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ecd75fc8 | 1 | # Copyright 1997-2014 Free Software Foundation, Inc. |
74cf1395 JM |
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 |
74cf1395 | 6 | # (at your option) any later version. |
e22f8b7c | 7 | # |
74cf1395 JM |
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 | # |
74cf1395 | 13 | # You should have received a copy of the GNU General Public License |
e85a822c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
74cf1395 | 15 | |
e85a822c | 16 | if { [is_remote target] || ![isnative] } then { |
5a2468f5 JM |
17 | continue |
18 | } | |
19 | ||
2d4e0376 YQ |
20 | # Until "set follow-fork-mode" and "catch fork" are implemented on |
21 | # other targets... | |
22 | # | |
23 | if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then { | |
24 | continue | |
25 | } | |
74cf1395 | 26 | |
289f9037 TT |
27 | standard_testfile |
28 | ||
29 | if {[prepare_for_testing $testfile.exp $testfile $srcfile debug]} { | |
30 | untested $testfile.exp | |
31 | return -1 | |
74cf1395 JM |
32 | } |
33 | ||
e85a822c DJ |
34 | proc check_fork_catchpoints {} { |
35 | global gdb_prompt | |
36 | ||
37 | # Verify that the system supports "catch fork". | |
38 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "insert first fork catchpoint" | |
39 | set has_fork_catchpoints 0 | |
40 | gdb_test_multiple "continue" "continue to first fork catchpoint" { | |
77b06cd7 | 41 | -re ".*Your system does not support this type\r\nof catchpoint.*$gdb_prompt $" { |
e85a822c DJ |
42 | unsupported "continue to first fork catchpoint" |
43 | } | |
44 | -re ".*Catchpoint.*$gdb_prompt $" { | |
45 | set has_fork_catchpoints 1 | |
46 | pass "continue to first fork catchpoint" | |
47 | } | |
48 | } | |
49 | ||
50 | if {$has_fork_catchpoints == 0} { | |
51 | unsupported "fork catchpoints" | |
52 | return -code return | |
53 | } | |
54 | } | |
55 | ||
74cf1395 | 56 | proc default_fork_parent_follow {} { |
a76e022a MS |
57 | global gdb_prompt |
58 | ||
59 | gdb_test "show follow-fork" \ | |
60 | "Debugger response to a program call of fork or vfork is \"parent\".*" \ | |
61 | "default show parent follow, no catchpoints" | |
62 | ||
63 | gdb_test "next 2" \ | |
64 | "Detaching after fork from.*" \ | |
65 | "default parent follow, no catchpoints" | |
66 | ||
67 | # The child has been detached; allow time for any output it might | |
68 | # generate to arrive, so that output doesn't get confused with | |
69 | # any expected debugger output from a subsequent testpoint. | |
70 | # | |
71 | exec sleep 1 | |
74cf1395 JM |
72 | } |
73 | ||
74 | proc explicit_fork_parent_follow {} { | |
a76e022a MS |
75 | global gdb_prompt |
76 | ||
77 | gdb_test_no_output "set follow-fork parent" | |
78 | ||
79 | gdb_test "show follow-fork" \ | |
80 | "Debugger response to a program call of fork or vfork is \"parent\"." \ | |
81 | "explicit show parent follow, no catchpoints" | |
82 | ||
83 | gdb_test "next 2" "Detaching after fork from.*" \ | |
84 | "explicit parent follow, no catchpoints" | |
85 | ||
86 | # The child has been detached; allow time for any output it might | |
87 | # generate to arrive, so that output doesn't get confused with | |
88 | # any expected debugger output from a subsequent testpoint. | |
89 | # | |
90 | exec sleep 1 | |
74cf1395 JM |
91 | } |
92 | ||
93 | proc explicit_fork_child_follow {} { | |
a76e022a MS |
94 | global gdb_prompt |
95 | ||
96 | gdb_test_no_output "set follow-fork child" | |
97 | ||
98 | gdb_test "show follow-fork" \ | |
99 | "Debugger response to a program call of fork or vfork is \"child\"." \ | |
100 | "explicit show child follow, no catchpoints" | |
101 | ||
102 | gdb_test "next 2" "Attaching after.* fork to.*" \ | |
103 | "explicit child follow, no catchpoints" | |
104 | ||
105 | # The child has been detached; allow time for any output it might | |
106 | # generate to arrive, so that output doesn't get confused with | |
107 | # any gdb_expected debugger output from a subsequent testpoint. | |
108 | # | |
109 | exec sleep 1 | |
74cf1395 JM |
110 | } |
111 | ||
112 | proc catch_fork_child_follow {} { | |
a76e022a MS |
113 | global gdb_prompt |
114 | global srcfile | |
115 | ||
116 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] | |
117 | ||
2c04da0d | 118 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" \ |
a76e022a MS |
119 | "explicit child follow, set catch fork" |
120 | ||
121 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
