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IWMM
1998
Springer

One-Bit Counts between Unique and Sticky

9 years 5 months ago
One-Bit Counts between Unique and Sticky
Stoye's one-bit reference tagging scheme can be extended to local counts of two or more via two strategies. The first, suited to pure register transactions, is a cache of referents to two shared references. The analog of Deutsch's and Bobrow's multiple-reference table, this cache is sufficient to manage small counts across successive assignment statements. Thus, accurate reference counts above one can be tracked for short intervals, like those bridging one function's environment to its successor's. The second, motivated by runtime stacks that duplicate references, avoids counting any references from the stack. It requires a local pointer-inversion protocol in the mutator, but one still local to the referent and the stack frame. Thus, an accurate reference count of one can be maintained regardless of references from the recursion stack. CCS categories and Subject Descriptors: D.4.2 [Storage Management]: Allocation/Deallocation strategies; E.2 [Data Storage Repr...
David J. Roth, David S. Wise
Added 06 Aug 2010
Updated 06 Aug 2010
Type Conference
Year 1998
Where IWMM
Authors David J. Roth, David S. Wise
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