c3bd0b01b29063eadb24bebbd5b1ef20571d11e7
[deliverable/binutils-gdb.git] / gdb / testsuite / gdb.base / fork-running-state.exp
1 # Copyright (C) 2016-2020 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
20 standard_testfile
21
22 # The test proper.
23
24 proc 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
159 foreach_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 }
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