leerho opened a new pull request, #674:
URL: https://github.com/apache/datasketches-java/pull/674
## Pull Request Overview
This PR continues migrating various packages to the Java FFM API by
replacing the legacy Memory/WritableMemory usage with MemorySegment and
PositionalSegment. It updates both implementation and test code across multiple
packages to use the new API.
### Sketch Families and helper classes moved to FFM Included in this PR:
* Sketch Families
* kll
* common/
* MemorySegmentRequest, replaces previous MemoryRequestServer.
* MemorySegmentRequestExtension, extends MemorySegmentRequest to allow
newly allocated MemorySegments to be off-heap. This can be used by the user
and as a working example of how to extend the MemorySegmentRequest.
* KllMemorySegmentRequestApp in the /test/.../kll package. This emulates
an application using an off-heap KLL sketch that needs to expand off-heap and
demonstrates one example of how to manage a growing off-heap KLL sketch where
the
* expanded MemorySegments are also off-heap.
### Sketch Families & helpers yet to migrate
* quantiles
## DONE! Sketch Families and helper classes moved to FFM by previous PRs
(alphabetical order):
- common/
- ArrayOf*SerDe (7 of them)
- positional/PositionalSegment (new, to model the DS-memory "buffer"
capability with MemorySegments)
- cpc
- fdt (does not use DS-memory)
- filters/bloomfilter
- frequencies
- hash (migrating individual classes as required to a "name"2 version)
- hll
- hllmap (does not use DS-memory)
- kll
- partitions (does not use DS-memory)
- quantilescommon (does not use DS-memory)
- sampling
- theta
- thetacommon
- tuple
- tuple/adouble
- tuple/aninteger
- tuple/arrayofdoubles
- tuple/strings
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