1# Copyright (C) 2016-2019 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] then { 39 fail "can't run to main" 40 return 0 41 } 42 43 # If debugging with target remote, check whether the all-stop 44 # variant of the RSP is being used. If so, we can't run the 45 # all-stop tests. 46 if { [target_info exists gdb_protocol] 47 && ([target_info gdb_protocol] == "remote" 48 || [target_info gdb_protocol] == "extended-remote")} { 49 50 set test "maint show target-non-stop" 51 gdb_test_multiple "maint show target-non-stop" $test { 52 -re "(is|currently) on.*$gdb_prompt $" { 53 } 54 -re "(is|currently) off.*$gdb_prompt $" { 55 unsupported "can't issue info threads while target is running" 56 return 0 57 } 58 } 59 } 60 61 # We want to catch "[New inferior ...]" below, to avoid sleeping. 62 if {$detach_on_fork == "off" || $follow_fork == "child"} { 63 gdb_test_no_output "set print inferior-events on" 64 } 65 66 gdb_test_no_output "set detach-on-fork $detach_on_fork" 67 68 gdb_test_no_output "set follow-fork $follow_fork" 69 if {$non_stop == "off"} { 70 gdb_test_no_output "set schedule-multiple $schedule_multiple" 71 } 72 73 # If we're detaching from the parent (or child), then tell it to 74 # exit itself when its child (or parent) exits. If we stay 75 # attached, we take care of killing it. 76 if {$detach_on_fork == "on"} { 77 gdb_test "print exit_if_relative_exits = 1" " = 1" 78 } 79 80 set test "continue &" 81 gdb_test_multiple $test $test { 82 -re "$gdb_prompt " { 83 pass $test 84 } 85 } 86 87 if {$detach_on_fork == "off" || $follow_fork == "child"} { 88 set test "fork child appears" 89 gdb_test_multiple "" $test { 90 -re "\\\[New inferior " { 91 pass $test 92 } 93 } 94 } else { 95 # All we can do is wait a little bit for the parent to fork. 96 sleep 1 97 } 98 99 set not_nl "\[^\r\n\]*" 100 101 if {$detach_on_fork == "on" && $non_stop == "on" && $follow_fork == "child"} { 102 gdb_test "info threads" \ 103 " 2.1 ${not_nl}\\\(running\\\).*No selected thread.*" 104 } elseif {$detach_on_fork == "on" && $follow_fork == "child"} { 105 gdb_test "info threads" \ 106 "\\\* 2.1 ${not_nl}\\\(running\\\)" 107 } elseif {$detach_on_fork == "on"} { 108 gdb_test "info threads" \ 109 "\\\* 1 ${not_nl}\\\(running\\\)" 110 } elseif {$non_stop == "on" 111 || ($schedule_multiple == "on" && $follow_fork == "parent")} { 112 # Both parent and child should be marked running, and the 113 # parent should be selected. 114 gdb_test "info threads" \ 115 [multi_line \ 116 "\\\* 1.1 ${not_nl} \\\(running\\\)${not_nl}" \ 117 " 2.1 ${not_nl} \\\(running\\\)"] 118 } elseif {$schedule_multiple == "on" && $follow_fork == "child"} { 119 # Both parent and child should be marked running, and the 120 # child should be selected. 121 gdb_test "info threads" \ 122 [multi_line \ 123 " 1.1 ${not_nl} \\\(running\\\)${not_nl}" \ 124 "\\\* 2.1 ${not_nl} \\\(running\\\)"] 125 } else { 126 set test "only $follow_fork marked running" 127 gdb_test_multiple "info threads" $test { 128 -re "\\\(running\\\)${not_nl}\\\(running\\\)\r\n$gdb_prompt $" { 129 fail $test 130 } 131 -re "\\\* 1.1 ${not_nl}\\\(running\\\)\r\n 2.1 ${not_nl}\r\n$gdb_prompt $" { 132 gdb_assert [string eq $follow_fork "parent"] $test 133 } 134 -re "1.1 ${not_nl}\r\n\\\* 2.1 ${not_nl}\\\(running\\\)\r\n$gdb_prompt $" { 135 gdb_assert [string eq $follow_fork "child"] $test 136 } 137 } 138 } 139 140 # We don't want to see "Inferior exited" in reaction to the kills. 141 gdb_test_no_output "set print inferior-events off" 142 143 # Kill both parent and child. 144 if {$detach_on_fork == "off" || $follow_fork == "parent"} { 145 gdb_test_no_output "kill inferior 1" "kill parent" 146 } 147 if {$detach_on_fork == "off" || $follow_fork == "child"} { 148 gdb_test_no_output "kill inferior 2" "kill child" 149 } 150} 151 152# Exercise all permutations of: 153# 154# set detach-on-fork off|on 155# set follow-fork parent|child 156# set non-stop on|off 157# set schedule-multiple on|off 158 159foreach_with_prefix detach-on-fork {"off" "on"} { 160 foreach_with_prefix follow-fork {"parent" "child"} { 161 with_test_prefix "non-stop" { 162 do_test ${detach-on-fork} ${follow-fork} "on" "-" 163 } 164 with_test_prefix "all-stop" { 165 foreach_with_prefix schedule-multiple {"on" "off"} { 166 do_test ${detach-on-fork} ${follow-fork} "off" ${schedule-multiple} 167 } 168 } 169 } 170} 171