gdb/testsuite/gdb.threads/step2.exp

   1 # step2.exp -- Expect script to test gdb step.c
   2 # Copyright (C) 1992, 1997 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 2 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, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 # Please email any bugs, comments, and/or additions to this file to:
  19 # bug-gdb@prep.ai.mit.edu
  20
  21 # This file was written by Jeff Law. (law@cygnus.com)
  22 #
  23
  24
  25 if $tracelevel then {
  26         strace $tracelevel
  27 }
  28
  29 set program_exited 0
  30
  31 # A simple and crude test to see that we can step two threads independently
  32 proc test_multi_threaded_stepping {} {
  33     global gdb_prompt
  34     global hex
  35     global srcfile
  36     global decimal
  37
  38     # Set breakpoints in code that we know is executed in only
  39     # thread of control.
  40     gdb_test "break thread1" \
  41              "Break.* at $hex: file .*$srcfile, line $decimal\\."
  42     gdb_test "break thread2" \
  43              "Break.* at $hex: file .*$srcfile, line $decimal\\."
  44
  45     # the order in which things happen is indeterminate.  So we basically
  46     # look for a set of events and note that each one happens and that
  47     # all of the required events have happened when we're done.
  48     #
  49     # Right now we only verify that both threads start and that they
  50     # both call pthread_cond_wait twice.
  51     set thread1started 0
  52     set thread1condwait 0
  53     set thread2started 0
  54     set thread2condwait 0
  55
  56     send_gdb "run\n"
  57     gdb_expect {
  58         -re "The program .* has been started already.*y or n. $" {
  59             send_gdb "y\n"
  60             exp_continue
  61         }
  62         -re ".*Breakpoint \[0-9\]+,.*thread1.* at .*$srcfile:.*\[\t \].*$gdb_prompt $" {
  63             if { $thread1started != 0 } then {
  64                 fail "thread1 started"
  65                 return
  66             } else {
  67                 set thread1started 1
  68                 pass "thread1 started"
  69             }
  70             send_gdb "step\n"
  71             exp_continue
  72         }
  73         -re ".*Breakpoint \[0-9\]+,.*thread2.* at .*$srcfile:.*\[\t \].*$gdb_prompt $" {
  74             if { $thread2started != 0 } then {
  75                 fail "thread2 started"
  76                 return
  77             } else {
  78                 set thread2started 1
  79                 pass "thread2 started"
  80             }
  81             send_gdb "step\n"
  82             exp_continue
  83         }
  84         -re ".*pthread_cond_wait.*cv_a.*$gdb_prompt" {
  85             if { $thread1started == 0 } then {
  86                 fail "thread1 condwait"
  87                 return
  88             }
  89             if { $thread1condwait < 2 } then {
  90                 pass "thread1 condwait"
  91                 incr thread1condwait
  92             }
  93             if { $thread2condwait == 2 } then {
  94                 pass "multi threaded stepping"
  95                 return
  96             }
  97             send_gdb "step\n"
  98             exp_continue
  99         }
 100
 101         -re ".*pthread_cond_wait.*cv_b.*$gdb_prompt" {
 102             if { $thread2started == 0 } then {
 103                 fail "thread2 condwait"
 104                 return
 105             }
 106             if { $thread2condwait < 2 } then {
 107                 pass "thread2 condwait"
 108                 incr thread2condwait
 109             }
 110             if { $thread1condwait == 2 } then {
 111                 pass "multi threaded stepping"
 112                 return
 113             }
 114             send_gdb "step\n"
 115             exp_continue
 116         }
 117
 118         -re "$gdb_prompt" {
 119             send_gdb "step\n"
 120             exp_continue
 121         }
 122         default { fail "multi threaded stepping" }
 123     }
 124 }
 125
 126 # Check to see if we have an executable to test.  If not, then either we
 127 # haven't tried to compile one, or the compilation failed for some reason.
 128 # In either case, just notify the user and skip the tests in this file.
 129
 130 set binfile "step"
 131 set srcfile "step.c"
 132
 133 if ![file exists $objdir/$subdir/$binfile] then {
 134     if $all_flag then {
 135         warning "$binfile does not exist; tests suppressed."
 136     }
 137     return
 138 }
 139
 140 set prms_id 0
 141 set bug_id 0
 142
 143 # Start with a fresh gdb.
 144
 145 gdb_exit
 146 gdb_start
 147 gdb_reinitialize_dir $srcdir/$subdir
 148 gdb_load $objdir/$subdir/$binfile
 149
 150 test_multi_threaded_stepping