160 lines
4.9 KiB
Text
160 lines
4.9 KiB
Text
# Copyright (C) 2004, 2007-2008, 2010-2012 Free Software Foundation,
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# Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test making hand function calls in multiple threads.
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set NR_THREADS 4
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if $tracelevel then {
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strace $tracelevel
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}
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set testfile "hand-call-in-threads"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}" "additional_flags=-DNR_THREADS=$NR_THREADS"]] != "" } {
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return -1
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}
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# Some targets can't do function calls, so don't even bother with this
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# test.
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if [target_info exists gdb,cannot_call_functions] {
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setup_xfail "*-*-*" 2416
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fail "This target can not call functions"
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continue
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}
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proc get_dummy_frame_number { } {
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global gdb_prompt
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gdb_test_multiple "bt" "" {
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-re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
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return $expect_out(1,string)
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}
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-re "$gdb_prompt $" {
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return ""
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}
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timeout {
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return ""
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}
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}
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return ""
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}
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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if { ![runto_main] } {
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fail "Can't run to main"
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return 0
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}
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gdb_test "break all_threads_running" \
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"Breakpoint 2 at .*: file .*${srcfile}, line .*" \
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"breakpoint on all_threads_running"
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gdb_test "break hand_call" \
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"Breakpoint 3 at .*: file .*${srcfile}, line .*" \
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"breakpoint on hand_call"
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# Run the program and make sure GDB reports that we stopped after
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# hitting breakpoint 2 in all_threads_running().
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gdb_test "continue" \
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".*Breakpoint 2, all_threads_running ().*" \
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"run to all_threads_running"
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# Before we start making hand function calls, turn on scheduler locking.
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gdb_test_no_output "set scheduler-locking on" "enable scheduler locking"
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gdb_test "show scheduler-locking" ".* locking scheduler .* is \"on\"." "show scheduler locking on"
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# Now hand-call a function in each thread, having the function
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# stop without returning.
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# Add one for the main thread.
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set total_nr_threads [expr $NR_THREADS + 1]
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# Thread numbering in gdb is origin-1, so begin numbering at 1.
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for { set i 1 } { $i <= $total_nr_threads } { incr i } {
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set thread_nr $i
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gdb_test "thread $thread_nr" ".*" \
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"prepare to make hand call, thread $thread_nr"
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gdb_test "call hand_call()" "Breakpoint 3, .*" \
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"hand call, thread $thread_nr"
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}
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# Now have each hand-called function return.
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# Turn confirmation off for the "return" command.
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gdb_test_no_output "set confirm off"
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clear_xfail "*-*-*"
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for { set i 1 } { $i <= $total_nr_threads } { incr i } {
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set thread_nr $i
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gdb_test "thread $thread_nr" ".*" \
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"prepare to discard hand call, thread $thread_nr"
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set frame_number [get_dummy_frame_number]
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if { "$frame_number" == "" } {
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fail "dummy stack frame number, thread $thread_nr"
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# Need something.
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set frame_number 0
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} else {
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pass "dummy stack frame number, thread $thread_nr"
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}
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# Pop the dummy frame.
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gdb_test "frame $frame_number" ".*" "setting frame, thread $thread_nr"
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gdb_test "return" ".*" "discard hand call, thread $thread_nr"
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# In case getting the dummy frame number failed, re-enable for next iter.
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clear_xfail "*-*-*"
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}
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# Make sure all dummy frames got popped.
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gdb_test_multiple "maint print dummy-frames" "all dummies popped" {
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-re ".*stack=.*$gdb_prompt $" {
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fail "all dummies popped"
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}
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-re ".*$gdb_prompt $" {
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pass "all dummies popped"
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}
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}
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# Before we resume the full program, turn off scheduler locking.
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gdb_test_no_output "set scheduler-locking off" "disable scheduler locking"
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gdb_test "show scheduler-locking" ".* locking scheduler .* is \"off\"." "show scheduler locking off"
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# Continue one last time, the program should exit normally.
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#
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# ??? This currently doesn't work because gdb doesn't know how to singlestep
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# over reported breakpoints that weren't in the last thread to run.
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# Commented out until then.
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#
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# For reference sake ...
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# An alternative is to manually work around the issue by manually setting
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# the thread back to the first thread: the program is still at the
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# all_threads_running breakpoint, which wasn't the last thread to run,
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# and gdb doesn't know how to singlestep over reported breakpoints that
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# weren't in the last thread to run.
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#gdb_test "thread 1" ".*" "set thread to 1, prepare to resume"
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#
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#gdb_continue_to_end "hand-call-in-threads"
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return 0
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