gdb/testsuite/gdb.threads/pthreads.exp

   1 # Copyright (C) 1996-2015 Free Software Foundation, Inc.
   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
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   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.
  12 #
  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/>.
  15
  16 # This file was written by Fred Fish. (fnf@cygnus.com)
  17
  18
  19 standard_testfile
  20
  21 # regexp for "horizontal" text (i.e. doesn't include newline or
  22 # carriage return)
  23 set horiz "\[^\n\r\]*"
  24
  25 if [istarget "*-*-linux"] then {
  26     set target_cflags "-D_MIT_POSIX_THREADS"
  27 } else {
  28     set target_cflags ""
  29 }
  30
  31 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } {
  32     return -1
  33 }
  34
  35 clean_restart ${binfile}
  36
  37 gdb_test_no_output "set print sevenbit-strings"
  38 #gdb_test_no_output "set print address off"
  39 gdb_test_no_output "set width 0"
  40
  41 # We'll need this when we send_gdb a ^C to GDB.  Need to do it before we
  42 # run the program and gdb starts saving and restoring tty states.
  43 gdb_test "shell stty intr '^C'" ".*"
  44
  45 proc all_threads_running {} {
  46     global gdb_prompt
  47     global srcfile
  48
  49     # Reset all the counters to zero.
  50     gdb_test_no_output "set var common_routine::hits=0"
  51     gdb_test_no_output "set var common_routine::from_thread1=0"
  52     gdb_test_no_output "set var common_routine::from_thread2=0"
  53     gdb_test_no_output "set var common_routine::from_main=0"
  54     gdb_test_no_output "set var common_routine::full_coverage=0"
  55
  56     # Disable all breakpoints.
  57     gdb_test_no_output "disable"
  58
  59     # Set up a breakpoint that will cause us to stop when we have
  60     # been called 15 times.  This should be plenty of time to allow
  61     # every thread to run at least once, since each thread sleeps for
  62     # one second between calls to common_routine.
  63     gdb_test "tbreak common_routine if hits >= 15" ".*"
  64
  65     # Start all the threads running again and wait for the inferior
  66     # to stop.  Since no other breakpoints are set at this time
  67     # we should stop only when we have been previously called 15 times.
  68
  69     set return_me 1
  70
  71     gdb_test_multiple "continue" "continue until common routine run 15 times" {
  72         -re "Continuing.*common_routine.*at.*$srcfile.*$gdb_prompt $" {
  73             set return_me 0
  74         }
  75     }
  76
  77     if { $return_me == 1 } then {
  78         return 0
  79     }
  80
  81     # Check that we stopped when we actually expected to stop, by
  82     # verifying that there have been 15 previous hits.
  83
  84     # NOTE: Because of synchronization behavior, it is possible for
  85     # more than one thread to increment "hits" between one breakpoint
  86     # trap and the next.  So stopping after 16 or 17 hits should be
  87     # considered acceptable.
  88
  89     gdb_test_multiple "p common_routine::hits" \
  90         "stopped before calling common_routine 15 times" {
  91             -re ".*= 15\r\n$gdb_prompt $" {
  92                 pass "stopped before calling common_routine 15 times"
  93             }
  94             -re ".*= 16\r\n$gdb_prompt $" {
  95                 pass "stopped before calling common_routine 15 times (16 times)"
  96             }
  97             -re ".*= 17\r\n$gdb_prompt $" {
  98                 pass "stopped before calling common_routine 15 times (17 times)"
  99             }
 100         }
 101
 102     # Also check that all of the threads have run, which will only be true
 103     # if the full_coverage variable is set.
 104
 105     set return_me 1
 106     gdb_test_multiple "p common_routine::full_coverage" \
 107         "some threads didn't run" {
 108             -re ".* = 1.*$gdb_prompt $" {
 109             }
 110             -re ".* = 0.*$gdb_prompt $" {
 111                 fail "some threads didn't run"
 112                 set return_me 0
 113             }
 114         }
 115
 116     # Looks fine, return success.
 117     return $return_me
 118 }
 119
 120 proc test_startup {} {
 121     global srcdir srcfile gdb_prompt expect_out
 122     global horiz
 123     global main_id thread1_id thread2_id
 124
 125     # We should be able to do an info threads before starting any others.
 126     set return_me 1
 127     gdb_test_multiple "info threads" "info threads" {
 128         -re ".*Thread.*main.*$gdb_prompt $" {
 129             pass "info threads"
 130             set return_me 0
 131         }
 132         -re "\r\n$gdb_prompt $" {
 133             unsupported "gdb does not support pthreads for this machine"
 134         }
 135     }
 136
 137     if { $return_me == 1 } then {
 138         return 0
 139     }
 140
 141     # Extract the thread id number of main thread from "info threads" output.
 142     gdb_test_multiple "info threads" "get main thread id" {
 143         -re "(\[0-9\]+)(${horiz}Thread${horiz}main.*)($gdb_prompt $)" {
 144         }
 145     }
 146
 147     set main_id $expect_out(1,string)
 148
 149     # Check that we can continue and create the first thread.
