Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | ACM Digital Library |
|---|---|
| Author | Noël, Cyprien |
| Abstract | XSTM is a software transactional memory that can be extended by pluggable components. Extensions can access transactions read and write sets through an API, and process them e.g., for logging, change notification, state persistence or replication. This project explores ways to make memory transactions useful beyond thread synchronization. We describe in particular an application architecture enabled by extensions which aims to combine some of the strengths of shared state and of the Actor model. Shared state offers developers the modeling power of object orientation, and avoids the overhead of copying memory between components. The Actor model offers safety and composability when writing parallel and distributed applications. Our second design goal is to make memory transactions easy to reason about and safe to use. Opacity is achieved using a Multi Version Concurrency Control design where transactions are view-isolated, i.e., run in stable and consistent snapshots of the full memory. Transactions never encounter inconsistent data, do not abort while partially executed, and global progress is guaranteed. The programming model is further simplified by enforcing strong atomicity at the type system level, as transactional objects accessors require an ambient transaction. Finally, our design offers interesting performance characteristics by avoiding mutable shared state. Data is either mutable but private to a thread, or shared but immutable. This allows transactions to run without synchronization (no memory fence) between start and commit, which are themselves implemented in a lock-free way using O(1) memory fences and compare-and-swaps. We describe working implementations on the JVM and CLR for the STM and some extensions. |
| Starting Page | 23 |
| Ending Page | 34 |
| Page Count | 12 |
| File Format | |
| ISBN | 9781605589015 |
| DOI | 10.1145/1822327.1822331 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2010-05-19 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Software architecture Object replication Synchronization Concurrent programming Composability Transactional memory |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|