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