case DISPATCH_CONTINUATION_TYPE()

in src/introspection.c [230:255]


		case DISPATCH_CONTINUATION_TYPE(ASYNC_REDIRECT):
			DISPATCH_INTERNAL_CRASH(0, "Handled by the caller");
		case DISPATCH_CONTINUATION_TYPE(MACH_ASYNC_REPLY):
			break;
		case DISPATCH_CONTINUATION_TYPE(MACH_SEND_BARRRIER_DRAIN):
			break;
		case DISPATCH_CONTINUATION_TYPE(MACH_SEND_BARRIER):
		case DISPATCH_CONTINUATION_TYPE(MACH_RECV_BARRIER):
			flags = (uintptr_t)dc->dc_data;
			dq = dq->do_targetq;
			break;
		case DISPATCH_CONTINUATION_TYPE(MACH_IPC_HANDOFF):
			flags = (uintptr_t)dc->dc_data;
			break;
		default:
			DISPATCH_INTERNAL_CRASH(dc->do_vtable, "Unknown dc vtable type");
		}
	} else if (flags & (DC_FLAG_SYNC_WAITER | DC_FLAG_ASYNC_AND_WAIT)) {
		dispatch_sync_context_t dsc = (dispatch_sync_context_t)dc;
		waiter = pthread_from_mach_thread_np(dsc->dsc_waiter);
		ctxt = dsc->dsc_ctxt;
		func = dsc->dsc_func;
	} else if (func == _dispatch_apply_invoke ||
			func == _dispatch_apply_redirect_invoke) {
		dispatch_apply_t da = ctxt;
		if (da->da_todo) {