| 1 | # Copyright (C) 1996, 1997, 2002, 2003, 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 <http://www.gnu.org/licenses/>. |
| 16 | |
| 17 | # Please email any bugs, comments, and/or additions to this file to: |
| 18 | # bug-gdb@prep.ai.mit.edu |
| 19 | |
| 20 | # This file was written by Daniel Jacobowitz <drow@mvista.com> |
| 21 | # (parts based on pthreads.exp by Fred Fish (fnf@cygnus.com). |
| 22 | # |
| 23 | # This test covers the various forms of "set scheduler-locking". |
| 24 | |
| 25 | if $tracelevel then { |
| 26 | strace $tracelevel |
| 27 | } |
| 28 | |
| 29 | set prms_id 0 |
| 30 | set bug_id 0 |
| 31 | |
| 32 | set testfile "schedlock" |
| 33 | set srcfile ${testfile}.c |
| 34 | set binfile ${objdir}/${subdir}/${testfile} |
| 35 | |
| 36 | # The number of threads, including the main thread. |
| 37 | set NUM 2 |
| 38 | |
| 39 | if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } { |
| 40 | return -1 |
| 41 | } |
| 42 | |
| 43 | # Now we can proceed with the real testing. |
| 44 | |
| 45 | proc get_args { } { |
| 46 | global list_count |
| 47 | global gdb_prompt |
| 48 | global NUM |
| 49 | |
| 50 | set pattern "(\[0-9\]+)" |
| 51 | for {set i 1} {[expr $i < $NUM]} {incr i} { |
| 52 | append pattern ", (\[0-9\]+)" |
| 53 | } |
| 54 | |
| 55 | send_gdb "print args\n" |
| 56 | gdb_expect { |
| 57 | -re "\\\$\[0-9\]+ = {$pattern}.*$gdb_prompt" |
| 58 | { |
| 59 | set list_count [expr $list_count + 1] |
| 60 | pass "listed args ($list_count)" |
| 61 | |
| 62 | set result "" |
| 63 | for {set i 1} {[expr $i <= $NUM]} {incr i} { |
| 64 | lappend result $expect_out($i,string) |
| 65 | } |
| 66 | return $result |
| 67 | } |
| 68 | -re "$gdb_prompt" |
| 69 | { |
| 70 | fail "listed args ($list_count) (unknown output)" |
| 71 | } |
| 72 | timeout |
| 73 | { |
| 74 | fail "listed args ($list_count) (timeout)" |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | proc stop_process { description } { |
| 80 | global gdb_prompt |
| 81 | |
| 82 | # For this to work we must be sure to consume the "Continuing." |
| 83 | # message first, or GDB's signal handler may not be in place. |
| 84 | after 1000 {send_gdb "\003"} |
| 85 | gdb_expect { |
| 86 | -re "Program received signal SIGINT.*$gdb_prompt $" |
| 87 | { |
| 88 | pass $description |
| 89 | } |
| 90 | timeout |
| 91 | { |
| 92 | fail "$description (timeout)" |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | proc get_current_thread { description } { |
| 98 | global gdb_prompt |
| 99 | |
| 100 | send_gdb "bt\n" |
| 101 | gdb_expect { |
| 102 | -re "thread_function \\(arg=0x(\[0-9\])\\).*$gdb_prompt $" |
| 103 | { |
| 104 | pass $description |
| 105 | return $expect_out(1,string) |
| 106 | } |
| 107 | -re "$gdb_prompt $" |
| 108 | { |
| 109 | fail "$description (unknown output)" |
| 110 | } |
| 111 | timeout |
| 112 | { |
| 113 | fail "$description (timeout)" |
| 114 | } |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | proc my_continue { msg } { |
| 119 | send_gdb "continue\n" |
| 120 | gdb_expect { |
| 121 | -re "Continuing" |
| 122 | { pass "continue ($msg)" } |
| 123 | timeout |
| 124 | { fail "continue ($msg) (timeout)" } |
| 125 | } |
| 126 | |
| 127 | stop_process "stop all threads ($msg)" |
| 128 | |
| 129 | # Make sure we're in one of the non-main looping threads. |
| 130 | gdb_breakpoint [concat [gdb_get_line_number "schedlock.exp: main loop"] " if arg != 0"] |
| 131 | gdb_continue_to_breakpoint "return to loop ($msg)" |
| 132 | delete_breakpoints |
| 133 | } |
