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# Copyright (C) 2016-2018 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/>.
# Regression test for PR threads/19461 (strange "info thread" behavior
# in non-stop). GDB used to miss updating the parent/child running
# states after a fork.
standard_testfile
# The test proper.
proc do_test { detach_on_fork follow_fork non_stop schedule_multiple } {
global GDBFLAGS
global srcfile testfile
global gdb_prompt
save_vars { GDBFLAGS } {
append GDBFLAGS " -ex \"set non-stop $non_stop\""
if {[prepare_for_testing "failed to prepare" \
$testfile $srcfile {debug}] == -1} {
return -1
}
}
if ![runto_main] then {
fail "can't run to main"
return 0
}
# If debugging with target remote, check whether the all-stop
# variant of the RSP is being used. If so, we can't run the
# all-stop tests.
if { [target_info exists gdb_protocol]
&& ([target_info gdb_protocol] == "remote"
|| [target_info gdb_protocol] == "extended-remote")} {
set test "maint show target-non-stop"
gdb_test_multiple "maint show target-non-stop" $test {
-re "(is|currently) on.*$gdb_prompt $" {
}
-re "(is|currently) off.*$gdb_prompt $" {
unsupported "can't issue info threads while target is running"
return 0
}
}
}
# We want to catch "[New inferior ...]" below, to avoid sleeping.
if {$detach_on_fork == "off" || $follow_fork == "child"} {
gdb_test_no_output "set print inferior-events on"
}
gdb_test_no_output "set detach-on-fork $detach_on_fork"
gdb_test_no_output "set follow-fork $follow_fork"
if {$non_stop == "off"} {
gdb_test_no_output "set schedule-multiple $schedule_multiple"
}
set test "continue &"
gdb_test_multiple $test $test {
-re "$gdb_prompt " {
pass $test
}
}
if {$detach_on_fork == "off" || $follow_fork == "child"} {
set test "fork child appears"
gdb_test_multiple "" $test {
-re "\\\[New inferior " {
pass $test
}
}
} else {
# All we can do is wait a little bit for the parent to fork.
sleep 1
}
set not_nl "\[^\r\n\]*"
if {$detach_on_fork == "on" && $non_stop == "on" && $follow_fork == "child"} {
gdb_test "info threads" \
" 2.1 ${not_nl}\\\(running\\\).*No selected thread.*"
} elseif {$detach_on_fork == "on" && $follow_fork == "child"} {
gdb_test "info threads" \
"\\\* 2.1 ${not_nl}\\\(running\\\)"
} elseif {$detach_on_fork == "on"} {
gdb_test "info threads" \
"\\\* 1 ${not_nl}\\\(running\\\)"
} elseif {$non_stop == "on"
|| ($schedule_multiple == "on" && $follow_fork == "parent")} {
# Both parent and child should be marked running, and the
# parent should be selected.
gdb_test "info threads" \
[multi_line \
"\\\* 1.1 ${not_nl} \\\(running\\\)${not_nl}" \
" 2.1 ${not_nl} \\\(running\\\)"]
} elseif {$schedule_multiple == "on" && $follow_fork == "child"} {
# Both parent and child should be marked running, and the
# child should be selected.
gdb_test "info threads" \
[multi_line \
" 1.1 ${not_nl} \\\(running\\\)${not_nl}" \
"\\\* 2.1 ${not_nl} \\\(running\\\)"]
} else {
set test "only $follow_fork marked running"
gdb_test_multiple "info threads" $test {
-re "\\\(running\\\)${not_nl}\\\(running\\\)\r\n$gdb_prompt $" {
fail $test
}
-re "\\\* 1.1 ${not_nl}\\\(running\\\)\r\n 2.1 ${not_nl}\r\n$gdb_prompt $" {
gdb_assert [string eq $follow_fork "parent"] $test
}
-re "1.1 ${not_nl}\r\n\\\* 2.1 ${not_nl}\\\(running\\\)\r\n$gdb_prompt $" {
gdb_assert [string eq $follow_fork "child"] $test
}
}
}
# We don't want to see "Inferior exited" in reaction to the kills.
gdb_test_no_output "set print inferior-events off"
# Kill both parent and child.
if {$detach_on_fork == "off" || $follow_fork == "parent"} {
gdb_test_no_output "kill inferior 1" "kill parent"
}
if {$detach_on_fork == "off" || $follow_fork == "child"} {
gdb_test_no_output "kill inferior 2" "kill child"
}
}
# Exercise all permutations of:
#
# set detach-on-fork off|on
# set follow-fork parent|child
# set non-stop on|off
# set schedule-multiple on|off
foreach_with_prefix detach-on-fork {"off" "on"} {
foreach_with_prefix follow-fork {"parent" "child"} {
with_test_prefix "non-stop" {
do_test ${detach-on-fork} ${follow-fork} "on" "-"
}
with_test_prefix "all-stop" {
foreach_with_prefix schedule-multiple {"on" "off"} {
do_test ${detach-on-fork} ${follow-fork} "off" ${schedule-multiple}
}
}
}
}
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