Handle various OS signals. More...

#include "angband.h"
#include "game-world.h"
#include "savefile.h"
#include "ui-game.h"
#include "ui-signals.h"
#include "ui-term.h"
#include <signal.h>
#include <sys/types.h>

Typedefs
typedef void(*	Signal_Handler_t) (int)

Functions
static Signal_Handler_t	wrap_signal (int sig, Signal_Handler_t handler)
	Wrapper around signal() which it is safe to take the address of, in case signal itself is hidden by some some macro magic. More...

static void	handle_signal_suspend (int sig)
	Handle signals – suspend. More...

static void	handle_signal_simple (int sig)
	Handle signals – simple (interrupt and quit) More...

static void	handle_signal_abort (int sig)
	Handle signal – abort, kill, etc. More...

void	signals_ignore_tstp (void)
	Ignore SIGTSTP signals (keyboard suspend) More...

void	signals_handle_tstp (void)
	Handle SIGTSTP signals (keyboard suspend) More...

void	signals_init (void)
	Prepare to handle the relevant signals. More...

Variables
s16b	signal_count

static Signal_Handler_t(*	signal_aux )(int, Signal_Handler_t) = wrap_signal

Detailed Description

Handle various OS signals.

This work is free software; you can redistribute it and/or modify it under the terms of either:

a) the GNU General Public License as published by the Free Software Foundation, version 2, or

b) the "Angband licence": This software may be copied and distributed for educational, research, and not for profit purposes provided that this copyright and statement are included in all such copies. Other copyrights may also apply.

Typedef Documentation

◆ Signal_Handler_t

typedef void(* Signal_Handler_t) (int)

Function Documentation

◆ handle_signal_abort()

static void handle_signal_abort ( int sig )

static

Handle signal – abort, kill, etc.

References character_generated, character_saved, COLOUR_RED, player::died_from, my_strcpy(), quit(), savefile, savefile_save(), signal_aux, signals_ignore_tstp(), Term_erase(), Term_fresh(), Term_putstr(), and void().

Referenced by signals_init().

◆ handle_signal_simple()

static void handle_signal_simple ( int sig )

static

Handle signals – simple (interrupt and quit)

This function was causing a huge number of problems, so it has been simplified greatly. We keep a global variable which counts the number of times the user attempts to kill the process, and we commit suicide if the user does this a certain number of times.

We attempt to give "feedback" to the user as he approaches the suicide thresh-hold, but without penalizing accidental keypresses.

To prevent messy accidents, we should reset this global variable whenever the user enters a keypress, or something like that.

References character_generated, character_saved, close_game(), COLOUR_WHITE, player::died_from, player::is_dead, my_strcpy(), player_upkeep::playing, quit(), signal_aux, signal_count, Term_erase(), Term_fresh(), Term_putstr(), Term_xtra(), TERM_XTRA_NOISE, player::upkeep, and void().