benchmark: add n-api function arguments benchmark suite

Makefile

@@ -283,6 +283,15 @@ benchmark/napi/function_call/build/Release/binding.node: all \
 		--directory="$(shell pwd)/benchmark/napi/function_call" \
 		--nodedir="$(shell pwd)"
 
+benchmark/napi/function_args/build/Release/binding.node: all \
+		benchmark/napi/function_args/napi_binding.c \
+		benchmark/napi/function_args/binding.cc \
+		benchmark/napi/function_args/binding.gyp
+	$(NODE) deps/npm/node_modules/node-gyp/bin/node-gyp rebuild \
+		--python="$(PYTHON)" \
+		--directory="$(shell pwd)/benchmark/napi/function_args" \
+		--nodedir="$(shell pwd)"
+
 # Implicitly depends on $(NODE_EXE).  We don't depend on it explicitly because
 # it always triggers a rebuild due to it being a .PHONY rule.  See the comment
 # near the build-addons rule for more background.

benchmark/napi/function_args/.gitignore

@@ -0,0 +1 @@
+build/

benchmark/napi/function_args/binding.cc

@@ -0,0 +1,142 @@
+#include <v8.h>
+#include <node.h>
+#include <assert.h>
+
+using v8::Isolate;
+using v8::Context;
+using v8::Local;
+using v8::MaybeLocal;
+using v8::Value;
+using v8::Number;
+using v8::String;
+using v8::Object;
+using v8::Array;
+using v8::ArrayBufferView;
+using v8::ArrayBuffer;
+using v8::FunctionCallbackInfo;
+
+void CallWithString(const FunctionCallbackInfo<Value>& args) {
+  assert(args.Length() == 1 && args[0]->IsString());
+  if (args.Length() == 1 && args[0]->IsString()) {
+    Local<String> str = args[0].As<String>();
+    const int32_t length = str->Utf8Length() + 1;
+    char* buf = new char[length];
+    str->WriteUtf8(buf, length);
+    delete [] buf;
+  }
+}
+
+void CallWithArray(const FunctionCallbackInfo<Value>& args) {
+  assert(args.Length() == 1 && args[0]->IsArray());
+  if (args.Length() == 1 && args[0]->IsArray()) {
+    const Local<Array> array = args[0].As<Array>();
+    uint32_t length = array->Length();
+    for (uint32_t i = 0; i < length; ++ i) {
+      Local<Value> v;
+      v = array->Get(i);
+    }
+  }
+}
+
+void CallWithNumber(const FunctionCallbackInfo<Value>& args) {
+  assert(args.Length() == 1 && args[0]->IsNumber());
+  if (args.Length() == 1 && args[0]->IsNumber()) {
+    args[0].As<Number>()->Value();
+  }
+}
+
+void CallWithObject(const FunctionCallbackInfo<Value>& args) {
+  Isolate* isolate = args.GetIsolate();
+  Local<Context> context = isolate->GetCurrentContext();
+
+  assert(args.Length() == 1 && args[0]->IsObject());
+  if (args.Length() == 1 && args[0]->IsObject()) {
+    Local<Object> obj = args[0].As<Object>();
+
+    MaybeLocal<String> map_key = String::NewFromUtf8(isolate,
+        "map", v8::NewStringType::kNormal);
+    assert(!map_key.IsEmpty());
+    MaybeLocal<Value> map_maybe = obj->Get(context,
+        map_key.ToLocalChecked());
+    assert(!map_maybe.IsEmpty());
+    Local<Value> map;
+    map = map_maybe.ToLocalChecked();
+
+    MaybeLocal<String> operand_key = String::NewFromUtf8(isolate,
+        "operand", v8::NewStringType::kNormal);
+    assert(!operand_key.IsEmpty());
+    MaybeLocal<Value> operand_maybe = obj->Get(context,
+        operand_key.ToLocalChecked());
