| 1 |
25 |
jlechner |
# Copyright 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
|
| 2 |
|
|
# Free Software Foundation, Inc.
|
| 3 |
|
|
|
| 4 |
|
|
# This program is free software; you can redistribute it and/or modify
|
| 5 |
|
|
# it under the terms of the GNU General Public License as published by
|
| 6 |
|
|
# the Free Software Foundation; either version 3 of the License, or
|
| 7 |
|
|
# (at your option) any later version.
|
| 8 |
|
|
#
|
| 9 |
|
|
# This program is distributed in the hope that it will be useful,
|
| 10 |
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 11 |
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 12 |
|
|
# GNU General Public License for more details.
|
| 13 |
|
|
#
|
| 14 |
|
|
# You should have received a copy of the GNU General Public License
|
| 15 |
|
|
# along with this program. If not, see .
|
| 16 |
|
|
|
| 17 |
|
|
# Please email any bugs, comments, and/or additions to this file to:
|
| 18 |
|
|
# bug-gdb@gnu.org
|
| 19 |
|
|
|
| 20 |
|
|
#### Dining Philosophers, on LinuxThreads - Jim Blandy
|
| 21 |
|
|
####
|
| 22 |
|
|
#### At the moment, GDB's support for LinuxThreads is pretty
|
| 23 |
|
|
#### idiosyncratic --- GDB's output doesn't look much like the output
|
| 24 |
|
|
#### it produces for other thread implementations, messages appear at
|
| 25 |
|
|
#### different times, etc. So these tests are specific to LinuxThreads.
|
| 26 |
|
|
####
|
| 27 |
|
|
#### However, if all goes well, Linux will soon have a libthread_db
|
| 28 |
|
|
#### interface, and GDB will manage it the same way it does other
|
| 29 |
|
|
#### libthread_db-based systems. Then, we can adjust this file to
|
| 30 |
|
|
#### work with any such system.
|
| 31 |
|
|
|
| 32 |
|
|
### Other things we ought to test:
|
| 33 |
|
|
### stepping a thread while others are running
|
| 34 |
|
|
### killing and restarting
|
| 35 |
|
|
### quitting gracefully
|
| 36 |
|
|
|
| 37 |
|
|
if $tracelevel then {
|
| 38 |
|
|
strace $tracelevel
|
| 39 |
|
|
}
|
| 40 |
|
|
|
| 41 |
|
|
set prms_id 0
|
| 42 |
|
|
set bug_id 0
|
| 43 |
|
|
|
| 44 |
|
|
# This only works with Linux configurations.
|
| 45 |
|
|
if ![istarget *-*-linux-gnu*] then {
|
| 46 |
|
|
return
|
| 47 |
|
|
}
|
| 48 |
|
|
|
| 49 |
|
|
set testfile "linux-dp"
|
| 50 |
|
|
set srcfile ${testfile}.c
|
| 51 |
|
|
set binfile ${objdir}/${subdir}/${testfile}
|
| 52 |
|
|
if {[gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug libs=-lpthread}] != ""} {
|
| 53 |
|
|
return -1
|
| 54 |
|
|
}
|
| 55 |
|
|
|
| 56 |
|
|
gdb_start
|
| 57 |
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
| 58 |
|
|
gdb_load ${binfile}
|
| 59 |
|
|
send_gdb "set print sevenbit-strings\n" ; gdb_expect -re "$gdb_prompt $"
|
| 60 |
|
|
runto_main
|
| 61 |
|
|
|
| 62 |
|
|
# There should be no threads initially.
|
| 63 |
|
|
gdb_test "info threads" "" "info threads 1"
