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/* Definitions used by event-top.c, for GDB, the GNU debugger.
Copyright (C) 1999-2023 Free Software Foundation, Inc.
Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
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/>. */
#ifndef EVENT_TOP_H
#define EVENT_TOP_H
#include <signal.h>
struct cmd_list_element;
/* Exported functions from event-top.c.
FIXME: these should really go into top.h. */
extern void display_gdb_prompt (const char *new_prompt);
extern void gdb_setup_readline (int);
extern void gdb_disable_readline (void);
extern void gdb_init_signals (void);
extern void change_line_handler (int);
extern void command_line_handler (gdb::unique_xmalloc_ptr<char> &&rl);
extern void command_handler (const char *command);
#ifdef SIGTSTP
extern void handle_sigtstp (int sig);
#endif
extern void handle_sigint (int sig);
extern void handle_sigterm (int sig);
extern void async_request_quit (void *arg);
extern void async_disable_stdin (void);
extern void async_enable_stdin (void);
/* Exported variables from event-top.c.
FIXME: these should really go into top.h. */
extern bool set_editing_cmd_var;
extern bool exec_done_display_p;
extern struct prompts the_prompts;
extern void (*after_char_processing_hook) (void);
extern int call_stdin_event_handler_again_p;
extern void gdb_readline_no_editing_callback (void *client_data);
/* Wrappers for rl_callback_handler_remove and
rl_callback_handler_install that keep track of whether the callback
handler is installed in readline. Do not call the readline
versions directly. */
extern void gdb_rl_callback_handler_remove (void);
extern void gdb_rl_callback_handler_install (const char *prompt);
/* Reinstall the readline callback handler (with no prompt), if not
currently installed. */
extern void gdb_rl_callback_handler_reinstall (void);
/* Called by readline after a complete line has been gathered from the
user, but before the line is dispatched to back to GDB. This function
is a wrapper around readline's builtin rl_deprep_terminal function, and
handles the case where readline received EOF. */
extern void gdb_rl_deprep_term_function (void);
typedef void (*segv_handler_t) (int);
/* On construction, replaces the current thread's SIGSEGV handler with
the provided one. On destruction, restores the handler to the
original one. */
class scoped_segv_handler_restore
{
public:
scoped_segv_handler_restore (segv_handler_t new_handler);
~scoped_segv_handler_restore ();
private:
segv_handler_t m_old_handler;
};
#endif
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