# Copyright 2002-2021 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/>.


if { ![support_displaced_stepping] } { 
    unsupported "displaced stepping"
    return -1
}

load_lib mi-support.exp
set MIFLAGS "-i=mi"

proc mi_nonstop_resume { command test } {
    if { [mi_send_resuming_command $command $test] != 0 } {
	# If a resume fails, assume non-stop is broken or unsupported
	# for this target.  We have logged a FAIL or UNSUPPORTED; skip
	# the remaining tests to limit timeouts.
	return -code continue
    }
}

#
# Start here
#
standard_testfile non-stop.c

set options [list debug]
if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $options] != "" } {
    return -1
}


save_vars { GDBFLAGS } {
    append GDBFLAGS " -ex \"set non-stop on\""
    mi_clean_restart $binfile
}

mi_gdb_test "-gdb-set mi-async 1" ".*"
mi_detect_async

if { [mi_runto_main] < 0 } {
    continue
}

mi_create_breakpoint break_at_me "breakpoint at marker" \
    -number 2 -func break_at_me

mi_nonstop_resume "exec-continue" "resume 1"
mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "disp=\"keep\""} "w0,i0 stop"
mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "disp=\"keep\""} "w1,i0 stop"

mi_check_thread_states {"running" "stopped" "stopped"} "thread state, stop 1"

mi_gdb_test "-thread-select 2" "\\^done.*" "select thread 2"
mi_create_varobj I_W0 "i" "create varobj in first thread"
mi_gdb_test "-thread-select 3" "\\^done.*" "select thread 3"
mi_create_varobj I_W1 "i" "create varobj in second thread" 

mi_nonstop_resume "exec-continue --thread 2" "resume 1"
mi_check_thread_states {"running" "running" "stopped"} "thread state, resume 1"
mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "disp=\"keep\""} "w0,i1 stop"
mi_check_thread_states {"running" "stopped" "stopped"} "thread state, stop 2"

mi_nonstop_resume "exec-continue --thread 3" "resume 2"
mi_check_thread_states {"running" "stopped" "running"} "thread state, resume 2"
mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "disp=\"keep\""} "w1,i1 stop"
mi_check_thread_states {"running" "stopped" "stopped"} "thread state, stop 3"

mi_varobj_update * {I_W1 I_W0} "update varobj, 1"
mi_check_varobj_value I_W0 1 "check varobj, w0, 1"
mi_check_varobj_value I_W1 1 "check varobj, w1, 1"

mi_gdb_test "-exec-interrupt --thread 1" "\\^done" "interrupted"
mi_expect_interrupt "got interrupt"

# The interrupt command sends SIGINT to the target, and therefore the
# thread might not be stopped immediately when we return from the target.
# So, wait a bit
sleep 1
mi_check_thread_states {"stopped" "stopped" "stopped"} "thread state, stop 4"

mi_gdb_test "-exec-continue --all" ".*\\*running,thread-id=\"1\"\r\n\\*running,thread-id=\"2\"\r\n\\*running,thread-id=\"3\"" \
    "resume all"

mi_expect_stop "breakpoint-hit" "break_at_me" "\[^\n\]*" "non-stop.c" "\[0-9\]*" {"" "disp=\"keep\""} "w0,i2 stop"
mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "disp=\"keep\""} "w1,i2 stop"

# At this point, thread 1 (main) is running, and worker threads are stopped.
# Check that we can modify breakpoint condition, even when operating on a 
# running thread.
mi_gdb_test "-break-condition --thread 1 2 id==1" "\\^done" "set condition, 1"

mi_nonstop_resume "exec-continue --thread 2" "resume 2"
mi_nonstop_resume "exec-continue --thread 3" "resume 3"

sleep 2
mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "disp=\"keep\""} "w0,i3 stop"
mi_check_thread_states {"running" "running" "stopped"} "thread state, stop on cond breakpoint"

# Check that when we update all varobj, we don't get no error about varobj
# bound to running thread.
mi_varobj_update * {I_W1} "update varobj, 2"
mi_check_varobj_value I_W1 3 "check varobj, w1, 1"


# Check that stack commands are allowed on a stopped thread, even if some other threads
# are running, and produce something sane.  Also check we check error on running thread.
mi_gdb_test "-stack-list-frames --thread 2" "\\^error,msg=\".*\"" "stacktrace of running thread"
mi_gdb_test "-stack-list-frames --thread 3" \
    "\\^done,stack=\\\[frame={level=\"0\",addr=\".*\",func=\"break_at_me\".*" \
    "stacktrace of stopped thread"

# verify that after thread exit, the thread is reported as exited in -thread-info, and
# we can still interact with other threads.
mi_gdb_test "-thread-select 2" "\\^done.*" "select first worker thread"
# Since thread 2 is running, we need to set variable via another thread.
mi_gdb_test "-gdb-set --thread 3 variable exit_first_thread=1" ".*\\^done" "ask the second thread to exit"

set test "wait for thread exit"
if { [mi_is_target_remote] } {
    # The remote protocol doesn't have support for thread exit
    # notifications.
    unsupported $test
} else {
    gdb_expect {
	-re ".*=thread-exited,id=\"2\",group-id=\"i\[0-9\]+\"\r\n$" {
	    pass $test
	}
	timeout {
	    fail "$test (timeout)"
	}
    }
}

# See that we can still poke other threads.
mi_gdb_test "-stack-list-frames --thread 3" \
    "\\^done,stack=\\\[frame={level=\"0\",addr=\".*\",func=\"break_at_me\".*" \
    "stacktrace of stopped thread"

mi_gdb_exit