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由 Peter Dillinger 提交于
Summary: With expected use for a 128-bit hash, xxhash library is upgraded to current dev (2c611a76f914828bed675f0f342d6c4199ffee1e) as of Aug 6 so that we can use production version of XXH3_128bits as new Hash128 function (added in hash128.h). To make this work, however, we have to carve out the "preview" version of XXH3 that is used in new SST Bloom and Ribbon filters, since that will not get maintenance in xxhash releases. I have consolidated all the relevant code into xxph3.h and made it "inline only" (no .cc file). The working name for this hash function is changed from XXH3p to XXPH3 (XX Preview Hash) because the latter is easier to get working with no symbol name conflicts between the headers. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8634 Test Plan: no expected change in existing functionality. For Hash128, added some unit tests based on those for Hash64 to ensure some basic properties and that the values do not change accidentally. Reviewed By: zhichao-cao Differential Revision: D30173490 Pulled By: pdillinger fbshipit-source-id: 06aa542a7a28b353bc2c865b9b2f8bdfe44158e4
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