gdb/testsuite/gdb.threads/pthreads.exp

   1 # Copyright (C) 1996, 1997 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  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 Fred Fish. (fnf@cygnus.com)
  21
  22 if $tracelevel then {
  23         strace $tracelevel
  24 }
  25
  26 set prms_id 0
  27 set bug_id 0
  28
  29 # This only works with native configurations
  30 if ![isnative] then {
  31     return
  32 }
  33
  34 set testfile "pthreads"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37
  38 # regexp for "horizontal" text (i.e. doesn't include newline or
  39 # carriage return)
  40 set horiz "\[^\n\r\]*"
  41
  42 set built_binfile 0
  43 if [istarget "*-*-linux"] then {
  44     set target_cflags "-D_MIT_POSIX_THREADS"
  45 } else {
  46     set target_cflags ""
  47 }
  48 set why_msg "unrecognized error"
  49 foreach lib {-lpthreads -lpthread -lthread} {
  50     set options "debug"
  51     lappend options "incdir=${objdir}/${subdir}"
  52     lappend options "libs=$lib"
  53     set ccout [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable $options]
  54     switch -regexp -- $ccout {
  55         ".*no posix threads support.*" {
  56             set why_msg "missing threads include file"
  57             break
  58         }
  59         ".*cannot open -lpthread.*" {
  60             set why_msg "missing runtime threads library"
  61         }
  62         ".*Can't find library for -lpthread.*" {
  63             set why_msg "missing runtime threads library"
  64         }
  65         {^$} {
  66             pass "successfully compiled posix threads test case"
  67             set built_binfile 1
  68             break
  69         }
  70     }
  71 }
  72 if {$built_binfile == "0"} {
  73     unsupported "Couldn't compile ${srcfile}, ${why_msg}"
  74     return -1
  75 }
  76
  77 # Now we can proceed with the real testing.
  78
  79 # Start with a fresh gdb.
  80
  81 gdb_exit
  82 gdb_start
  83 gdb_reinitialize_dir $srcdir/$subdir
  84 gdb_load ${binfile}
  85
  86 gdb_test "set print sevenbit-strings" ""
  87 #gdb_test "set print address off" ""
  88 gdb_test "set width 0" ""
  89
  90 # We'll need this when we send_gdb a ^C to GDB.  Need to do it before we
  91 # run the program and gdb starts saving and restoring tty states.
  92 # On Ultrix, we don't need it and it is really slow (because shell_escape
  93 # doesn't use vfork).
  94 if ![istarget "*-*-ultrix*"] then {
  95     gdb_test "shell stty intr '^C'" ""
  96 }
  97
  98 proc all_threads_running {} {
  99     global gdb_prompt
 100     global srcfile
 101
 102     # Reset all the counters to zero.
 103     gdb_test "set var common_routine::hits=0" ""
 104     gdb_test "set var common_routine::from_thread1=0" ""
 105     gdb_test "set var common_routine::from_thread2=0" ""
 106     gdb_test "set var common_routine::from_main=0" ""
 107     gdb_test "set var common_routine::full_coverage=0" ""
 108
 109     # Disable all breakpoints.
 110     gdb_test "disable" ""
 111
 112     # Set up a breakpoint that will cause us to stop when we have
 113     # been called 15 times.  This should be plenty of time to allow
 114     # every thread to run at least once, since each thread sleeps for
 115     # one second between calls to common_routine.
 116     gdb_test "tbreak common_routine if hits >= 15" ""
 117
 118     # Start all the threads running again and wait for the inferior
 119     # to stop.  Since no other breakpoints are set at this time
 120     # we should stop only when we have been previously called 15 times.
 121
 122     send_gdb "continue\n"
 123     gdb_expect {
 124         -re "Continuing.*common_routine.*at.*$srcfile.*$gdb_prompt $" {}
 125         default {
 126             fail "continue until common routine run 15 times"
 127             return 0
 128         }
 129         timeout {
 130             fail "continue until common routine run 15 times (timeout)"
 131             return 0
 132         }
 133     }
 134
 135     # Check that we stopped when we actually expected to stop, by
 136     # verifying that there have been 15 previous hits.
