87 lines
1.7 KiB
Go
87 lines
1.7 KiB
Go
// Copyright (c) 2015 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package zero_test
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import (
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"testing"
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. "github.com/btcsuite/btcwallet/internal/zero"
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)
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var (
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bytes32 = make([]byte, 32) // typical key size
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bytes64 = make([]byte, 64) // passphrase hash size
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bytea32 = new([32]byte)
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bytea64 = new([64]byte)
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)
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// xor is the "slow" byte zeroing implementation which this package
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// originally replaced. If this function benchmarks faster than the
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// functions exported by this package in a future Go version (perhaps
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// by calling runtime.memclr), replace the "optimized" versions with
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// this.
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func xor(b []byte) {
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for i := range b {
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b[i] ^= b[i]
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}
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}
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// zrange is an alternative zero implementation that, while currently
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// slower than the functions provided by this package, may be faster
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// in a future Go release. Switch to this or the xor implementation
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// if they ever become faster.
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func zrange(b []byte) {
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for i := range b {
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b[i] = 0
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}
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}
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func BenchmarkXor32(b *testing.B) {
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for i := 0; i < b.N; i++ {
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xor(bytes32)
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}
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}
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func BenchmarkXor64(b *testing.B) {
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for i := 0; i < b.N; i++ {
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xor(bytes64)
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}
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}
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func BenchmarkRange32(b *testing.B) {
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for i := 0; i < b.N; i++ {
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zrange(bytes32)
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}
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}
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func BenchmarkRange64(b *testing.B) {
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for i := 0; i < b.N; i++ {
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zrange(bytes64)
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}
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}
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func BenchmarkBytes32(b *testing.B) {
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for i := 0; i < b.N; i++ {
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Bytes(bytes32)
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}
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}
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func BenchmarkBytes64(b *testing.B) {
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for i := 0; i < b.N; i++ {
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Bytes(bytes64)
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}
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}
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func BenchmarkBytea32(b *testing.B) {
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for i := 0; i < b.N; i++ {
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Bytea32(bytea32)
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}
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}
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func BenchmarkBytea64(b *testing.B) {
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for i := 0; i < b.N; i++ {
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Bytea64(bytea64)
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}
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}
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