南京大学：《面向对象技术 OOT》课程教学资源（PPT课件讲稿）并发对象 Concurrent Objects

最病 过摘要 口并发基础知识 口并发与面向对象程序设计 口Java并发模型 n Semaphores and reader/writer in Java Institute of Computer Software 2021/1/27 Nanjing University

摘要  并发基础知识  并发与面向对象程序设计  Java并发模型  Semaphores and reader/writer in Java 2021/1/27 Institute of Computer Software Nanjing University 21

最病 A Concurrent OOP 口如何结合并发程序设计的Task/ Thread概念和面 向对象程序设计的○biec概念? 口仅使用操作系统提供的并发机制 口直接结合 Active Object( Actor Model) 口异步方法调用 ■完全异步 Futures Java:不结粹的 Active Object模型 Institute of Computer Software 2021/1/27 Nanjing University

Concurrent OOP  如何结合并发程序设计的Task/Thread概念和面 向对象程序设计的Object概念？  仅使用操作系统提供的并发机制  直接结合 Active Object (Actor Model)  异步方法调用 ◼ 完全异步 ◼ “Futures” 2021/1/27 Institute of Computer Software Nanjing University 22 Java: 不纯粹的Active Object模型

最病 A Merging Objects and Tasks n Object in sequential context a Answer to incoming calls reactive behavior “ Passive” objects Caller tasks execute on called objects a Single task is implicitly created upon program start ■ Executes“main Institute of Computer Software 2021/1/27 Nanjing University

Merging Objects and Tasks  Object in sequential context  Answer to incoming calls, reactive behavior  “Passive” objects ◼ Caller tasks execute on called objects  Single task is implicitly created upon program start ◼ Executes “main” 2021/1/27 Institute of Computer Software Nanjing University 23

最病 A Merging Objects and Tasks “Acve” objects a Objects with autonomous behavior a Own associated task Possibly synchronizes with tasks calling object Institute of Computer Software 2021/1/27 Nanjing University

Merging Objects and Tasks  “Active” objects  Objects with autonomous behavior  Own associated task ◼ Possibly synchronizes with tasks calling object 2021/1/27 Institute of Computer Software Nanjing University 24

最病 E Model of Concurrency 口 Actor mode 口 Petri net 口 Process co|cUi a CCS, CSP Pi calculus, ambient calculus Institute of Computer Software 2021/1/27 Nanjing University

Model of Concurrency  Actor Model  Petri Net  Process Calculi  CCS, CSP, Pi Calculus, Ambient Calculus… 2021/1/27 Institute of Computer Software Nanjing University 25