Space-limited marking structure for tracing garbage collectors
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United States of America Patent
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Nov 6, 2001
Issued Date -
N/A
app pub date -
Oct 13, 1998
filing date -
Oct 14, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A data processing method and apparatus are described for tracing paths through stored data structures defined by data objects coupled by identifying pointers and within a contiguous area of memory. A fixed sized marking stack or queue builds up a list of located objects as the structure or structures are traversed. The contiguous memory is divided into discrete pages with the linked data objects within each being considered in turn: any link to an object in another page causes an identifier for that page to be entered in a page list if one does not already exist, and a page table for each page identifies the location of the first and last identified objects within a page to set a range for subsequent scanning.
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