Re: [9front] Re: speaking of screenlock

[Stuart Morrow <morrow.stuart@gmail.com>]

> What makes you think they can't access
> each other's malloc'ed objects?

Because it crashes in the second call to redraw (new function, only in
the first of this thread, assuming you got that), and moreover, I can
get past the killer 'r = screen->r' using a trick:

redraw(void)
{
	int fd, dx, dy;
	static Image *i;
	static Rectangle r, unusedr, screenr;
	Point p, q;

	screen = _screen->image;	/* fullscreen */

	/* we can access screen->r the first time. */
	/* getwindow doesn't change it… fullscreen is fullscreen… */
	if(eqrect(screenr, unusedr))
		screenr = screen->r;

(and then s/screen->r/screenr/g for the rest of the function)

just to then get killed by, I guess, draw(screen, ...).

So it seems like just touching certain objects is killing me.

Regardless, the following should replace what's in current screenlock:

void
top(void*)
{
	int fd, n;
	char buf[128];

	if((fd = open("/dev/wctl", ORDWR)) < 0)
		return;

	for(;;){
		n = read(fd, buf, sizeof buf);
		if(n > 48)
			if(strstr(buf+48, "notcurrent")){
				write(fd, "current", 7); /* rio redraws border… */
				(getwindow-redraw is right here in the crashing version)
			}
	}
}

Stuart