| 一种高效的垃圾收集器CCone |
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| 引用本文： | 王伟,杨克峤,周寻,曹志伟,杨珉.一种高效的垃圾收集器CCone[J].小型微型计算机系统,2010,31(2). |
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| 作者姓名： | 王伟 杨克峤 周寻 曹志伟 杨珉 |
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| 作者单位： | 复旦大学,并行处理研究所,上海201203 |
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| 摘 要： | 为提高堆空间的利用率,许多垃圾收集器在标记扫描对象后加入"压缩"过程,主要有"标记-压缩"和"拷贝"两类垃圾收集器.垃圾收集时需要暂停程序的运行,为了减少这种时间开销,基于"拷贝"算法,垃圾收集器CCone在一次堆遍历中完成压缩过程和引用更新过程,而现有的算法至少需要两遍.此外,CCone基于"拷贝"算法充分利用多核和多线程技术,以页为单位,利用多线程启动多个垃圾收集器对堆空间进行垃圾回收.性能测试表明并行的CCone相比较传统的压缩垃圾收集器在吞吐量上有超过10%的提升,而由算法带来的开销可以忽略不计.
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| 关 键 词： | 垃圾收集器(GC) 标记清除 |
CCone :Highly Effective Garbage Collector |
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| WANG Wei,YANG Ke-qiao,ZHOU Xun,CAO Zhi-wei,YANG Min.CCone :Highly Effective Garbage Collector[J].Mini-micro Systems,2010,31(2). |
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| Authors: | WANG Wei YANG Ke-qiao ZHOU Xun CAO Zhi-wei YANG Min |
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| Affiliation: | WANG Wei,YANG Ke-qiao,ZHOU Xun,CAO Zhi-wei,YANG Min(Parallel Processing Institute,Fudan University,Shanghai 200433,China) |
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| Abstract: | Compact processing is introduced by various garbage collectors in order to improve the usability of heap,such as Mark Compact and Copying Compact. However,it is a high overhead to stop the world for collecting garbage. Our garbage collector -CCone enhances the copying compact algorithm by combining two heap passes to one pass,reducing time overhead. In addition,CCone utilizes the multi-threads technology allowing many garbage collectors to complete the collecting task simultaneously. The experimental result... |
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| Keywords: | Harmony garbage collector mark sweep harmony |
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