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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package atomic_test
import (
"runtime/internal/atomic"
"testing"
)
var sink interface{}
func BenchmarkAtomicLoad64(b *testing.B) {
var x uint64
sink = &x
for i := 0; i < b.N; i++ {
_ = atomic.Load64(&x)
}
}
func BenchmarkAtomicStore64(b *testing.B) {
var x uint64
sink = &x
for i := 0; i < b.N; i++ {
atomic.Store64(&x, 0)
}
}
func BenchmarkAtomicLoad(b *testing.B) {
var x uint32
sink = &x
for i := 0; i < b.N; i++ {
_ = atomic.Load(&x)
}
}
func BenchmarkAtomicStore(b *testing.B) {
var x uint32
sink = &x
for i := 0; i < b.N; i++ {
atomic.Store(&x, 0)
}
}
func BenchmarkAnd8(b *testing.B) {
var x [512]uint8 // give byte its own cache line
sink = &x
for i := 0; i < b.N; i++ {
atomic.And8(&x[255], uint8(i))
}
}
func BenchmarkAnd8Parallel(b *testing.B) {
var x [512]uint8 // give byte its own cache line
sink = &x
b.RunParallel(func(pb *testing.PB) {
i := uint8(0)
for pb.Next() {
atomic.And8(&x[255], i)
i++
}
})
}
func BenchmarkOr8(b *testing.B) {
var x [512]uint8 // give byte its own cache line
sink = &x
for i := 0; i < b.N; i++ {
atomic.Or8(&x[255], uint8(i))
}
}
func BenchmarkOr8Parallel(b *testing.B) {
var x [512]uint8 // give byte its own cache line
sink = &x
b.RunParallel(func(pb *testing.PB) {
i := uint8(0)
for pb.Next() {
atomic.Or8(&x[255], i)
i++
}
})
}
func BenchmarkXadd(b *testing.B) {
var x uint32
ptr := &x
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
atomic.Xadd(ptr, 1)
}
})
}
func BenchmarkXadd64(b *testing.B) {
var x uint64
ptr := &x
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
atomic.Xadd64(ptr, 1)
}
})
}
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