1# Copyright (C) 2016-2023 Free Software Foundation, Inc. 2 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. 7# 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. 12# 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/>. 15 16# Regression test for PR threads/19461 (strange "info thread" behavior 17# in non-stop). GDB used to miss updating the parent/child running 18# states after a fork. 19 20standard_testfile 21 22# The test proper. 23 24proc do_test { detach_on_fork follow_fork non_stop schedule_multiple } { 25 global GDBFLAGS 26 global srcfile testfile 27 global gdb_prompt 28 29 save_vars { GDBFLAGS } { 30 append GDBFLAGS " -ex \"set non-stop $non_stop\"" 31 32 if {[prepare_for_testing "failed to prepare" \ 33 $testfile $srcfile {debug}] == -1} { 34 return -1 35 } 36 } 37 38 if {![runto_main]} { 39 return 0 40 } 41 42 # If debugging with target remote, check whether the all-stop 43 # variant of the RSP is being used. If so, we can't run the 44 # all-stop tests. 45 if { [target_info exists gdb_protocol] 46 && ([target_info gdb_protocol] == "remote" 47 || [target_info gdb_protocol] == "extended-remote")} { 48 49 set test "maint show target-non-stop" 50 gdb_test_multiple "maint show target-non-stop" $test { 51 -re "(is|currently) on.*$gdb_prompt $" { 52 } 53 -re "(is|currently) off.*$gdb_prompt $" { 54 unsupported "can't issue info threads while target is running" 55 return 0 56 } 57 } 58 } 59 60 # We want to catch "[New inferior ...]" below, to avoid sleeping. 61 if {$detach_on_fork == "off" || $follow_fork == "child"} { 62 gdb_test_no_output "set print inferior-events on" 63 } 64 65 gdb_test_no_output "set detach-on-fork $detach_on_fork" 66 67 gdb_test_no_output "set follow-fork $follow_fork" 68 if {$non_stop == "off"} { 69 gdb_test_no_output "set schedule-multiple $schedule_multiple" 70 } 71 72 # If we're detaching from the parent (or child), then tell it to 73 # exit itself when its child (or parent) exits. If we stay 74 # attached, we take care of killing it. 75 if {$detach_on_fork == "on"} { 76 gdb_test "print exit_if_relative_exits = 1" " = 1" 77 } 78 79 set test "continue &" 80 gdb_test_multiple $test $test { 81 -re "$gdb_prompt " { 82 pass $test 83 } 84 } 85 86 if {$detach_on_fork == "off" || $follow_fork == "child"} { 87 set test "fork child appears" 88 gdb_test_multiple "" $test { 89 -re "\\\[New inferior " { 90 pass $test 91 } 92 } 93 } else { 94 # All we can do is wait a little bit for the parent to fork. 95 sleep 1 96 } 97 98 set not_nl "\[^\r\n\]*" 99 100 if {$detach_on_fork == "on" && $follow_fork == "child"} { 101 gdb_test "info threads" \ 102 " 2.1 ${not_nl}\\\(running\\\).*No selected thread.*" 103 } elseif {$detach_on_fork == "on"} { 104 gdb_test "info threads" \ 105 "\\\* 1 ${not_nl}\\\(running\\\)" 106 } elseif {$non_stop == "on" || $schedule_multiple == "on"} { 107 # Both parent and child should be marked running, and the 108 # parent should be selected. 109 gdb_test "info threads" \ 110 [multi_line \ 111 "\\\* 1.1 ${not_nl} \\\(running\\\)${not_nl}" \ 112 " 2.1 ${not_nl} \\\(running\\\)"] 113 } else { 114 set test "only $follow_fork marked running" 115 gdb_test_multiple "info threads" $test { 116 -re "\\\(running\\\)${not_nl}\\\(running\\\)\r\n$gdb_prompt $" { 117 fail $test 118 } 119 -re "\\\* 1.1 ${not_nl}\\\(running\\\)\r\n 2.1 ${not_nl}\r\n$gdb_prompt $" { 120 gdb_assert [string eq $follow_fork "parent"] $test 121 } 122 -re "\\\* 1.1 ${not_nl}\r\n 2.1 ${not_nl}\\\(running\\\)\r\n$gdb_prompt $" { 123 gdb_assert [string eq $follow_fork "child"] $test 124 } 125 } 126 } 127 128 # We don't want to see "Inferior exited" in reaction to the kills. 129 gdb_test_no_output "set print inferior-events off" 130 131 # Kill both parent and child. 132 if {$detach_on_fork == "off" || $follow_fork == "parent"} { 133 gdb_test_no_output "kill inferior 1" "kill parent" 134 } 135 if {$detach_on_fork == "off" || $follow_fork == "child"} { 136 gdb_test_no_output "kill inferior 2" "kill child" 137 } 138} 139 140# Exercise all permutations of: 141# 142# set detach-on-fork off|on 143# set follow-fork parent|child 144# set non-stop on|off 145# set schedule-multiple on|off 146 147foreach_with_prefix detach-on-fork {"off" "on"} { 148 foreach_with_prefix follow-fork {"parent" "child"} { 149 with_test_prefix "non-stop" { 150 do_test ${detach-on-fork} ${follow-fork} "on" "-" 151 } 152 with_test_prefix "all-stop" { 153 foreach_with_prefix schedule-multiple {"on" "off"} { 154 do_test ${detach-on-fork} ${follow-fork} "off" ${schedule-multiple} 155 } 156 } 157 } 158} 159