+    assert(!operand_maybe.IsEmpty());
+    Local<Value> operand;
+    operand = operand_maybe.ToLocalChecked();
+
+    MaybeLocal<String> data_key = String::NewFromUtf8(isolate,
+        "data", v8::NewStringType::kNormal);
+    assert(!data_key.IsEmpty());
+    MaybeLocal<Value> data_maybe = obj->Get(context,
+        data_key.ToLocalChecked());
+    assert(!data_maybe.IsEmpty());
+    Local<Value> data;
+    data = data_maybe.ToLocalChecked();
+
+    MaybeLocal<String> reduce_key = String::NewFromUtf8(isolate,
+        "reduce", v8::NewStringType::kNormal);
+    assert(!reduce_key.IsEmpty());
+    MaybeLocal<Value> reduce_maybe = obj->Get(context,
+        reduce_key.ToLocalChecked());
+    assert(!reduce_maybe.IsEmpty());
+    Local<Value> reduce;
+    reduce = reduce_maybe.ToLocalChecked();
+  }
+}
+
+void CallWithTypedarray(const FunctionCallbackInfo<Value>& args) {
+  assert(args.Length() == 1 && args[0]->IsArrayBufferView());
+  if (args.Length() == 1 && args[0]->IsArrayBufferView()) {
+    assert(args[0]->IsArrayBufferView());
+    Local<ArrayBufferView> view = args[0].As<ArrayBufferView>();
+    const size_t byte_offset = view->ByteOffset();
+    const size_t byte_length = view->ByteLength();
+    assert(byte_length > 0);
+    assert(view->HasBuffer());
+    Local<ArrayBuffer> buffer;
+    buffer = view->Buffer();
+    ArrayBuffer::Contents contents;
+    contents = buffer->GetContents();
+    const uint32_t* data = reinterpret_cast<uint32_t*>(
+        static_cast<uint8_t*>(contents.Data()) + byte_offset);
+    assert(data);
+  }
+}
+
+void CallWithArguments(const FunctionCallbackInfo<Value>& args) {
+  assert(args.Length() > 1 && args[0]->IsNumber());
+  if (args.Length() > 1 && args[0]->IsNumber()) {
+    int32_t loop = args[0].As<v8::Uint32>()->Value();
+    for (int32_t i = 1; i < loop; ++i) {
+      assert(i < args.Length());
+      assert(args[i]->IsUint32());
+      args[i].As<v8::Uint32>()->Value();
+    }
+  }
+}
+
+void Initialize(Local<Object> target) {
+  NODE_SET_METHOD(target, "callWithString", CallWithString);
+  NODE_SET_METHOD(target, "callWithLongString", CallWithString);
+
+  NODE_SET_METHOD(target, "callWithArray", CallWithArray);
+  NODE_SET_METHOD(target, "callWithLargeArray", CallWithArray);
+  NODE_SET_METHOD(target, "callWithHugeArray", CallWithArray);
+
+  NODE_SET_METHOD(target, "callWithNumber", CallWithNumber);
+  NODE_SET_METHOD(target, "callWithObject", CallWithObject);
+  NODE_SET_METHOD(target, "callWithTypedarray", CallWithTypedarray);
+
+  NODE_SET_METHOD(target, "callWith10Numbers", CallWithArguments);
+  NODE_SET_METHOD(target, "callWith100Numbers", CallWithArguments);
+  NODE_SET_METHOD(target, "callWith1000Numbers", CallWithArguments);
+}
+
+NODE_MODULE(NODE_GYP_MODULE_NAME, Initialize)

benchmark/napi/function_args/binding.gyp

@@ -0,0 +1,12 @@
+{
+  'targets': [
+    {
+      'target_name': 'napi_binding',
+      'sources': [ 'napi_binding.c' ]
+    },
+    {
+      'target_name': 'binding',
+      'sources': [ 'binding.cc' ]
+    }
+  ]
+}

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);
+  }
+}