Commit | Line | Data |
---|---|---|
88b9d363 | 1 | # Copyright 2005-2022 Free Software Foundation, Inc. |
099ac3dd MS |
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 | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
099ac3dd | 6 | # (at your option) any later version. |
e22f8b7c | 7 | # |
099ac3dd MS |
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. | |
e22f8b7c | 12 | # |
099ac3dd | 13 | # You should have received a copy of the GNU General Public License |
e22f8b7c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
099ac3dd | 15 | |
099ac3dd MS |
16 | # Until "set follow-fork-mode" and "catch fork" are implemented on |
17 | # other targets... | |
18 | # | |
3ca22649 | 19 | if { ![istarget "*-*-linux*"] } then { |
099ac3dd MS |
20 | continue |
21 | } | |
22 | ||
099ac3dd | 23 | |
f8b41b00 | 24 | standard_testfile .c |
099ac3dd MS |
25 | |
26 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
5b362f04 | 27 | untested "failed to compile" |
b60f0898 | 28 | return -1 |
099ac3dd MS |
29 | } |
30 | ||
31 | # Start with a fresh gdb | |
32 | ||
f8b41b00 | 33 | clean_restart ${binfile} |
099ac3dd MS |
34 | |
35 | global gdb_prompt | |
36 | ||
37 | # This is a test of gdb's ability to follow the parent, child or both | |
38 | # parent and child of multiple Unix fork() system calls. | |
cb4dce93 JK |
39 | |
40 | set exit_bp_loc [gdb_get_line_number "Set exit breakpoint here."] | |
41 | ||
42 | # Insert a breakpoint at the location provided by the exit_bp_loc global | |
43 | # and resume the execution until hitting that breakpoint. We also make | |
44 | # sure to consume all the expected output from all processes as well, | |
45 | # to make sure it doesn't cause trouble during a subsequent test. | |
46 | ||
47 | proc continue_to_exit_bp_loc {} { | |
48 | global exit_bp_loc decimal gdb_prompt | |
1eef6428 | 49 | global inferior_spawn_id gdb_spawn_id |
cb4dce93 JK |
50 | |
51 | gdb_breakpoint $exit_bp_loc | |
52 | ||
53 | send_gdb "continue\n" | |
54 | ||
55 | # The output from the child processes can be interleaved arbitrarily | |
56 | # with the output from GDB and the parent process. If we don't | |
57 | # consume it all now, it can confuse later interactions. | |
58 | set seen_done 0 | |
59 | set seen_break 0 | |
60 | set seen_prompt 0 | |
61 | set seen_timeout 0 | |
62 | while { ($seen_done < 16 || ! $seen_prompt) && ! $seen_timeout } { | |
63 | # We don't know what order the interesting things will arrive in. | |
64 | # Using a pattern of the form 'x|y|z' instead of -re x ... -re y | |
65 | # ... -re z ensures that expect always chooses the match that | |
66 | # occurs leftmost in the input, and not the pattern appearing | |
67 | # first in the script that occurs anywhere in the input, so that | |
68 | # we don't skip anything. | |
69 | gdb_expect { | |
1eef6428 | 70 | -i "$inferior_spawn_id $gdb_spawn_id" |
cb4dce93 JK |
71 | -re "($decimal done)|(Breakpoint)|($gdb_prompt)" { |
72 | if {[info exists expect_out(1,string)]} { | |
73 | incr seen_done | |
74 | } elseif {[info exists expect_out(2,string)]} { | |
75 | set seen_break 1 | |
76 | } elseif {[info exists expect_out(3,string)]} { | |
77 | set seen_prompt 1 | |
78 | } | |
79 | array unset expect_out | |
80 | } | |
81 | timeout { set seen_timeout 1 } | |
82 | } | |
83 | } | |
84 | ||
85 | if { $seen_timeout } { | |
86 | fail "run to exit 2 (timeout)" | |
87 | } elseif { ! $seen_prompt } { | |
88 | fail "run to exit 2 (no prompt)" | |
89 | } elseif { ! $seen_break } { | |
90 | fail "run to exit 2 (no breakpoint hit)" | |
91 | } elseif { $seen_done != 16 } { | |
92 | fail "run to exit 2 (missing done messages)" | |
93 | } else { | |
94 | pass "run to exit 2" | |
95 | } | |
96 | } | |
099ac3dd | 97 | |
aad9a193 JB |
98 | # The inferior program builds a tree of processes by executing a loop |
99 | # four times, calling fork at each iteration. Thus, at each | |
