1# Copyright (C) 2004, 2007 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# Please email any bugs, comments, and/or additions to this file to:
17# bug-gdb@gnu.org
18
19# This file verifies that GDB is able to compute a backtrace for a thread
20# being blocked on a call to pthread_cond_wait().
21
22if $tracelevel then {
23	strace $tracelevel
24}
25
26set testfile "pthread_cond_wait"
27set srcfile ${testfile}.c
28set binfile ${objdir}/${subdir}/${testfile}
29
30if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
31    return -1
32}
33
34gdb_exit
35gdb_start
36gdb_reinitialize_dir $srcdir/$subdir
37gdb_load ${binfile}
38runto_main
39
40gdb_test "break break_me" \
41    "Breakpoint 2 at .*: file .*${srcfile}, line .*" \
42         "breakpoint on break_me"
43
44gdb_test "continue" \
45         ".*Breakpoint 2, break_me ().*" \
46         "run to break_me"
47
48#
49# Backtrace all threads, find the one running noreturn, and
50# verify that we are able to get a sensible backtrace, including
51# the frame for the pthread_cond_wait() call.
52#
53# The string below will only match if the functions named
54# occur in a single thread's backtrace, in the given order.
55#
56
57global hex
58global decimal
59
60#
61# This is a "backtrace break" ("btb"):
62#
63set btb "\[^\r\n\]+\[\r\n\]+\#${decimal}\[ \t\]+${hex} in "
64
65# One of the threads is blocked on a call to pthread_cond_wait, and
66# we want to verify that we are able to get a sensible backtrace for
67# that thread.  Because we don't know its thread ID, we can't switch
68# to it before doing the backtrace. So we get a backtrace for all
69# threads, and verify that one them returns the expected backtrace.
70gdb_test "thread apply all backtrace" \
71    "pthread_cond_wait${btb}cond_wait${btb}noreturn${btb}forever_pthread.*" \
72    "backtrace in blocked thread"
73
74