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9b254dd1 | 1 | # Copyright 2005, 2006, 2007, 2008 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 MS |
15 | |
16 | if $tracelevel then { | |
17 | strace $tracelevel | |
18 | } | |
19 | ||
db9d7fc5 | 20 | if { [is_remote target] || ![isnative] } then { |
099ac3dd MS |
21 | continue |
22 | } | |
23 | ||
24 | # Until "set follow-fork-mode" and "catch fork" are implemented on | |
25 | # other targets... | |
26 | # | |
27 | if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-*-linux*"]} then { | |
28 | continue | |
29 | } | |
30 | ||
31 | set prms_id 0 | |
32 | set bug_id 0 | |
33 | ||
34 | set testfile "multi-forks" | |
35 | set srcfile ${testfile}.c | |
36 | set binfile ${objdir}/${subdir}/${testfile} | |
37 | ||
38 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
b60f0898 JB |
39 | untested multi-forks.exp |
40 | return -1 | |
099ac3dd MS |
41 | } |
42 | ||
43 | # Start with a fresh gdb | |
44 | ||
45 | gdb_exit | |
46 | gdb_start | |
47 | gdb_reinitialize_dir $srcdir/$subdir | |
48 | gdb_load ${binfile} | |
49 | ||
50 | global gdb_prompt | |
51 | ||
52 | # This is a test of gdb's ability to follow the parent, child or both | |
53 | # parent and child of multiple Unix fork() system calls. | |
54 | # | |
55 | ||
aad9a193 JB |
56 | # The inferior program builds a tree of processes by executing a loop |
57 | # four times, calling fork at each iteration. Thus, at each | |
58 | # iteration, the total number of processes doubles; after four | |
59 | # iterations, we have 16 processes. Each process saves the results | |
60 | # from its 'fork' calls, so we can tell which leaf a given process is | |
61 | # by looking at which forks returned zero and which returned a pid: a | |
62 | # zero means to take the child's branch; a pid means to take the | |
63 | # parent's branch. | |
099ac3dd MS |
64 | |
65 | # First set gdb to follow the child. | |
66 | # The result should be that each of the 4 forks returns zero. | |
67 | ||
68 | runto_main | |
69 | set exit_bp_loc [gdb_get_line_number "Set exit breakpoint here."] | |
70 | gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" "Break at exit" | |
71 | gdb_test "set follow child" "" "" | |
72 | ||
73 | send_gdb "continue\n" | |
74 | gdb_expect { | |
b8db102d | 75 | -re ".*Break.* main .*$gdb_prompt.*$" {} |
099ac3dd MS |
76 | -re ".*$gdb_prompt $" {fail "run to exit 1"} |
77 | default {fail "run to exit 1 (timeout)"} | |
78 | } | |
79 | ||
80 | gdb_test "print pids" "\\$.* = \\{0, 0, 0, 0\\}.*" "follow child, print pids" | |
81 | ||
82 | # Now set gdb to follow the parent. | |
83 | # Result should be that none of the 4 forks returns zero. | |
84 | ||
85 | delete_breakpoints | |
86 | runto_main | |
87 | gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" "Break at exit" | |
88 | gdb_test "set follow parent" "" "" | |
89 | ||
90 | send_gdb "continue\n" | |
ef682c56 JB |
91 | |
92 | # The output from the child processes can be interleaved arbitrarily | |
93 | # with the output from GDB and the parent process. If we don't | |
94 | # consume it all now, it can confuse later interactions. | |
95 | set seen_done 0 | |
96 | set seen_break 0 | |
97 | set seen_prompt 0 | |
98 | set seen_timeout 0 | |
99 | while { ($seen_done < 16 || ! $seen_prompt) && ! $seen_timeout } { | |
100 | # We don't know what order the interesting things will arrive in. | |
101 | # Using a pattern of the form 'x|y|z' instead of -re x ... -re y | |
102 | # ... -re z ensures that expect always chooses the match that | |
103 | # occurs leftmost in the input, and not the pattern appearing | |
104 | # first in the script that occurs anywhere in the input, so that | |
105 | # we don't skip anything. | |
106 | gdb_expect { | |
107 | -re "($decimal done)|(Breakpoint)|($gdb_prompt)" { | |
108 | if {[info exists expect_out(1,string)]} { | |
109 | incr seen_done | |
110 | } elseif {[info exists expect_out(2,string)]} { | |
