1 files changed, 99 insertions, 0 deletions
diff --git a/benchmark/napi/function_args/index.js b/benchmark/napi/function_args/index.js
new file mode 100644
index 0000000000..c8f281a342
--- /dev/null
+++ b/benchmark/napi/function_args/index.js
@@ -0,0 +1,99 @@
+// show the difference between calling a V8 binding C++ function
+// relative to a comparable N-API C++ function,
+// in various types/numbers of arguments.
+// Reports n of calls per second.
+'use strict';
+
+const common = require('../../common.js');
+
+let v8;
+let napi;
+
+try {
+  v8 = require('./build/Release/binding');
+} catch (err) {
+  // eslint-disable-next-line no-path-concat
+  console.error(__filename + ': V8 Binding failed to load');
+  process.exit(0);
+}
+
+try {
+  napi = require('./build/Release/napi_binding');
+} catch (err) {
+  // eslint-disable-next-line no-path-concat
+  console.error(__filename + ': NAPI-Binding failed to load');
+  process.exit(0);
+}
+
+const argsTypes = ['String', 'Number', 'Object', 'Array', 'Typedarray',
+                   '10Numbers', '100Numbers', '1000Numbers'];
+
+const generateArgs = (argType) => {
+  let args = [];
+
+  if (argType === 'String') {
+    args.push('The quick brown fox jumps over the lazy dog');
+  } else if (argType === 'LongString') {
+    args.push(Buffer.alloc(32768, '42').toString());
+  } else if (argType === 'Number') {
+    args.push(Math.floor(314158964 * Math.random()));
+  } else if (argType === 'Object') {
+    args.push({
+      map: 'add',
+      operand: 10,
+      data: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+      reduce: 'add',
+    });
+  } else if (argType === 'Array') {
+    const arr = [];
+    for (let i = 0; i < 50; ++i) {
+      arr.push(Math.random() * 10e9);
+    }
+    args.push(arr);
+  } else if (argType === 'Typedarray') {
+    const arr = new Uint32Array(1000);
+    for (let i = 0; i < 1000; ++i) {
+      arr[i] = Math.random() * 4294967296;
+    }
+    args.push(arr);
+  } else if (argType === '10Numbers') {
+    args.push(10);
+    for (let i = 0; i < 9; ++i) {
+      args = [...args, ...generateArgs('Number')];
+    }
+  } else if (argType === '100Numbers') {
+    args.push(100);
+    for (let i = 0; i < 99; ++i) {
+      args = [...args, ...generateArgs('Number')];
+    }
+  } else if (argType === '1000Numbers') {
+    args.push(1000);
+    for (let i = 0; i < 999; ++i) {
+      args = [...args, ...generateArgs('Number')];
+    }
+  }
+
+  return args;
+};
+
+const bench = common.createBenchmark(main, {
+  type: argsTypes,
+  engine: ['v8', 'napi'],
+  n: [1, 1e1, 1e2, 1e3, 1e4, 1e5],
+});
+
+function main({ n, engine, type }) {
+  const bindings = engine === 'v8' ? v8 : napi;
+  const methodName = 'callWith' + type;
+  const fn = bindings[methodName];
+
+  if (fn) {
+    const args = generateArgs(type);
+
+    bench.start();
+    for (var i = 0; i < n; i++) {
+      fn.apply(null, args);
+    }
+    bench.end(n);
+  }
+}