122 | # and further that the catchpoint mentions no process id. | |
123 | # | |
124 | set test_name "info shows catchpoint without pid" | |
125 | gdb_test_multiple "info breakpoints" "$test_name" { | |
126 | -re ".*catchpoint.*keep y.*fork\[\r\n\]+$gdb_prompt $" { | |
127 | pass "$test_name" | |
128 | } | |
129 | } | |
130 | ||
131 | gdb_test "continue" \ | |
2c04da0d | 132 | "Catchpoint \[0-9\]* \\(forked process \[0-9\]*\\),.*" \ |
a76e022a MS |
133 | "explicit child follow, catch fork" |
134 | ||
135 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
136 | # and further that the catchpoint managed to capture a process id. | |
137 | # | |
138 | set test_name "info shows catchpoint without pid" | |
139 | gdb_test_multiple "info breakpoints" "$test_name" { | |
140 | -re ".*catchpoint.*keep y.*fork, process.*$gdb_prompt $" { | |
141 | pass "$test_name" | |
142 | } | |
143 | } | |
144 | ||
145 | gdb_test_no_output "set follow-fork child" | |
146 | ||
147 | gdb_test "tbreak ${srcfile}:$bp_after_fork" \ | |
148 | "Temporary breakpoint.*, line $bp_after_fork.*" \ | |
149 | "set follow-fork child, tbreak" | |
150 | ||
151 | gdb_test "continue" \ | |
152 | "Attaching after.* fork to.* at .*$bp_after_fork.*" \ | |
153 | "set follow-fork child, hit tbreak" | |
154 | ||
155 | # The parent has been detached; allow time for any output it might | |
156 | # generate to arrive, so that output doesn't get confused with | |
157 | # any expected debugger output from a subsequent testpoint. | |
158 | # | |
159 | exec sleep 1 | |
160 | ||
161 | gdb_test "delete breakpoints" \ | |
162 | "" \ | |
163 | "set follow-fork child, cleanup" \ | |
e9101ff5 | 164 | "Delete all breakpoints. \\(y or n\\) $" \ |
a76e022a | 165 | "y" |
74cf1395 JM |
166 | } |
167 | ||
b242c3c2 | 168 | proc catch_fork_unpatch_child {} { |
a76e022a MS |
169 | global gdb_prompt |
170 | global srcfile | |
171 | ||
172 | set bp_exit [gdb_get_line_number "at exit"] | |
173 | ||
174 | gdb_test "break callee" "file .*$srcfile, line .*" \ | |
175 | "unpatch child, break at callee" | |
176 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" \ | |
177 | "unpatch child, set catch fork" | |
178 | ||
179 | gdb_test "continue" \ | |
2c04da0d | 180 | "Catchpoint \[0-9\]* \\(forked process \[0-9\]*\\),.*" \ |
a76e022a MS |
181 | "unpatch child, catch fork" |
182 | ||
183 | # Delete all breakpoints and catchpoints. | |
184 | delete_breakpoints | |
185 | ||
186 | # Force $srcfile as the current GDB source can be in glibc sourcetree. | |
187 | gdb_test "break $srcfile:$bp_exit" \ | |
188 | "Breakpoint .*file .*$srcfile, line .*" \ | |
189 | "unpatch child, breakpoint at exit call" | |
190 | ||
27d3a1a2 MS |
191 | gdb_test_no_output "set follow-fork child" \ |
192 | "unpatch child, set follow-fork child" | |
a76e022a MS |
193 | |
194 | set test "unpatch child, unpatched parent breakpoints from child" | |
195 | gdb_test_multiple "continue" $test { | |
196 | -re "at exit.*$gdb_prompt $" { | |
197 | pass "$test" | |
198 | } | |
199 | -re "SIGTRAP.*$gdb_prompt $" { | |
200 | fail "$test" | |
201 | ||
202 | # Explicitly kill this child, so we can continue gracefully | |
203 | # with further testing... | |
204 | send_gdb "kill\n" | |
205 | gdb_expect { | |
206 | -re ".*Kill the program being debugged.*y or n. $" { | |
207 | send_gdb "y\n" | |
208 | gdb_expect -re "$gdb_prompt $" {} | |
209 | } | |
210 | } | |
211 | } | |
212 | } | |
b242c3c2 PA |
213 | } |
214 | ||
74cf1395 | 215 | proc tcatch_fork_parent_follow {} { |
a76e022a MS |
216 | global gdb_prompt |
217 | global srcfile | |
218 | ||
219 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] | |
220 | ||
2c04da0d | 221 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" \ |
a76e022a MS |
222 | "explicit parent follow, set tcatch fork" |
223 | ||
74cf1395 JM |
224 | # ??rehrauer: I don't yet know how to get the id of the tcatch |
225 | # via this script, so that I can add a -do list to it. For now, | |
226 | # do the follow stuff after the catch happens. | |
227 | ||
2c04da0d UW |
228 | gdb_test "continue" \ |
229 | "Catchpoint \[0-9\]* \\(forked process \[0-9\]*\\),.*" \ | |
a76e022a MS |
230 | "explicit parent follow, tcatch fork" |
231 | ||
232 | gdb_test_no_output "set follow-fork parent" | |
233 | ||
234 | gdb_test "tbreak ${srcfile}:$bp_after_fork" \ | |
235 | "Temporary breakpoint.*, line $bp_after_fork.*" \ | |
236 | "set follow-fork parent, tbreak" | |
237 | ||
