/* Definitions used by event-top.c, for GDB, the GNU debugger.
- Copyright (C) 1999, 2001, 2003, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2021 Free Software Foundation, Inc.
Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
#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 (char *new_prompt);
-void gdb_setup_readline (void);
-void gdb_disable_readline (void);
-extern void async_init_signals (void);
-extern void set_async_editing_command (char *args, int from_tty,
- struct cmd_list_element *c);
+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);
-/* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
-#ifndef STOP_SIGNAL
-#include <signal.h>
#ifdef SIGTSTP
-#define STOP_SIGNAL SIGTSTP
-extern void handle_stop_sig (int sig);
-#endif
+extern void handle_sigtstp (int sig);
#endif
+
extern void handle_sigint (int sig);
extern void handle_sigterm (int sig);
-extern void gdb_readline2 (void *client_data);
-extern void mark_async_signal_handler_wrapper (void *token);
extern void async_request_quit (void *arg);
extern void stdin_event_handler (int error, void *client_data);
extern void async_disable_stdin (void);
/* Exported variables from event-top.c.
FIXME: these should really go into top.h. */
-extern int async_command_editing_p;
-extern int exec_done_display_p;
-extern char *async_annotation_suffix;
+extern bool set_editing_cmd_var;
+extern bool exec_done_display_p;
extern struct prompts the_prompts;
-extern void (*call_readline) (void *);
-extern void (*input_handler) (char *);
-extern int input_fd;
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);
+
+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 ();
-extern void cli_command_loop (void);
+ private:
+ segv_handler_t m_old_handler;
+};
#endif