kingchencandGitHub
23d636fd97
Adds a Go binding (`bindings/go`) over the C ABI hub — the second language stecker after C#. ## What's here - **`bindings/go`** — a cgo binding exposing all 514 indicators as idiomatic Go types with `New<Indicator>` constructors and `Update`/`Batch`/`Reset`/`Close` methods. The wrappers in `indicators_gen.go` are generated from `bindings/c/include/wickra.h` (same archetype taxonomy as the C# generator: scalar/batch, multi-output, bars, profile, profile-values, array-input). Opaque handles are freed by `Close()` with a `runtime.SetFinalizer` backstop; pointer arguments are caller-owned, panics never cross the boundary. - **`examples/go`** — the full example suite mirroring C/C#: streaming, backtest, multi_timeframe, parallel_assets (goroutine fan-out), three strategies, and `fetch_btcusdt`/`live_binance`. - **CI** — a `go` job builds the C ABI library, stages it, and runs `gofmt`/`go vet`/`go test` plus the offline examples on Linux, macOS and Windows. - **Docs** — Go added to the README languages table, project layout, building/testing, CONTRIBUTING binding table + regenerate note, ARCHITECTURE, examples index, issue/PR templates, the About-description template, and the other binding READMEs. ## Linking / distribution The binding links the prebuilt C ABI library via cgo (`libwickra.so`/`.dylib`/`wickra.dll` staged under `bindings/go/lib`, gitignored). The native libraries are already shipped per target triple by the existing `c-abi-build` release job; distribution is via the subdirectory module tag `bindings/go/vX.Y.Z` (gated), so `release.yml` needs no new publish job. No Rust crate or `Cargo.toml` change — the Go module is standalone and additive. Not for merge yet (gated, per request).
55 lines
1.6 KiB
Markdown
55 lines
1.6 KiB
Markdown
---
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name: Performance regression
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about: Report a measurable slowdown, memory blowup, or throughput drop.
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title: "[Perf] <indicator / API> regressed in <version>"
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labels: ["performance", "regression", "triage"]
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assignees: []
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---
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## Summary
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<!-- Which code path got slower, by how much, and since when? -->
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## Affected code path
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- Indicator / API: `e.g. EMA.update`
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- Binding: `Rust / Python / Node / Wasm / C ABI / C# (.NET) / Go`
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- Hot loop or one-shot call?
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## Versions compared
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| Version | Throughput / latency / memory | Notes |
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| -------- | ----------------------------- | ----- |
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| `0.4.1` | `e.g. 12.3 ns/iter` | baseline (Good) |
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| `0.4.2` | `e.g. 38.7 ns/iter` | regressed |
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## Benchmark / reproducer
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<!--
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Paste the criterion / pytest-benchmark / hyperfine command and its output.
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For one-off measurements, include the timing snippet inline.
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-->
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```bash
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cargo bench --bench ema -- --save-baseline new
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```
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```
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ema/update time: [38.5 ns 38.7 ns 38.9 ns]
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change: [+213.4% +214.8% +216.1%] (p = 0.00 < 0.05)
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Performance has regressed.
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```
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## Hardware / environment
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| Field | Value |
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| ------------ | -------------------------------------- |
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| CPU | `e.g. Ryzen 9 9950X, AVX2 + AVX512` |
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| OS / arch | `e.g. Linux 6.8 x86_64` |
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| Toolchain | `rustc 1.x.y` |
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| Build flags | `RUSTFLAGS=...`, `--release`, profile |
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## Suspected cause
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<!-- Optional. Link the commit / PR if you've bisected it. -->
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