Horton

Re: Change GUC hashtable to use simplehash?

John Naylor <johncnaylorls@gmail.com>

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From: John Naylor <johncnaylorls@gmail.com>
To: Junwang Zhao <zhjwpku@gmail.com>
Cc: jian he <jian.universality@gmail.com>, Jeff Davis <pgsql@j-davis.com>, Andres Freund <andres@anarazel.de>, Tom Lane <tgl@sss.pgh.pa.us>, Gurjeet Singh <gurjeet@singh.im>, pgsql-hackers@postgresql.org
Date: 2024-01-17T07:15:11Z
Lists: pgsql-hackers

Commits

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  1. Silence warning in older versions of Valgrind

  2. Revert "Speed up tail processing when hashing aligned C strings, take two"

  3. Speed up tail processing when hashing aligned C strings, take two

  4. Teach fasthash_accum to use platform endianness for bytewise loads

  5. Add macro to disable address safety instrumentation

  6. Convert uses of hash_string_pointer to fasthash equivalent

  7. Speed up tail processing when hashing aligned C strings

  8. Add helper functions for dshash tables with string keys.

  9. Fix warnings in cpluspluscheck

  10. Further cosmetic review of hashfn_unstable.h

  11. Simplify initialization of incremental hash state

  12. Add optimized C string hashing

  13. Add inline incremental hash functions for in-memory use

  14. Make all Perl warnings fatal

Attachments

I spent some time rewriting the comments and a couple other cosmetic
changes, and squashed into two patches: the second one has the
optimized string hashing. They each have still just one demo use case.
It looks pretty close to commitable, but I'll leave this up for a few
days in case anyone wants to have another look.

After this first step is out of the way, we can look into using this
more widely, including dynahash and the GUC hash.