdb_jmpbuf(prev_jb);
  103                 thr = kdb_thr_next(thr);
  104         }
  105 }

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FreeBSD/Linux Kernel Cross Reference sys/ddb/db_thread.c

FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_thread.c