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清华大学学报:自然科学英文版 |
| Class-Based Garbage Collection in Object-Oriented Programming Environments清华大学学报:自然科学英文版论文 |
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【题名】:Class-Based Garbage Collection in Object-Oriented Programming Environments清华大学学报:自然科学英文版论文(Class-Based Garbage Collection in Object-Oriented Programming EnvironmentsQingHuaDaXueXueBao:ZiRanKeXueYingWenBanLunWen) 【关键词】:无用数据回收算法 高速缓冲存储器 完整性 安全性 【keywords】:WuYongShuJuHuiShouSuanFa GaoSuHuanChongCunChuQi WanZhengXing AnQuanXing 【作者】:张武生 黄启峰 沈美明 郑纬民 【来源】: 知识词典 【期刊名称】:清华大学学报:自然科学英文版(QingHuaDaXueXueBao:ZiRanKeXueYingWenBan) 【国际标准刊号】:1007-0214 【国内统一刊号】:11-3745 【作者单位】:DepartmentofComputerScienceandTechnology,TsinghuaUniversity,Beijing100084,China(DepartmentofComputerScienceandTechnology,TsinghuaUniversity,Beijing100084,China) 【分类号】:TP333 【页码】:-658-666 【出版年】:2003.6 【下载地址】:下载pdf全文 Many garbage collection algorithms have been proposed, but few address the special needs of long-running server programs. Server applications usually run for years and spawn many threads, so they create and discard thousands of objects. Therefore, efficient garbage collection is especially important for those applications. This paper presents a class-based garbage collector for object-oriented programming environments that classifies objects by their types to achieve better gradualness. Grouping objects of the same type into a group, with a limited type-lock, a mutator cache and the lease protocol will reduce memory fragmentation, which is especially important for the efficiency of long-running server applications. This class-based collector partitions the heap space by type, which provides better concurrency than the traditional mark-sweep collector, and its reusable garbaged object pool also reduces the object allocation overhead. This paper also discusses the implementation details, such as the mutator cache and the lease protocol, and techniques to achieve better accuracy.
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