ff1ce60f
c_runtime: decode_unsafe(plan, buf) entrypoint, skip_utf8 gate on dec_ctx (kyt)
Before this change, M.<Msg>_decode_unsafe stayed on the inline Lua path even when PB_ENABLE_C=1, because c_runtime.decode validated UTF-8 unconditionally. Now both safe and unsafe decoders dispatch to the C runtime; the unsafe path calls c_runtime.decode_unsafe, which sets dec_ctx.skip_utf8 and gates the is_valid_utf8 call on every PB_KIND_STRING payload across the decode tree. pb.decode_unsafe in init.lua mirrors pb.decode: tries desc.c_plan first, falls back to the pure-Lua decode_msg_unsafe. Full-mode codegen emits the same pb.c_runtime check at the unsafe prologue. Perf on string-heavy Person (418B, 16 emails + 16 nicknames): Lua unsafe 142 MB/s C safe 364 MB/s C unsafe 455 MB/s (+25% over C-safe, 3.2x over Lua-unsafe) Suites: test 766/766, test-c 1057/1057, examples all green.
Eugene Blikh <bigbes@gmail.com> — 2026-05-24 19:48:47 UTC
Commit ff1ce60f7c0d09476ff860eded449af87071fb66 —
view raw patch
Parent(s):
e3f06741
| File | Status | + | − |
|---|---|---|---|
.beads/issues.jsonl
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M | +2 | -2 |
cmd/protoc-gen-tarantool/internal/gen/inline.go
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M | +10 | -10 |
examples/expected/full/c_int64/c_int64_pb.lua
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M | +4 | |
examples/expected/full/c_nested/c_nested_pb.lua
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M | +20 | |
examples/expected/full/c_repeated/c_repeated_pb.lua
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M | +8 | |
examples/expected/full/conformance/conformance_pb.lua
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M | +20 | |
examples/expected/full/hello/hello_pb.lua
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M | +24 | |
examples/expected/full/proto2_basic/proto2_basic_pb.lua
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M | +40 | |
examples/expected/full/protobuf_test_messages/proto2/test_messages_proto2_pb.lua
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M | +84 | |
examples/expected/full/protobuf_test_messages/proto3/test_messages_proto3_pb.lua
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M | +20 | |
examples/expected/full/quickstart/quickstart_pb.lua
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M | +4 | |
runtime/pb/c/c_runtime.c
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M | +36 | -7 |
runtime/pb/init.lua
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M | +23 | -13 |