1 # Copyright 1997, 1999, 2007, 2008 Free Software Foundation, Inc.
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.
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.
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/>.
16 if { [is_remote target] || ![isnative] } then {
24 set testfile "foll-fork"
25 set srcfile ${testfile}.c
26 set binfile ${objdir}/${subdir}/${testfile}
28 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
29 untested foll-fork.exp
35 # Until "set follow-fork-mode" and "catch fork" are implemented on
38 if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then {
42 proc check_fork_catchpoints {} {
45 # Verify that the system supports "catch fork".
46 gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "insert first fork catchpoint"
47 set has_fork_catchpoints 0
48 gdb_test_multiple "continue" "continue to first fork catchpoint" {
49 -re ".*Your system does not support fork catchpoints.*$gdb_prompt $" {
50 unsupported "continue to first fork catchpoint"
52 -re ".*Catchpoint.*$gdb_prompt $" {
53 set has_fork_catchpoints 1
54 pass "continue to first fork catchpoint"
58 if {$has_fork_catchpoints == 0} {
59 unsupported "fork catchpoints"
64 proc default_fork_parent_follow {} {
67 send_gdb "show follow\n"
69 -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
70 {pass "default show parent follow, no catchpoints"}
71 -re "$gdb_prompt $" {fail "default show parent follow, no catchpoints"}
72 timeout {fail "(timeout) default show parent follow, no catchpoints"}
76 -re "Detaching after fork from.*$gdb_prompt $"\
77 {pass "default parent follow, no catchpoints"}
78 -re "$gdb_prompt $" {fail "default parent follow, no catchpoints"}
79 timeout {fail "(timeout) default parent follow, no catchpoints" }
81 # The child has been detached; allow time for any output it might
82 # generate to arrive, so that output doesn't get confused with
83 # any expected debugger output from a subsequent testpoint.
88 proc explicit_fork_parent_follow {} {
91 send_gdb "set follow parent\n"
93 -re "$gdb_prompt $" {pass "set follow parent"}
94 timeout {fail "(timeout) set follow parent"}
96 send_gdb "show follow\n"
98 -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
99 {pass "explicit show parent follow, no catchpoints"}
100 -re "$gdb_prompt $" {fail "explicit show parent follow, no catchpoints"}
101 timeout {fail "(timeout) explicit show parent follow, no catchpoints"}
105 -re "Detaching after fork from.*$gdb_prompt $"\
106 {pass "explicit parent follow, no catchpoints"}
107 -re "$gdb_prompt $" {fail "explicit parent follow, no catchpoints"}
108 timeout {fail "(timeout) explicit parent follow, no catchpoints"}
110 # The child has been detached; allow time for any output it might
111 # generate to arrive, so that output doesn't get confused with
112 # any expected debugger output from a subsequent testpoint.
117 proc explicit_fork_child_follow {} {
120 send_gdb "set follow child\n"
122 -re "$gdb_prompt $" {pass "set follow child"}
123 timeout {fail "(timeout) set follow child"}
125 send_gdb "show follow\n"
127 -re "Debugger response to a program call of fork or vfork is \"child\"..*$gdb_prompt $"\
128 {pass "explicit show child follow, no catchpoints"}
129 -re "$gdb_prompt $" {fail "explicit show child follow, no catchpoints"}
130 timeout {fail "(timeout) explicit show child follow, no catchpoints"}
134 -re "Attaching after fork to.*$gdb_prompt $"\
135 {pass "explicit child follow, no catchpoints"}
136 -re "$gdb_prompt $" {fail "explicit child follow, no catchpoints"}
137 timeout {fail "(timeout) explicit child follow, no catchpoints"}
139 # The child has been detached; allow time for any output it might
140 # generate to arrive, so that output doesn't get confused with
141 # any gdb_expected debugger output from a subsequent testpoint.
146 proc catch_fork_child_follow {} {
150 send_gdb "catch fork\n"
152 -re "Catchpoint .*(fork).*$gdb_prompt $"\
153 {pass "explicit child follow, set catch fork"}
154 -re "$gdb_prompt $" {fail "explicit child follow, set catch fork"}
155 timeout {fail "(timeout) explicit child follow, set catch fork"}
158 # Verify that the catchpoint is mentioned in an "info breakpoints",
159 # and further that the catchpoint mentions no process id.
