/* * Copyright (c) 2017-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ /* We model dispatch_once in a separate file rather than Dispatch.m because this code doesn't compile together with Foundation. */ #import typedef void (^dispatch_block_t)(void); typedef long dispatch_once_t; static void _dispatch_once(dispatch_once_t* predicate, __nonnull dispatch_block_t block) { block(); }