gdb/testsuite/gdb.gdb/observer.exp

   1 #   Copyright 2003
   2 #   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 Joel Brobecker (brobecker@gnat.com), derived
  22 # from xfullpath.exp.
  23
  24 if $tracelevel then {
  25     strace $tracelevel
  26 }
  27
  28 set prms_id 0
  29 set bug_id 0
  30
  31 # are we on a target board
  32 if [is_remote target] {
  33     return
  34 }
  35
  36 proc setup_test { executable } {
  37     global gdb_prompt
  38     global timeout
  39
  40     # load yourself into the debugger
  41     # This can take a relatively long time, particularly for testing where
  42     # the executable is being accessed over a network, or where gdb does not
  43     # support partial symbols for a particular target and has to load the
  44     # entire symbol table.  Set the timeout to 10 minutes, which should be
  45     # adequate for most environments (it *has* timed out with 5 min on a
  46     # SPARCstation SLC under moderate load, so this isn't unreasonable).
  47     # After gdb is started, set the timeout to 30 seconds for the duration
  48     # of this test, and then back to the original value.
  49
  50     set oldtimeout $timeout
  51     set timeout 600
  52     verbose "Timeout is now $timeout seconds" 2
  53     if {[gdb_load $executable] <0} then {
  54         set timeout $oldtimeout
  55         verbose "Timeout is now $timeout seconds" 2
  56         return -1
  57     }
  58     set timeout $oldtimeout
  59     verbose "Timeout is now $timeout seconds" 2
  60
  61     # Set a breakpoint at main
  62     gdb_test "break captured_main" \
  63             "Breakpoint.*at.* file.*, line.*" \
  64             "breakpoint in captured_main"
  65
  66     # run yourself
  67     # It may take a very long time for the inferior gdb to start (lynx),
  68     # so we bump it back up for the duration of this command.
  69     set timeout 600
  70
  71     set description "run until breakpoint at captured_main"
  72     send_gdb "run -nw\n"
  73     gdb_expect {
  74         -re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.* at .*main.c:.*$gdb_prompt $" {
  75             pass "$description"
  76         }
  77         -re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.*$gdb_prompt $" {
  78             xfail "$description (line numbers scrambled?)"
  79         }
  80         -re "vfork: No more processes.*$gdb_prompt $" {
  81             fail "$description (out of virtual memory)"
  82             set timeout $oldtimeout
  83             verbose "Timeout is now $timeout seconds" 2
  84             return -1
  85         }
  86         -re ".*$gdb_prompt $" {
  87             fail "$description"
  88             set timeout $oldtimeout
  89             verbose "Timeout is now $timeout seconds" 2
  90             return -1
  91         }
  92         timeout {
  93             fail "$description (timeout)"
  94         }
  95     }
  96
  97     set timeout $oldtimeout
  98     verbose "Timeout is now $timeout seconds" 2
  99
 100     return 0
 101 }
 102
 103 proc attach_first_observer { } {
 104     gdb_test "set \$first_obs = observer_attach_normal_stop (&observer_test_first_notification_function)" \
 105              "" "attach first observer"
 106 }
 107
 108 proc attach_second_observer { } {
 109     gdb_test "set \$second_obs = observer_attach_normal_stop (&observer_test_second_notification_function)" \
 110              "" "attach second observer"
 111 }
 112
 113 proc attach_third_observer { } {
 114     gdb_test "set \$third_obs = observer_attach_normal_stop (&observer_test_third_notification_function)" \
 115              "" "attach third observer"
 116 }
 117
 118 proc detach_first_observer { } {
 119     gdb_test "call observer_detach_normal_stop (\$first_obs)" \
 120              "" "detach first observer"
 121 }
 122
 123 proc detach_second_observer { } {
 124     gdb_test "call observer_detach_normal_stop (\$second_obs)" \
 125              "" "detach second observer"
 126 }
 127
 128 proc detach_third_observer { } {
 129     gdb_test "call observer_detach_normal_stop (\$third_obs)" \
 130              "" "detach third observer"
 131 }
 132
 133 proc check_counters { first second third message } {
 134     gdb_test "print observer_test_first_observer" \
 135              ".\[0-9\]+ =.*$first" \
 136              "check first observer counter value ($message)"
 137     gdb_test "print observer_test_second_observer" \
 138              ".\[0-9\]+ =.*$second" \
 139              "check second observer counter value ($message)"
 140     gdb_test "print observer_test_third_observer" \
 141              ".\[0-9\]+ =.*$third" \
 142              "check third observer counter value ($message)"
 143 }
 144
 145 proc reset_counters { } {
 146     gdb_test "set variable observer_test_first_observer = 0" "" \
 147              "reset first observer counter"
 148     gdb_test "set variable observer_test_second_observer = 0" "" \
 149              "reset second observer counter"
 150     gdb_test "set variable observer_test_third_observer = 0" "" \
 151              "reset third observer counter"
 152 }
 153
 154 proc test_normal_stop_notifications { first second third message } {
 155     reset_counters
 156     # Call observer_notify_normal_stop.  Note that this procedure
 157     # takes one argument, but this argument is ignored by the observer
 158     # callbacks we have installed.  So we just pass an arbitrary value.
