blob: 975f9f6ff61a4fe660697fa684380e13e02cfbf2 [file] [log] [blame]
// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart=2.9
import 'dart:typed_data';
import 'package:benchmark_harness/benchmark_harness.dart';
// Typed data block copy benchmark.
const int size = 256 * 1024;
class Int8ViewToInt8View extends BenchmarkBase {
Int8ViewToInt8View() : super('TypedDataCopy.Int8ViewToInt8View');
var a1;
var a2;
@override
void setup() {
final storage = Int8List(size);
final buffer = storage.buffer;
a1 = Int8List.view(buffer, 0, buffer.lengthInBytes);
a2 = Int8List.view(buffer, 8, buffer.lengthInBytes - 8);
for (int i = 0; i < a1.length; i++) {
a1[i] = i;
}
}
@override
void run() {
// Shift all bytes 8 positions nearer to the front.
a1.setRange(0, a2.length, a2);
final check = a1[a1.length - 8 - 1];
if (check != -1) throw 'Bad $check';
}
}
class Int8ViewToInt8 extends BenchmarkBase {
Int8ViewToInt8() : super('TypedDataCopy.Int8ViewToInt8');
var a1;
var a2;
@override
void setup() {
a1 = Int8List(size);
final buffer = a1.buffer;
a2 = Int8List.view(buffer, 8, buffer.lengthInBytes - 8);
for (int i = 0; i < a1.length; i++) {
a1[i] = i;
}
}
@override
void run() {
// Shift all bytes 8 positions nearer to the front.
a1.setRange(0, a2.length, a2);
final check = a1[a1.length - 8 - 1];
if (check != -1) {
throw 'Bad $check';
}
}
}
class Int8ToInt8 extends BenchmarkBase {
Int8ToInt8() : super('TypedDataCopy.Int8ToInt8');
var a1;
@override
void setup() {
a1 = Int8List(size);
for (int i = 0; i < a1.length; i++) {
a1[i] = i;
}
}
@override
void run() {
// Shift all bytes 8 positions nearer to the front.
a1.setRange(0, a1.length - 8, a1, 8);
final check = a1[a1.length - 8 - 1];
if (check != -1) {
throw 'Bad $check';
}
}
}
class Int8ToUint8Clamped extends BenchmarkBase {
Int8ToUint8Clamped() : super('TypedDataCopy.Int8ToUint8Clamped');
var a1;
var a2;
@override
void setup() {
a1 = Uint8ClampedList(size);
a2 = Int8List(size);
for (int i = 0; i < a2.length; i++) {
a2[i] = i;
}
}
@override
void run() {
a1.setRange(0, a2.length, a2, 0);
var check = a1[100];
if (check != 100) {
throw 'Bad $check';
}
check = a1[200];
if (check != 0) {
throw 'Bad $check';
}
}
}
class ByteSwap extends BenchmarkBase {
ByteSwap() : super('TypedDataCopy.ByteSwap');
final a8 = Int8List(size ~/ 16);
@override
void setup() {
for (int i = 0; i < a8.length; i++) {
a8[i] = i;
}
}
void check(e0, e1, e2, e3) {
final a0 = a8[0];
final a1 = a8[1];
final a2 = a8[2];
final a3 = a8[3];
if (a0 != e0 || a1 != e1 || a2 != e2 || a3 != e3) {
throw 'Bad: $a0 $a1 $a2 $a3, expected $e0 $e1 $e2 $e3';
}
}
@override
void run() {
final b = ByteData.view(a8.buffer);
// Do several passes over the data, reading and writing in different widths
// with different endianes.
for (int i = 0; i < b.lengthInBytes; i += 4) {
final e = b.getInt32(i); // Implicit big endian.
b.setInt32(i, e, Endian.little);
}
check(3, 2, 1, 0);
for (int i = 0; i < b.lengthInBytes; i += 2) {
final e = b.getInt16(i, Endian.big);
b.setInt16(i, e, Endian.little);
}
check(2, 3, 0, 1);
for (int i = 0; i < b.lengthInBytes; i += 4) {
final e = b.getUint32(i, Endian.little);
b.setUint32(i, e); // Implicit big endian.
}
check(1, 0, 3, 2);
for (int i = 0; i < b.lengthInBytes; i += 2) {
final e = b.getUint16(i, Endian.little);
b.setUint16(i, e, Endian.big);
}
check(0, 1, 2, 3); // Back to normal for the next run().
}
}