161 send_gdb "info breakpoints\n"
163 -re ".*catch fork.*keep y.*$gdb_prompt $"\
164 {pass "info shows catchpoint without pid"}
165 -re ".*catch fork.*process .*$gdb_prompt $"\
166 {fail "info shows catchpoint without pid"}
167 -re "$gdb_prompt $" {fail "info shows catchpoint without pid"}
168 timeout {fail "(timeout) info shows catchpoint without pid"}
171 send_gdb "continue\n"
173 -re "Catchpoint.*(forked process.*),.*in .*fork.*$gdb_prompt $"\
174 {pass "explicit child follow, catch fork"}
175 -re "$gdb_prompt $" {fail "explicit child follow, catch fork"}
176 timeout {fail "(timeout) explicit child follow, catch fork"}
179 # Verify that the catchpoint is mentioned in an "info breakpoints",
180 # and further that the catchpoint managed to capture a process id.
182 send_gdb "info breakpoints\n"
184 -re ".*catch fork .*process \[0-9\]+.*$gdb_prompt $"\
185 {pass "info shows catchpoint pid"}
186 -re "$gdb_prompt $" {fail "info shows catchpoint pid"}
187 timeout {fail "(timeout) info shows catchpoint pid"}
190 send_gdb "set follow child\n"
192 -re "$gdb_prompt $" {pass "set follow child"}
193 timeout {fail "(timeout) set follow child"}
195 send_gdb "tbreak ${srcfile}:24\n"
197 -re "Breakpoint.*, line 24.*$gdb_prompt $"\
198 {pass "set follow child, tbreak"}
199 -re "$gdb_prompt $" {fail "set follow child, tbreak"}
200 timeout {fail "(timeout) set follow child, tbreak"}
202 send_gdb "continue\n"
204 -re "Attaching after fork to.* at .*24.*$gdb_prompt $"\
205 {pass "set follow child, hit tbreak"}
206 -re "$gdb_prompt $" {fail "set follow child, hit tbreak"}
207 timeout {fail "(timeout) set follow child, hit tbreak"}
209 # The child has been detached; allow time for any output it might
210 # generate to arrive, so that output doesn't get confused with
211 # any expected debugger output from a subsequent testpoint.
214 send_gdb "delete breakpoints\n"
216 -re "Delete all breakpoints.*$" {
220 {pass "set follow child, cleanup"}
221 timeout {fail "(timeout) set follow child, cleanup"}
224 -re "$gdb_prompt $" {fail "set follow child, cleanup"}
225 timeout {fail "(timeout) set follow child, cleanup"}
229 proc tcatch_fork_parent_follow {} {
233 send_gdb "catch fork\n"
235 -re "Catchpoint .*(fork).*$gdb_prompt $"\
236 {pass "explicit parent follow, set tcatch fork"}
237 -re "$gdb_prompt $" {fail "explicit parent follow, set tcatch fork"}
238 timeout {fail "(timeout) explicit parent follow, set tcatch fork"}
240 # ??rehrauer: I don't yet know how to get the id of the tcatch
241 # via this script, so that I can add a -do list to it. For now,
242 # do the follow stuff after the catch happens.
244 send_gdb "continue\n"
246 -re ".*in .*fork.*$gdb_prompt $"\
247 {pass "explicit parent follow, tcatch fork"}
248 -re "$gdb_prompt $" {fail "explicit parent follow, tcatch fork"}
249 timeout {fail "(timeout) explicit parent follow, tcatch fork"}
251 send_gdb "set follow parent\n"
253 -re "$gdb_prompt $" {pass "set follow parent"}
254 timeout {fail "(timeout) set follow parent"}
256 send_gdb "tbreak ${srcfile}:24\n"
258 -re "Breakpoint.*, line 24.*$gdb_prompt $"\
259 {pass "set follow parent, tbreak"}
260 -re "$gdb_prompt $" {fail "set follow parent, tbreak"}
261 timeout {fail "(timeout) set follow child, tbreak"}
263 send_gdb "continue\n"
265 -re ".*Detaching after fork from.* at .*24.*$gdb_prompt $"\
266 {pass "set follow parent, hit tbreak"}
267 -re "$gdb_prompt $" {fail "set follow parent, hit tbreak"}
268 timeout {fail "(timeout) set follow parent, hit tbreak"}
270 # The child has been detached; allow time for any output it might
271 # generate to arrive, so that output doesn't get confused with
272 # any expected debugger output from a subsequent testpoint.
