Active Memory Processor: A Hardware Garbage Collector for Real-Time Java Embedded Devices.
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| Title: | Active Memory Processor: A Hardware Garbage Collector for Real-Time Java Embedded Devices. |
|---|---|
| Authors: | Srisa-an, Witawas, Chia-Tien Dan Lo, Chang, Ji-en Morris |
| Source: | IEEE Transactions on Mobile Computing. Apr-Jun2003, Vol. 2 Issue 2, p89. 13p. 3 Black and White Photographs, 8 Diagrams, 9 Charts, 8 Graphs. |
| Subjects: | Java programming language software, Embedded computer systems, Equipment & supplies |
| Abstract: | Java possesses many advantages for embedded system development, including fast product deployment, portability, security, and a small memory footprint. As Java makes inroads into the market for embedded systems, much effort is being invested in designing real-time garbage collectors. The proposed garbage-collected memory module, a bitmap-based processor with standard DRAM cells is introduced to improve the performance and predictability of dynamic memory management functions that include allocation, reference counting, and garbage collection. As a result, memory allocation can be done in constant time and sweeping can be performed in parallel by multiple modules. Thus, constant time sweeping is also achieved regardless of heap size. This is a major departure from the software counterparts where sweeping time depends largely on the size of the heap. In addition, the proposed design also supports limited-field reference counting, which has the advantage of distributing the processing cost throughout the execution. However, this cost can be quite large and results in higher power consumption due to frequent memory accesses and the complexity of the main processor. By doing reference counting operation in a coprocessor, the processing is done outside of the main processor. Moreover, the hardware cost of the proposed design is very modest (about 8,000 gates). Our study has shown that 3-bit reference counting can eliminate the need to invoke the garbage collector in all tested applications. Moreover, it also reduces the amount of memory usage by 77 percent. [ABSTRACT FROM AUTHOR] |
| Copyright of IEEE Transactions on Mobile Computing is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 10395109 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Active Memory Processor: A Hardware Garbage Collector for Real-Time Java Embedded Devices. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Srisa-an%2C+Witawas%22">Srisa-an, Witawas</searchLink><br /><searchLink fieldCode="AR" term="%22Chia-Tien+Dan+Lo%22">Chia-Tien Dan Lo</searchLink><br /><searchLink fieldCode="AR" term="%22Chang%2C+Ji-en+Morris%22">Chang, Ji-en Morris</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Mobile+Computing%22">IEEE Transactions on Mobile Computing</searchLink>. Apr-Jun2003, Vol. 2 Issue 2, p89. 13p. 3 Black and White Photographs, 8 Diagrams, 9 Charts, 8 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Java+programming+language+software%22">Java programming language software</searchLink><br /><searchLink fieldCode="DE" term="%22Embedded+computer+systems%22">Embedded computer systems</searchLink><br /><searchLink fieldCode="DE" term="%22Equipment+%26+supplies%22">Equipment & supplies</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Java possesses many advantages for embedded system development, including fast product deployment, portability, security, and a small memory footprint. As Java makes inroads into the market for embedded systems, much effort is being invested in designing real-time garbage collectors. The proposed garbage-collected memory module, a bitmap-based processor with standard DRAM cells is introduced to improve the performance and predictability of dynamic memory management functions that include allocation, reference counting, and garbage collection. As a result, memory allocation can be done in constant time and sweeping can be performed in parallel by multiple modules. Thus, constant time sweeping is also achieved regardless of heap size. This is a major departure from the software counterparts where sweeping time depends largely on the size of the heap. In addition, the proposed design also supports limited-field reference counting, which has the advantage of distributing the processing cost throughout the execution. However, this cost can be quite large and results in higher power consumption due to frequent memory accesses and the complexity of the main processor. By doing reference counting operation in a coprocessor, the processing is done outside of the main processor. Moreover, the hardware cost of the proposed design is very modest (about 8,000 gates). Our study has shown that 3-bit reference counting can eliminate the need to invoke the garbage collector in all tested applications. Moreover, it also reduces the amount of memory usage by 77 percent. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of IEEE Transactions on Mobile Computing is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1109/TMC.2003.1217230 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 89 Subjects: – SubjectFull: Java programming language software Type: general – SubjectFull: Embedded computer systems Type: general – SubjectFull: Equipment & supplies Type: general Titles: – TitleFull: Active Memory Processor: A Hardware Garbage Collector for Real-Time Java Embedded Devices. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Srisa-an, Witawas – PersonEntity: Name: NameFull: Chia-Tien Dan Lo – PersonEntity: Name: NameFull: Chang, Ji-en Morris IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr-Jun2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 15361233 Numbering: – Type: volume Value: 2 – Type: issue Value: 2 Titles: – TitleFull: IEEE Transactions on Mobile Computing Type: main |
| ResultId | 1 |
