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2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)最新文献

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Interrupt Handlers in Java Java中的中断处理程序
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.68
Stephan Korsholm, Martin Schoeberl, A. Ravn
{"title":"Interrupt Handlers in Java","authors":"Stephan Korsholm, Martin Schoeberl, A. Ravn","doi":"10.1109/ISORC.2008.68","DOIUrl":"https://doi.org/10.1109/ISORC.2008.68","url":null,"abstract":"An important part of implementing device drivers is to control the interrupt facilities of the hardware platform and to program interrupt handlers. Current methods for handling interrupts in Java use a server thread waiting for the VM to signal an interrupt occurrence. It means that the interrupt is handled at a later time, which has some disadvantages. We present constructs that allow interrupts to be handled directly and not at a later point decided by a scheduler. A desirable feature of our approach is that we do not require a native middelware layer but can handle interrupts entirely with Java code. We have implemented our approach using an interpreter and a Java processor, and give an example demonstrating its use.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123828139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Efficient Metadata Management for Flash File Systems 高效的元数据管理的Flash文件系统
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.34
Jaegeuk Kim, Heeseung Jo, Hyotaek Shim, Jin-Soo Kim, S. Maeng
{"title":"Efficient Metadata Management for Flash File Systems","authors":"Jaegeuk Kim, Heeseung Jo, Hyotaek Shim, Jin-Soo Kim, S. Maeng","doi":"10.1109/ISORC.2008.34","DOIUrl":"https://doi.org/10.1109/ISORC.2008.34","url":null,"abstract":"NAND flash memory becomes one of the most popular storage for portable embedded systems. Although many flash-aware file systems, such as JFFS2 and YAFFS2, were proposed, the large memory consumption and the long mount delay have been serious obstacles for large-capacity NAND flash memory. In this paper, we present a new flash-aware file system called DFFS (direct flash file system) which fetches only the needed metadata on demand from flash memory. In addition, DFFS employs two novel metadata management schemes, inode embedding scheme and hybrid inode indexing scheme, to improve the performance of metadata operations. Comprehensive evaluation results using microbench- mark, postmark, and Linux kernel compilation trace, show that DFFS has comparable performance to JFFS2 and YAFFS2, while achieving a small memory footprint and instant mount time.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129311864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Towards Automatic Middleware Generation 实现中间件的自动生成
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.27
Bechir Zalila, L. Pautet, J. Hugues
{"title":"Towards Automatic Middleware Generation","authors":"Bechir Zalila, L. Pautet, J. Hugues","doi":"10.1109/ISORC.2008.27","DOIUrl":"https://doi.org/10.1109/ISORC.2008.27","url":null,"abstract":"Building middleware for distributed applications is a complex task, mixing antagonistic concerns: heterogeneity, performance, reliability, quality of services. Optimization and fine-tuning of middleware for a particular application is even a harder task, usually done manually or through complex design patterns. The advent of \"schizophrenic\" middleware which separates concerns between distribution model, communication protocols, and their implementation by refining the definition and role of \"personalities\" brought some elements to solve this problem by enabling full tailoring of the middleware by the developer. In this paper we extend this approach to full automation by generating middleware from an architectural model of the system expressed in a modeling language. This enables precise tuning and configuration of the middleware by generating exactly the required code, prior to runtime. We finally show how this approach fits the requirements of high-integrity or real-time distributed systems.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130975060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Lightweight Shadow Paging for Efficient Memory Isolation in Gandalf VMM 在Gandalf VMM中实现高效内存隔离的轻量级阴影分页
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.60
Megumi Ito, S. Oikawa
{"title":"Lightweight Shadow Paging for Efficient Memory Isolation in Gandalf VMM","authors":"Megumi Ito, S. Oikawa","doi":"10.1109/ISORC.2008.60","DOIUrl":"https://doi.org/10.1109/ISORC.2008.60","url":null,"abstract":"Demands are increasing for consolidating multiple OSes on a single multi-core CPU rather than using multiple sets of an OS and a CPU. A VMM enables multiple guest OSes to run concurrently on one CPU while providing separate security domains. We have developed Gandalf a lightweight VMM targeting embedded systems with multi-core CPUs. This paper focuses on the shadow paging mechanism of Gandalf which enables physical memory isolation among guest OSes by separating guest page tables from CPUs, because shadow paging significantly affects VMM overheads and is a key to make a VMM lightweight. We designed and implemented two models of shadow paging, single shadow model and multiple shadow model. The measurement results show that they are realized lightweight.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130854305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Responsive Fault-Tolerant Computing in the Era of Terascale Integration State of Art Report Terascale集成时代的响应式容错计算最新技术报告
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.42
P. Ezhilchelvan
{"title":"Responsive Fault-Tolerant Computing in the Era of Terascale Integration State of Art Report","authors":"P. Ezhilchelvan","doi":"10.1109/ISORC.2008.42","DOIUrl":"https://doi.org/10.1109/ISORC.2008.42","url":null,"abstract":"Scaling in hardware integration process results in IC-process geometry reductions, lower operating voltages and increased clock speeds. This paper first surveys the reliability obstacles these developments give rise to and then points out that computing systems can no longer be safely assumed to fail only by crashing. Yet this assumption is at the core of primary-backup replication which the literature presents as the appropriate, and hence the most widely used, strategy for time-critical fault-tolerant applications. The paper then observes that building computing nodes with announced crash failure mode is a promising way forward to deal with the emerging reliability challenges. Work carried out to assure such a failure mode has also been briefly surveyed.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129297876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
