bool called = false;

async void noop() {
}

async void foo_async() {
	if (called) {
		stdout.puts("foo_async(): wait\n");
		while (called)
			yield noop();
		return;
	}
	stdout.puts("foo_async(): execute\n");
	called = true;
	for (var i = 0; i < 100000; ++i);
		yield noop();
	called = false;
}

int main() {

	foo_async.begin((obj, res) => {
		foo_async.end(res);
		stdout.puts("1'st foo_async() ended\n");
	});


	foo_async.begin((obj, res) => {
		foo_async.end(res);
		stdout.puts("2'nd foo_async() ended\n");
	});

	var loop = new MainLoop();

	var t = new TimeoutSource(0);
	t.set_callback(() => {
		loop.quit();
		return false;
	});
	t.attach(loop.get_context());
	loop.run();

	return 0;
}