| 134 | |
| 135 | proc step_ten_loops { msg } { |
| 136 | global gdb_prompt |
| 137 | |
| 138 | for {set i 0} {[expr $i < 10]} {set i [expr $i + 1]} { |
| 139 | send_gdb "step\n" |
| 140 | set other_step 0 |
| 141 | gdb_expect { |
| 142 | -re ".*myp\\) \\+\\+;\[\r\n\]+$gdb_prompt $" { |
| 143 | pass "step to increment ($msg $i)" |
| 144 | } |
| 145 | -re "$gdb_prompt $" { |
| 146 | if {$other_step == 0} { |
| 147 | set other_step 1 |
| 148 | send_gdb "step\n" |
| 149 | exp_continue |
| 150 | } else { |
| 151 | fail "step to increment ($msg $i)" |
| 152 | # FIXME cascade? |
| 153 | } |
| 154 | } |
| 155 | timeout { |
| 156 | fail "step to increment ($msg $i) (timeout)" |
| 157 | } |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | # Start with a fresh gdb. |
| 163 | |
| 164 | gdb_exit |
| 165 | gdb_start |
| 166 | gdb_reinitialize_dir $srcdir/$subdir |
| 167 | |
| 168 | # We'll need this when we send_gdb a ^C to GDB. Need to do it before we |
| 169 | # run the program and gdb starts saving and restoring tty states. |
| 170 | # On Ultrix, we don't need it and it is really slow (because shell_escape |
| 171 | # doesn't use vfork). |
| 172 | if ![istarget "*-*-ultrix*"] then { |
| 173 | gdb_test "shell stty intr '^C'" "" |
| 174 | } |
| 175 | |
| 176 | gdb_load ${binfile} |
| 177 | |
| 178 | gdb_test "set print sevenbit-strings" "" |
| 179 | gdb_test "set width 0" "" |
| 180 | |
| 181 | runto_main |
| 182 | |
| 183 | # See if scheduler locking is available on this target. |
| 184 | send_gdb "set scheduler-locking off\n" |
| 185 | global gdb_prompt |
| 186 | gdb_expect { |
| 187 | -re "Target .* cannot support this command" |
| 188 | { |
| 189 | unsupported "target does not support scheduler locking" |
| 190 | return |
| 191 | } |
| 192 | -re "$gdb_prompt $" |
| 193 | { |
| 194 | pass "scheduler locking set to none" |
| 195 | } |
| 196 | timeout |
| 197 | { |
| 198 | unsupported "target does not support scheduler locking (timeout)" |
| 199 | return |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | gdb_breakpoint [gdb_get_line_number "schedlock.exp: last thread start"] |
| 204 | gdb_continue_to_breakpoint "all threads started" |
| 205 | |
| 206 | global list_count |
| 207 | set list_count 0 |
| 208 | |
| 209 | set start_args [get_args] |
| 210 | |
| 211 | # First make sure that all threads are alive. |
| 212 | my_continue "initial" |
| 213 | |
| 214 | set cont_args [get_args] |
| 215 | |
| 216 | set bad 0 |
| 217 | for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} { |
| 218 | if {[lindex $start_args $i] == [lindex $cont_args $i]} { |
| 219 | incr bad |
| 220 | } |
| 221 | } |
| 222 | if { $bad == 0 } { |
| 223 | pass "all threads alive" |
| 224 | } else { |
| 225 | fail "all threads alive ($bad/$NUM did not run)" |
| 226 | } |
| 227 | |
| 228 | # We can't change threads, unfortunately, in current GDB. Use |
| 229 | # whichever we stopped in. |
| 230 | set curthread [get_current_thread "find current thread (1)"] |
| 231 | |
| 232 | |
| 233 | |
| 234 | |
| 235 | # Test stepping without scheduler locking. |
| 236 | gdb_test "set scheduler-locking off" "" |
| 237 | |
| 238 | step_ten_loops "unlocked" |
| 239 | |
| 240 | # Make sure we're still in the same thread. |
| 241 | set newthread [get_current_thread "find current thread (2)"] |
| 242 | if {$curthread == $newthread} { |
| 243 | pass "step without lock does not change thread" |
| 244 | } else { |
| 245 | fail "step without lock does not change thread (switched to thread $newthread)" |
