static void _dispatch_timer_unote_register()

in src/event/event.c [25:61]

• 33 lines of code
• 6 McCabe index (conditional complexity)

static void _dispatch_timer_unote_register(dispatch_timer_source_refs_t dt,
		dispatch_wlh_t wlh, dispatch_priority_t pri);
static void _dispatch_timer_unote_resume(dispatch_timer_source_refs_t dt);
static void _dispatch_timer_unote_unregister(dispatch_timer_source_refs_t dt);

DISPATCH_NOINLINE
static dispatch_unote_t
_dispatch_unote_create(dispatch_source_type_t dst,
		uintptr_t handle, uintptr_t mask)
{
	dispatch_unote_linkage_t dul;
	dispatch_unote_class_t du;

	if (mask & ~dst->dst_mask) {
		return DISPATCH_UNOTE_NULL;
	}

	if (dst->dst_mask && !mask) {
		return DISPATCH_UNOTE_NULL;
	}

	if (dst->dst_flags & EV_UDATA_SPECIFIC) {
		du = _dispatch_calloc(1u, dst->dst_size);
	} else {
		dul = _dispatch_calloc(1u, sizeof(*dul) + dst->dst_size);
		du = _dispatch_unote_linkage_get_unote(dul)._du;
	}
	du->du_type = dst;
	du->du_can_be_wlh = dst->dst_per_trigger_qos;
	du->du_ident = (dispatch_unote_ident_t)handle;
	du->du_filter = dst->dst_filter;
	du->du_fflags = (__typeof__(du->du_fflags))mask;
	if (dst->dst_flags & EV_UDATA_SPECIFIC) {
		du->du_is_direct = true;
	}
	return (dispatch_unote_t){ ._du = du };
}