适用于Unity的快速、强大、GC友好的C#信号事件。_C#_下载.zip

# Relay Fast, light, GC-friendly C# signals/events for Unity. --- C# `event` multicasting is a nice language-level feature, but in Unity's version of Mono, events allocate a lot on addition/removal and aren't always easy to manipulate. Relay aims to address these issues. * Additional functionality * `AddOnce()` automatically removes a listener after dispatch * Guard against duplicate listeners for safety, or disable checking for increased performance * `Contains()` tells you whether a delegate is already subscribed * Debug mode helps diagnose ["dangling" or "lapsed" listeners](https://en.wikipedia.org/wiki/Lapsed_listener_problem) - a common cause of GC issues in event-driven architectures * Minimal allocation using arrays of delegates * C# `event` re-allocates the _entire multicast object_ each time `+=` or `-=` called * Relay uses a dynamic array of singlecast delegates * Performant addition, removal and dispatch * Geometric array resize (like `List<>.Add()`) amortizes addition costs * Dispatch virtually as fast as native multicast * Battle-tested * Heavily used in core code of our game [Sublevel Zero](http://www.sublevelzerogame.com) on PC, VR, PS4 and Xbox One * ~100% unit test coverage (unit tests included) [Read the wiki](https://github.com/SixWays/Relay/wiki) for detailed instructions. Relay is inspired by the Signals implementation in [StrangeIoC](https://github.com/strangeioc/strangeioc) (but drastically improves performance and allocation). ## Performance (Tested in Unity 5.6) Profiled performance comparison of `event`, `Relay` and a `List` of delegates. Each operation is performed 100000 times with 10 listeners. Add Unique means disallowing duplicate listeners. ### Time (ms) |Method|Add|Add Unique|Remove|Clear|Dispatch| |-----|-----|-----|-----|-----|-----| |event|1465 |N/A |1155 |3.688|67.28| |Relay|150.5|318.2|270.0|10.27|79.92| |List |183.5|466.0|368.0|9.436|79.00| ### GC Alloc (MB) |Method|Add|Remove| |-----|----|----| |event|630 |530 | |Relay|38.1|0 | |List |32.8|0 | All other operations are allocation-free. Note that this is *worst-case* GC performance for `Relay` (and `List`) as each loop creates a completely new `Relay`. Populating and clearing the same `Relay` 100000 times just allocates 400B initially, while `event` still allocates 630MB. Note: Under .NET 4.6 `event` addition and removal is 2-7x faster than under Unity. Perf tests and unit tests are included in Relay/Editor.