臺灣博碩士論文加值系統

本論文提出一種多執行緒優化策略的設計與實現，以增強嵌入式應用程式的使用者界面的性能和效率，透過使用多執行緒技術進行直觀的資源分配和任務管理。應用程式中的每個任務都分配給特定的背景執行緒，允許在適當時間進行高效、穩定的處理。主執行緒採用非同步方法來處理資料，不僅可提高效能，還能減少記憶體消耗。我們將從多執行緒架構的設計討論其對UI 響應能力，並點出遇到的問題及解決方法，最後記錄多執行緒架構在應用程式上的運行效率。

This thesis presents the design and implementation of a multi-threading optimization strategy in embedded applications to enhance user interface performance and efficiency. The proposed application focuses on intuitive resource allocation and task management through the use of multi-threading techniques. Each task within the application is assigned to a specific background thread, allowing for efficient and stable processing at appropriate times. The main thread employs asynchronous methods to handle data processing, which not only improves performance but also reduces memory consumption. We discuss the impact of the multi-threading architecture on UI responsiveness, and record the execution efficiency of the multi-threading architectures on the application.

摘要 I
ABSTRACT II
誌謝 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
1.1 研究背景 1
1.2 研究動機 1
1.2.1 傳統單執行緒架構的缺點 1
1.3 研究目的 2
1.4 論文章節編排 3
第二章 相關研究 4
2.1 MVC 4
2.2 GRAND CENTRAL DISPATCH (GCD) 5
2.2.1 DispatchQueue 5
2.2.2 DispatchGroup 6
2.3 REALM DATABASE 6
2.4 APPLE PUSH NOTIFICATION SERVICE (APNS) 8
第三章 系統設計 9
3.1 並行隊列(CONCURRENT QUEUE) 9
3.1.1 API 網路請求的架構設計 9
3.1.2 非同步執行下競態條件產生問題 10
3.1.3 非同步執行下競態條件問題的解決方法 11
3.2 串行隊列(SERIAL QUEUE) 13
3.2.1 串行隊列的流程介紹 13
3.2.2 資料儲存的處理 14
3.2.3 推播通知的處理 15
3.3 系統運行的流程控制 16
第四章 系統開發成果與執行效率比較 17
4.1 實際應用 17
4.1.1 多檔案上傳 17
4.1.2 聊天介面的元件渲染 20
4.2 執行效率分析 24
4.2.1 測試工具 24
4.2.2 API 網路請求的響應時間比較 25
4.2.3 資料庫儲存分析 26
4.2.4 檔案上傳分析 27
第五章 結論 28
參考文獻 29

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