#include <u.h>
#include <libc.h>
#include <thread.h>

void
altproc(void *arg)
{
	Alt a[2];
	int i;

	a[0].c	= arg;
	a[0].v	= nil;
	a[0].op	= CHANRCV;
	a[1].op	= CHANEND;

	for(;;) {
		switch(i = alt(a)) {
		case 0:
			print("a[%d]\n", i);
			if(chanclosing(a[i].c) == 0) {
				print("a[%d].c closed\n", i);
				continue;
			}
			break;

		default:
			print("altproc exiting\n");
			threadexits(nil);
		}
	}
}

void
threadmain(int, char **)
{
	Channel *c;

	c = chancreate(sizeof(void *), 0);
	threadcreate(altproc, c, 1024);
	if(1)
		chanclose(c);
	chanfree(c);
	print("closed c\n");
	print("threadmain exiting\n");
	threadexits(nil);
}