|
| 64 |
|
|
|
| 65 |
|
|
# Try stepping over the thread creation function.
|
| 66 |
|
|
gdb_breakpoint [gdb_get_line_number "linuxthreads.exp: create philosopher"]
|
| 67 |
|
|
set expect_manager -1
|
| 68 |
|
|
for {set i 0} {$i < 5} {incr i} {
|
| 69 |
|
|
gdb_continue_to_breakpoint "about to create philosopher: $i"
|
| 70 |
|
|
send_gdb "info threads\n"
|
| 71 |
|
|
set threads_before {}
|
| 72 |
|
|
gdb_expect {
|
| 73 |
|
|
-re "info threads\r\n" {
|
| 74 |
|
|
exp_continue
|
| 75 |
|
|
}
|
| 76 |
|
|
-re "^. +(\[0-9\]+ Thread \[-0-9a-fx\]+) \[^\n\]*\n" {
|
| 77 |
|
|
verbose -log "found thread $expect_out(1,string)" 2
|
| 78 |
|
|
lappend threads_before $expect_out(1,string)
|
| 79 |
|
|
exp_continue
|
| 80 |
|
|
}
|
| 81 |
|
|
-re "^\[^\n\]*\n" {
|
| 82 |
|
|
verbose -log "skipping line" 2
|
| 83 |
|
|
}
|
| 84 |
|
|
-re "^$gdb_prompt $" {
|
| 85 |
|
|
}
|
| 86 |
|
|
timeout {
|
| 87 |
|
|
fail "(timeout) info threads before: $i"
|
| 88 |
|
|
}
|
| 89 |
|
|
}
|
| 90 |
|
|
send_gdb "next\n"
|
| 91 |
|
|
set threads_created 0
|
| 92 |
|
|
gdb_expect {
|
| 93 |
|
|
-re "^next\r\n" {
|
| 94 |
|
|
exp_continue
|
| 95 |
|
|
}
|
| 96 |
|
|
-re "^ *\[_!\] \[0-9\]* \[_!\]\r\n" {
|
| 97 |
|
|
# Ignore program output.
|
| 98 |
|
|
exp_continue -continue_timer
|
| 99 |
|
|
}
|
| 100 |
|
|
-re "^\\\[New \[^\]\n\]+\\\]\[^\n\]+\n" {
|
| 101 |
|
|
incr threads_created
|
| 102 |
|
|
exp_continue
|
| 103 |
|
|
}
|
| 104 |
|
|
-re "^189\[^\n\]+\n" {
|
| 105 |
|
|
exp_continue
|
| 106 |
|
|
}
|
| 107 |
|
|
-re "^$gdb_prompt $" {
|
| 108 |
|
|
}
|
| 109 |
|
|
-re "Program received signal.*(Unknown signal|SIGUSR|Real-time event).*$gdb_prompt $" {
|
| 110 |
|
|
# It would be nice if we could catch the message that GDB prints
|
| 111 |
|
|
# when it first notices that the thread library doesn't support
|
| 112 |
|
|
# debugging, or if we could explicitly ask GDB somehow.
|
| 113 |
|
|
unsupported "This GDB does not support threads on this system."
|
| 114 |
|
|
return -1
|
| 115 |
|
|
}
|
| 116 |
|
|
-re "$gdb_prompt $" {
|
| 117 |
|
|
}
|
| 118 |
|
|
timeout {
|
| 119 |
|
|
fail "(timeout) create philosopher: $i"
|
| 120 |
|
|
}
|
| 121 |
|
|
}
|
| 122 |
|
|
if { $threads_created == 0 } {
|
| 123 |
|
|
# Not all targets announce new threads as they are created.
|
| 124 |
|
|
# For example, the GDB
|
| 125 |
|
|
# remote protocol target only finds out about threads when
|
| 126 |
|
|
# they actually report some event like a breakpoint hit,
|
| 127 |
|
|
# or when the user types 'info threads'.
|
| 128 |
|
|
unsupported "create philosopher: $i"
|
| 129 |
|
|
} elseif { $threads_created == 1 } {
|
| 130 |
|
|
if { $expect_manager < 0 } {
|
| 131 |
|
|
set expect_manager 0
|
| 132 |
|
|
}
|
| 133 |
|
|
pass "create philosopher: $i"
