gdb/testsuite/gdb.gdb/observer.exp

   1 # Copyright 2003-2013 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 3 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, see <http://www.gnu.org/licenses/>.
  15
  16 # This file was written by Joel Brobecker (brobecker@gnat.com), derived
  17 # from xfullpath.exp.
  18
  19
  20 # are we on a target board
  21 if { [is_remote target] || ![isnative] } then {
  22     return
  23 }
  24
  25 proc setup_test { executable } {
  26     global gdb_prompt
  27     global timeout
  28     global INTERNAL_GDBFLAGS
  29
  30     # load yourself into the debugger
  31     # This can take a relatively long time, particularly for testing where
  32     # the executable is being accessed over a network, or where gdb does not
  33     # support partial symbols for a particular target and has to load the
  34     # entire symbol table.  Set the timeout to 10 minutes, which should be
  35     # adequate for most environments (it *has* timed out with 5 min on a
  36     # SPARCstation SLC under moderate load, so this isn't unreasonable).
  37     # After gdb is started, set the timeout to 30 seconds for the duration
  38     # of this test, and then back to the original value.
  39
  40     set oldtimeout $timeout
  41     set timeout 600
  42     verbose "Timeout is now $timeout seconds" 2
  43
  44     global gdb_file_cmd_debug_info
  45     set gdb_file_cmd_debug_info "unset"
  46
  47     set result [gdb_load $executable]
  48     set timeout $oldtimeout
  49     verbose "Timeout is now $timeout seconds" 2
  50
  51     if { $result != 0 } then {
  52         return -1
  53     }
  54
  55     if { $gdb_file_cmd_debug_info != "debug" } then {
  56         untested "No debug information, skipping testcase."
  57         return -1
  58     }
  59
  60     # Set a breakpoint at main
  61     gdb_test "break captured_main" \
  62             "Breakpoint.*at.* file.*, line.*" \
  63             "breakpoint in captured_main"
  64
  65     # run yourself
  66     # It may take a very long time for the inferior gdb to start (lynx),
  67     # so we bump it back up for the duration of this command.
  68     set timeout 600
  69
  70     set description "run until breakpoint at captured_main"
  71     gdb_test_multiple "run $INTERNAL_GDBFLAGS" "$description" {
  72         -re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.* at .*main.c:.*$gdb_prompt $" {
  73             pass "$description"
  74         }
  75         -re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.*$gdb_prompt $" {
  76             xfail "$description (line numbers scrambled?)"
  77         }
  78         -re "vfork: No more processes.*$gdb_prompt $" {
  79             fail "$description (out of virtual memory)"
  80             set timeout $oldtimeout
  81             verbose "Timeout is now $timeout seconds" 2
  82             return -1
  83         }
  84         -re ".*$gdb_prompt $" {
  85             fail "$description"
  86             set timeout $oldtimeout
  87             verbose "Timeout is now $timeout seconds" 2
  88             return -1
  89         }
  90     }
  91
  92     set timeout $oldtimeout
  93     verbose "Timeout is now $timeout seconds" 2
  94
  95     return 0
  96 }
  97
  98 proc attach_first_observer { message } {
  99     gdb_test_no_output "set \$first_obs = observer_attach_test_notification (&observer_test_first_notification_function)" \
 100         "$message; attach first observer"
 101 }
 102
 103 proc attach_second_observer { message } {
 104     gdb_test_no_output "set \$second_obs = observer_attach_test_notification (&observer_test_second_notification_function)" \
 105         "$message; attach second observer"
 106 }
 107
 108 proc attach_third_observer { message } {
 109     gdb_test_no_output "set \$third_obs = observer_attach_test_notification (&observer_test_third_notification_function)" \
 110         "$message; attach third observer"
 111 }
 112
 113 proc detach_first_observer { message } {
 114     gdb_test_no_output "call observer_detach_test_notification (\$first_obs)" \
 115         "$message; detach first observer"
 116 }
 117
 118 proc detach_second_observer { message } {
 119     gdb_test_no_output "call observer_detach_test_notification (\$second_obs)" \
 120         "$message; detach second observer"
 121 }
 122
 123 proc detach_third_observer { message } {
 124     gdb_test_no_output "call observer_detach_test_notification (\$third_obs)" \
 125         "$message; detach third observer"
 126 }
 127
 128 proc check_counters { first second third message } {
 129     gdb_test "print observer_test_first_observer" \
 130         ".\[0-9\]+ =.*$first" \
 131         "$message; check first observer counter value"
 132     gdb_test "print observer_test_second_observer" \
 133         ".\[0-9\]+ =.*$second" \
 134         "$message; check second observer counter value"
 135     gdb_test "print observer_test_third_observer" \
 136         ".\[0-9\]+ =.*$third" \
 137         "$message; check third observer counter value"
 138 }
 139
 140 proc reset_counters { message } {
 141     gdb_test_no_output "set variable observer_test_first_observer = 0" \
 142         "$message; reset first observer counter"
 143     gdb_test_no_output "set variable observer_test_second_observer = 0" \
 144         "$message; reset second observer counter"
 145     gdb_test_no_output "set variable observer_test_third_observer = 0" \
 146         "$message; reset third observer counter"
 147 }
 148
 149 proc test_notifications { first second third message args } {
 150     # Do any initialization
 151     for {set i 0} {$i < [llength $args]} {incr i} {
 152         [lindex $args $i] $message
 153     }
 154     reset_counters $message
 155     # Call observer_notify_test_notification.  Note that this procedure
 156     # takes one argument, but this argument is ignored by the observer
 157     # callbacks we have installed.  So we just pass an arbitrary value.
