# Copyright 2002, 2003, 2004, 2005, 2007, 2008 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/>.

# This only works with native configurations
if {![isnative]} {
  return
}

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

gdb_exit
if {[mi_gdb_start]} {
    continue
}

proc myreverse { list } {
    if { [llength $list] <= 1 } {
        return $list
    }
    set tail [lrange $list 1 [llength $list]]
    set rtail [myreverse $tail]
    lappend rtail [lindex $list 0]
    return $rtail
}

proc check_thread_states { xstates test } {
    global expect_out
    set states [myreverse $xstates]
    set pattern "\\^done,threads=\\\["
    foreach s $states {
        set pattern "${pattern}(.*)state=\"$s\""
    }
    set pattern "$pattern\\\}\\\].*"

    verbose -log "expecting: $pattern"
    mi_gdb_test "-thread-info" $pattern $test
}

#
# Start here
#
set testfile "non-stop"
set srcfile "$testfile.c"
set binfile "$objdir/$subdir/mi-$testfile"

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

mi_gdb_reinitialize_dir $srcdir/$subdir
mi_gdb_load $binfile

set supported 0
send_gdb "-gdb-show non-stop\n"
gdb_expect {
    -re ".*\\^done,value=\"off\",supported=\"(\[^\"\]+)\"\r\n$mi_gdb_prompt$" {
        if { $expect_out(1,string) == "1" } {
            set supported 1
        }
    }
    -re ".$mi_gdb_prompt$" {
    }
}

mi_gdb_test "-gdb-set non-stop 1" ".*"
mi_gdb_test "-gdb-set target-async 1" ".*"
detect_async

mi_gdb_test "200-break-insert -t main" ".*"
# Note: presently, we skip this test on non-native targets,
# so 'run' is OK.  As soon as we start to run this on remote
# target, the logic from mi_run_cmd will have to be refactored.
send_gdb "-exec-run\n"
gdb_expect {
    -re ".*\\^running.*$mi_gdb_prompt$" {
    }
    -re "\\^error,msg=\"The target does not support running in non-stop mode.\"" {
        verbose -log "Non-stop mode not supported, skipping all tests"
        return
    }
    -re ".*\r\n$mi_gdb_prompt$" {
        perror "Cannot start target (unknown output after running)"
        return -1
    }
    timeout {
        perror "Cannot start target (timeout)"
        return -1
    }
}
mi_expect_stop "breakpoint-hit" main ".*" ".*" "\[0-9\]+" { "" "disp=\"del\"" } "run to main"

mi_create_breakpoint break_at_me 2 keep break_at_me .* .* .* "breakpoint at marker"

mi_send_resuming_command "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"

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_send_resuming_command "exec-continue --thread 2" "resume 1"
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"
check_thread_states {"running" "stopped" "stopped"} "thread state, stop 2"

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

send_gdb "-exec-interrupt --thread 1\n" 
gdb_expect {
    -re "\\^done\r\n$mi_gdb_prompt\\*stopped\[^\r\n\]+\r\n$" {
        pass "interrupted"
    }
    timeout {
        fail "interrupted (timeout)"
    }
}
# 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
check_thread_states {"stopped" "stopped" "stopped"} "thread state, stop 4"

send_gdb "-exec-continue --all\n"
gdb_expect {
    -re ".*\\*running,thread-id=\"3\"\r\n\\*running,thread-id=\"2\"\r\n\\*running,thread-id=\"1\"\r\n$mi_gdb_prompt" {
        pass "resume all"
    }
    timeout {
        fail "resume all (timeout)"
    }
}

check_thread_states {"running" "running" "running"} "thread state, resume all"

mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "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_send_resuming_command "exec-continue --thread 2" "resume 2"
mi_send_resuming_command "exec-continue --thread 3" "resume 3"

sleep 2
mi_expect_stop "breakpoint-hit" "break_at_me" ".*" "non-stop.c" ".*" {"" "disp=\"keep\""} "w0,i3 stop"
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"
gdb_expect {
    -re ".*=thread-exited,id=\"2\"\r\n$" {
        pass "wait for thread exit"
    }
    timeout {
        fail "wait for thread exit (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