Java

FFM (Panama) over the C ABI — no JNI shim. Benchmark is AutoCloseable, so try-with-resources releases the native handle.

<dependency>
  <groupId>org.wickra</groupId>
  <artifactId>wickra-benchmark</artifactId>
  <version>0.1.0</version>
</dependency>

import org.wickra.benchmark.Benchmark;

try (Benchmark benchmark = new Benchmark()) {
    String response = benchmark.command(
        "{\"cmd\":\"run_case\",\"case\":" + caseJson + ",\"data\":" + candles + "}");
    System.out.println(Benchmark.version());
    System.out.println(response);
}

The command surface

Every binding exposes the same four commands and returns the core's canonical JSON string verbatim. That is what makes byte equality the cross-language check.

cmd	Payload	Response
run_case	{case, data}	a CaseResult — passed, hash_match, hash, recomputed
run_suite	{suite, datasets}	a SuiteReport — the results sorted by id, plus the tally
list_cases	{suite}	{"ids": [...]}, sorted
version	—	{"version": ..., "engine_version": ...}

A domain error — a malformed case, an unknown command — comes back in-band as {"ok":false,"error":...} rather than as an exception.

One committed example of every envelope lives in golden/commands/, with the exact response each must produce beside it in golden/expected/.

More

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