摘要:

The paper first identifies the concurrency requirements for a high-level concurrent programming language, and then discusses how the concurrency primitives proposed for the programming language Ada meet these requirements. This is followed by a description of an actual implementation of the Ada tasking constructs on a distributed multiprocessor computer system comprising a number of multiprocessor-shared memory stations linked by a serial communications network. A brief description of the system and the overheads involved when implementing the rendezvous mechanism on this architecture is presented, and also the implications of processing interrupts by mapping them into external entry calls to high-level service tasks are discussed

ISSN:1744-683X    

DOI:10.1049/sm.1982.0043

出版商:IEE    

年代:1982

数据来源: IET

摘要:

A technique for distributing interrupts in a multiprocessor system is described. The technique employs a decentralised control and arbitration technique which is very modular and inexpensive in interconnections. Interrupt vectoring is supported and individual processor latency to interrupts are masked from the distribution system so that high-speed distribution can be achieved. The use of the technique obviates the need to have dedicated interrupt connections

ISSN:1744-683X    

DOI:10.1049/sm.1982.0044

出版商:IEE    

年代:1982

数据来源: IET

摘要:

A small nucleus suitable for a multitasking real-time control application is presented. It is shown that by using an appropriate high-level language (Modula-2) the implementation of such a nucleus is straightforward, and sufficiently transparent to allow it to be readily adapted for different applications. Timing tests are given which show that the performance of the nucleus compares very well even with that obtained from assembly-coded operating systems

ISSN:1744-683X    

DOI:10.1049/sm.1982.0045

出版商:IEE    

年代:1982

数据来源: IET

ISSN:1744-683X    

DOI:10.1049/sm.1982.0046

出版商:IEE    

年代:1982

数据来源: IET