gdb/testsuite/gdb.threads/pthreads.exp

   1 # Copyright (C) 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008,
   2 # 2009, 2010, 2011 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 # This file was written by Fred Fish. (fnf@cygnus.com)
  18
  19 if $tracelevel then {
  20         strace $tracelevel
  21 }
  22
  23
  24 # This only works with native configurations
  25 if ![isnative] then {
  26     return
  27 }
  28
  29 set testfile "pthreads"
  30 set srcfile ${testfile}.c
  31 set binfile ${objdir}/${subdir}/${testfile}
  32
  33 # regexp for "horizontal" text (i.e. doesn't include newline or
  34 # carriage return)
  35 set horiz "\[^\n\r\]*"
  36
  37 if [istarget "*-*-linux"] then {
  38     set target_cflags "-D_MIT_POSIX_THREADS"
  39 } else {
  40     set target_cflags ""
  41 }
  42
  43 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
  44     return -1
  45 }
  46
  47
  48 # Start with a fresh gdb.
  49
  50 gdb_exit
  51 gdb_start
  52 gdb_reinitialize_dir $srcdir/$subdir
  53 gdb_load ${binfile}
  54
  55 gdb_test_no_output "set print sevenbit-strings"
  56 #gdb_test_no_output "set print address off"
  57 gdb_test_no_output "set width 0"
  58
  59 # We'll need this when we send_gdb a ^C to GDB.  Need to do it before we
  60 # run the program and gdb starts saving and restoring tty states.
  61 # On Ultrix, we don't need it and it is really slow (because shell_escape
  62 # doesn't use vfork).
  63 if ![istarget "*-*-ultrix*"] then {
  64     gdb_test "shell stty intr '^C'" ".*"
  65 }
  66
  67 proc all_threads_running {} {
  68     global gdb_prompt
  69     global srcfile
  70
  71     # Reset all the counters to zero.
  72     gdb_test_no_output "set var common_routine::hits=0"
  73     gdb_test_no_output "set var common_routine::from_thread1=0"
  74     gdb_test_no_output "set var common_routine::from_thread2=0"
  75     gdb_test_no_output "set var common_routine::from_main=0"
  76     gdb_test_no_output "set var common_routine::full_coverage=0"
  77
  78     # Disable all breakpoints.
  79     gdb_test_no_output "disable"
  80
  81     # Set up a breakpoint that will cause us to stop when we have
  82     # been called 15 times.  This should be plenty of time to allow
  83     # every thread to run at least once, since each thread sleeps for
  84     # one second between calls to common_routine.
  85     gdb_test "tbreak common_routine if hits >= 15" ".*"
  86
  87     # Start all the threads running again and wait for the inferior
  88     # to stop.  Since no other breakpoints are set at this time
  89     # we should stop only when we have been previously called 15 times.
  90
  91     set return_me 1
  92
  93     gdb_test_multiple "continue" "continue until common routine run 15 times" {
  94         -re "Continuing.*common_routine.*at.*$srcfile.*$gdb_prompt $" {
  95             set return_me 0
  96         }
  97     }
  98
  99     if { $return_me == 1 } then {
 100         return 0;
 101     }
 102
 103     # Check that we stopped when we actually expected to stop, by
 104     # verifying that there have been 15 previous hits.
 105
 106     # NOTE: Because of synchronization behavior, it is possible for
 107     # more than one thread to increment "hits" between one breakpoint
 108     # trap and the next.  So stopping after 16 or 17 hits should be
 109     # considered acceptable.
 110
 111     gdb_test_multiple "p common_routine::hits" \
 112         "stopped before calling common_routine 15 times" {
 113             -re ".*= 15\r\n$gdb_prompt $" {
 114                 pass "stopped before calling common_routine 15 times"
 115             }
 116             -re ".*= 16\r\n$gdb_prompt $" {
 117                 pass "stopped before calling common_routine 15 times (16 times)"
 118             }
 119             -re ".*= 17\r\n$gdb_prompt $" {
 120                 pass "stopped before calling common_routine 15 times (17 times)"
 121             }
 122         }
 123
 124     # Also check that all of the threads have run, which will only be true
 125     # if the full_coverage variable is set.
 126
 127     set return_me 1
 128     gdb_test_multiple "p common_routine::full_coverage" \
 129         "some threads didn't run" {
 130             -re ".* = 1.*$gdb_prompt $" {
 131             }
 132             -re ".* = 0.*$gdb_prompt $" {
 133                 fail "some threads didn't run"
 134                 set return_me 0
 135             }
 136         }
 137
 138     # Looks fine, return success.
 139     return $return_me
 140 }
 141
 142 proc test_startup {} {
 143     global srcdir srcfile gdb_prompt expect_out
 144     global horiz
 145     global main_id thread1_id thread2_id
 146
 147     # We should be able to do an info threads before starting any others.
 148     set return_me 1
 149     gdb_test_multiple "info threads" "info threads" {
 150         -re ".*Thread.*main.*$gdb_prompt $" {
 151             pass "info threads"
 152             set return_me 0
 153         }
 154         -re "\r\n$gdb_prompt $" {
 155             unsupported "gdb does not support pthreads for this machine"
 156         }
 157     }
 158
 159     if { $return_me == 1 } then {
 160         return 0;
 161     }
 162
 163     # Extract the thread id number of main thread from "info threads" output.
