| 提高Ada并发效率的一种途径 |
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| 引用本文： | 赵恒,王振宇.提高Ada并发效率的一种途径[J].计算机应用与软件,2001,18(8):29-31,65. |
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| 作者姓名： | 赵恒 王振宇 |
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| 作者单位： | 武汉数字工程研究所,武汉,430074 |
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| 基金项目： | 国家自然科学基金(编号:69773041) |
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| 摘 要： | Ada的会合机制使我们能在高级语言一级上描述系统的并发活动，从而避免了在使用低级通信原语时所不可避免的问题。但由于会合机制是一种完全同步的实现机制，因此其并发效率较低。为此，本文提出：采用基于Ada保护对象的（异步）信箱机制实现Ada会合的服务模型，使之既具有会合机制的高可靠性，又能提高系统的并发度和实现效率。
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| 关 键 词： | Ada语言 并发程序设计 并发效率 软件系统 |
APPROACH TO IMPROVING Ada CONCURRENT EFFICIENCY |
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| Zhao Heng Wang Zhenyu.APPROACH TO IMPROVING Ada CONCURRENT EFFICIENCY[J].Computer Applications and Software,2001,18(8):29-31,65. |
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| Authors: | Zhao Heng Wang Zhenyu |
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| Abstract: | The rendezvous mechanism of Ada provides an advanced high level approach to task synchronization, which avoids the problems encountered by the use of low- level primitives,such as semaphores and signals. However, the rendezvous mechanism is reahzed in completely synchronized way so that its concurrent efficiency is lower than asynchronous message communication.An Ada protected object- based(asynchronous) mailbox mechanism is proposed to realize Ada rendezvous service model, which can improve the concurrent efficiency of Ada program and keep on the rendezvous model's reliability. |
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| Keywords: | Rendezvous mechanism Service model Protected object Mailbox |
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