Remove make_cleanup_restore_target_terminal

This removes make_cleanup_restore_target_terminal and generally
C++-ifies target terminal handling.  It changes all target_terminal_*
functions to be static members of a new target_terminal class and
changes the cleanup to be a scoped_* class.
make_cleanup_override_quit_handler is also removed in favor of simply
using scoped_restore.

Note that there are some files in this patch that I could not compile.
Considering that some of the rewrites were automated, and that none of
these files involed cleanups, I feel that this is relatively safe.

Regression tested by the buildbot.

gdb/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* windows-nat.c (get_windows_debug_event, windows_wait)
	(do_initial_windows_stuff, windows_attach): Update.
	* utils.c (vwarning, internal_vproblem): Update.
	(ui_unregister_input_event_handler_cleanup)
	(prepare_to_handle_input): Remove.
	(class scoped_input_handler): New.
	(defaulted_query, prompt_for_continue): Update.
	* tui/tui-hooks.c (tui_refresh_frame_and_register_information):
	Update.
	* top.c (undo_terminal_modifications_before_exit): Update.
	* target/target.h (target_terminal_init, target_terminal_inferior)
	(target_terminal_ours): Don't declare.
	(class target_terminal): New.
	* target.h (target_terminal_is_inferior, target_terminal_is_ours)
	(target_terminal_ours_for_output)
	(make_cleanup_restore_target_terminal): Don't declare.
	(target_terminal_info): Remove.
	* target.c (enum terminal_state, terminal_state): Remove.
	(target_terminal::terminal_state): Define.
	(target_terminal::init): Rename from target_terminal_init.
	(target_terminal::inferior): Rename from
	target_terminal_inferior.
	(target_terminal::ours): Rename from target_terminal_ours.
	(target_terminal::ours_for_output): Rename from
	target_terminal_ours_for_output.
	(target_terminal::info): New method.
	(cleanup_restore_target_terminal)
	(make_cleanup_restore_target_terminal): Remove.
	* solib.c (handle_solib_event): Update.
	* remote.c (remote_serial_quit_handler): Update.
	(remote_terminal_inferior, remote_wait_as): Update.
	* record-full.c (record_full_wait_1): Update.
	* nto-procfs.c (procfs_create_inferior): Update.
	* nat/fork-inferior.c (startup_inferior): Update.
	* mi/mi-interp.c (mi_new_thread, mi_thread_exit)
	(mi_record_changed, mi_inferior_added, mi_inferior_appeared)
	(mi_inferior_exit, mi_inferior_removed, mi_traceframe_changed)
	(mi_tsv_created, mi_tsv_deleted, mi_tsv_modified)
	(mi_breakpoint_created, mi_breakpoint_deleted)
	(mi_breakpoint_modified, mi_on_resume, mi_solib_loaded)
	(mi_solib_unloaded, mi_command_param_changed, mi_memory_changed)
	(mi_user_selected_context_changed, report_initial_inferior):
	Update.
	* linux-nat.c (linux_nat_attach, linux_nat_terminal_ours)
	(linux_nat_terminal_inferior): Update.
	* infrun.c (follow_fork_inferior)
	(handle_vfork_child_exec_or_exit, do_target_resume)
	(check_curr_ui_sync_execution_done, handle_inferior_event_1)
	(handle_signal_stop, maybe_remove_breakpoints, normal_stop):
	Update.
	* inflow.c (child_terminal_init, info_terminal_command): Update.
	* infcmd.c (post_create_inferior, continue_1, prepare_one_step)
	(attach_command): Update.
	* infcall.c (call_thread_fsm_should_stop): Update.
	* gnu-nat.c (gnu_attach): Update.
	* extension.c (struct active_ext_lang_state)
	(restore_active_ext_lang): Update.
	* exceptions.c (print_flush): Update.
	* event-top.c (async_enable_stdin, default_quit_handler): Update.
	(struct quit_handler_cleanup_data, restore_quit_handler)
	(restore_quit_handler_dtor, make_cleanup_override_quit_handler):
	Remove.
	* cp-support.c (gdb_demangle): Update.
	* breakpoint.c (update_inserted_breakpoint_locations)
	(insert_breakpoint_locations, handle_jit_event)
	(disable_breakpoints_in_unloaded_shlib): Update.
	* annotate.c (annotate_breakpoints_invalid)
	(annotate_frames_invalid): Update.

gdb/gdbserver/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* target.c (target_terminal::terminal_state): Define.
	(target_terminal::init): Rename from target_terminal_init.
	(target_terminal::inferior): Rename from
	target_terminal_inferior.
	(target_terminal::ours): Rename from target_terminal_ours.
	(target_terminal::ours_for_output, target_terminal::info): New.
This commit is contained in:
Tom Tromey
2017-09-19 21:56:36 -06:00
parent 013af3fc8e
commit 223ffa714c
28 changed files with 382 additions and 378 deletions

