Abstract: To improve Dalvik virtual machine performance, a hybrid concurrent model based on multi-thread mechanism for Java virtual machine was proposed. This model implemented performance optimization by overlapping the production of native code with program execution through multi-thread control and hot-function table, and some critical issues in the design and implementation were also discussed. The experimental results show that this model can improve the Java execution speed efficiently in Dalvik.

Key words: Dalvik virtual machine, multi-thread, hybrid concurrent, performance optimization

摘要： 为了改进Dalvik虚拟机的性能，提出了一种基于多线程调度机制的Java虚拟机混合并发模式。该模式利用多线程并发调度和热方法表，通过将Java字节码的编译与执行过程相重叠来提高程序的执行效率，进而提升Dalvik虚拟机的处理速度；并对该模式设计与实现的关键技术进行了分析。实验结果表明，混合并发模式能够有效地提高Dalvik虚拟机中Java程序的执行速度。

关键词: Dalvik虚拟机, 多线程, 混合并发, 性能优化