1 # Copyright (C) 2004, 2007, 2008, 2010 Free Software Foundation, Inc.
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.
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.
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/>.
16 # Test making hand function calls in multiple threads.
24 set testfile "hand-call-in-threads"
25 set srcfile ${testfile}.c
26 set binfile ${objdir}/${subdir}/${testfile}
28 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}" "additional_flags=-DNR_THREADS=$NR_THREADS"]] != "" } {
32 # Some targets can't do function calls, so don't even bother with this
34 if [target_info exists gdb,cannot_call_functions] {
35 setup_xfail "*-*-*" 2416
36 fail "This target can not call functions"
40 proc get_dummy_frame_number { } {
43 gdb_test_multiple "bt" "" {
44 -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
45 return $expect_out(1,string)
59 gdb_reinitialize_dir $srcdir/$subdir
62 if { ![runto_main] } {
63 fail "Can't run to main"
67 gdb_test "break all_threads_running" \
68 "Breakpoint 2 at .*: file .*${srcfile}, line .*" \
69 "breakpoint on all_threads_running"
71 gdb_test "break hand_call" \
72 "Breakpoint 3 at .*: file .*${srcfile}, line .*" \
73 "breakpoint on hand_call"
75 # Run the program and make sure GDB reports that we stopped after
76 # hitting breakpoint 2 in all_threads_running().
79 ".*Breakpoint 2, all_threads_running ().*" \
80 "run to all_threads_running"
82 # Before we start making hand function calls, turn on scheduler locking.
84 gdb_test_no_output "set scheduler-locking on" "enable scheduler locking"
85 gdb_test "show scheduler-locking" ".* locking scheduler .* is \"on\"." "show scheduler locking on"
87 # Now hand-call a function in each thread, having the function
88 # stop without returning.
90 # Add one for the main thread.
91 set total_nr_threads [expr $NR_THREADS + 1]
93 # Thread numbering in gdb is origin-1, so begin numbering at 1.
94 for { set i 1 } { $i <= $total_nr_threads } { incr i } {
96 gdb_test "thread $thread_nr" "" "prepare to make hand call, thread $thread_nr"
97 gdb_test "call hand_call()" "Breakpoint 3, .*" "hand call, thread $thread_nr"
100 # Now have each hand-called function return.
102 # Turn confirmation off for the "return" command.
103 gdb_test_no_output "set confirm off"
107 for { set i 1 } { $i <= $total_nr_threads } { incr i } {
109 gdb_test "thread $thread_nr" "" "prepare to discard hand call, thread $thread_nr"
110 set frame_number [get_dummy_frame_number]
111 if { "$frame_number" == "" } {
112 fail "dummy stack frame number, thread $thread_nr"
116 pass "dummy stack frame number, thread $thread_nr"
118 # Pop the dummy frame.
119 gdb_test "frame $frame_number" "" "setting frame, thread $thread_nr"
120 gdb_test "return" "" "discard hand call, thread $thread_nr"
121 # In case getting the dummy frame number failed, re-enable for next iter.
125 # Make sure all dummy frames got popped.
127 gdb_test_multiple "maint print dummy-frames" "all dummies popped" {
128 -re ".*stack=.*$gdb_prompt $" {
129 fail "all dummies popped"
131 -re ".*$gdb_prompt $" {
132 pass "all dummies popped"
136 # Before we resume the full program, turn off scheduler locking.
137 gdb_test_no_output "set scheduler-locking off" "disable scheduler locking"
138 gdb_test "show scheduler-locking" ".* locking scheduler .* is \"off\"." "show scheduler locking off"
140 # Continue one last time, the program should exit normally.
142 # ??? This currently doesn't work because gdb doesn't know how to singlestep
143 # over reported breakpoints that weren't in the last thread to run.
144 # Commented out until then.
146 # For reference sake ...
147 # An alternative is to manually work around the issue by manually setting
148 # the thread back to the first thread: the program is still at the
149 # all_threads_running breakpoint, which wasn't the last thread to run,
150 # and gdb doesn't know how to singlestep over reported breakpoints that
151 # weren't in the last thread to run.
152 #gdb_test "thread 1" "" "set thread to 1, prepare to resume"
154 #gdb_continue_to_end "hand-call-in-threads"