 164     gdb_test_multiple "info threads" "get main thread id" {
 165         -re "(\[0-9\]+)(${horiz}Thread${horiz}main.*)($gdb_prompt $)" {
 166         }
 167     }
 168
 169     set main_id $expect_out(1,string)
 170
 171     # Check that we can continue and create the first thread.
 172     gdb_test "break thread1" "Breakpoint .* file .*$srcfile.*"
 173     gdb_test "continue" \
 174             "Continuing.*Breakpoint .*, thread1 \\(arg=0xfeedface\\).*at.*$srcfile.*" \
 175             "Continue to creation of first thread"
 176     gdb_test_no_output "disable"
 177
 178     # Extract the thread id number of thread 1 from "info threads" output.
 179     gdb_test_multiple "info threads" "get thread 1 id" {
 180         -re "(\[0-9\]+)(${horiz}Thread${horiz}thread1.*)($gdb_prompt $)" {
 181         }
 182     }
 183
 184     set thread1_id $expect_out(1,string)
 185
 186     # Check that we can continue and create the second thread,
 187     # ignoring the first thread for the moment.
 188     gdb_test "break thread2" "Breakpoint .* file .*$srcfile.*"
 189     gdb_test "continue" \
 190             "Continuing.*Breakpoint .*, thread2 \\(arg=0xdeadbeef\\).*at.*$srcfile.*" \
 191             "Continue to creation of second thread"
 192
 193     # Extract the thread id number of thread 2 from "info threads" output.
 194     gdb_test_multiple "info threads" "get thread 2 id" {
 195         -re "(\[0-9\]+)(${horiz}Thread${horiz}thread2.*)($gdb_prompt $)" {
 196         }
 197     }
 198
 199     set thread2_id $expect_out(1,string)
 200
 201     return 1
 202 }
 203
 204 proc check_control_c {} {
 205     global gdb_prompt
 206
 207     # Verify that all threads are running.
 208     if [all_threads_running] then {
 209         pass "All threads running after startup"
 210     }
 211
 212     # Send a continue followed by ^C to the process to stop it.
 213     gdb_test_multiple "continue" "continue with all threads running" {
 214         -re "Continuing." {
 215             pass "Continue with all threads running"
 216         }
 217     }
 218     after 2000
 219     send_gdb "\003"
 220     set description "Stopped with a ^C"
 221     gdb_expect {
 222         -re "Program received signal SIGINT.*$gdb_prompt $" {
 223             pass $description
 224         }
 225         -re "Quit.*$gdb_prompt $" {
 226             pass $description
 227         }
 228         timeout {
 229             fail "$description (timeout)"
 230             return 1;
 231         }
 232     }
 233     gdb_test "bt" ".*"
 234
 235     # Verify that all threads can be run again after a ^C stop.
 236     if [all_threads_running] then {
 237         pass "All threads running after continuing from ^C stop"
 238     }
 239     return 0;
 240 }
 241
 242 proc check_backtraces {} {
 243     global gdb_prompt main_id thread1_id thread2_id
 244
 245     # Check that the "thread apply N backtrace" command works
 246
 247     gdb_test "thread apply $main_id backtrace" \
 248             ".* in main \\(argc=.*, argv=.*\\).*" \
 249             "check backtrace from main thread"
 250     gdb_test "thread apply $thread1_id backtrace" \
 251             ".* in thread1 \\(arg=0xfeedface\\).*" \
 252             "check backtrace from thread 1"
 253     gdb_test "thread apply $thread2_id backtrace" \
 254             ".* in thread2 \\(arg=0xdeadbeef\\).*" \
 255             "check backtrace from thread 2"
 256
 257     # Check that we can apply the backtrace command to all
 258     # three threads with a single gdb command
 259
 260     gdb_test "thread apply $main_id $thread1_id $thread2_id bt" \
 261             ".* in main .* in thread1 .* in thread2.*" \
 262             "apply backtrace command to all three threads"
 263
 264     # Check that we can do thread specific backtraces
 265     # This also tests that we can do thread specific breakpoints.
 266
 267     gdb_test "break common_routine thread $thread2_id" \
 268             "Breakpoint .* at 0x.* file .* line .*" \
 269             "set break at common_routine in thread 2"
 270
 271     gdb_test_multiple "continue" "continue to bkpt at common_routine in thread 2" {
 272         -re "Breakpoint .* common_routine \\(arg=2\\).*$gdb_prompt $" {
 273             pass "continue to bkpt at common_routine in thread 2"
 274             gdb_test "backtrace" \
 275                 "#0.*common_routine \\(arg=2\\).*#1.*thread2.*" \
 276                 "backtrace from thread 2 bkpt in common_routine"
 277         }
 278         -re "Breakpoint .* common_routine \\(arg=0\\).*$gdb_prompt $" {
 279             fail "continue to bkpt at common_routine in thread 2 (arg=0)"
 280         }
 281         -re "Breakpoint .* common_routine \\(arg=1\\).*$gdb_prompt $" {
 282             fail "continue to bkpt at common_routine in thread 2 (arg=1)"
 283         }
 284     }
 285 }
 286
 287 setup_xfail "alpha-*-osf*"
 288 if [runto_main] then {
 289     clear_xfail "alpha-*-osf*"
 290     if [test_startup] then {
 291         if [check_control_c] then {
 292             warning "Could not stop child with ^C; skipping rest of tests.\n"
 293             return;
 294         }
 295         check_backtraces
 296     }
 297 }
 298 clear_xfail "alpha-*-osf*"