 158     gdb_test_no_output "call observer_notify_test_notification (0)" \
 159         "$message; sending notification"
 160     check_counters $first $second $third $message
 161 }
 162
 163 proc test_observer { executable } {
 164
 165     set setup_result [setup_test $executable]
 166     if {$setup_result <0} then {
 167         return -1
 168     }
 169
 170     # First, try sending a notification without any observer attached.
 171     test_notifications 0 0 0 "no observer attached"
 172
 173     # Now, attach one observer, and send a notification.
 174     test_notifications 0 1 0 "second observer attached" \
 175         attach_second_observer
 176
 177     # Remove the observer, and send a notification.
 178     test_notifications 0 0 0 "second observer detached" \
 179         detach_second_observer
 180
 181     # With a new observer.
 182     test_notifications 1 0 0 "1st observer added" \
 183         attach_first_observer
 184
 185     # With 2 observers.
 186     test_notifications 1 1 0 "2nd observer added" \
 187         attach_second_observer
 188
 189     # With 3 observers.
 190     test_notifications 1 1 1 "3rd observer added" \
 191         attach_third_observer
 192
 193     # Remove middle observer.
 194     test_notifications 1 0 1 "2nd observer removed" \
 195         detach_second_observer
 196
 197     # Remove first observer.
 198     test_notifications 0 0 1 "1st observer removed" \
 199         detach_first_observer
 200
 201     # Remove last observer.
 202     test_notifications 0 0 0 "3rd observer removed" \
 203         detach_third_observer
 204
 205     # Go back to 3 observers, and remove them in a different order...
 206     test_notifications 1 1 1 "three observers added" \
 207         attach_first_observer \
 208         attach_second_observer \
 209         attach_third_observer
 210
 211     # Remove the third observer.
 212     test_notifications 1 1 0 "third observer removed" \
 213         detach_third_observer
 214
 215     # Remove the second observer.
 216     test_notifications 1 0 0 "second observer removed" \
 217         detach_second_observer
 218
 219     # Remove the first observer, no more observers.
 220     test_notifications 0 0 0 "first observer removed" \
 221         detach_first_observer
 222
 223     return 0
 224 }
 225
 226 # Find a pathname to a file that we would execute if the shell was asked
 227 # to run $arg using the current PATH.
 228
 229 proc find_gdb { arg } {
 230
 231     # If the arg directly specifies an existing executable file, then
 232     # simply use it.
 233
 234     if [file executable $arg] then {
 235         return $arg
 236     }
 237
 238     set result [which $arg]
 239     if [string match "/" [ string range $result 0 0 ]] then {
 240         return $result
 241     }
 242
 243     # If everything fails, just return the unqualified pathname as default
 244     # and hope for best.
 245
 246     return $arg
 247 }
 248
 249 # Run the test with self.
 250 # Copy the file executable file in case this OS doesn't like to edit its own
 251 # text space.
 252
 253 set GDB_FULLPATH [find_gdb $GDB]
 254
 255 # Remove any old copy lying around.
 256 remote_file host delete x$tool
 257
 258 gdb_start
 259 set file [remote_download host $GDB_FULLPATH x$tool]
 260 set result [test_observer $file];
 261 gdb_exit;
 262 catch "remote_file host delete $file";
 263
 264 if {$result <0} then {
 265     warning "Couldn't test self"
 266     return -1
 267 }