feat(java): optimize json perf#3871
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chaokunyang wants to merge 9 commits into
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pandalee99
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Jul 17, 2026
pandalee99
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Jul 17, 2026
Route complete codec and generated member-group calls through shared polymorphic trampoline sites so C2 cannot recursively absorb the full writer graph while group-local scalar calls still inline.\n\nOpenJDK 25 JsonSerializationSuite.foryToJsonBytes: 10.317M ops/s, 504.000 B/op. Full fory-json suite: 742 tests passed.
Keep handwritten and root codec dispatch direct, and let generated object writers choose shared C2 boundaries from representation-aware resolved subtree cost. JDK 25 MediaContent: UTF-8 10.440M -> 10.502M ops/s at 504 B/op; String 6.916M -> 6.982M ops/s at 528 B/op. The Users/Clients serialization screen had no regression over 1%. All 743 fory-json tests, Spotless, and Checkstyle pass.
Keep large generated read/write subtrees behind codegen-owned call boundaries, let generated roots own eligible object collection loops, and preserve compact Latin1 string leaves behind a real medium writer boundary. Handwritten codecs, readers, writers, and roots remain direct. JDK 25 Users 1000KB serialization: Fory 11,887.815 ops/s vs Wast 10,714.921 ops/s (+10.95%), with effectively zero allocation. Full Java reactor and fory-json tests pass; Spotless and Checkstyle pass.
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