# Copyright 2013-2020 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 that disconnecting and reconnecting doesn't lose signals.

set gdbserver_reconnect_p 1
if { [info proc gdb_reconnect] == "" } {
    return 0
}

standard_testfile
set executable ${testfile}

if { [gdb_compile_pthreads \
	  "${srcdir}/${subdir}/${srcfile}" \
	  "${binfile}" \
	  executable {debug}] != "" } {
    untested "failed to compile"
    return -1
}

clean_restart $executable

if ![runto_main] then {
    fail "can't run to main"
    return 0
}

gdb_test "continue" "signal SIGUSR1.*" "continue to signal"

# Check that it's thread 2 that is selected.
gdb_test "info threads" "\\* 2 .*" "thread 2 is selected"

set msg "save \$pc after signal"
set saved_pc ""
gdb_test_multiple "print/x \$pc" $msg {
    -re "\\\$$decimal = (\[^\r\n\]*)\r\n$gdb_prompt $" {
	set saved_pc $expect_out(1,string)
	pass $msg
    }
}

# Switch to the other thread.
gdb_test "thread 1" "thread 1.*" "switch to thread 1"

# Force GDB to select thread 1 on the remote end as well.
gdb_test "print/x \$pc"

gdb_test "disconnect" "Ending remote debugging\\." "disconnect after signal"

set test "reconnect after signal"

set res [gdb_reconnect]
if { [lindex $res 0] == 0 } {
    pass $test
} else {
    fail $test
    return 0
}

# Check that thread 2 is re-selected.
gdb_test "info threads" "\\* 2 .*" "thread 2 is selected on reconnect"

# Check that the program is still alive, and stopped in the same spot.
gdb_test "print/x \$pc" "\\\$$decimal = $saved_pc" "check \$pc after signal"

# Check that we didn't lose the signal.
gdb_test "info program" "stopped with signal SIGUSR1,.*"

# Nor does the program.
gdb_test "b handle" "Breakpoint .*" "set breakpoint in signal handler"
gdb_test "continue" "handle.*" "continue to signal handler"