| 246 | } |
| 247 | |
| 248 | set start_args $cont_args |
| 249 | set cont_args [get_args] |
| 250 | |
| 251 | set num_other_threads 0 |
| 252 | for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} { |
| 253 | if {[lindex $start_args $i] == [lindex $cont_args $i]} { |
| 254 | if {$i == $curthread} { |
| 255 | fail "current thread stepped (didn't run)" |
| 256 | } |
| 257 | } else { |
| 258 | if {$i == $curthread} { |
| 259 | if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} { |
| 260 | pass "current thread stepped" |
| 261 | } else { |
| 262 | fail "current thread stepped (wrong amount)" |
| 263 | } |
| 264 | } else { |
| 265 | set num_other_threads [expr $num_other_threads + 1] |
| 266 | } |
| 267 | } |
| 268 | } |
| 269 | if {$num_other_threads > 0} { |
| 270 | pass "other threads ran - unlocked" |
| 271 | } else { |
| 272 | fail "other threads ran - unlocked" |
| 273 | } |
| 274 | |
| 275 | # Test continue with scheduler locking |
| 276 | gdb_test "set scheduler-locking on" "" |
| 277 | |
| 278 | my_continue "with lock" |
| 279 | |
| 280 | # Make sure we're still in the same thread. |
| 281 | set newthread [get_current_thread "find current thread (3)"] |
| 282 | if {$curthread == $newthread} { |
| 283 | pass "continue with lock does not change thread" |
| 284 | } else { |
| 285 | fail "continue with lock does not change thread (switched to thread $newthread)" |
| 286 | } |
| 287 | |
| 288 | set start_args $cont_args |
| 289 | set cont_args [get_args] |
| 290 | |
| 291 | set num_other_threads 0 |
| 292 | for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} { |
| 293 | if {[lindex $start_args $i] == [lindex $cont_args $i]} { |
| 294 | if {$i == $curthread} { |
| 295 | fail "current thread ran (didn't run)" |
| 296 | } |
| 297 | } else { |
| 298 | if {$i == $curthread} { |
| 299 | pass "current thread ran" |
| 300 | } else { |
| 301 | incr num_other_threads |
| 302 | } |
| 303 | } |
| 304 | } |
| 305 | if {$num_other_threads > 0} { |
| 306 | fail "other threads didn't run - locked" |
| 307 | } else { |
| 308 | pass "other threads didn't run - locked" |
| 309 | } |
| 310 | |
| 311 | # Test stepping with scheduler locking |
| 312 | step_ten_loops "locked" |
| 313 | |
| 314 | # Make sure we're still in the same thread. |
| 315 | set newthread [get_current_thread "find current thread (2)"] |
| 316 | if {$curthread == $newthread} { |
| 317 | pass "step with lock does not change thread" |
| 318 | } else { |
| 319 | fail "step with lock does not change thread (switched to thread $newthread)" |
| 320 | } |
| 321 | |
| 322 | set start_args $cont_args |
| 323 | set cont_args [get_args] |
| 324 | |
| 325 | set num_other_threads 0 |
| 326 | for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} { |
| 327 | if {[lindex $start_args $i] == [lindex $cont_args $i]} { |
| 328 | if {$i == $curthread} { |
| 329 | fail "current thread stepped locked (didn't run)" |
| 330 | } |
| 331 | } else { |
| 332 | if {$i == $curthread} { |
| 333 | if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} { |
| 334 | pass "current thread stepped locked" |
| 335 | } else { |
| 336 | fail "current thread stepped locked (wrong amount)" |
| 337 | } |
| 338 | } else { |
| 339 | incr num_other_threads |
| 340 | } |
| 341 | } |
| 342 | } |
| 343 | if {$num_other_threads > 0} { |
| 344 | fail "other threads didn't run - step locked" |
| 345 | } else { |
| 346 | pass "other threads didn't run - step locked" |
| 347 | } |
| 348 | |
| 349 | return 0 |