5a43797524
If scheduler-locking is enabled, we're not going to be singlestepping any other previously stopped thread. * gdb.threads/hand-call-in-threads.exp: New file. * gdb.threads/hand-call-in-threads.c: New file.
160 lines
4.9 KiB
Text
160 lines
4.9 KiB
Text
# Copyright (C) 2004, 2007, 2008 Free Software Foundation, Inc.
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# Test making hand function calls in multiple threads.
|
|
|
|
set NR_THREADS 4
|
|
|
|
if $tracelevel then {
|
|
strace $tracelevel
|
|
}
|
|
|
|
set testfile "hand-call-in-threads"
|
|
set srcfile ${testfile}.c
|
|
set binfile ${objdir}/${subdir}/${testfile}
|
|
|
|
if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}" "additional_flags=-DNR_THREADS=$NR_THREADS"]] != "" } {
|
|
return -1
|
|
}
|
|
|
|
# Some targets can't do function calls, so don't even bother with this
|
|
# test.
|
|
if [target_info exists gdb,cannot_call_functions] {
|
|
setup_xfail "*-*-*" 2416
|
|
fail "This target can not call functions"
|
|
continue
|
|
}
|
|
|
|
proc get_dummy_frame_number { } {
|
|
global gdb_prompt
|
|
|
|
send_gdb "bt\n"
|
|
gdb_expect {
|
|
-re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $"
|
|
{
|
|
return $expect_out(1,string)
|
|
}
|
|
-re "$gdb_prompt $"
|
|
{
|
|
return ""
|
|
}
|
|
timeout
|
|
{
|
|
return ""
|
|
}
|
|
}
|
|
return ""
|
|
}
|
|
|
|
gdb_exit
|
|
gdb_start
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
|
gdb_load ${binfile}
|
|
|
|
if { ![runto_main] } {
|
|
fail "Can't run to main"
|
|
return 0
|
|
}
|
|
|
|
gdb_test "break all_threads_running" \
|
|
"Breakpoint 2 at .*: file .*${srcfile}, line .*" \
|
|
"breakpoint on all_threads_running"
|
|
|
|
gdb_test "break hand_call" \
|
|
"Breakpoint 3 at .*: file .*${srcfile}, line .*" \
|
|
"breakpoint on hand_call"
|
|
|
|
# Run the program and make sure GDB reports that we stopped after
|
|
# hitting breakpoint 2 in all_threads_running().
|
|
|
|
gdb_test "continue" \
|
|
".*Breakpoint 2, all_threads_running ().*" \
|
|
"run to all_threads_running"
|
|
|
|
# Before we start making hand function calls, turn on scheduler locking.
|
|
|
|
gdb_test "set scheduler-locking on" "" "enable scheduler locking"
|
|
gdb_test "show scheduler-locking" ".* locking scheduler .* is \"on\"." "show scheduler locking on"
|
|
|
|
# Now hand-call a function in each thread, having the function
|
|
# stop without returning.
|
|
|
|
# Add one for the main thread.
|
|
set total_nr_threads [expr $NR_THREADS + 1]
|
|
|
|
# Thread numbering in gdb is origin-1, so begin numbering at 1.
|
|
for { set i 1 } { $i <= $total_nr_threads } { incr i } {
|
|
set thread_nr $i
|
|
gdb_test "thread $thread_nr" "" "prepare to make hand call, thread $thread_nr"
|
|
gdb_test "call hand_call()" "Breakpoint 3, .*" "hand call, thread $thread_nr"
|
|
}
|
|
|
|
# Now have each hand-called function return.
|
|
|
|
# Turn confirmation off for the "return" command.
|
|
gdb_test "set confirm off" ""
|
|
|
|
clear_xfail "*-*-*"
|
|
|
|
for { set i 1 } { $i <= $total_nr_threads } { incr i } {
|
|
set thread_nr $i
|
|
gdb_test "thread $thread_nr" "" "prepare to discard hand call, thread $thread_nr"
|
|
set frame_number [get_dummy_frame_number]
|
|
if { "$frame_number" == "" } {
|
|
fail "dummy stack frame number, thread $thread_nr"
|
|
# Need something.
|
|
set frame_number 0
|
|
} else {
|
|
pass "dummy stack frame number, thread $thread_nr"
|
|
}
|
|
# Pop the dummy frame.
|
|
gdb_test "frame $frame_number" "" "setting frame, thread $thread_nr"
|
|
gdb_test "return" "" "discard hand call, thread $thread_nr"
|
|
# In case getting the dummy frame number failed, re-enable for next iter.
|
|
clear_xfail "*-*-*"
|
|
}
|
|
|
|
# Make sure all dummy frames got popped.
|
|
|
|
gdb_test_multiple "maint print dummy-frames" "all dummies popped" {
|
|
-re ".*stack=.*$gdb_prompt $" {
|
|
fail "all dummies popped"
|
|
}
|
|
-re ".*$gdb_prompt $" {
|
|
pass "all dummies popped"
|
|
}
|
|
}
|
|
|
|
# Before we resume the full program, turn of scheduler locking.
|
|
gdb_test "set scheduler-locking off" "" "disable scheduler locking"
|
|
gdb_test "show scheduler-locking" ".* locking scheduler .* is \"off\"." "show scheduler locking off"
|
|
|
|
# Continue one last time, the program should exit normally.
|
|
#
|
|
# ??? This currently doesn't work because gdb doesn't know how to singlestep
|
|
# over reported breakpoints that weren't in the last thread to run.
|
|
# Commented out until then.
|
|
#
|
|
# For reference sake ...
|
|
# An alternative is to manually work around the issue by manually setting
|
|
# the thread back to the first thread: the program is still at the
|
|
# all_threads_running breakpoint, which wasn't the last thread to run,
|
|
# and gdb doesn't know how to singlestep over reported breakpoints that
|
|
# weren't in the last thread to run.
|
|
#gdb_test "thread 1" "" "set thread to 1, prepare to resume"
|
|
#
|
|
#gdb_continue_to_end "hand-call-in-threads"
|
|
|
|
return 0
|