Distributed Implementation and Debugging Schemes for a Object-Oriented Concurrent Programming Language

我们为面向对象并发语言ABCL/1设计了一个虚拟分布式系统，它由虚拟前端处理机和虚拟结点处理机池组成。每个对象被实现为在虚拟节点处理器上执行的虚拟堆栈机。语言处理器将源代码翻译成虚拟堆栈机器代码。此外，还提出了一种高贵的分布式垃圾收集方案，并将其应用于我们的实现中。该方案采用了分布式快照技术。提出了一种并发面向对象系统的调试方法。我们的方法基于一个称为对象组的新概念。对象组是形成执行集体任务的自然单元的对象的集合。面向对象并发语言ABCL/1引入了指定和使用对象组的语言结构。

We designed a virtual distributed system for an object-oriented concurrent language ABCL/1 which consists of the virtual front-end processor and a pool of virtual node processors. Each object is implemented as a virtual stack machine which is executed on a virtual node processor. The language processor translate source code into the virtual stack machine code. Also, a noble distributed garbage collection scheme is presented which is used in our implementation. The scheme employs the Distributed Snapshot technique. A debugging method for Concurrent Object-Oriented Systems is developed. Our method is based upon a new notion called Object Groups. An Object Group is a collection of objects which forms a natural unit for performing collective tasks. The language constructs which specify and use Object Groups have been introduced into an object-oriented concurrent language ABCL/1.