|
| 134 |
|
|
} elseif { !$i && $threads_created == 2 } {
|
| 135 |
|
|
# Two threads are created the first time in LinuxThreads,
|
| 136 |
|
|
# where the second is the manager thread. In NPTL, there is none.
|
| 137 |
|
|
set expect_manager 1
|
| 138 |
|
|
pass "create philosopher: $i"
|
| 139 |
|
|
} else {
|
| 140 |
|
|
fail "create philosopher: $i"
|
| 141 |
|
|
}
|
| 142 |
|
|
|
| 143 |
|
|
send_gdb "info threads\n"
|
| 144 |
|
|
set threads_after {}
|
| 145 |
|
|
gdb_expect {
|
| 146 |
|
|
-re "info threads\r\n" {
|
| 147 |
|
|
exp_continue
|
| 148 |
|
|
}
|
| 149 |
|
|
-re "^. +(\[0-9\]+ Thread \[-0-9a-fx\]+) \[^\n\]*\n" {
|
| 150 |
|
|
set name $expect_out(1,string)
|
| 151 |
|
|
for {set j 0} {$j != [llength $threads_before] } {incr j} {
|
| 152 |
|
|
if {$name == [lindex $threads_before $j]} {
|
| 153 |
|
|
set threads_before [lreplace $threads_before $j $j]
|
| 154 |
|
|
set name ""
|
| 155 |
|
|
break
|
| 156 |
|
|
}
|
| 157 |
|
|
}
|
| 158 |
|
|
if { $name != "" } {
|
| 159 |
|
|
lappend threads_after $name
|
| 160 |
|
|
}
|
| 161 |
|
|
exp_continue
|
| 162 |
|
|
}
|
| 163 |
|
|
-re "^\[^\n\]*\n" {
|
| 164 |
|
|
verbose -log "skipping line" 2
|
| 165 |
|
|
}
|
| 166 |
|
|
-re "^$gdb_prompt $" {
|
| 167 |
|
|
if { [llength $threads_before] != 0 } {
|
| 168 |
|
|
fail "info threads after: $i"
|
| 169 |
|
|
} elseif { !$i && [llength $threads_after] == 2 } {
|
| 170 |
|
|
set expect_manager 1
|
| 171 |
|
|
pass "info threads after: $i"
|
| 172 |
|
|
} elseif { [llength $threads_after] == 1 } {
|
| 173 |
|
|
if { $expect_manager < 0 } {
|
| 174 |
|
|
set expect_manager 0
|
| 175 |
|
|
}
|
| 176 |
|
|
pass "info threads after: $i"
|
| 177 |
|
|
} else {
|
| 178 |
|
|
fail "info threads after: $i"
|
| 179 |
|
|
}
|
| 180 |
|
|
}
|
| 181 |
|
|
timeout {
|
| 182 |
|
|
fail "(timeout) info threads after: $i"
|
| 183 |
|
|
}
|
| 184 |
|
|
}
|
| 185 |
|
|
|
| 186 |
|
|
}
|
| 187 |
|
|
|
| 188 |
|
|
set nthreads 6
|
| 189 |
|
|
|
| 190 |
|
|
# Run until there are some threads.
|
| 191 |
|
|
gdb_breakpoint [gdb_get_line_number "linuxthreads.exp: info threads 2"]
|
| 192 |
|
|
gdb_continue_to_breakpoint "main thread's sleep"
|
| 193 |
|
|
set info_threads_ptn ""
|
| 194 |
|
|
for {set i $nthreads} {$i > 0} {incr i -1} {
|
| 195 |
|
|
append info_threads_ptn "$i Thread .*"
|
| 196 |
|
|
}
|
| 197 |
|
|
append info_threads_ptn "\[\r\n\]+$gdb_prompt $"
|
| 198 |
|
|
set info_threads_manager_ptn "[expr $nthreads + 1] Thread .*$info_threads_ptn"
|
| 199 |
|
|
|
| 200 |
|
|
gdb_test_multiple "info threads" "info threads 2" {
|
| 201 |
|
|
-re "$info_threads_manager_ptn" {
|
| 202 |
|
|
# We did see a manager thread. Check that against what we expected.
|
| 203 |
|
|
switch -exact -- $expect_manager {
|
| 204 |
|
|
-1 {
|
| 205 |
|
|
# We weren't sure whether to expect a manager thread.
|
| 206 |
|
|
pass "info threads 2"
|
| 207 |
|
|
}
|
| 208 |
|
|
1 {
|
| 209 |
|
|
# We were expecting a manager thread.
|
| 210 |
|
|
pass "info threads 2"
|
| 211 |
|
|
}
|
| 212 |
|
|
|
| 213 |
|
|
# We were not expecting to see the manager thread.
|
| 214 |
|
|
fail "info threads 2"
|
| 215 |
|
|
}
|
| 216 |
|
|
}
|
| 217 |
|
|
set expect_manager 1
|
| 218 |
|
|
incr nthreads
|
| 219 |
|
|
}
|
| 220 |
|
|
-re "$info_threads_ptn" {
|
| 221 |
|
|
# We did not see a manager thread. Check that against what we
|
| 222 |
|
|
# expected.
|
| 223 |
|
|
switch -exact -- $expect_manager {
|
| 224 |
|
|
-1 {
|
| 225 |
|
|
# We weren't sure whether to expect a manager thread.
|
| 226 |
|
|
# Don't expect it from here on out.
|
| 227 |
|
|
pass "info threads 2"
