Specialized row decoders per type and pinned byte arrays - #49

Draft

mzabani wants to merge 35 commits into

pinned-byte-arrays

Commits on Aug 12, 2026

Faster Generically derived row decoders
mzabani
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d618b76
Add decoding offset to hopefully reduce ByteString allocations
mzabani
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668a3ed
Multiple-rows-at-once decoding
mzabani
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75c6d2c
Get rid of all ByteStrings during parsing
mzabani
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eeef5df
Special n>0 optimization makes no sense anymore
mzabani
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6ead147
Add comment on strictness
mzabani
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862c1f0
Slightly better (but not any faster) specialized row decoder
mzabani
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d39eaa9
Add a test for the FromPgMessage DataRow decoder
mzabani
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e9d01e1
Try a new kind of very specialized parser for small types
mzabani
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682125c
Post-rebase fixing
mzabani
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f6a80a5
More specialized instances, more confirmation of benefits
mzabani
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5c16f6b
Specialized instance for UTCTime => clear benefits once again
mzabani
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91aad56
Tidy up a bit
mzabani
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4b6e260

Commits on Aug 13, 2026

Slightly better understanding of inlining, clearer inlining boundaries
mzabani
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54ba650

Commits on Aug 14, 2026

Commits on Aug 15, 2026

Overlapping Maybe instances do help with the inlined row decoder's performance
mzabani
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3a44fb6

Commits on Aug 16, 2026

Very experimental change with `Maybe a` instances
mzabani
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84b7265

Commits on Aug 17, 2026

A separate field in FieldDecoder for what to decode NULL to
mzabani
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e5fc6e6

Commits on Aug 18, 2026

Try to improve the code, but inlining got worse
mzabani
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8a0684d

Commits on Aug 19, 2026

Commits on Aug 20, 2026

Trying a specialized notConst method
mzabani
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cf93810
Do the JSON types, but hpgsql-simple-compat will break
mzabani
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7eddecb

Commits on Aug 23, 2026

Create new strict and lazy ByteString-like PinnedByteArray types
mzabani
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63c1e97
Stop inlining aggressively in Generically derived row decoders, add another benchmark
mzabani
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3e8a092
Don't use inlined row decoders for Tuples
mzabani
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784d5cf
Update TODO
mzabani
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b4f37ab
Stop exposing performance-oriented FromPgField methods
mzabani
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19acd1d
Document why PinnedByteArray
mzabani
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e6efc73

Commits on Aug 24, 2026

Custom conversion from PinnedByteArray to Text
mzabani
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c9316c1