1 # Copyright (C) 2004-2016 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 unsupported "this target can not call functions"
33 proc get_dummy_frame_number { } {
36 gdb_test_multiple "bt" "" {
37 -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
38 return $expect_out(1,string)
50 clean_restart ${binfile}
52 if { ![runto_main] } {
53 fail "can't run to main"
57 gdb_test "break all_threads_running" \
58 "Breakpoint 2 at .*: file .*${srcfile}, line .*" \
59 "breakpoint on all_threads_running"
61 gdb_test "break hand_call" \
62 "Breakpoint 3 at .*: file .*${srcfile}, line .*" \
63 "breakpoint on hand_call"
65 # Run the program and make sure GDB reports that we stopped after
66 # hitting breakpoint 2 in all_threads_running().
69 ".*Breakpoint 2, all_threads_running ().*" \
70 "run to all_threads_running"
72 # Before we start making hand function calls, turn on scheduler locking.
74 gdb_test_no_output "set scheduler-locking on" "enable scheduler locking"
75 gdb_test "show scheduler-locking" ".* locking scheduler .* is \"on\"." "show scheduler locking on"
77 # Now hand-call a function in each thread, having the function
78 # stop without returning.
80 # Add one for the main thread.
81 set total_nr_threads [expr $NR_THREADS + 1]
83 # Thread numbering in gdb is origin-1, so begin numbering at 1.
84 for { set i 1 } { $i <= $total_nr_threads } { incr i } {
86 gdb_test "thread $thread_nr" \
87 ".*Switching to thread $thread_nr.*" \
88 "prepare to make hand call, thread $thread_nr"
89 gdb_test_multiple "call hand_call()" "" {
90 -re "Breakpoint 3, .*$gdb_prompt $" {
91 pass "hand call, thread $thread_nr"
94 fail "hand call, thread $thread_nr (got gdb prompt)"
97 # If the target fails to stop at the breakpoint, it just ends
98 # up in an infinite loop in hand_call(). If this happens
99 # and we have lost the GDB prompt, no further tests in
100 # this file will work and there is no point in continuing.
101 fail "hand call, thread $thread_nr (runaway target)"
107 # Now have each hand-called function return.
109 # Turn confirmation off for the "return" command.
110 gdb_test_no_output "set confirm off"
114 for { set i 1 } { $i <= $total_nr_threads } { incr i } {
116 gdb_test "thread $thread_nr" ".*" \
117 "prepare to discard hand call, thread $thread_nr"
118 set frame_number [get_dummy_frame_number]
119 if { "$frame_number" == "" } {
120 fail "dummy stack frame number, thread $thread_nr"
124 pass "dummy stack frame number, thread $thread_nr"
126 # Pop the dummy frame.
127 gdb_test "frame $frame_number" ".*" "setting frame, thread $thread_nr"
128 gdb_test "return" ".*" "discard hand call, thread $thread_nr"
129 # In case getting the dummy frame number failed, re-enable for next iter.
133 # Make sure all dummy frames got popped.
135 gdb_test_multiple "maint print dummy-frames" "all dummies popped" {
136 -re ".*stack=.*$gdb_prompt $" {
137 fail "all dummies popped"
139 -re ".*$gdb_prompt $" {
140 pass "all dummies popped"
144 # Before we resume the full program, turn off scheduler locking.
145 gdb_test_no_output "set scheduler-locking off" "disable scheduler locking"
146 gdb_test "show scheduler-locking" ".* locking scheduler .* is \"off\"." "show scheduler locking off"
148 # Continue one last time, the program should exit normally.
150 # ??? This currently doesn't work because gdb doesn't know how to singlestep
151 # over reported breakpoints that weren't in the last thread to run.
152 # Commented out until then.
154 # For reference sake ...
155 # An alternative is to manually work around the issue by manually setting
156 # the thread back to the first thread: the program is still at the
157 # all_threads_running breakpoint, which wasn't the last thread to run,
158 # and gdb doesn't know how to singlestep over reported breakpoints that
159 # weren't in the last thread to run.
160 #gdb_test "thread 1" ".*" "set thread to 1, prepare to resume"
162 #gdb_continue_to_end "hand-call-in-threads"