performance-tests/shared_pthread.js

export async function setupWebAssembly( wasmBuffer, workerData, arraySize, threadCount ) {

    const { start, end, sabA, sabB, sabC } = workerData;

    var sizePerThread 	= arraySize / threadCount;

	// const a = new Float32Array(sabA);
    //const b = new Float32Array(sabB);
    //const c = new Float32Array(sabC);

   
    const memory = new WebAssembly.Memory({
        initial: 2747, // ~172 MB
        maximum: 4096,  // ~256 MB
        shared: true
    });


    const { instance } = await WebAssembly.instantiate( wasmBuffer, {
        env: {
            memory: memory,
            emscripten_notify_memory_growth: (index) => {
                // This function is called when the WASM module wants to grow memory.
                // You can log it or handle it as needed.
                console.log(`Memory grew to ${index / 65536} pages`);
            },

        }
    });

    const ARRAY_SIZE = 15000576;
    const a = instance.exports.alloc_float_array(sizePerThread);
    const b = instance.exports.alloc_float_array(sizePerThread);
    const c = instance.exports.alloc_float_array(sizePerThread);
    
    //if (!a || !b || !c) throw new Error("Failed to allocate memory");

/*
    // Benchmark initialization
    const initStart = performance.now();

    instance.exports.init_arrays_range(a, b);

    const initTime = performance.now() - initStart;

    // Benchmark calculation
    const calcStart = performance.now();

    instance.exports.calculate(a, b, c);

    const calcTime = performance.now() - calcStart;


    console.log(`Array initialization time: ${initTime.toFixed(3)} ms`);

    console.log(`Calculation time:          ${calcTime.toFixed(3)} ms`);

    console.log(`Total time:               ${(initTime + calcTime).toFixed(3)} ms`);

    // Sample output
    const mem = new Float32Array(instance.exports.memory.buffer);

    for (let i = 0; i < 10; i++) {

        console.log(`c[${i}] = ${mem[c/4 + i]}`);

    }

    // Clean up
    instance.exports.dealloc_float_array(a);
    instance.exports.dealloc_float_array(b);
    instance.exports.dealloc_float_array(c);
    */
}