NDLI: Optimizing object reference checks on real-time Java virtual machine

Content Provider	IEEE Xplore Digital Library
Author	Wei Feng Xiaohua Shi Hengyang Yu
Copyright Year	2015
Description	Author affiliation: Sch. of Comput. Sci. & Eng., Beihang Univ., Beijing, China (Wei Feng; Xiaohua Shi; Hengyang Yu)
Abstract	Thanks to Real-Time Specification for Java (RTSJ), Java now can be applied in real-time systems. However, in RTSJ's memory management system, assignment rules which aimed to prevent the creation of dangling references must be checked by real-time Java virtual machines (JVMs) at runtime. These frequent runtime object reference checks lead to additional time overhead and unpredictable running time, which has great impact on real-time systems. This paper presents an equivalence class based, context sensitive and flow insensitive escape analysis algorithm which could eliminate unnecessary runtime reference checkpoints. This optimization framework has been implemented in an open-source real-time JVM jRate 0.3.7.2-3.3.3 and evaluated by $CD_{x},$ a relative authority real-time Java benchmark suite. The results show that this optimization algorithm eliminates 94.92% static reference checkpoints, on average removes 42.28%~54.44% runtime reference checkpoints, and improves the runtime performance of average 3.13%, max 8.93%.
Starting Page	77
Ending Page	80
File Size	118065
Page Count	4
File Format	PDF
ISBN	9781479983520
ISSN	23270594
e-ISBN	9781479983537
DOI	10.1109/ICSESS.2015.7339009
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Java Runtime Memory management Real-time systems Virtual machining Real-time Java virtual machine Escape analysis Object reference check Optimization RTSJ
Content Type	Text
Resource Type	Article

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