Runtime support for type-safe and context-based behavior adaptation

Zhu, Changpeng; Zhao, Yang; Han, Bo; Zeng, Qinghua; Ma, Ying

doi:10.1007/s11704-013-2337-6

Cited by 6 publications

(6 citation statements)

References 18 publications

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“…In order to support context awareness, object composition has been used to represent objects with some dynamic behaviors [7,17].…”

Section: Object Evolutionmentioning

confidence: 99%

“…An object evolution approach is proposed in [7]. e approach is based on composition and delegation while our approach is based on composition and proxy.…”

Section: Object Evolutionmentioning

confidence: 99%

“…It returns a method body of a method in a class. More details about it are shown in [7,12]. "predicate() true IN C L " represents the layer L that matches the current context while "predicate() false IN C L " represents the layer L that does not match.…”

Section: Definition 3 (Object Definitionmentioning

confidence: 99%

“…Virtual machine (VM), which has been considered as an intermediate layer between the executing application and the hardware [7], is widely used in big data process and analysis [8,9], as well as increasing the possibility for dynamic code evolution. Object proxy [10] is advocated as a flexible mechanism to dynamically adapt behavior of objects to adapt the behavior of a single object.…”

Section: Introductionmentioning

confidence: 99%

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An Object Proxy-Based Dynamic Layer Replacement to Protect IoMT Applications

Han

Zhao

Zhu

2019

Security and Communication Networks

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The Internet of medical things (IoMT) has become a promising paradigm, where the invaluable additional data can be collected by the ordinary medical devices when connecting to the Internet. The deep understanding of symptoms and trends can be provided to patients to manage their lives and treatments. However, due to the diversity of medical devices in IoMT, the codes of healthcare applications may be manipulated and tangled by malicious devices. In addition, the linguistic structures for layer activation in languages cause controls of layer activation to be part of program’s business logic, which hinders the dynamic replacement of layers. Therefore, to solve the above critical problems in IoMT, in this paper, a new approach is firstly proposed to support the dynamic replacement of layer in IoMT applications by incorporating object proxy into virtual machine (VM). Secondly, the heap and address are used to model the object and object evolution to guarantee the feasibility of the approach. After that, we analyze the influences of field access and method invocation and evaluate the risk and safety of the application when these constraints are satisfied. Finally, we conduct the evaluations by extending Java VM to validate the effectiveness of the proposal.

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“…In order to support context awareness, object composition has been used to represent objects with some dynamic behaviors [7,17].…”

Section: Object Evolutionmentioning

confidence: 99%

“…An object evolution approach is proposed in [7]. e approach is based on composition and delegation while our approach is based on composition and proxy.…”

Section: Object Evolutionmentioning

confidence: 99%

Section: Definition 3 (Object Definitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Object Proxy-Based Dynamic Layer Replacement to Protect IoMT Applications

Han

Zhao

Zhu

2019

Security and Communication Networks

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“…The virtual machine, which is considered as an intermediate layer between the executing application and the hardware [17], has been widely used in cloud computing. Live migration of a virtual machine refers to the transfer of a running VM over the network from one physical host to another.…”

Section: Introductionmentioning

confidence: 99%

A Queueing-Theory-Based Bandwidth Allocation Algorithm for Live Virtual Machine Migration

Zhu¹,

Han

Zhao

et al. 2015

2015 IEEE International Conference on Smart City/SocialCom/SustainCom (SmartCity)

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Live virtual machine migration has become a core system management tool to achieve load balancing and power saving among different servers. The recent studies mainly focus on the performance improvement for live VM migration. However, there has been little attention on the migration's impact on VMs co-located both source and destination servers during the migration. The impact, which is mainly caused by competition for sharing resources, lowers the real effect of live VM migration. To describe the real effect, we first use a weighted sum approach to formalize the performance of live VM migration and its impact. And then we use queueing theory to model the essential relationship between a VM's performance and it's residual bandwidth. Afterwards, based on the performance model, we propose a bandwidth allocation algorithm for live VM migration to minimize the sum. Our experiment results show our algorithm may improve the real effect of live VM migration by at most 71%, in comparison with the bandwidth allocation approach for live migration in QEMU/KVM.

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