238 | gdb_test "continue" \ | |
239 | "Detaching after fork from.* at .*$bp_after_fork.*" \ | |
240 | "set follow-fork parent, hit tbreak" | |
241 | ||
242 | # The child has been detached; allow time for any output it might | |
243 | # generate to arrive, so that output doesn't get confused with | |
244 | # any expected debugger output from a subsequent testpoint. | |
245 | # | |
246 | exec sleep 1 | |
247 | ||
248 | gdb_test "delete breakpoints" \ | |
249 | "" \ | |
250 | "set follow-fork parent, cleanup" \ | |
e9101ff5 | 251 | "Delete all breakpoints. \\(y or n\\) $" \ |
a76e022a | 252 | "y" |
74cf1395 JM |
253 | } |
254 | ||
255 | proc do_fork_tests {} { | |
a76e022a | 256 | global gdb_prompt |
74cf1395 | 257 | |
a76e022a MS |
258 | # Verify that help is available for "set follow-fork-mode". |
259 | # | |
260 | gdb_test "help set follow-fork-mode" \ | |
261 | "Set debugger response to a program call of fork or vfork..* | |
74cf1395 JM |
262 | A fork or vfork creates a new process. follow-fork-mode can be:.* |
263 | .*parent - the original process is debugged after a fork.* | |
264 | .*child - the new process is debugged after a fork.* | |
ef04f396 | 265 | The unfollowed process will continue to run..* |
a76e022a MS |
266 | By default, the debugger will follow the parent process..*" \ |
267 | "help set follow-fork" | |
268 | ||
269 | # Verify that we can set follow-fork-mode, using an abbreviation | |
270 | # for both the flag and its value. | |
271 | # | |
272 | gdb_test_no_output "set follow-fork ch" | |
273 | ||
274 | gdb_test "show follow-fork" \ | |
275 | "Debugger response to a program call of fork or vfork is \"child\".*" \ | |
276 | "set follow-fork, using abbreviations" | |
277 | ||
278 | # Verify that we cannot set follow-fork-mode to nonsense. | |
279 | # | |
280 | gdb_test "set follow-fork chork" "Undefined item: \"chork\".*" \ | |
281 | "set follow-fork to nonsense is prohibited" | |
282 | ||
283 | gdb_test_no_output "set follow-fork parent" "reset parent" | |
284 | ||
285 | # Check that fork catchpoints are supported, as an indicator for whether | |
286 | # fork-following is supported. | |
287 | if [runto_main] then { check_fork_catchpoints } | |
288 | ||
289 | # Test the default behaviour, which is to follow the parent of a | |
290 | # fork, and detach from the child. Do this without catchpoints. | |
291 | # | |
292 | if [runto_main] then { default_fork_parent_follow } | |
293 | ||
294 | # Test the ability to explicitly follow the parent of a fork, and | |
295 | # detach from the child. Do this without catchpoints. | |
296 | # | |
297 | if [runto_main] then { explicit_fork_parent_follow } | |
298 | ||
299 | # Test the ability to follow the child of a fork, and detach from | |
300 | # the parent. Do this without catchpoints. | |
301 | # | |
302 | if [runto_main] then { explicit_fork_child_follow } | |
303 | ||
304 | # Test the ability to follow both child and parent of a fork. Do | |
305 | # this without catchpoints. | |
306 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
307 | # | |
308 | ||
309 | # Test the ability to have the debugger ask the user at fork-time | |
310 | # whether to follow the parent, child or both. Do this without | |
311 | # catchpoints. | |
312 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
313 | # | |
314 | ||
315 | # Test the ability to catch a fork, specify that the child be | |
316 | # followed, and continue. Make the catchpoint permanent. | |
317 | # | |
318 | if [runto_main] then { catch_fork_child_follow } | |
319 | ||
320 | # Test that parent breakpoints are successfully detached from the | |
321 | # child at fork time, even if the user removes them from the | |
322 | # breakpoints list after stopping at a fork catchpoint. | |
323 | if [runto_main] then { catch_fork_unpatch_child } | |
324 | ||
325 | # Test the ability to catch a fork, specify via a -do clause that | |
326 | # the parent be followed, and continue. Make the catchpoint temporary. | |
327 | # | |
328 | if [runto_main] then { tcatch_fork_parent_follow } | |
74cf1395 JM |
329 | } |
330 | ||
e85a822c DJ |
331 | # The "Detaching..." and "Attaching..." messages may be hidden by |
332 | # default. | |
27d3a1a2 | 333 | gdb_test_no_output "set verbose" |
74cf1395 JM |
334 | |
335 | # This is a test of gdb's ability to follow the parent, child or both | |
336 | # parent and child of a Unix fork() system call. | |
337 | # | |
338 | do_fork_tests | |
339 | ||
340 | return 0 |