 150     gdb_test "break thread1" "Breakpoint .* file .*$srcfile.*"
 151     gdb_test "continue" \
 152             "Continuing.*Breakpoint .*, thread1 \\(arg=0xfeedface\\).*at.*$srcfile.*" \
 153             "Continue to creation of first thread"
 154     gdb_test_no_output "disable"
 155
 156     # Extract the thread id number of thread 1 from "info threads" output.
 157     gdb_test_multiple "info threads" "get thread 1 id" {
 158         -re "(\[0-9\]+)(${horiz}Thread${horiz}thread1.*)($gdb_prompt $)" {
 159         }
 160     }
 161
 162     set thread1_id $expect_out(1,string)
 163
 164     # Check that we can continue and create the second thread,
 165     # ignoring the first thread for the moment.
 166     gdb_test "break thread2" "Breakpoint .* file .*$srcfile.*"
 167     gdb_test "continue" \
 168             "Continuing.*Breakpoint .*, thread2 \\(arg=0xdeadbeef\\).*at.*$srcfile.*" \
 169             "Continue to creation of second thread"
 170
 171     # Extract the thread id number of thread 2 from "info threads" output.
 172     gdb_test_multiple "info threads" "get thread 2 id" {
 173         -re "(\[0-9\]+)(${horiz}Thread${horiz}thread2.*)($gdb_prompt $)" {
 174         }
 175     }
 176
 177     set thread2_id $expect_out(1,string)
 178
 179     return 1
 180 }
 181
 182 proc check_control_c {} {
 183     global gdb_prompt
 184
 185     # Verify that all threads are running.
 186     if [all_threads_running] then {
 187         pass "All threads running after startup"
 188     }
 189
 190     # Send a continue followed by ^C to the process to stop it.
 191     gdb_test_multiple "continue" "continue with all threads running" {
 192         -re "Continuing." {
 193             pass "Continue with all threads running"
 194         }
 195     }
 196     after 2000
 197     send_gdb "\003"
 198     set description "Stopped with a ^C"
 199     gdb_expect {
 200         -re "Program received signal SIGINT.*$gdb_prompt $" {
 201             pass $description
 202         }
 203         -re "Quit.*$gdb_prompt $" {
 204             pass $description
 205         }
 206         timeout {
 207             fail "$description (timeout)"
 208             return 1
 209         }
 210     }
 211     gdb_test "bt" ".*"
 212
 213     # Verify that all threads can be run again after a ^C stop.
 214     if [all_threads_running] then {
 215         pass "All threads running after continuing from ^C stop"
 216     }
 217     return 0
 218 }
 219
 220 proc check_backtraces {} {
 221     global gdb_prompt main_id thread1_id thread2_id
 222
 223     # Check that the "thread apply N backtrace" command works
 224
 225     gdb_test "thread apply $main_id backtrace" \
 226             ".* in main \\(argc=.*, argv=.*\\).*" \
 227             "check backtrace from main thread"
 228     gdb_test "thread apply $thread1_id backtrace" \
 229             ".* in thread1 \\(arg=0xfeedface\\).*" \
 230             "check backtrace from thread 1"
 231     gdb_test "thread apply $thread2_id backtrace" \
 232             ".* in thread2 \\(arg=0xdeadbeef\\).*" \
 233             "check backtrace from thread 2"
 234
 235     # Check that we can apply the backtrace command to all
 236     # three threads with a single gdb command
 237
 238     gdb_test "thread apply $main_id $thread1_id $thread2_id bt" \
 239             ".* in main .* in thread1 .* in thread2.*" \
 240             "apply backtrace command to all three threads"
 241
 242     # Check that we can do thread specific backtraces
 243     # This also tests that we can do thread specific breakpoints.
 244
 245     gdb_test "break common_routine thread $thread2_id" \
 246             "Breakpoint .* at 0x.* file .* line .*" \
 247             "set break at common_routine in thread 2"
 248
 249     gdb_test_multiple "continue" "continue to bkpt at common_routine in thread 2" {
 250         -re "Breakpoint .* common_routine \\(arg=2\\).*$gdb_prompt $" {
 251             pass "continue to bkpt at common_routine in thread 2"
 252             gdb_test "backtrace" \
 253                 "#0.*common_routine \\(arg=2\\).*#1.*thread2.*" \
 254                 "backtrace from thread 2 bkpt in common_routine"
 255         }
 256         -re "Breakpoint .* common_routine \\(arg=0\\).*$gdb_prompt $" {
 257             fail "continue to bkpt at common_routine in thread 2 (arg=0)"
 258         }
 259         -re "Breakpoint .* common_routine \\(arg=1\\).*$gdb_prompt $" {
 260             fail "continue to bkpt at common_routine in thread 2 (arg=1)"
 261         }
 262     }
 263 }
 264
 265 if [runto_main] then {
 266     if [test_startup] then {
 267         if [check_control_c] then {
 268             warning "Could not stop child with ^C; skipping rest of tests.\n"
 269             return
 270         }
 271         check_backtraces
 272     }
 273 }