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    • 9. 发明授权
    • Method, system and computer program product for batched virtual memory remapping for efficient garbage collection of large object areas
    • 用于批量虚拟内存重映射的方法,系统和计算机程序产品,用于大型对象区域的高效垃圾收集
    • US08327111B2
    • 2012-12-04
    • US12413661
    • 2009-03-30
    • Holly Katherine CumminsAnthony PhillipsAndrew Dean Wharmby
    • Holly Katherine CumminsAnthony PhillipsAndrew Dean Wharmby
    • G06F12/08G06F12/00
    • G06F12/0253
    • A method, system and computer program product for batched remapping of virtual memory addresses for garbage collection in a large object area. A mapping from a table having a first set of virtual memory addresses and sizes of non-contiguous, page-aligned large objects in a large object area to a remapping table having a second set of virtual memory addresses is determined. In a single batch, a request is received that includes the second set of virtual addresses and requests a remapping of the large objects to the second set of virtual memory addresses. The second set of virtual memory addresses is validated, and the large objects are remapped to the second set of virtual memory addresses according to the request. The remapping results in a compaction so that the large objects are contiguous in the large object area. The remapping does not require copying data in physical memory.
    • 一种方法,系统和计算机程序产品,用于在大对象区域中进行垃圾收集的虚拟内存地址的重新映射。 确定具有第一组虚拟存储器地址和大对象区域中不连续的页对齐的大对象的大小的表与具有第二组虚拟存储器地址的重映射表的映射。 在单个批次中,接收到包括第二组虚拟地址集的请求,并请求将大对象重新映射到第二组虚拟存储器地址。 验证第二组虚拟内存地址,并根据请求将大对象重新映射到第二组虚拟内存地址。 重新映射导致压缩,使得大对象在大对象区域中是连续的。 重映射不需要在物理内存中复制数据。