1 # Copyright (C) 2004-2015 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.
22 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "additional_flags=-DNR_THREADS=$NR_THREADS"]] != "" } {
26 # Some targets can't do function calls, so don't even bother with this
28 if [target_info exists gdb,cannot_call_functions] {
29 setup_xfail "*-*-*" 2416
30 fail "This target can not call functions"
34 proc get_dummy_frame_number { } {
37 gdb_test_multiple "bt" "" {
38 -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
39 return $expect_out(1,string)
51 clean_restart ${binfile}
53 if { ![runto_main] } {
54 fail "Can't run to main"
58 gdb_test "break all_threads_running" \
59 "Breakpoint 2 at .*: file .*${srcfile}, line .*" \
60 "breakpoint on all_threads_running"
62 gdb_test "break hand_call" \
63 "Breakpoint 3 at .*: file .*${srcfile}, line .*" \
64 "breakpoint on hand_call"
66 # Run the program and make sure GDB reports that we stopped after
67 # hitting breakpoint 2 in all_threads_running().
70 ".*Breakpoint 2, all_threads_running ().*" \
71 "run to all_threads_running"
73 # Before we start making hand function calls, turn on scheduler locking.
75 gdb_test_no_output "set scheduler-locking on" "enable scheduler locking"
76 gdb_test "show scheduler-locking" ".* locking scheduler .* is \"on\"." "show scheduler locking on"
78 # Now hand-call a function in each thread, having the function
79 # stop without returning.
81 # Add one for the main thread.
82 set total_nr_threads [expr $NR_THREADS + 1]
84 # Thread numbering in gdb is origin-1, so begin numbering at 1.
85 for { set i 1 } { $i <= $total_nr_threads } { incr i } {
87 gdb_test "thread $thread_nr" \
88 ".*Switching to thread $thread_nr.*" \
89 "prepare to make hand call, thread $thread_nr"
90 gdb_test_multiple "call hand_call()" "" {
91 -re "Breakpoint 3, .*$gdb_prompt $" {
92 pass "hand call, thread $thread_nr"
95 fail "hand call, thread $thread_nr (got gdb prompt)"
98 # If the target fails to stop at the breakpoint, it just ends
99 # up in an infinite loop in hand_call(). If this happens
100 # and we have lost the GDB prompt, no further tests in
101 # this file will work and there is no point in continuing.
102 fail "hand call, thread $thread_nr (runaway target)"
108 # Now have each hand-called function return.
110 # Turn confirmation off for the "return" command.
111 gdb_test_no_output "set confirm off"
115 for { set i 1 } { $i <= $total_nr_threads } { incr i } {
117 gdb_test "thread $thread_nr" ".*" \
118 "prepare to discard hand call, thread $thread_nr"
119 set frame_number [get_dummy_frame_number]
120 if { "$frame_number" == "" } {
121 fail "dummy stack frame number, thread $thread_nr"
125 pass "dummy stack frame number, thread $thread_nr"
127 # Pop the dummy frame.
128 gdb_test "frame $frame_number" ".*" "setting frame, thread $thread_nr"
129 gdb_test "return" ".*" "discard hand call, thread $thread_nr"
130 # In case getting the dummy frame number failed, re-enable for next iter.
134 # Make sure all dummy frames got popped.
136 gdb_test_multiple "maint print dummy-frames" "all dummies popped" {
137 -re ".*stack=.*$gdb_prompt $" {
138 fail "all dummies popped"
140 -re ".*$gdb_prompt $" {
141 pass "all dummies popped"
145 # Before we resume the full program, turn off scheduler locking.
146 gdb_test_no_output "set scheduler-locking off" "disable scheduler locking"
147 gdb_test "show scheduler-locking" ".* locking scheduler .* is \"off\"." "show scheduler locking off"
149 # Continue one last time, the program should exit normally.
151 # ??? This currently doesn't work because gdb doesn't know how to singlestep
152 # over reported breakpoints that weren't in the last thread to run.
153 # Commented out until then.
155 # For reference sake ...
156 # An alternative is to manually work around the issue by manually setting
157 # the thread back to the first thread: the program is still at the
158 # all_threads_running breakpoint, which wasn't the last thread to run,
159 # and gdb doesn't know how to singlestep over reported breakpoints that
160 # weren't in the last thread to run.
161 #gdb_test "thread 1" ".*" "set thread to 1, prepare to resume"
163 #gdb_continue_to_end "hand-call-in-threads"