100 | # iteration, the total number of processes doubles; after four | |
101 | # iterations, we have 16 processes. Each process saves the results | |
102 | # from its 'fork' calls, so we can tell which leaf a given process is | |
103 | # by looking at which forks returned zero and which returned a pid: a | |
104 | # zero means to take the child's branch; a pid means to take the | |
105 | # parent's branch. | |
099ac3dd | 106 | |
297e9a75 TV |
107 | foreach mode { "child" "parent" } { |
108 | clean_restart ${binfile} | |
109 | runto_main | |
110 | ||
111 | gdb_test_no_output "set follow-fork $mode" | |
112 | with_test_prefix "follow $mode" { | |
113 | continue_to_exit_bp_loc | |
114 | ||
115 | set test "print pids" | |
116 | if { $mode eq "child" } { | |
117 | # Gdb is set to follow the child. | |
118 | # The result should be that each of the 4 forks returns zero. | |
119 | gdb_test "print pids" "\\$.* = \\{0, 0, 0, 0\\}.*" $test | |
120 | } else { | |
121 | # Gdb is set to follow the parent. | |
122 | # Result should be that none of the 4 forks returns zero. | |
123 | set val \ | |
124 | [join [list \ | |
125 | "pids\[0\]==0" \ | |
126 | "pids\[1\]==0" \ | |
127 | "pids\[2\]==0" \ | |
128 | "pids\[3\]==0"] " || "] | |
129 | gdb_test "print $val" " = 0" $test | |
130 | } | |
131 | } | |
132 | } | |
099ac3dd MS |
133 | |
134 | # | |
135 | # Now test with detach-on-fork off. | |
136 | # | |
137 | ||
2277426b PA |
138 | # Start with a fresh gdb |
139 | ||
f8b41b00 | 140 | clean_restart ${binfile} |
2277426b | 141 | |
099ac3dd | 142 | runto_main |
cb4dce93 | 143 | gdb_breakpoint $exit_bp_loc |
099ac3dd MS |
144 | |
145 | gdb_test "help set detach-on-fork" "whether gdb will detach the child.*" \ | |
146 | "help set detach" | |
147 | ||
148 | gdb_test "show detach-on-fork" "on." "show detach default on" | |
149 | ||
27d3a1a2 | 150 | gdb_test_no_output "set detach off" "set detach off" |
099ac3dd MS |
151 | |
152 | # | |
153 | # We will now run every fork up to the exit bp, | |
2277426b | 154 | # eventually winding up with 16 inferiors. |
099ac3dd MS |
155 | # |
156 | ||
9078e690 | 157 | for {set i 1} {$i <= 15} {incr i} { |
b448cca5 TV |
158 | gdb_test_multiple "continue" "run to exit $i" { |
159 | -re "Continuing\.\r\n" { | |
160 | exp_continue | |
161 | } | |
162 | -re "\[New inferior $decimal \\(process $decimal\\)\]\r\n" { | |
163 | exp_continue | |
164 | } | |
165 | -re -wrap "Breakpoint .* main .*exit.*" { | |
166 | pass $gdb_test_name | |
167 | } | |
168 | } | |
b05b1202 | 169 | gdb_test "info inferior" " 2 .* 3 .* 4 .* 5 .*" "info inferior $i" |
2277426b PA |
170 | gdb_test "inferior $i + 1" "(_dl_sysinfo_int80|fork|__kernel_(v|)syscall).*" \ |
171 | "inferior $i" | |
9078e690 | 172 | } |
099ac3dd | 173 | |
cdc7edd7 | 174 | gdb_test "continue" "Breakpoint .* main .*exit.*" "run to exit 16" |
b05b1202 | 175 | gdb_test "info inferior" " 2 .* 3 .* 4 .* 5 .*" "info inferior 16" |
2277426b | 176 | gdb_test "inferior 2" " main .*" "restart final" |
099ac3dd MS |
177 | |
178 | # | |
179 | # Now we should examine all the pids. | |
180 | # | |
181 | ||
182 | # | |
2277426b | 183 | # Test detach inferior |
099ac3dd MS |
184 | # |
185 | ||
2277426b | 186 | # [assumes we're at #1] |
cdc7edd7 LM |
187 | gdb_test "detach inferior 2" "Detaching .*" "detach 2" |
188 | gdb_test "detach inferior 3" "Detaching .*" "detach 3" | |
189 | gdb_test "detach inferior 4" "Detaching .*" "detach 4" | |
190 | gdb_test "detach inferior 5" "Detaching .*" "detach 5" | |
099ac3dd MS |
191 | |
192 | # | |
2277426b PA |
193 | # Test kill inferior |
194 | # | |
099ac3dd | 195 | |
b05b1202 | 196 | for {set i 6} { $i <= 16} {incr i} { |
9f058c10 | 197 | gdb_test_no_output "kill inferior $i" "kill $i" |
cdc7edd7 | 198 | gdb_test "info inferior $i" "<null>.*" "did kill $i" |
b05b1202 | 199 | } |
099ac3dd MS |
200 | |
201 | return 0 |