 137
 138     # NOTE: Because of synchronization behavior, it is possible for
 139     # more than one thread to increment "hits" between one breakpoint
 140     # trap and the next.  So stopping after 16 or 17 hits should be
 141     # considered acceptable.
 142
 143     send_gdb "p common_routine::hits\n"
 144     gdb_expect {
 145         -re ".*= 15\r\n$gdb_prompt $" {}
 146         -re ".*= 16\r\n$gdb_prompt $" {}
 147         -re ".*= 17\r\n$gdb_prompt $" {}
 148         default {
 149             fail "stopped before calling common_routine 15 times"
 150             return 0
 151         }
 152         -re ".*$gdb_prompt $" {
 153             fail "stopped before calling common_routine 15 times"
 154             return 0
 155         }
 156         timeout {
 157             fail "stopped before calling common_routine 15 times (timeout)"
 158             return 0
 159         }
 160     }
 161
 162     # Also check that all of the threads have run, which will only be true
 163     # if the full_coverage variable is set.
 164
 165     send_gdb "p common_routine::full_coverage\n"
 166     gdb_expect {
 167         -re ".*= 1\r\n$gdb_prompt $" {}
 168         default {
 169             fail "some threads didn't run"
 170             return 0
 171         }
 172         timeout {
 173             fail "some threads didn't run (timeout)"
 174             return 0
 175         }
 176     }
 177
 178     # Looks fine, return success.
 179     return 1
 180 }
 181
 182 proc test_startup {} {
 183     global srcdir srcfile gdb_prompt expect_out
 184     global horiz
 185     global main_id thread1_id thread2_id
 186
 187     # We should be able to do an info threads before starting any others.
 188     send_gdb "info threads\n"
 189     gdb_expect {
 190         -re ".*Thread.*LWP.*main.*$gdb_prompt $" {
 191             pass "info threads"
 192         }
 193         -re "\r\n$gdb_prompt $" {
 194             pass "info threads"
 195             setup_xfail "*-*-*"
 196             fail "gdb does not support pthreads for this machine"
 197             return 0
 198         }
 199     }
 200
 201     # Extract the thread id number of main thread from "info threads" output.
 202     send_gdb "info threads\n"
 203     gdb_expect -re "(\[0-9\]+)(${horiz}Thread${horiz}main.*)($gdb_prompt $)"
 204     set main_id $expect_out(1,string)
 205
 206     # Check that we can continue and create the first thread.
 207     gdb_test "break thread1" "Breakpoint .* file .*$srcdir.*"
 208     gdb_test "continue" \
 209             "Continuing.*Breakpoint .*, thread1 \\(arg=0xfeedface\\).*at.*$srcfile.*" \
 210             "Continue to creation of first thread"
 211     gdb_test "disable" ""
 212
 213     # Extract the thread id number of thread 1 from "info threads" output.
 214     send_gdb "info threads\n"
 215     gdb_expect -re "(\[0-9\]+)(${horiz}Thread${horiz}thread1.*)($gdb_prompt $)"
 216     set thread1_id $expect_out(1,string)
 217
 218     # Check that we can continue and create the second thread,
 219     # ignoring the first thread for the moment.
 220     gdb_test "break thread2" "Breakpoint .* file .*$srcdir.*"
 221     gdb_test "continue" \
 222             "Continuing.*Breakpoint .*, thread2 \\(arg=0xdeadbeef\\).*at.*$srcfile.*" \
 223             "Continue to creation of second thread"
 224
 225     # Extract the thread id number of thread 2 from "info threads" output.
 226     send_gdb "info threads\n"
 227     gdb_expect -re "(\[0-9\]+)(${horiz}Thread${horiz}thread2.*)($gdb_prompt $)"
 228     set thread2_id $expect_out(1,string)
 229
 230     return 1
 231 }
 232
 233 proc check_control_c {} {
 234     global gdb_prompt
 235
 236     # Verify that all threads are running.