View File

@ -67,6 +67,7 @@
#include "gdb_regex.h"
#include "job-control.h"
#include "common/selftest.h"
#include "common/gdb_optional.h"
#if !HAVE_DECL_MALLOC
extern PTR malloc (); /* ARI: PTR */
@ -276,12 +277,11 @@ vwarning (const char *string, va_list args)
(*deprecated_warning_hook) (string, args);
else
{
struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
gdb::optional<target_terminal::scoped_restore_terminal_state> term_state;
if (target_supports_terminal_ours ())
{
make_cleanup_restore_target_terminal ();
target_terminal_ours_for_output ();
term_state.emplace ();
target_terminal::ours_for_output ();
}
if (filtered_printing_initialized ())
wrap_here (""); /* Force out any buffered output. */
@ -290,8 +290,6 @@ vwarning (const char *string, va_list args)
fputs_unfiltered (warning_pre_print, gdb_stderr);
vfprintf_unfiltered (gdb_stderr, string, args);
fprintf_unfiltered (gdb_stderr, "\n");
do_cleanups (old_chain);
}
}
@ -485,10 +483,11 @@ internal_vproblem (struct internal_problem *problem,
}
/* Try to get the message out and at the start of a new line. */
gdb::optional<target_terminal::scoped_restore_terminal_state> term_state;
if (target_supports_terminal_ours ())
{
make_cleanup_restore_target_terminal ();
target_terminal_ours_for_output ();
term_state.emplace ();
target_terminal::ours_for_output ();
}
if (filtered_printing_initialized ())
begin_line ();
@ -897,32 +896,43 @@ make_hex_string (const gdb_byte *data, size_t length)
/* A cleanup that simply calls ui_unregister_input_event_handler. */
/* An RAII class that sets up to handle input and then tears down
during destruction. */
static void
ui_unregister_input_event_handler_cleanup (void *ui)
class scoped_input_handler
{
ui_unregister_input_event_handler ((struct ui *) ui);
}
public:
/* Set up to handle input. */
scoped_input_handler ()
: m_quit_handler (make_scoped_restore (&quit_handler,
default_quit_handler)),
m_ui (NULL)
{
target_terminal::ours ();
ui_register_input_event_handler (current_ui);
if (current_ui->prompt_state == PROMPT_BLOCKED)
m_ui = current_ui;
}
static struct cleanup *
prepare_to_handle_input (void)
{
struct cleanup *old_chain;
~scoped_input_handler ()
{
if (m_ui != NULL)
ui_unregister_input_event_handler (m_ui);
}
old_chain = make_cleanup_restore_target_terminal ();
target_terminal_ours ();
DISABLE_COPY_AND_ASSIGN (scoped_input_handler);
ui_register_input_event_handler (current_ui);
if (current_ui->prompt_state == PROMPT_BLOCKED)
make_cleanup (ui_unregister_input_event_handler_cleanup, current_ui);
private:
make_cleanup_override_quit_handler (default_quit_handler);
/* Save and restore the terminal state. */
target_terminal::scoped_restore_terminal_state m_term_state;
return old_chain;
}
/* Save and restore the quit handler. */
scoped_restore m_quit_handler;
/* The saved UI, if non-NULL. */
struct ui *m_ui;
};
@ -987,9 +997,8 @@ defaulted_query (const char *ctlstr, const char defchar, va_list args)
/* Restrict queries to the main UI. */
|| current_ui != main_ui)
{
old_chain = make_cleanup_restore_target_terminal ();
target_terminal_ours_for_output ();
target_terminal::scoped_restore_terminal_state term_state;
target_terminal::ours_for_output ();
wrap_here ("");
vfprintf_filtered (gdb_stdout, ctlstr, args);
@ -998,18 +1007,13 @@ defaulted_query (const char *ctlstr, const char defchar, va_list args)
y_string, n_string, def_answer);
gdb_flush (gdb_stdout);
do_cleanups (old_chain);
return def_value;
}
if (deprecated_query_hook)
{
int res;
old_chain = make_cleanup_restore_target_terminal ();
res = deprecated_query_hook (ctlstr, args);
do_cleanups (old_chain);
return res;
target_terminal::scoped_restore_terminal_state term_state;
return deprecated_query_hook (ctlstr, args);
}
/* Format the question outside of the loop, to avoid reusing args. */
@ -1026,7 +1030,7 @@ defaulted_query (const char *ctlstr, const char defchar, va_list args)
using namespace std::chrono;
steady_clock::time_point prompt_started = steady_clock::now ();
prepare_to_handle_input ();
scoped_input_handler prepare_input;
while (1)
{
@ -1590,7 +1594,7 @@ prompt_for_continue (void)
beyond the end of the screen. */
reinitialize_more_filter ();
prepare_to_handle_input ();
scoped_input_handler prepare_input;
/* Call gdb_readline_wrapper, not readline, in order to keep an
event loop running. */