old-cross-binutils/gdb/testsuite/gdb.mi/mi-nsintrall.exp
Pedro Alves 329ea57934 enable target async by default; separate MI and target notions of async
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.
2014-05-29 14:38:02 +01:00

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# 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/>.
if { ![support_displaced_stepping] } {
unsupported "displaced stepping"
return -1
}
load_lib mi-support.exp
set MIFLAGS "-i=mi"
gdb_exit
if {[mi_gdb_start]} {
continue
}
#
# Start here
#
standard_testfile nsintrall.c
set options [list debug]
if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $options] != "" } {
return -1
}
mi_gdb_reinitialize_dir $srcdir/$subdir
mi_gdb_load $binfile
mi_gdb_test "-gdb-set non-stop 1" ".*"
mi_gdb_test "-gdb-set mi-async 1" ".*"
mi_detect_async
if { [mi_run_to_main] < 0 } {
continue
}
mi_create_breakpoint thread_function \
"breakpoint at thread_function" \
-number 2 -func thread_function
mi_send_resuming_command "exec-continue --all" "resume all"
for {set i 0} {$i < 6} {incr i} {
mi_expect_stop "breakpoint-hit" "thread_function" "\[^\n\]*" "$srcfile" \
"\[0-9\]*" {"" "disp=\"keep\""} "stop $i"
}
mi_check_thread_states \
{"stopped" "stopped" "stopped" "stopped" "stopped" "stopped"} \
"thread state, all stopped"
# now that we know about all the threads, we can get rid of the breakpoints
mi_delete_breakpoints
# Here we create a response string. Note we don't want \r\n at the end,
# since mi_gdb_test will append this itself.
set running_re ""
for {set i 6} {$i > 1} {incr i -1} {
set running_re "$running_re\\*running,thread-id=\"$i\"\r\n"
}
set running_re "$running_re\\*running,thread-id=\"1\""
mi_gdb_test "-exec-continue --all" "\[^\n\]*\r\n$running_re" \
"resume all, no breakpoint"
mi_check_thread_states \
{"running" "running" "running" "running" "running" "running"} \
"thread state, resume all"
mi_gdb_test "200-exec-interrupt --all" "200\\^done" "interrupt all threads"
for {set i 0} {$i < 6} {incr i} {
mi_expect_interrupt "interrupt $i"
}
mi_check_thread_states \
{"stopped" "stopped" "stopped" "stopped" "stopped" "stopped"} \
"thread state, all interrupted"
# resume all threads, and check that no thread is spuriously left interrupted
mi_gdb_test "-exec-continue --all" "\[^\n\]*\r\n$running_re" \
"resume all after interrupting"
sleep 1
mi_check_thread_states \
{"running" "running" "running" "running" "running" "running"} \
"thread state, resume all after interrupting"
mi_gdb_exit