|
| 228 |
|
|
}
|
| 229 |
|
|
1 {
|
| 230 |
|
|
# We were expecting a manager thread, but we didn't see one.
|
| 231 |
|
|
fail "info threads 2"
|
| 232 |
|
|
}
|
| 233 |
|
|
|
| 234 |
|
|
# We were not expecting to see the manager thread.
|
| 235 |
|
|
pass "info threads 2"
|
| 236 |
|
|
}
|
| 237 |
|
|
}
|
| 238 |
|
|
set expect_manager 0
|
| 239 |
|
|
}
|
| 240 |
|
|
}
|
| 241 |
|
|
|
| 242 |
|
|
|
| 243 |
|
|
# Try setting a thread-specific breakpoint.
|
| 244 |
|
|
gdb_breakpoint "print_philosopher thread 5"
|
| 245 |
|
|
gdb_continue_to_breakpoint "thread 5's print"
|
| 246 |
|
|
# When there is no debugging info available for the thread library,
|
| 247 |
|
|
# the backtrace entry for philosopher's caller looks like:
|
| 248 |
|
|
# #1 0x4001c548 in pthread_create () from /lib/libpthread.so.0
|
| 249 |
|
|
# If you do have debug info, the output obviously depends more on the
|
| 250 |
|
|
# exact library in use; under NPTL, you get:
|
| 251 |
|
|
# #2 0x0012b7fc in start_thread (arg=0x21) at pthread_create.c:264
|
| 252 |
|
|
gdb_test "where" "print_philosopher.*philosopher.* \(from .*libpthread\|at pthread_create\).*" \
|
| 253 |
|
|
"first thread-specific breakpoint hit"
|
| 254 |
|
|
|
| 255 |
|
|
# Make sure it's catching the right thread. Try hitting the
|
| 256 |
|
|
# breakpoint ten times, and make sure we don't get anyone else.
|
| 257 |
|
|
set only_five 1
|
| 258 |
|
|
for {set i 0} {$only_five > 0 && $i < 10} {incr i} {
|
| 259 |
|
|
gdb_continue_to_breakpoint "thread 5's print, pass: $i"
|
| 260 |
|
|
send_gdb "info threads\n"
|
| 261 |
|
|
gdb_expect {
|
| 262 |
|
|
-re "\\* 5 Thread .* print_philosopher .*\r\n$gdb_prompt $" {
|
| 263 |
|
|
# Okay this time.
|
| 264 |
|
|
}
|
| 265 |
|
|
-re ".*$gdb_prompt $" {
|
| 266 |
|
|
set only_five 0
|
| 267 |
|
|
}
|
| 268 |
|
|
timeout {
|
| 269 |
|
|
set only_five -1
|
| 270 |
|
|
}
|
| 271 |
|
|
}
|
| 272 |
|
|
}
|
| 273 |
|
|
|
| 274 |
|
|
set name "thread-specific breakpoint is thread-specific"
|
| 275 |
|
|
if {$only_five == 1} { pass $name }
|
| 276 |
|
|
if {$only_five == 0} { fail $name }
|
| 277 |
|
|
if {$only_five == -1} { fail "$name (timeout)" }
|
| 278 |
|
|
|
| 279 |
|
|
|
| 280 |
|
|
### Select a particular thread.
|
| 281 |
|
|
proc select_thread {thread} {
|
| 282 |
|
|
global gdb_prompt
|
| 283 |
|
|
|
| 284 |
|
|
send_gdb "thread $thread\n"
|
| 285 |
|
|
gdb_expect {
|
| 286 |
|
|
-re "\\\[Switching to thread .*\\\].*\r\n$gdb_prompt $" {
|
| 287 |
|
|
pass "selected thread: $thread"
|
| 288 |
|
|
}
|
| 289 |
|
|
-re "$gdb_prompt $" {
|
| 290 |
|
|
fail "selected thread: $thread"
|
| 291 |
|
|
}
|
| 292 |
|
|
timeout {
|
| 293 |
|
|
fail "selected thread: $thread (timeout)"
