diff --git a/playground/ivm/index.js b/playground/ivm/index.js new file mode 100644 index 000000000000..8c07993edbd1 --- /dev/null +++ b/playground/ivm/index.js @@ -0,0 +1,67 @@ +// bench.js +import ivm from 'isolated-vm'; +import { performance } from 'perf_hooks'; + +// This is the same transformation code used in index.js. +// It registers a global `transform` function that takes an object, +// adds an "id" attribute with a random UUID, and returns the object. +const transformationCode = ` + global.transform = function(input) { + function generateUUID() { + return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => { + const r = Math.random() * 16 | 0; + const v = (c === 'x') ? r : (r & 0x3 | 0x8); + return v.toString(16); + }); + } + input.id = generateUUID(); + return input; + }; +`; + +async function setup() { + // Create an isolate with an 8 MB memory limit + const isolate = new ivm.Isolate({ memoryLimit: 8 }); + const context = isolate.createContextSync(); + const jail = context.global; + // Make the global object available in the isolate (derefInto() helps produce a plain object) + await jail.set("global", jail.derefInto()); + // Compile and run the transformation code so that `transform` is registered + const script = isolate.compileScriptSync(transformationCode); + script.runSync(context); + // Retrieve the 'transform' function as a reference + const transformFn = context.global.getSync("transform", { reference: true }); + return { isolate, transformFn }; +} + +async function benchmark(iterations) { + const { isolate, transformFn } = await setup(); + const input = { name: "john" }; + + let transformedOutput; + // Warm-up phase (and capturing transformation result) + for (let i = 0; i < 100; i++) { + const externalInput = new ivm.ExternalCopy(input).copyInto(); + transformedOutput = transformFn.applySync(undefined, [externalInput], { result: { copy: true } }); + } + + console.log("Transformed sample:", JSON.stringify(transformedOutput, null, 2)); + + // Benchmark loop + const start = performance.now(); + for (let i = 0; i < iterations; i++) { + const externalInput = new ivm.ExternalCopy(input).copyInto(); + // Capture transformation result on each iteration if needed: + transformedOutput = transformFn.applySync(undefined, [externalInput], { result: { copy: true } }); + } + const end = performance.now(); + const totalTime = end - start; + console.log(`Total time for ${iterations} iterations: ${totalTime.toFixed(2)} ms`); + console.log(`Average time per transformation: ${(totalTime / iterations).toFixed(4)} ms`); + + // Clean up + isolate.dispose(); +} + +// Change the number of iterations as needed. +benchmark(10000).catch(console.error); \ No newline at end of file diff --git a/playground/ivm/package-lock.json b/playground/ivm/package-lock.json new file mode 100644 index 000000000000..46b8794dd3ed --- /dev/null +++ b/playground/ivm/package-lock.json @@ -0,0 +1,450 @@ +{ + "name": "ivm", + "version": "1.0.0", + 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