Re: linux native async mode support

Nick Roberts
2008-03-18T00:06:10Z

> New patch attached. No regressions in async mode other than
> the same defines.exp regressions, and no regressions when async
> mode is disabled. --- tested on x86-64-unknown-linux-gnu.

I've tested it (evidently on i686-linux-gnu) with

set GDBFLAGS "-ex \"maint set linux-async on\""

in site.exp, ignoring commands.exp and just got a few extra exceptions:

FAIL: gdb.mi/mi-var-child-f.exp: mi runto MAIN__ (timeout)
FAIL: gdb.mi/mi-var-child-f.exp: create local variable array

FAIL: gdb.mi/mi2-simplerun.exp: continue to end (1)

FAIL: gdb.threads/pthreads.exp: check backtrace from main thread

Are you going to add any new tests?

My original test file mi-async.exp (attached below) works with your patch when
GDBFLAGS is toggled as above. It would be be good to have a test for
-exec-interrupt too.

--
Nick http://www.inet.net.nz/~nickrob

---------------------------------

# Copyright 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#
# Test asynchronous Machine Interface (MI) operations
#

load_lib mi-support.exp
set saved_gdbflags $GDBFLAGS
set GDBFLAGS "-ex \"maint set linux-async on\""

gdb_exit
if [mi_gdb_start] {
continue
}

set testfile "basics"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DFAKEARGV}] != "" } {
untested mi-async.exp
return -1
}

mi_delete_breakpoints
mi_gdb_reinitialize_dir $srcdir/$subdir
mi_gdb_load ${binfile}

# mi_gdb_test cannot be used for asynchronous commands because there are
# two prompts involved and this can lead to a race condition.

proc linux_async_tests {} {
global mi_gdb_prompt
global hex

set line_main_head [gdb_get_line_number "main ("]
set line_main_body [expr $line_main_head + 2]
set line_main_next [expr $line_main_head + 3]

send_gdb "start\n"
gdb_expect {
-re ".*\\^running\r\n\\^done\r\n$mi_gdb_prompt" {
gdb_expect {
-re "\\*stopped,thread-id=\"0\",frame=\{addr=\"$hex\",func=\"main\",args=\\\[\\\],file=\".*basics.c\",line=\"$line_main_body\"\}\r\n$mi_gdb_prompt$" {
pass "Asynchronous response after start command"
}
-re ".*$mi_gdb_prompt$" {
fail "Asynchronous response after start command (2)"
}
timeout {
fail "Asynchronous response after start command (timeout 2)"
}
}
}
-re ".*$mi_gdb_prompt$" {
fail "Asynchronous response after start command (1)"
}
timeout {fail "Asynchronous response after start command (timeout 1)"}
}

send_gdb "next\n"
gdb_expect {
-re "\\^running\r\n\\^done\r\n$mi_gdb_prompt" {
gdb_expect {
-re "\\*stopped,reason=\"end-stepping-range\",thread-id=\"0\",frame=\{addr=\"$hex\",func=\"main\",args=\\\[\\\],file=\".*basics.c\",line=\"$line_main_next\"\}\r\n$mi_gdb_prompt$" {
pass "Asynchronous response after next command"
}
-re ".*$mi_gdb_prompt$" {
fail "Asynchronous response after next command (2)"
}
timeout {
fail "Asynchronous response after next command (timeout 2)"
}
}
}
-re ".*$mi_gdb_prompt$" {
fail "Asynchronous response after next command (1)"
}
timeout {fail "Asynchronous response after next command (timeout 1)"}
}

send_gdb "start\n"
gdb_expect {
-re ".*\\^running\r\n\\^done\r\n$mi_gdb_prompt" {
gdb_expect {
-re "\\*stopped,thread-id=\"0\",frame=\{addr=\"$hex\",func=\"main\",args=\\\[\\\],file=\".*basics.c\",line=\"$line_main_body\"\}\r\n$mi_gdb_prompt$" {
pass "Asynchronous response after (re) start"
}
-re ".*$mi_gdb_prompt$" {
fail "Asynchronous response after (re) start (2)"
}
timeout {
fail "Asynchronous response after (re) start (timeout 2)"
}
}
}
-re ".*$mi_gdb_prompt$" {
fail "Asynchronous response after (re) start (1)"
}
timeout {fail "Asynchronous response after (re) start (timeout 1)"}
}
}

#if [istarget "i386-*-linux-gnu"] then {
linux_async_tests
#}

mi_gdb_exit

set GDBFLAGS $saved_gdbflags

return 0