GenERTiCA: A Tool for Code Generation and Aspects Weaving GenERTiCA:用于代码生成和方面编织的工具
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.67
M. A. Wehrmeister, E. P. Freitas, C. Pereira, F. Rammig
{"title":"GenERTiCA: A Tool for Code Generation and Aspects Weaving","authors":"M. A. Wehrmeister, E. P. Freitas, C. Pereira, F. Rammig","doi":"10.1109/ISORC.2008.67","DOIUrl":"https://doi.org/10.1109/ISORC.2008.67","url":null,"abstract":"Model-driven design (MDD) can be perceived in the recent literature as an option to deal with the increasing complexity of the design of distributed embedded real-time systems (DERTS). This paper reports some results of a research project aiming to support a MDD approach, which applies concepts of the aspect-oriented (AO) paradigm in order to improve the treatment of non-functional requirements (NFR) in the design of DERTS. A tool named GenERTiCA, which generates source code from UML diagrams and also weaves aspect adaptations, has been developed to support such MDD/AO approach. This paper presents results regarding the use of GenERTiCA to generate code and implement aspects (from a high-level framework of aspect) for the RT-FemtoJava platform, a RTSJ-based and optimized Java platform for DERTS.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114698627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 45
Compositional Feasibility Analysis of Conditional Real-Time Task Models 条件实时任务模型的组成可行性分析
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.47
M. Anand, A. Easwaran, S. Fischmeister, Insup Lee
{"title":"Compositional Feasibility Analysis of Conditional Real-Time Task Models","authors":"M. Anand, A. Easwaran, S. Fischmeister, Insup Lee","doi":"10.1109/ISORC.2008.47","DOIUrl":"https://doi.org/10.1109/ISORC.2008.47","url":null,"abstract":"Conditional real-time task models, which are generalizations of periodic, sporadic, and multi-frame tasks, represent real world applications more accurately. These models can be classified based on a tradeoff in two dimensions - expressivity and hardness of schedulability analysis. In this work, we introduce a class of conditional task models and derive efficient schedulability analysis techniques for them. These models are more expressive than existing models for which efficient analysis techniques are known. In this work, we also lay the groundwork for schedulability analysis of hierarchical scheduling frameworks with conditional task models. We propose techniques that abstract timing requirements of conditional task models, and support compositional analysis using these abstractions.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114709768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
MRBAC: Hierarchical Role Management and Security Access Control for Distributed Multimedia Systems 分布式多媒体系统的分级角色管理和安全访问控制
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.41
Na Zhao, Min Chen, Shu‐Ching Chen, M. Shyu
{"title":"MRBAC: Hierarchical Role Management and Security Access Control for Distributed Multimedia Systems","authors":"Na Zhao, Min Chen, Shu‐Ching Chen, M. Shyu","doi":"10.1109/ISORC.2008.41","DOIUrl":"https://doi.org/10.1109/ISORC.2008.41","url":null,"abstract":"In this paper, a role-based access control (KBAC) model is applied and extended to a multimedia version called multi-role based access control (MRBAC), which can fully support the comprehensive and multilevel security control requirements of the distributed multimedia applications. The object-oriented concept is adopted in MRBAC to perform the hybrid role hierarchy management and security roles and rules administration. In summary, MRBAC can: 1) support the multi-level security protection for multimedia data; 2) provide access control by checking both the time constrains and IP addresses; and 3) decentralize the administration functions to make the access control management more efficient.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124305973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A Hierarchical Resource Management Scheme Enabled by the TMO Programming Scheme TMO编程方案支持的分层资源管理方案
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.86
K. Kim, Yuqing Li, K. Rim, E. Shokri
{"title":"A Hierarchical Resource Management Scheme Enabled by the TMO Programming Scheme","authors":"K. Kim, Yuqing Li, K. Rim, E. Shokri","doi":"10.1109/ISORC.2008.86","DOIUrl":"https://doi.org/10.1109/ISORC.2008.86","url":null,"abstract":"For cost-effective realization of sizable realtime distributed computing application systems, significant advances in resource allocation are in critical needs. An advanced practical scheme for high-level programming of real-time distributed computing software such as the TMO (Time-triggered Message-triggered Object) scheme introduces the potential for realizing new improved resource allocation approaches. The main reason is because it provides information-rich intuitively appealing timing specifications. However, to properly exploit the potential, a number of issues need to be resolved via extensive research involving both analytical and experimental efforts. A hierarchical resource allocation scheme that becomes enabled by use of the TMO programming model is discussed along with the remaining research issues.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133774873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
XML Profile for Distributed Real Time Systems 分布式实时系统的XML配置文件
2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC) Pub Date : 2008-05-05 DOI: 10.1109/ISORC.2008.62
P. Poon, T. Dillon, E. Chang, Ling Feng
{"title":"XML Profile for Distributed Real Time Systems","authors":"P. Poon, T. Dillon, E. Chang, Ling Feng","doi":"10.1109/ISORC.2008.62","DOIUrl":"https://doi.org/10.1109/ISORC.2008.62","url":null,"abstract":"In this paper, we describe a XML based profile for modeling the semantics of real time systems. We aim to use Real Time Markup Language (RTML) to provide a comprehensive description of temporal properties for the use in distributed systems communication. RTML is derived from a number of specifications including OMG UML Profile in Schedulability, Performance, and Time. In this paper, we discuss the technique that was used to develop RTML semantic model and the important concepts in RTML.","PeriodicalId":378715,"journal":{"name":"2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115118784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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