# This testcase is part of GDB, the GNU debugger.
#
# Copyright 2019-2023 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 what happens if we have multiple UIs in use, and an error
# occurs while running a GDB command.  Specifically, do both UIs
# return to an interactive state, or does one (or both) of them get
# stuck in a non-interactive state.

load_lib gdbserver-support.exp

standard_testfile

require allow_gdbserver_tests
# The test-case uses "spawn -pty", which creates a pty on build, which gdb
# cannot use on remote host.
require {!is_remote host}

save_vars { GDBFLAGS } {
    # If GDB and GDBserver are both running locally, set the sysroot to avoid
    # reading files via the remote protocol.
    if { ![is_remote host] && ![is_remote target] } {
	set GDBFLAGS "$GDBFLAGS -ex \"set sysroot\""
    }

    if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {
	return -1
    }
}

# Make sure we're disconnected, in case we're testing with an
# extended-remote board, therefore already connected.
gdb_test "disconnect" ".*"

# Start gdbserver.
set res [gdbserver_spawn "${binfile}"]
set gdbserver_protocol [lindex $res 0]
set gdbserver_gdbport [lindex $res 1]
set gdbserver_pid [exp_pid -i $server_spawn_id]

# Save the main UI's spawn ID.
set gdb_main_spawn_id $gdb_spawn_id

# Create the new PTY for the secondary console UI, issue the 'new-ui'
# command, and wait for a prompt on the second UI.
spawn -pty
set extra_spawn_id $spawn_id
set extra_tty_name $spawn_out(slave,name)
gdb_test_multiple "new-ui console $extra_tty_name" "new-ui" {
    -re "New UI allocated\r\n$gdb_prompt $" {
	pass $gdb_test_name
    }
}
with_spawn_id $extra_spawn_id {
    gdb_test_multiple "" "initial prompt on extra console" {
	-re "$gdb_prompt $" {
	    pass $gdb_test_name
	}
    }
}

# Connect to the remote and continue its execution from the other UI.
with_spawn_id $extra_spawn_id {
    gdb_test "target $gdbserver_protocol $gdbserver_gdbport" ".*" \
	"connect to gdbserver"

    # Issue a continue and consume the response.  Don't expect a prompt.
    gdb_test_multiple "continue" "continue - extra UI" {
	-re  "\r\nContinuing\.\r\n" {
	    pass $gdb_test_name
	}
    }
}

# We're going to kill the gdbserver, but before we do, lets make sure
# that the inferior has started executing.
with_spawn_id $server_spawn_id {
    gdb_test_multiple "" "ensure inferior is running" {
	-re "@@XX@@ Inferior Starting @@XX@@" {
	    pass $gdb_test_name
	}
	timeout {
	    fail $gdb_test_name
	}
    }
}

# Interact with the main UI.
with_spawn_id $gdb_main_spawn_id {
    gdb_test "echo hello\\n" "hello" "interact with GDB's main UI"
}

# Get the gdbserver PID.
set gdbserver_pid 0
with_spawn_id $gdb_main_spawn_id {
    gdb_test "interrupt"

    gdb_test_multiple "" "interrupt arrived" {
	-re "Program received signal SIGINT, Interrupt\\.\r\n" {
	    pass $gdb_test_name
	}
    }

    gdb_test_multiple "p server_pid" "" {
	-re -wrap " = ($decimal)" {
	    set gdbserver_pid $expect_out(1,string)
	    pass $gdb_test_name
	}
    }

    gdb_test_multiple continue "" {
	-re "Continuing\\.\r\n" {
	    pass $gdb_test_name
	}
    }
}

if { $gdbserver_pid == 0 } {
    return
}

# Now kill the gdbserver.
remote_exec target "kill -9 $gdbserver_pid"

# We expect to land back at a GDB prompt in both UIs, however there is
# currently an issue that in the original UI GDB doesn't reprint its
# prompt.  That said, getting a prompt isn't the point of this test.
# The point is that we should be able to interact with GDB from either
# interpreter now.

with_spawn_id $gdb_main_spawn_id {
    gdb_test_multiple "" "remote connection closed - main UI" {
	-re -wrap "Remote connection closed" {
	    pass $gdb_test_name
	}
    }
}

with_spawn_id $gdb_main_spawn_id {
    gdb_test "echo" "" \
	"main UI, prompt after gdbserver dies"
}

with_spawn_id $extra_spawn_id {
    gdb_test "echo" "" \
	"extra UI, prompt after gdbserver dies"
}