 159     gdb_test "call observer_notify_normal_stop (0)" "" \
 160              "sending notification ($message)"
 161     check_counters $first $second $third $message
 162 }
 163
 164 proc test_observer_normal_stop { executable } {
 165
 166     set setup_result [setup_test $executable]
 167     if {$setup_result <0} then {
 168         return -1
 169     }
 170
 171     # First, try sending a notification without any observer attached.
 172     test_normal_stop_notifications 0 0 0 "no observer"
 173
 174     # Now, attach one observer, and send a notification.
 175     attach_second_observer
 176     test_normal_stop_notifications 0 1 0 "one observer"
 177
 178     # Remove the observer, and send a notification.
 179     detach_second_observer
 180     test_normal_stop_notifications 0 0 0 "no observer"
 181
 182     # With a new observer.
 183     attach_first_observer
 184     test_normal_stop_notifications 1 0 0 "a new observer"
 185
 186     # With 2 observers.
 187     attach_second_observer
 188     test_normal_stop_notifications 1 1 0 "2 observers"
 189
 190     # With 3 observers.
 191     attach_third_observer
 192     test_normal_stop_notifications 1 1 1 "3 observers"
 193
 194     # Remove middle observer.
 195     detach_second_observer
 196     test_normal_stop_notifications 1 0 1 "middle observer removed"
 197
 198     # Remove first observer.
 199     detach_first_observer
 200     test_normal_stop_notifications 0 0 1 "first observer removed"
 201
 202     # Remove last observer.
 203     detach_third_observer
 204     test_normal_stop_notifications 0 0 0 "last observer removed"
 205
 206     # Go back to 3 observers, and remove them in a different order...
 207     attach_first_observer
 208     attach_second_observer
 209     attach_third_observer
 210     test_normal_stop_notifications 1 1 1 "3 observers again"
 211
 212     # Remove the third observer.
 213     detach_third_observer
 214     test_normal_stop_notifications 1 1 0 "third observer removed"
 215
 216     # Remove the second observer.
 217     detach_second_observer
 218     test_normal_stop_notifications 1 0 0 "second observer removed"
 219
 220     # Remove the first observer, no more observers.
 221     detach_first_observer
 222     test_normal_stop_notifications 0 0 0 "last observer removed"
 223
 224     return 0
 225 }
 226
 227 # Find a pathname to a file that we would execute if the shell was asked
 228 # to run $arg using the current PATH.
 229
 230 proc find_gdb { arg } {
 231
 232     # If the arg directly specifies an existing executable file, then
 233     # simply use it.
 234
 235     if [file executable $arg] then {
 236         return $arg
 237     }
 238
 239     set result [which $arg]
 240     if [string match "/" [ string range $result 0 0 ]] then {
 241         return $result
 242     }
 243
 244     # If everything fails, just return the unqualified pathname as default
 245     # and hope for best.
 246
 247     return $arg
 248 }
 249
 250 # Run the test with self.
 251 # Copy the file executable file in case this OS doesn't like to edit its own
 252 # text space.
 253
 254 set GDB_FULLPATH [find_gdb $GDB]
 255
 256 # Remove any old copy lying around.
 257 remote_file host delete x$tool
 258
 259 gdb_start
 260 set file [remote_download host $GDB_FULLPATH x$tool]
 261 set result [test_observer_normal_stop $file];
 262 gdb_exit;
 263 catch "remote_file host delete $file";
 264
 265 if {$result <0} then {
 266     warning "Couldn't test self"
 267     return -1
 268 }