.NET 本事－非同步程式設計
.NET 本事－非同步程式設計
關於本書
（本書目前為 alpha 版，內容仍在持續更新）
這本書的目標是讓讀者了解：
- 非同步呼叫與執行緒等相關基礎概念。
- .NET 平台目前主流的非同步程式 API，包括 TPL 與 C# 的 async 與 await 語法（舊的 API 與寫法僅簡單帶過）。
- 非同步呼叫的建議寫法，以及如何避免一些常犯的錯誤。
- 撰寫多執行緒應用程式時，經常需要用到的同步化技巧。
- 其他實用的 API。
關於作者
Bundles that include this book
書籍目錄
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關於本書
- 誰適合閱讀本書
- 在何處購買
- 書寫慣例
- 本書用到的工具
- 範例程式與補充資料
- 版本更新紀錄
- 關於作者
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1. 從零開始
- 1.1 話說從頭：處理序與執行緒
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1.2 執行緒帶來的負擔
- 1.2.1 Context Switch
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1.3 爭先恐後－關於優先順序
- 1.3.1 處理序的優先順序
- 1.3.2 執行緒的優先順序
- 1.4 並行、平行、非同步
- 1.5 本章回顧
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2. .NET 非同步 API 概覽
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2.1 專屬執行緒
- 2.1.1 建立與啟動執行緒
- 2.1.2 等待與暫停執行緒
- 2.1.3 共享變數
- 2.1.4 執行緒同步化
- 2.1.5 前景執行緒 vs. 背景執行緒
- 2.1.6 使用專屬執行緒的時機
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2.2 執行緒集區
- 2.2.1 執行緒集區的運作方式
- 2.2.2 工作執行緒與 I/O 執行緒
- 2.2.3 使用執行緒集區
- 2.3 非同步程式設計模型（APM）
- 2.4 基於事件的非同步模式（EAP）
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2.5 基於工作的非同步模式（TAP）
- 2.5.1 工作平行程式庫（TPL）
- 2.5.2 建立與起始非同步工作
- 2.6 非同步程式設計
- 2.7 重點回顧
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2.1 專屬執行緒
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3. async 與 await 基礎
- 3.1 基礎觀念：控制流
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3.2 Hello, async / await
- 3.2.1 範例：同步呼叫
- 3.2.2 範例：非同步呼叫
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3.3 關鍵字
async與await的作用 -
3.4 避免使用
async void - 3.5 Async Main 方法
- 3.6 觀察執行緒切換過程
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3.7 我的程式當掉了？！
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3.7.1
SynchronizationContext - 3.7.2 鎖死的原因與解法
- 3.7.3 Windows Forms 程式鎖死的範例
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3.7.1
- 3.8 重點回顧
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4. 非同步程式設計常用技巧
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4.1 非同步方法的各種樣貌
- 4.1.1 非同步介面方法
- 4.1.2 非同步屬性？
- 4.1.3 非同步建構函式？
- 4.1.4 非同步 Lambda
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4.2 非同步延遲
- 4.2.1 重試機制
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4.3 傳回已完成的工作
- 4.3.1 不要 await Task.FromResult()
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4.4 等待工作完成
- 4.4.1 等待一組工作完成
- 4.4.2 等待任意一個工作完成
- 4.5 取消工作
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4.6 工作的延續
- 4.6.1 串接與組合多項工作
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4.6.2
TaskContinuationOptions - 4.6.3 取消「中間的」延續工作
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4.7 混合使用同步與非同步方法
- 4.7.1 在非同步方法中呼叫同步方法
- 4.7.2 在同步方法中呼叫非同步方法
- 4.7.3 不要寫假的 async 方法
- 4.8 進度回報
- 4.9 錯誤處理
- 4.10 為非同步方法撰寫單元測試
- 4.11 重點回顧
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4.1 非同步方法的各種樣貌
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