关键词: PACS ORB 并发 主动对象

Abstract:

The single concurrency model in common CORBA ORB can not be applied to the complex context environment of distributed PACS. Based on a research of the   ORB multiple concurrency model and PACS application services, this paper presents an adaptive concurrency strategy suitable for distributed PACs The st   rategy can select the single-threaded or muhi-threaded concurrency model adaptively during runtime. Moreover, the design of a protocol handler based on   active objects can simplify the synchronized access to multi-threaded concurrency objects. The strategy satisfies the high throughput and low latency of   QoS demands in distributed PACS.

Key words: （PACS, ORB, concurrency;active object）