111 | set seen_break 1 | |
112 | } elseif {[info exists expect_out(3,string)]} { | |
113 | set seen_prompt 1 | |
114 | } | |
115 | array unset expect_out | |
116 | } | |
117 | timeout { set seen_timeout 1 } | |
118 | } | |
119 | } | |
120 | ||
121 | if { $seen_timeout } { | |
122 | fail "run to exit 2 (timeout)" | |
123 | } elseif { ! $seen_prompt } { | |
124 | fail "run to exit 2 (no prompt)" | |
125 | } elseif { ! $seen_break } { | |
126 | fail "run to exit 2 (no breakpoint hit)" | |
127 | } elseif { $seen_done != 16 } { | |
128 | fail "run to exit 2 (missing done messages)" | |
129 | } else { | |
130 | pass "run to exit 2" | |
099ac3dd MS |
131 | } |
132 | ||
133 | gdb_test "print pids\[0\]==0 || pids\[1\]==0 || pids\[2\]==0 || pids\[3\]==0" \ | |
134 | " = 0" "follow parent, print pids" | |
135 | ||
136 | # | |
137 | # Now test with detach-on-fork off. | |
138 | # | |
139 | ||
140 | runto_main | |
141 | gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" "" | |
142 | ||
143 | gdb_test "help set detach-on-fork" "whether gdb will detach the child.*" \ | |
144 | "help set detach" | |
145 | ||
146 | gdb_test "show detach-on-fork" "on." "show detach default on" | |
147 | ||
148 | gdb_test "set detach off" "" "set detach off" | |
149 | ||
150 | # | |
151 | # We will now run every fork up to the exit bp, | |
152 | # eventually winding up with 16 forks. | |
153 | # | |
154 | ||
9078e690 DJ |
155 | for {set i 1} {$i <= 15} {incr i} { |
156 | gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit $i" | |
157 | gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork $i" | |
37f08e04 | 158 | gdb_test "restart $i" "(_dl_sysinfo_int80|fork|__kernel_(v|)syscall).*" \ |
9cb82863 | 159 | "restart $i" |
9078e690 | 160 | } |
099ac3dd MS |
161 | |
162 | gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 16" | |
163 | gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 16" | |
164 | gdb_test "restart 0" " main .*" "restart final" | |
165 | ||
166 | # | |
167 | # Now we should examine all the pids. | |
168 | # | |
169 | ||
170 | # | |
f73adfeb | 171 | # Test detach fork |
099ac3dd MS |
172 | # |
173 | ||
174 | # [assumes we're at #0] | |
f73adfeb AS |
175 | gdb_test "detach fork 1" "Detached .*" "Detach 1" |
176 | gdb_test "detach fork 2" "Detached .*" "Detach 2" | |
177 | gdb_test "detach fork 3" "Detached .*" "Detach 3" | |
178 | gdb_test "detach fork 4" "Detached .*" "Detach 4" | |
099ac3dd MS |
179 | |
180 | # | |
b8db102d | 181 | # Test delete fork |
099ac3dd MS |
182 | # |
183 | ||
b8db102d MS |
184 | gdb_test "delete fork 5" "" "Delete 5" |
185 | gdb_test "info fork 5" "No fork number 5." "Did delete 5" | |
186 | gdb_test "delete fork 6" "" "Delete 6" | |
187 | gdb_test "info fork 6" "No fork number 6." "Did delete 6" | |
188 | gdb_test "delete fork 7" "" "Delete 7" | |
189 | gdb_test "info fork 7" "No fork number 7." "Did delete 7" | |
190 | gdb_test "delete fork 8" "" "Delete 8" | |
191 | gdb_test "info fork 8" "No fork number 8." "Did delete 8" | |
192 | gdb_test "delete fork 9" "" "Delete 9" | |
193 | gdb_test "info fork 9" "No fork number 9." "Did delete 9" | |
194 | gdb_test "delete fork 10" "" "Delete 10" | |
195 | gdb_test "info fork 10" "No fork number 10." "Did delete 10" | |
196 | gdb_test "delete fork 11" "" "Delete 11" | |
197 | gdb_test "info fork 11" "No fork number 11." "Did delete 11" | |
198 | gdb_test "delete fork 12" "" "Delete 12" | |
199 | gdb_test "info fork 12" "No fork number 12." "Did delete 12" | |
200 | gdb_test "delete fork 13" "" "Delete 13" | |
201 | gdb_test "info fork 13" "No fork number 13." "Did delete 13" | |
202 | gdb_test "delete fork 14" "" "Delete 14" | |
203 | gdb_test "info fork 14" "No fork number 14." "Did delete 14" | |
204 | gdb_test "delete fork 15" "" "Delete 15" | |
205 | gdb_test "info fork 15" "No fork number 15." "Did delete 15" | |
099ac3dd MS |
206 | |
207 | return 0 | |
208 |