gdb/testsuite/gdb.threads/step2.exp

   1 # step2.exp -- Expect script to test gdb step.c
   2 # Copyright (C) 1992, 1997, 2007, 2008, 2009, 2010, 2011
   3 # Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # This file was written by Jeff Law. (law@cygnus.com)
  19 #
  20
  21
  22 if $tracelevel then {
  23         strace $tracelevel
  24 }
  25
  26 set program_exited 0
  27
  28 # A simple and crude test to see that we can step two threads independently
  29 proc test_multi_threaded_stepping {} {
  30     global gdb_prompt
  31     global hex
  32     global srcfile
  33     global decimal
  34
  35     # Set breakpoints in code that we know is executed in only
  36     # thread of control.
  37     gdb_test "break thread1" \
  38              "Break.* at $hex: file .*$srcfile, line $decimal\\."
  39     gdb_test "break thread2" \
  40              "Break.* at $hex: file .*$srcfile, line $decimal\\."
  41
  42     # the order in which things happen is indeterminate.  So we basically
  43     # look for a set of events and note that each one happens and that
  44     # all of the required events have happened when we're done.
  45     #
  46     # Right now we only verify that both threads start and that they
  47     # both call pthread_cond_wait twice.
  48     set thread1started 0
  49     set thread1condwait 0
  50     set thread2started 0
  51     set thread2condwait 0
  52
  53     send_gdb "run\n"
  54     gdb_expect {
  55         -re "The program .* has been started already.*y or n. $" {
  56             send_gdb "y\n"
  57             exp_continue
  58         }
  59         -re ".*Breakpoint \[0-9\]+,.*thread1.* at .*$srcfile:.*\[\t \].*$gdb_prompt $" {
  60             if { $thread1started != 0 } then {
  61                 fail "thread1 started"
  62                 return
  63             } else {
  64                 set thread1started 1
  65                 pass "thread1 started"
  66             }
  67             send_gdb "step\n"
  68             exp_continue
  69         }
  70         -re ".*Breakpoint \[0-9\]+,.*thread2.* at .*$srcfile:.*\[\t \].*$gdb_prompt $" {
  71             if { $thread2started != 0 } then {
  72                 fail "thread2 started"
  73                 return
  74             } else {
  75                 set thread2started 1
  76                 pass "thread2 started"
  77             }
  78             send_gdb "step\n"
  79             exp_continue
  80         }
  81         -re ".*pthread_cond_wait.*cv_a.*$gdb_prompt" {
  82             if { $thread1started == 0 } then {
  83                 fail "thread1 condwait"
  84                 return
  85             }
  86             if { $thread1condwait < 2 } then {
  87                 pass "thread1 condwait"
  88                 incr thread1condwait
  89             }
  90             if { $thread2condwait == 2 } then {
  91                 pass "multi threaded stepping"
  92                 return
  93             }
  94             send_gdb "step\n"
  95             exp_continue
  96         }
  97
  98         -re ".*pthread_cond_wait.*cv_b.*$gdb_prompt" {
  99             if { $thread2started == 0 } then {
 100                 fail "thread2 condwait"
 101                 return
 102             }
 103             if { $thread2condwait < 2 } then {
 104                 pass "thread2 condwait"
 105                 incr thread2condwait
 106             }
 107             if { $thread1condwait == 2 } then {
 108                 pass "multi threaded stepping"
 109                 return
 110             }
 111             send_gdb "step\n"
 112             exp_continue
 113         }
 114
 115         -re "$gdb_prompt" {
 116             send_gdb "step\n"
 117             exp_continue
 118         }
 119         default { fail "multi threaded stepping" }
 120     }
 121 }
 122
 123 # Check to see if we have an executable to test.  If not, then either we
 124 # haven't tried to compile one, or the compilation failed for some reason.
 125 # In either case, just notify the user and skip the tests in this file.
 126
 127 set binfile "step"
 128 set srcfile "step.c"
 129
 130 if ![file exists $objdir/$subdir/$binfile] then {
 131     if $all_flag then {
 132         warning "$binfile does not exist; tests suppressed."
 133     }
 134     return
 135 }
 136
 137
 138 # Start with a fresh gdb.
 139
 140 gdb_exit
 141 gdb_start
 142 gdb_reinitialize_dir $srcdir/$subdir
 143 gdb_load $objdir/$subdir/$binfile
 144
 145 test_multi_threaded_stepping