| Project/Area Number |
03452175
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
情報工学
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
OHNO Yutaka Ritsumeikan University Dept. of Science and Engineering Professor, 理工学部, 教授 (60026185)
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| Co-Investigator(Kenkyū-buntansha) |
OKUBO Eiji Ritsumeikan University Dept. of Science and Engineering Professor, 理工学部, 教授 (60127058)
HAYASHI Tunetoshi Ritsumeikan University Dept. of Science and Engineering Professor, 理工学部, 教授 (70026368)
SHIRAKAWA Hiromitsu Kinki University Dept. of Science and Engineering Professor, 理工学部, 教授 (80114164)
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| Project Period (FY) |
1991 – 1992
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| Project Status |
Completed (Fiscal Year 1992)
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| Budget Amount *help |
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1992: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1991: ¥4,000,000 (Direct Cost: ¥4,000,000)
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| Keywords | Operating System / Distributed System / Object-Oriented System / Real-Time System / Persistent Object / 分散オペレ-ティングシステム / 実時間システム / 軽量プロセス / 遠隔手続呼び出し / 並列プログラミング / マルチプロセッサ |
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| Research Abstract |
The distributed operating system Theta has been developed with the aim to support applications on distributed systems. Generally, operating systems handle many and various kinds of data structures, so their description has become complex and difficult. Using object oriented techniques and, by the abstraction of the system, their description and production are improved. The efficiency of a new version of Theta described by C++ and COB, with object oriented techniques, has been compared with its previous C version. The first aim of this research is to evaluate results of such comparison.
Concurrency and reliability are main issues of the distributed systems. Conventional distributed operating systems have been concerned only with concurrency. This is due to the fact that operating systems have not been used in distributed environments. On the other hand, distributed database systems had improved reliability. The second aim of this research is to apply those techniques to an operating system. Firstly, operating system is represented by objects. Secondly, those objects are realized by persistent objects. Thus the operating system can be composed by persistent objects, and persisteny operating system may be realized.
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