 237     if [all_threads_running] then {
 238         pass "All threads running after startup"
 239     }
 240
 241     # Send a continue followed by ^C to the process to stop it.
 242     send_gdb "continue\n"
 243     set description "Stopped with a ^C"
 244     after 1000 [send_gdb "\003"]
 245     gdb_expect {
 246         -re "Program received signal SIGINT.*$gdb_prompt $" {
 247             pass $description
 248         }
 249         -re "Quit.*$gdb_prompt $" {
 250             pass $description
 251         }
 252         timeout {
 253             fail "$description (timeout)"
 254         }
 255     }
 256     gdb_test "bt" ""
 257
 258     # Verify that all threads can be run again after a ^C stop.
 259     if [all_threads_running] then {
 260         pass "All threads running after continuing from ^C stop"
 261     }
 262 }
 263
 264 proc check_backtraces {} {
 265     global gdb_prompt main_id thread1_id thread2_id
 266
 267     # Check that the "thread apply N backtrace" command works
 268
 269     gdb_test "thread apply $main_id backtrace" \
 270             ".* in main \\(argc=.*, argv=.*\\).*" \
 271             "check backtrace from main thread"
 272     gdb_test "thread apply $thread1_id backtrace" \
 273             ".* in thread1 \\(arg=0xfeedface\\).*" \
 274             "check backtrace from thread 1"
 275     gdb_test "thread apply $thread2_id backtrace" \
 276             ".* in thread2 \\(arg=0xdeadbeef\\).*" \
 277             "check backtrace from thread 2"
 278
 279     # Check that we can apply the backtrace command to all
 280     # three threads with a single gdb command
 281
 282     gdb_test "thread apply $main_id $thread1_id $thread2_id bt" \
 283             ".* in main .* in thread1 .* in thread2.*" \
 284             "apply backtrace command to all three threads"
 285
 286     # Check that we can do thread specific backtraces
 287     # This also tests that we can do thread specific breakpoints.
 288
 289     gdb_test "break common_routine thread $thread2_id" \
 290             "Breakpoint .* at 0x.* file .* line .*" \
 291             "set break at common_routine in thread 2"
 292
 293     send_gdb "continue\n"
 294     gdb_expect {
 295         -re "Breakpoint .* common_routine \\(arg=2\\).*" {
 296             send_gdb "backtrace\n"
 297             gdb_expect {
 298                 -re "#0.*common_routine \\(arg=2\\).*#1.*thread2.*" {
 299                     pass "backtrace from thread 2 bkpt in common_routine"
 300                 }
 301                 default {
 302                     fail "backtrace from thread 2 bkpt in common_routine"
 303                 }
 304                 timeout {
 305                     fail "backtrace from thread 2 bkpt in common_routine (timeout)"
 306                 }
 307             }
 308         }
 309         -re "Breakpoint .* common_routine \\(arg=0\\).*" {
 310             fail "stopped in main thread at breakpoint for thread 2"
 311         }
 312         -re "Breakpoint .* common_routine \\(arg=1\\).*" {
 313             fail "stopped in main thread at breakpoint for thread 1"
 314         }
 315         -re ".*$gdb_prompt" {
 316             fail "continue to bkpt at common_routine in thread 2"
 317         }
 318         default {
 319             fail "continue to bkpt at common_routine in thread 2"
 320         }
 321         timeout {
 322             fail "continue to bkpt at common_routine in thread 2 (timeout)"
 323         }
 324     }
 325 }
 326
 327 setup_xfail "alpha-*-osf*"
 328 if [runto_main] then {
 329     clear_xfail "alpha-*-osf*"
 330     if [test_startup] then {
 331         check_control_c
 332         check_backtraces
 333     }
 334 }
 335 clear_xfail "alpha-*-osf*"