|
| 294 |
|
|
}
|
| 295 |
|
|
}
|
| 296 |
|
|
}
|
| 297 |
|
|
|
| 298 |
|
|
### Select THREAD, check for a plausible backtrace, and make sure
|
| 299 |
|
|
### we're actually selecting a different philosopher each time.
|
| 300 |
|
|
### Return true if the thread had a stack which was not only
|
| 301 |
|
|
### acceptable, but interesting. SEEN should be an array in which
|
| 302 |
|
|
### SEEN(N) exists iff we have found philosopher number N before.
|
| 303 |
|
|
|
| 304 |
|
|
set main_seen 0
|
| 305 |
|
|
set manager_seen 0
|
| 306 |
|
|
|
| 307 |
|
|
proc check_philosopher_stack {thread seen_name} {
|
| 308 |
|
|
global gdb_prompt
|
| 309 |
|
|
upvar $seen_name seen
|
| 310 |
|
|
global main_seen
|
| 311 |
|
|
global expect_manager manager_seen
|
| 312 |
|
|
|
| 313 |
|
|
set name "philosopher is distinct: $thread"
|
| 314 |
|
|
set interesting 0
|
| 315 |
|
|
|
| 316 |
|
|
select_thread $thread
|
| 317 |
|
|
send_gdb "where\n"
|
| 318 |
|
|
gdb_expect {
|
| 319 |
|
|
-re ".* in philosopher \\(data=(0x\[0-9a-f\]+).*\r\n$gdb_prompt $" {
|
| 320 |
|
|
set data $expect_out(1,string)
|
| 321 |
|
|
if {[info exists seen($data)]} {
|
| 322 |
|
|
fail $name
|
| 323 |
|
|
} else {
|
| 324 |
|
|
pass $name
|
| 325 |
|
|
set seen($data) yep
|
| 326 |
|
|
}
|
| 327 |
|
|
set interesting 1
|
| 328 |
|
|
}
|
| 329 |
|
|
-re ".* in __pthread_manager \\(.*$gdb_prompt $" {
|
| 330 |
|
|
if {$manager_seen == 1} {
|
| 331 |
|
|
fail "manager thread is distinct: $thread"
|
| 332 |
|
|
} else {
|
| 333 |
|
|
set manager_seen 1
|
| 334 |
|
|
pass "manager thread is distinct: $thread"
|
| 335 |
|
|
}
|
| 336 |
|
|
set interesting 1
|
| 337 |
|
|
}
|
| 338 |
|
|
-re "pthread_start_thread.*\r\n$gdb_prompt $" {
|
| 339 |
|
|
## Maybe the thread hasn't started yet.
|
| 340 |
|
|
pass $name
|
| 341 |
|
|
}
|
| 342 |
|
|
-re ".* in main \\(.*$gdb_prompt $" {
|
| 343 |
|
|
if {$main_seen == 1} {
|
| 344 |
|
|
fail "main is distinct: $thread"
|
| 345 |
|
|
} else {
|
| 346 |
|
|
set main_seen 1
|
| 347 |
|
|
pass "main is distinct: $thread"
|
| 348 |
|
|
}
|
| 349 |
|
|
set interesting 1
|
| 350 |
|
|
}
|
| 351 |
|
|
-re " in \\?\\?.*\r\n$gdb_prompt $" {
|
| 352 |
|
|
## Sometimes we can't get a backtrace. I'm going to call
|
| 353 |
|
|
## this a pass, since we do verify that at least one
|
| 354 |
|
|
## thread was interesting, so we can get more consistent
|
| 355 |
|
|
## test suite totals. But in my heart, I think it should
|
| 356 |
|
|
## be an xfail.
|
| 357 |
|
|
pass $name
|
| 358 |
|
|
}
|
| 359 |
|
|
-re "$gdb_prompt $" {
|
| 360 |
|
|
fail $name
|
| 361 |
|
|
}
|
| 362 |
|
|
timeout {
|
| 363 |
|
|
fail "$name (timeout)"
|
| 364 |
|
|
}
|
| 365 |
|
|
}
|
| 366 |
|
|
|
| 367 |
|
|
return $interesting
|
| 368 |
|
|
}
|
| 369 |
|
|
|
| 370 |
|
|
set any_interesting 0
|
| 371 |
|
|
array set seen {}
|
| 372 |
|
|
unset seen
|
| 373 |
|
|
for {set i 1} {$i <= $nthreads} {incr i} {
|
| 374 |
|
|
if [check_philosopher_stack $i seen] {
|
| 375 |
|
|
set any_interesting 1
|
| 376 |
|
|
}
|
| 377 |
|
|
}
|
| 378 |
|
|
|
| 379 |
|
|
if {$any_interesting} {
|
| 380 |
|
|
pass "found an interesting thread"
|
| 381 |
|
|
} else {
|
| 382 |
|
|
fail "found an interesting thread"
|
| 383 |
|
|
}
|
| 384 |
|
|
|
| 385 |
|
|
if {$manager_seen == $expect_manager} {
|
| 386 |
|
|
pass "manager thread found (not found) when expected"
|
| 387 |
|
|
} else {
|
| 388 |
|
|
fail "manager thread found (not found) when expected"
|
| 389 |
|
|
}
|
