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A study of lock-free based concurrent garbage collectors for multicore platform
1School of Computer Science and Technology, Harbin Institute of Technology, Harbin 150001, China.
Thescientificworldjournal
|August 6, 2014
Summary
This study introduces a novel lock-free concurrent garbage collector for multicore systems. The new design enhances runtime efficiency by avoiding blocking during garbage collection, achieving competitive performance.
Area of Science:
- Computer Science
- Software Engineering
Background:
- Concurrent garbage collectors (CGC) are crucial for multicore systems.
- Existing lock-based algorithms hinder scalability.
Purpose of the Study:
- To develop a highly concurrent, lock-free garbage collector.
- To improve runtime system efficiency on multicore platforms.
Main Methods:
- Investigated stack scanning and heap compaction.
- Implemented a lock-free solution using Compare-And-Swap/Multiple Compare-And-Swap (CAS/MCAS) primitives.
- Ensured non-blocking garbage collection.
Main Results:
- The proposed lock-free approach avoids blocking collector threads.
- Achieved competitive performance compared to existing methods.
- Demonstrated improved efficiency by leveraging multicore resources.
Conclusions:
- Lock-free CGC design is feasible and effective.
- CAS/MCAS primitives are suitable for high-concurrency garbage collection.
- The approach offers a scalable solution for modern multicore architectures.
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