binutils-gdb/gdb/observable.c
Tom Tromey a75cd9a2c1 Add observable to watch current source symtab
This patch adds an observable, so that a later patch can change the
TUI to notice when the user has selected a new source symtab, say via
"list".

gdb/ChangeLog
2019-12-20  Tom Tromey  <tom@tromey.com>

	* source.c (struct current_source_location) <set, symtab, line>:
	New methods.
	<m_symtab, m_line>: Rename.  Now private.
	(get_current_source_symtab_and_line)
	(set_default_source_symtab_and_line)
	(set_current_source_symtab_and_line)
	(clear_current_source_symtab_and_line, select_source_symtab)
	(info_source_command, print_source_lines_base)
	(info_line_command, search_command_helper): Update.
	* observable.h (current_source_symtab_and_line_changed): Declare
	observable.
	* observable.c (current_source_symtab_and_line_changed): Define
	observable.

Change-Id: I3c0f6b40f2df84b590bdf5b5ec5ccd8423bb7f22
2019-12-20 09:15:57 -07:00

102 lines
3.2 KiB
C

/* GDB Notifications to Observers.
Copyright (C) 2003-2019 Free Software Foundation, Inc.
This file is part of GDB.
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/>. */
#include "defs.h"
#include "observable.h"
#include "command.h"
#include "gdbcmd.h"
namespace gdb
{
namespace observers
{
unsigned int observer_debug;
#define DEFINE_OBSERVABLE(name) decltype (name) name (# name)
DEFINE_OBSERVABLE (normal_stop);
DEFINE_OBSERVABLE (signal_received);
DEFINE_OBSERVABLE (end_stepping_range);
DEFINE_OBSERVABLE (signal_exited);
DEFINE_OBSERVABLE (exited);
DEFINE_OBSERVABLE (no_history);
DEFINE_OBSERVABLE (sync_execution_done);
DEFINE_OBSERVABLE (command_error);
DEFINE_OBSERVABLE (target_changed);
DEFINE_OBSERVABLE (executable_changed);
DEFINE_OBSERVABLE (inferior_created);
DEFINE_OBSERVABLE (record_changed);
DEFINE_OBSERVABLE (solib_loaded);
DEFINE_OBSERVABLE (solib_unloaded);
DEFINE_OBSERVABLE (new_objfile);
DEFINE_OBSERVABLE (free_objfile);
DEFINE_OBSERVABLE (new_thread);
DEFINE_OBSERVABLE (thread_exit);
DEFINE_OBSERVABLE (thread_stop_requested);
DEFINE_OBSERVABLE (target_resumed);
DEFINE_OBSERVABLE (about_to_proceed);
DEFINE_OBSERVABLE (breakpoint_created);
DEFINE_OBSERVABLE (breakpoint_deleted);
DEFINE_OBSERVABLE (breakpoint_modified);
DEFINE_OBSERVABLE (traceframe_changed);
DEFINE_OBSERVABLE (architecture_changed);
DEFINE_OBSERVABLE (thread_ptid_changed);
DEFINE_OBSERVABLE (inferior_added);
DEFINE_OBSERVABLE (inferior_appeared);
DEFINE_OBSERVABLE (inferior_exit);
DEFINE_OBSERVABLE (inferior_removed);
DEFINE_OBSERVABLE (memory_changed);
DEFINE_OBSERVABLE (before_prompt);
DEFINE_OBSERVABLE (gdb_datadir_changed);
DEFINE_OBSERVABLE (command_param_changed);
DEFINE_OBSERVABLE (tsv_created);
DEFINE_OBSERVABLE (tsv_deleted);
DEFINE_OBSERVABLE (tsv_modified);
DEFINE_OBSERVABLE (inferior_call_pre);
DEFINE_OBSERVABLE (inferior_call_post);
DEFINE_OBSERVABLE (register_changed);
DEFINE_OBSERVABLE (user_selected_context_changed);
DEFINE_OBSERVABLE (source_styling_changed);
DEFINE_OBSERVABLE (current_source_symtab_and_line_changed);
} /* namespace observers */
} /* namespace gdb */
static void
show_observer_debug (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("Observer debugging is %s.\n"), value);
}
void
_initialize_observer (void)
{
add_setshow_zuinteger_cmd ("observer", class_maintenance,
&gdb::observers::observer_debug, _("\
Set observer debugging."), _("\
Show observer debugging."), _("\
When non-zero, observer debugging is enabled."),
NULL,
show_observer_debug,
&setdebuglist, &showdebuglist);
}