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# Copyright 2003, 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see .

# This file was written by Joel Brobecker (brobecker@gnat.com), derived

# from xfullpath.exp.

if $tracelevel then {

    strace $tracelevel

}

set prms_id 0

set bug_id 0

# are we on a target board

if { [is_remote target] || ![isnative] } then {

    return

}

proc setup_test { executable } {

    global gdb_prompt

    global timeout

    # load yourself into the debugger

    # This can take a relatively long time, particularly for testing where

    # the executable is being accessed over a network, or where gdb does not

    # support partial symbols for a particular target and has to load the

    # entire symbol table.  Set the timeout to 10 minutes, which should be

    # adequate for most environments (it *has* timed out with 5 min on a

    # SPARCstation SLC under moderate load, so this isn't unreasonable).

    # After gdb is started, set the timeout to 30 seconds for the duration

    # of this test, and then back to the original value.

    set oldtimeout $timeout

    set timeout 600

    verbose "Timeout is now $timeout seconds" 2

    global gdb_file_cmd_debug_info

    set gdb_file_cmd_debug_info "unset"

    set result [gdb_load $executable]

    set timeout $oldtimeout

    verbose "Timeout is now $timeout seconds" 2

    if { $result != 0 } then {

        return -1

    }

    if { $gdb_file_cmd_debug_info != "debug" } then {

        untested "No debug information, skipping testcase."

        return -1

    }

    # Set a breakpoint at main

    gdb_test "break captured_main" \

            "Breakpoint.*at.* file.*, line.*" \

            "breakpoint in captured_main"

    # run yourself

    # It may take a very long time for the inferior gdb to start (lynx),

    # so we bump it back up for the duration of this command.

    set timeout 600

    set description "run until breakpoint at captured_main"

    gdb_test_multiple "run -nw" "$description" {

        -re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.* at .*main.c:.*$gdb_prompt $" {

            pass "$description"

        }

        -re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.*$gdb_prompt $" {

            xfail "$description (line numbers scrambled?)"

        }

        -re "vfork: No more processes.*$gdb_prompt $" {

            fail "$description (out of virtual memory)"

            set timeout $oldtimeout

            verbose "Timeout is now $timeout seconds" 2

            return -1

        }

        -re ".*$gdb_prompt $" {

            fail "$description"

            set timeout $oldtimeout

            verbose "Timeout is now $timeout seconds" 2

            return -1

        }

    }

    set timeout $oldtimeout

    verbose "Timeout is now $timeout seconds" 2

    return 0

}

proc attach_first_observer { message } {

    gdb_test "set \$first_obs = observer_attach_test_notification (&observer_test_first_notification_function)" \

        "" "$message; attach first observer"

}

proc attach_second_observer { message } {

    gdb_test "set \$second_obs = observer_attach_test_notification (&observer_test_second_notification_function)" \

        "" "$message; attach second observer"

}

proc attach_third_observer { message } {

    gdb_test "set \$third_obs = observer_attach_test_notification (&observer_test_third_notification_function)" \

        "" "$message; attach third observer"

}

proc detach_first_observer { message } {

    gdb_test "call observer_detach_test_notification (\$first_obs)" \

        "" "$message; detach first observer"

}

proc detach_second_observer { message } {

    gdb_test "call observer_detach_test_notification (\$second_obs)" \

        "" "$message; detach second observer"

}

proc detach_third_observer { message } {

    gdb_test "call observer_detach_test_notification (\$third_obs)" \

        "" "$message; detach third observer"

}

proc check_counters { first second third message } {

    gdb_test "print observer_test_first_observer" \

        ".\[0-9\]+ =.*$first" \

        "$message; check first observer counter value"

    gdb_test "print observer_test_second_observer" \

        ".\[0-9\]+ =.*$second" \

        "$message; check second observer counter value"

    gdb_test "print observer_test_third_observer" \

        ".\[0-9\]+ =.*$third" \

        "$message; check third observer counter value"

}

proc reset_counters { message } {

    gdb_test "set variable observer_test_first_observer = 0" "" \

        "$message; reset first observer counter"

    gdb_test "set variable observer_test_second_observer = 0" "" \

        "$message; reset second observer counter"

    gdb_test "set variable observer_test_third_observer = 0" "" \

        "$message; reset third observer counter"

}

proc test_notifications { first second third message args } {

    # Do any initialization

    for {set i 0} {$i < [llength $args]} {incr i} {

        [lindex $args $i] $message

    }

    reset_counters $message

    # Call observer_notify_test_notification.  Note that this procedure

    # takes one argument, but this argument is ignored by the observer

    # callbacks we have installed.  So we just pass an arbitrary value.

    gdb_test "call observer_notify_test_notification (0)" "" \

        "$message; sending notification"

    check_counters $first $second $third $message

}

proc test_observer { executable } {

    set setup_result [setup_test $executable]

    if {$setup_result <0} then {

        return -1

    }

    # First, try sending a notification without any observer attached.

    test_notifications 0 0 0 "no observer attached"

    # Now, attach one observer, and send a notification.

    test_notifications 0 1 0 "second observer attached" \

        attach_second_observer

    # Remove the observer, and send a notification.

    test_notifications 0 0 0 "second observer detached" \

        detach_second_observer

    # With a new observer.

    test_notifications 1 0 0 "1st observer added" \

        attach_first_observer

    # With 2 observers.

    test_notifications 1 1 0 "2nd observer added" \

        attach_second_observer

    # With 3 observers.

    test_notifications 1 1 1 "3rd observer added" \

        attach_third_observer

    # Remove middle observer.

    test_notifications 1 0 1 "2nd observer removed" \

        detach_second_observer

    # Remove first observer.

    test_notifications 0 0 1 "1st observer removed" \

        detach_first_observer

    # Remove last observer.

    test_notifications 0 0 0 "3rd observer removed" \

        detach_third_observer

    # Go back to 3 observers, and remove them in a different order...

    test_notifications 1 1 1 "three observers added" \

        attach_first_observer \

        attach_second_observer \

        attach_third_observer

    # Remove the third observer.

    test_notifications 1 1 0 "third observer removed" \

        detach_third_observer

    # Remove the second observer.

    test_notifications 1 0 0 "second observer removed" \

        detach_second_observer

    # Remove the first observer, no more observers.

    test_notifications 0 0 0 "first observer removed" \

        detach_first_observer

    return 0

}

# Find a pathname to a file that we would execute if the shell was asked

# to run $arg using the current PATH.

proc find_gdb { arg } {

    # If the arg directly specifies an existing executable file, then

    # simply use it.

    if [file executable $arg] then {

        return $arg

    }

    set result [which $arg]

    if [string match "/" [ string range $result 0 0 ]] then {

        return $result

    }

    # If everything fails, just return the unqualified pathname as default

    # and hope for best.

    return $arg

}

# Run the test with self.

# Copy the file executable file in case this OS doesn't like to edit its own

# text space.

set GDB_FULLPATH [find_gdb $GDB]

# Remove any old copy lying around.

remote_file host delete x$tool

gdb_start

set file [remote_download host $GDB_FULLPATH x$tool]

set result [test_observer $file];

gdb_exit;

catch "remote_file host delete $file";

if {$result <0} then {

    warning "Couldn't test self"

    return -1

}