74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved. Use of
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// this source code is governed by a BSD-style license that can be found in the
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// LICENSE file.
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// Require 1.7 for sub-bencmarks
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// +build go1.7,!appengine
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package websocket
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import (
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"fmt"
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"testing"
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)
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func maskBytesByByte(key [4]byte, pos int, b []byte) int {
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for i := range b {
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b[i] ^= key[pos&3]
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pos++
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}
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return pos & 3
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}
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func notzero(b []byte) int {
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for i := range b {
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if b[i] != 0 {
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return i
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}
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}
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return -1
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}
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func TestMaskBytes(t *testing.T) {
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key := [4]byte{1, 2, 3, 4}
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for size := 1; size <= 1024; size++ {
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for align := 0; align < wordSize; align++ {
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for pos := 0; pos < 4; pos++ {
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b := make([]byte, size+align)[align:]
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maskBytes(key, pos, b)
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maskBytesByByte(key, pos, b)
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if i := notzero(b); i >= 0 {
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t.Errorf("size:%d, align:%d, pos:%d, offset:%d", size, align, pos, i)
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}
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}
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}
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}
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}
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func BenchmarkMaskBytes(b *testing.B) {
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for _, size := range []int{2, 4, 8, 16, 32, 512, 1024} {
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b.Run(fmt.Sprintf("size-%d", size), func(b *testing.B) {
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for _, align := range []int{wordSize / 2} {
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b.Run(fmt.Sprintf("align-%d", align), func(b *testing.B) {
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for _, fn := range []struct {
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name string
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fn func(key [4]byte, pos int, b []byte) int
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}{
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{"byte", maskBytesByByte},
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{"word", maskBytes},
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} {
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b.Run(fn.name, func(b *testing.B) {
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key := newMaskKey()
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data := make([]byte, size+align)[align:]
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for i := 0; i < b.N; i++ {
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fn.fn(key, 0, data)
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}
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b.SetBytes(int64(len(data)))
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})
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}
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})
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}
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})
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}
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}
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