mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
329ea57934
This finally makes background execution commands possible by default. However, in order to do that, there's one last thing we need to do -- we need to separate the MI and target notions of "async". Unlike the CLI, where the user explicitly requests foreground vs background execution in the execution command itself (c vs c&), MI chose to treat "set target-async" specially -- setting it changes the default behavior of execution commands. So, we can't simply "set target-async" default to on, as that would affect MI frontends. Instead we have to make the setting MI-specific, and teach MI about sync commands on top of an async target. Because the "target" word in "set target-async" ends up as a potential source of confusion, the patch adds a "set mi-async" option, and makes "set target-async" a deprecated alias. Rather than make the targets always async, this patch introduces a new "maint set target-async" option so that the GDB developer can control whether the target is async. This makes it simpler to debug issues arising only in the synchronous mode; important because sync mode seems unlikely to go away. Unlike in previous revisions, "set target-async" does not affect this new maint parameter. The rationale for this is that then one can easily run the test suite in the "maint set target-async off" mode and have tests that enable mi-async fail just like they fail on non-async-capable targets. This emulation is exactly the point of the maint option. I had asked Tom in a previous iteration to split the actual change of the target async default to a separate patch, but it turns out that that is quite awkward in this version of the patch, because with MI async and target async decoupled (unlike in previous versions), if we don't flip the default at the same time, then just "set target-async on" alone never actually manages to do anything. It's best to not have that transitory state in the tree. Given "set target-async on" now only has effect for MI, the patch goes through the testsuite removing it from non-MI tests. MI tests are adjusted to use the new and less confusing "mi-async" spelling. 2014-05-29 Pedro Alves <palves@redhat.com> Tom Tromey <tromey@redhat.com> * NEWS: Mention "maint set target-async", "set mi-async", and that background execution commands are now always available. * target.h (target_async_permitted): Update comment. * target.c (target_async_permitted, target_async_permitted_1): Default to 1. (set_target_async_command): Rename to ... (maint_set_target_async_command): ... this. (show_target_async_command): Rename to ... (maint_show_target_async_command): ... this. (_initialize_target): Adjust. * infcmd.c (prepare_execution_command): Make extern. * inferior.h (prepare_execution_command): Declare. * infrun.c (set_observer_mode): Leave target async alone. * mi/mi-interp.c (mi_interpreter_init): Install mi_on_sync_execution_done as sync_execution_done observer. (mi_on_sync_execution_done): New function. (mi_execute_command_input_handler): Don't print the prompt if we just started a synchronous command with an async target. (mi_on_resume): Check sync_execution before printing prompt. * mi/mi-main.h (mi_async_p): Declare. * mi/mi-main.c: Include gdbcmd.h. (mi_async_p): New function. (mi_async, mi_async_1): New globals. (set_mi_async_command, show_mi_async_command, mi_async): New functions. (exec_continue): Call prepare_execution_command. (run_one_inferior, mi_cmd_exec_run, mi_cmd_list_target_features) (mi_execute_async_cli_command): Use mi_async_p. (_initialize_mi_main): Install "set mi-async". Make "target-async" a deprecated alias. 2014-05-29 Pedro Alves <palves@redhat.com> Tom Tromey <tromey@redhat.com> * gdb.texinfo (Non-Stop Mode): Remove "set target-async 1" from example. (Asynchronous and non-stop modes): Document '-gdb-set mi-async'. Mention that target-async is now deprecated. (Maintenance Commands): Document maint set/show target-async. 2014-05-29 Pedro Alves <palves@redhat.com> Tom Tromey <tromey@redhat.com> * gdb.base/async-shell.exp: Don't enable target-async. * gdb.base/async.exp * gdb.base/corefile.exp (corefile_test_attach): Remove 'async' parameter. Adjust. (top level): Don't test with "target-async". * gdb.base/dprintf-non-stop.exp: Don't enable target-async. * gdb.base/gdb-sigterm.exp: Don't test with "target-async". * gdb.base/inferior-died.exp: Don't enable target-async. * gdb.base/interrupt-noterm.exp: Likewise. * gdb.mi/mi-async.exp: Use "mi-async" instead of "target-async". * gdb.mi/mi-nonstop-exit.exp: Likewise. * gdb.mi/mi-nonstop.exp: Likewise. * gdb.mi/mi-ns-stale-regcache.exp: Likewise. * gdb.mi/mi-nsintrall.exp: Likewise. * gdb.mi/mi-nsmoribund.exp: Likewise. * gdb.mi/mi-nsthrexec.exp: Likewise. * gdb.mi/mi-watch-nonstop.exp: Likewise. * gdb.multi/watchpoint-multi.exp: Adjust comment. * gdb.python/py-evsignal.exp: Don't enable target-async. * gdb.python/py-evthreads.exp: Likewise. * gdb.python/py-prompt.exp: Likewise. * gdb.reverse/break-precsave.exp: Don't test with "target-async". * gdb.server/solib-list.exp: Don't enable target-async. * gdb.threads/thread-specific-bp.exp: Likewise. * lib/mi-support.exp: Adjust to use mi-async.
83 lines
2.5 KiB
Plaintext
83 lines
2.5 KiB
Plaintext
# Copyright 2008-2014 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 asynchronous Machine Interface (MI) responses.
|
|
#
|
|
|
|
# Because of the way this test is written, using 'start' and not using
|
|
# mi_run_cmd, it ignores whatever target the rest of GDB testsuite is
|
|
# using, and always tries to run natively. So, don't do anything unless
|
|
# we're actually testing native.
|
|
if { !([isnative] && [istarget *-linux*]) } then {
|
|
return
|
|
}
|
|
|
|
# The plan is for async mode to become the default but toggle for now.
|
|
set saved_gdbflags $GDBFLAGS
|
|
set GDBFLAGS [concat $GDBFLAGS " -ex \"set mi-async on\""]
|
|
|
|
load_lib mi-support.exp
|
|
|
|
gdb_exit
|
|
if [mi_gdb_start] {
|
|
continue
|
|
}
|
|
|
|
standard_testfile basics.c
|
|
|
|
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
|
|
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 $line_main_head + 3]
|
|
|
|
mi_send_resuming_command_raw "start" "start: send"
|
|
mi_expect_stop "breakpoint-hit" "main" "" ".*basics.c" "$line_main_body" { "" "disp=\"del\"" } "start: stop"
|
|
|
|
mi_send_resuming_command_raw "next" "CLI next: send"
|
|
mi_expect_stop "end-stepping-range" "main" "" ".*basics.c" "$line_main_next" "" "CLI next: stop"
|
|
|
|
mi_gdb_test "-exec-interrupt" \
|
|
"" \
|
|
""
|
|
|
|
mi_send_resuming_command_raw "start" "restart: send"
|
|
mi_expect_stop "breakpoint-hit" "main" "" ".*basics.c" "$line_main_body" { "" "disp=\"del\"" } "restart: stop"
|
|
}
|
|
|
|
|
|
linux_async_tests
|
|
|
|
mi_gdb_exit
|
|
|
|
set GDBFLAGS $saved_gdbflags
|
|
|
|
return 0
|