static void setRepeatingTimer(struct nodeInstanceData *ctx, const VuoReal seconds, VuoOutputTrigger(fired,VuoInteger))
{
	if (ctx->timer)
		cancelRepeatingTimer(ctx);

	dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
	ctx->timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, q);

	uint64_t nanoseconds = seconds * NSEC_PER_SEC;
	dispatch_source_set_timer(ctx->timer, dispatch_time(DISPATCH_TIME_NOW, nanoseconds), nanoseconds, 0);
	dispatch_source_set_event_handler(ctx->timer, ^{
		fired(++ctx->eventCount);
	});
static void setRepeatingTimer(struct nodeInstanceData *ctx, const VuoReal seconds, VuoOutputTrigger(fired,void))
{
	cancelRepeatingTimer(ctx);

	if (seconds <= 0)
		return;

	dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
	ctx->timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, q);

	uint64_t nanoseconds = (seconds > 0.001 ? (seconds * NSEC_PER_SEC) : (NSEC_PER_SEC / 1000));
	dispatch_source_set_timer(ctx->timer, dispatch_time(DISPATCH_TIME_NOW, nanoseconds), nanoseconds, 0);
	dispatch_source_set_event_handler(ctx->timer, ^{
		fired();
	});