_fixdelay.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 38 行

#ifdef lint
static char *sccsid = "@(#)_fixdelay.c	4.1	(ULTRIX)	7/2/90";
#endif lint

#include "curses.ext"

/*
 * The use has just changed his notion of whether we want nodelay mode.
 * Do any system dependent processing.
 */
/* ARGSUSED */
_fixdelay(old, new)
bool old, new;
{
#ifdef USG
# include <fcntl.h>
	int fl, rv, fd;
	extern int errno;
	FILE	*inf;

	inf = SP -> term_file;
	if( inf == stdout )
	{
		inf = stdin;
	}
	fd = fileno( inf );
	fl = fcntl(fd, F_GETFL, 0);
	if (new)
		fl |= O_NDELAY;
	else
		fl &= ~O_NDELAY;
	if (old != new)
		rv = fcntl(fd, F_SETFL, fl);
#else
	/* No system dependent processing on the V7 or Berkeley systems. */
#endif
}