SLPolyglotEngineValueExecuteBenchmark.java

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package com.oracle.truffle.sl.test;

import java.util.concurrent.TimeUnit;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;

import com.oracle.truffle.api.source.Source;
import com.oracle.truffle.api.vm.PolyglotEngine;
import com.oracle.truffle.sl.SLLanguage;
import com.oracle.truffle.sl.runtime.SLFunction;

@State(value = Scope.Benchmark)
@Warmup(iterations = 15)
@Measurement(iterations = 10)
@Fork(1)
public class SLPolyglotEngineValueExecuteBenchmark {

    private PolyglotEngine vm;
    private PolyglotEngine.Value plus;
    private SLFunction slFunction;

    @Setup
    public void prepare() {
        vm = PolyglotEngine.newBuilder().build();
        vm.eval(Source.newBuilder("function plus(x, y) { return x + y; }").name("plus.sl").mimeType(SLLanguage.MIME_TYPE).build());
        plus = vm.findGlobalSymbol("plus");
        slFunction = plus.as(SLFunction.class);
    }

    @Benchmark
    @OutputTimeUnit(TimeUnit.SECONDS)
    public long executePlus() {
        long res = plus.execute(1L, 2L).as(Number.class).longValue();
        if (res != 3) {
            throw new AssertionError();
        }
        return res;
    }

    @Benchmark
    @OutputTimeUnit(TimeUnit.SECONDS)
    public long executePlusDirectly() {
        long res = ((Number) slFunction.getCallTarget().call(new Object[]{1L, 2L})).longValue();
        if (res != 3) {
            throw new AssertionError();
        }
        return res;
    }
}