| // |
| // Copyright 2018 Google Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| #import <Foundation/Foundation.h> |
| |
| NS_ASSUME_NONNULL_BEGIN |
| |
| /** |
| * EDORemoteVariable wraps out parameters for use beyond the scope of the current remote |
| * invocation. |
| * |
| * If an object receives a remote invocation containing an out parameter, that parameter is only |
| * valid within the scope of the execution of the containing invocation. If the out parameter needs |
| * to be stored and dereferenced later (after the remote invocation), the later dereference will |
| * crash due to an invalid memory access. In such cases, this class should be used instead of an |
| * out parameter because it will persist past the lifetime of the remote invocation. |
| */ |
| @interface EDORemoteVariable <ObjectType> : NSObject |
| |
| /** The wrapped out parameter. */ |
| @property(atomic, nullable) ObjectType object; |
| |
| @end |
| |
| NS_ASSUME_NONNULL_END |
