binutils-gdb/gdb/testsuite/gdb.ada/task_watch.exp

# Copyright 2009-2022 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 <http://www.gnu.org/licenses/>.

# Test task-specific watchpoints.

load_lib "ada.exp"

if { [skip_ada_tests] } { return -1 }

standard_ada_testfile foo

if {[gdb_compile_ada "${srcfile}" "${binfile}" executable {debug}] != ""} {
  return -1
}

clean_restart ${testfile}

set bp_location [gdb_get_line_number "STOP_HERE" ${testdir}/foo.adb]
runto "foo.adb:$bp_location"

# Make sure that all tasks appear in the "info tasks" listing, and
# that the active task is the environment task.
gdb_test "info tasks" \
    [join {" +ID +TID P-ID Pri State +Name" \
	       "\\* +1 .* main_task" \
	       " +2 .* task_list\\(1\\)" \
	       " +3 .* task_list\\(2\\)" \
	       " +4 .* task_list\\(3\\)"} \
	 "\r\n"] \
    "info tasks before inserting breakpoint"

# Insert a watchpoint that should stop only if task 3 stops, and
# extract its number.
set bp_number -1
set test "watch -location value task 3"
gdb_test_multiple $test $test {
    -re "atchpoint ($decimal): -location value\r\n$gdb_prompt $" {
	set bp_number $expect_out(1,string)
	pass $test
    }
}

if {$bp_number < 0} {
    return
}

# Continue to that watchpoint.  Task 2 should hit it first, and GDB
# is expected to ignore that hit and resume the execution.  Only then
# task 3 will hit our watchpoint, and GDB is expected to stop at that
# point.  Also make sure that GDB reports the correct watchpoint number.
gdb_test "continue" \
    ".* hit .*atchpoint $bp_number: -location value.*Old value = 1.*New value = 2.*" \
    "continue to watchpoint"

# Check that it is indeed task 3 that hit the watchpoint by checking
# which is the active task.
gdb_test "info tasks" \
    [join {" +ID +TID P-ID Pri State +Name" \
	       " +1 .* main_task" \
	       " +2 .* task_list\\(1\\)" \
	       "\\* +3 .* task_list\\(2\\)" \
	       " +4 .* task_list\\(3\\)"} \
	 "\r\n"] \
    "info tasks after hitting watchpoint"

# Now, resume the execution and make sure that GDB does not stop when
# task 4 hits the watchpoint. Continuing thus results in our program
# running to completion.
set bp_location [gdb_get_line_number "STOP_HERE_2" ${testdir}/foo.adb]
gdb_breakpoint foo.adb:$bp_location
gdb_continue_to_breakpoint second ".*foo.adb:$bp_location.*null; -- STOP_HERE_2"