gforth/engine/signals.c - diff

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Diff for /gforth/engine/signals.c between versions 1.3 and 1.10

version 1.3, 1999/02/28 21:31:50	version 1.10, 2000/09/23 15:06:08
Line 1	Line 1
/* signal handling	/* signal handling

Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.	Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.

This file is part of Gforth.	This file is part of Gforth.

Line 47	Line 47
UCell cols=DEFAULTCOLS;	UCell cols=DEFAULTCOLS;
UCell rows=DEFAULTROWS;	UCell rows=DEFAULTROWS;

	#ifndef SA_NODEFER
	#define SA_NODEFER 0
	/* systems that don't have SA_NODEFER hopefully don't block anyway */
	#endif

	#ifdef SA_SIGINFO
	void install_signal_handler(int sig, void (handler)(int, siginfo_t , void *))
	/* installs three-argument signal handler for sig */
	{
	struct sigaction action;

	action.sa_sigaction=handler;
	sigemptyset(&action.sa_mask);
	action.sa_flags=SA_RESTART\|SA_NODEFER\|SA_SIGINFO; /* pass siginfo */
	sigaction(sig, &action, NULL);
	}
	#endif

	typedef void Sigfunc(int);

	Sigfunc bsd_signal(int signo, Sigfunc func)
	{
	struct sigaction act, oact;

	act.sa_handler=func;
	sigemptyset(&act.sa_mask);
	act.sa_flags=SA_NODEFER;
	if (sigaction(signo,&act,&oact) < 0)
	return SIG_ERR;
	else
	return oact.sa_handler;
	}

static void	static void
graceful_exit (int sig)	graceful_exit (int sig)
Line 131 static void segv_handler(int sig, siginf	Line 163 static void segv_handler(int sig, siginf
#endif /* defined(SA_SIGINFO) */	#endif /* defined(SA_SIGINFO) */

#ifdef SIGCONT	#ifdef SIGCONT
static void termprep (int sig)	static void termprep(int sig)
{	{
signal(sig,termprep);	bsd_signal(sig,termprep);
terminal_prepped=0;	terminal_prepped=0;
}	}
#endif	#endif
Line 165 void get_winsize()	Line 197 void get_winsize()
#ifdef SIGWINCH	#ifdef SIGWINCH
static void change_winsize(int sig)	static void change_winsize(int sig)
{	{
signal(sig,change_winsize);	/* signal(sig,change_winsize); should not be necessary with bsd_signal */
#ifdef TIOCGWINSZ	#ifdef TIOCGWINSZ
get_winsize();	get_winsize();
#endif	#endif
}	}
#endif	#endif


#ifdef SA_SIGINFO
void install_signal_handler(int sig, void (handler)(int, siginfo_t , void *))
/* installs three-argument signal handler for sig */
{
struct sigaction action;

action.sa_sigaction=handler;
sigemptyset(&action.sa_mask);
action.sa_flags=SA_RESTART\|SA_SIGINFO; /* pass siginfo */
sigaction(sig, &action, NULL);
}
#endif

void install_signal_handlers(void)	void install_signal_handlers(void)
{	{

Line 319 void install_signal_handlers(void)	Line 337 void install_signal_handlers(void)
#endif	#endif
};	};
static short sigs_to_quit [] = {	static short sigs_to_quit [] = {
#ifdef SIGHUP
SIGHUP,
#endif
#ifdef SIGQUIT	#ifdef SIGQUIT
SIGQUIT,	SIGQUIT,
#endif	#endif
	#ifdef SIGHUP
	SIGHUP,
	#endif
#ifdef SIGABRT	#ifdef SIGABRT
SIGABRT,	SIGABRT,
#endif	#endif
Line 344 void install_signal_handlers(void)	Line 362 void install_signal_handlers(void)
signal (sigs_to_ignore [i], SIG_IGN);	signal (sigs_to_ignore [i], SIG_IGN);
*/	*/
for (i = 0; i < DIM (sigs_to_throw); i++)	for (i = 0; i < DIM (sigs_to_throw); i++)
signal(sigs_to_throw[i], throw_handler);	bsd_signal(sigs_to_throw[i], throw_handler);
for (i = 0; i < DIM (sigs_to_quit); i++)	for (i = 0; i < DIM (sigs_to_quit); i++)
signal (sigs_to_quit [i], graceful_exit);	bsd_signal(sigs_to_quit [i], graceful_exit);
#ifdef SA_SIGINFO	#ifdef SA_SIGINFO
install_signal_handler(SIGFPE, fpe_handler);	install_signal_handler(SIGFPE, fpe_handler);
install_signal_handler(SIGSEGV, segv_handler);	install_signal_handler(SIGSEGV, segv_handler);
#endif	#endif
#ifdef SIGCONT	#ifdef SIGCONT
signal (SIGCONT, termprep);	bsd_signal(SIGCONT, termprep);
#endif	#endif
#ifdef SIGWINCH	#ifdef SIGWINCH
signal (SIGWINCH, change_winsize);	bsd_signal(SIGWINCH, change_winsize);
#endif	#endif
}	}

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	Added in v.1.10