_fixdelay.c

来自「操作系统SunOS 4.1.3版本的源码」· C语言 代码 · 共 38 行

#ifndef lint
static	char sccsid[] = "@(#)_fixdelay.c 1.1 92/07/30 SMI"; /* from S5R2 1.1 */
#endif

#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
}