275 send_gdb "delete breakpoints\n"
277 -re "Delete all breakpoints.*$" {
281 {pass "set follow parent, cleanup"}
282 timeout {fail "(timeout) set follow parent, cleanup"}
285 -re "$gdb_prompt $" {fail "set follow parent, cleanup"}
286 timeout {fail "(timeout) set follow parent, cleanup"}
290 proc do_fork_tests {} {
293 # Verify that help is available for "set follow-fork-mode".
295 send_gdb "help set follow-fork-mode\n"
297 -re "Set debugger response to a program call of fork or vfork..*
298 A fork or vfork creates a new process. follow-fork-mode can be:.*
299 .*parent - the original process is debugged after a fork.*
300 .*child - the new process is debugged after a fork.*
301 The unfollowed process will continue to run..*
302 By default, the debugger will follow the parent process..*$gdb_prompt $"\
303 { pass "help set follow" }
304 -re "$gdb_prompt $" { fail "help set follow" }
305 timeout { fail "(timeout) help set follow" }
308 # Verify that we can set follow-fork-mode, using an abbreviation
309 # for both the flag and its value.
311 send_gdb "set follow ch\n"
312 send_gdb "show fol\n"
314 -re "Debugger response to a program call of fork or vfork is \"child\".*$gdb_prompt $"\
315 {pass "set follow, using abbreviations"}
316 timeout {fail "(timeout) set follow, using abbreviations"}
319 # Verify that we cannot set follow-fork-mode to nonsense.
321 send_gdb "set follow chork\n"
323 -re "Undefined item: \"chork\".*$gdb_prompt $"\
324 {pass "set follow to nonsense is prohibited"}
325 -re "$gdb_prompt $" {fail "set follow to nonsense is prohibited"}
326 timeout {fail "(timeout) set follow to nonsense is prohibited"}
328 send_gdb "set follow parent\n"
330 -re "$gdb_prompt $" {pass "set follow to nonsense is prohibited (reset parent)"}
331 timeout {fail "set follow to nonsense is prohibited (reset parent)"}
334 # Check that fork catchpoints are supported, as an indicator for whether
335 # fork-following is supported.
336 if [runto_main] then { check_fork_catchpoints }
338 # Test the default behaviour, which is to follow the parent of a
339 # fork, and detach from the child. Do this without catchpoints.
341 if [runto_main] then { default_fork_parent_follow }
343 # Test the ability to explicitly follow the parent of a fork, and
344 # detach from the child. Do this without catchpoints.
346 if [runto_main] then { explicit_fork_parent_follow }
348 # Test the ability to follow the child of a fork, and detach from
349 # the parent. Do this without catchpoints.
351 if [runto_main] then { explicit_fork_child_follow }
353 # Test the ability to follow both child and parent of a fork. Do
354 # this without catchpoints.
355 # ??rehrauer: NYI. Will add testpoints here when implemented.
358 # Test the ability to have the debugger ask the user at fork-time
359 # whether to follow the parent, child or both. Do this without
361 # ??rehrauer: NYI. Will add testpoints here when implemented.
364 # Test the ability to catch a fork, specify that the child be
365 # followed, and continue. Make the catchpoint permanent.
367 if [runto_main] then { catch_fork_child_follow }
369 # Test the ability to catch a fork, specify via a -do clause that
370 # the parent be followed, and continue. Make the catchpoint temporary.
372 if [runto_main] then { tcatch_fork_parent_follow }
375 # Start with a fresh gdb
379 gdb_reinitialize_dir $srcdir/$subdir
382 # The "Detaching..." and "Attaching..." messages may be hidden by
384 gdb_test "set verbose" ""
386 # This is a test of gdb's ability to follow the parent, child or both
387 # parent and child of a Unix fork() system call.