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Java virtual machine implementation method supporting multi-process

A technology of java virtual machine and implementation method, applied in the field of Java virtual machine supporting multi-process, to achieve the effects of reducing expenses, improving concurrency efficiency, and efficient switching speed

Inactive Publication Date: 2007-10-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some special cases, such as an environment without a host operating system, if multi-process concurrent execution is to be supported, the virtual machine must be responsible for process management.

Method used

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  • Java virtual machine implementation method supporting multi-process
  • Java virtual machine implementation method supporting multi-process
  • Java virtual machine implementation method supporting multi-process

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Embodiment Construction

[0033] 1) Process scheduling method

[0034] The process scheduler of the operating system is replaced by the java virtual machine, which is responsible for the scheduling of each process:

[0035] I, according to process three kinds of states in running: running, ready, wait, set up three kinds of process queues in Java virtual machine: running queue, ready queue, waiting queue.

[0036] Running state: A process is running when it occupies the processor;

[0037] Ready state: a process such as waiting to occupy the processor;

[0038] Waiting state: a process cannot execute until some event occurs, such as a disk operation;

[0039] Correspondingly, three process queues are established in the Java virtual machine: run queue, ready queue, and waiting queue. Among them, the process in the running queue is in the running state, and shares the CPU time slice according to the priority; the process in the ready queue is in the ready state, waiting to be put into the running queu...

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Abstract

The invention discloses a Java virtual machine realization method, which is characterized by the following: managing the integrated procedure in the Java virtual machine; switching the procedure dispatching; corresponding the procedure communication mechanism; controlling the internal memory to operate multiple Java procedures simultaneously; saving system resource; improving the procedure concurrent efficiency; reducing the dispatcher cost; fitting for inserted-type Java operation system.

Description

technical field [0001] The invention relates to a Java programming language and an operating system technology, to a Java program running realization technology, a scheduling switching technology and a process space allocation technology, in particular to a Java virtual machine method supporting multiple processes. Background technique [0002] The Java language is a cross-platform object-oriented high-level programming language launched by Sun Corporation. It is gaining more and more important status in various fields and has become one of the most important programming languages. [0003] The executable code of the Java language is a unified standard Java byte code (Byte Code) after compilation. As long as there is a Java virtual machine on a platform, all Java executable codes can run under the support of this Java virtual machine. Therefore, Java has excellent characteristics of cross-platform. [0004] Under the current Java virtual machine environment, there is no con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/46G06F9/455
Inventor 陈天洲戴红军叶敏娇胡威黄域
Owner ZHEJIANG UNIV
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