Current File : //usr/local/go119/src/runtime/internal/atomic/bench_test.go
// 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 any
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 BenchmarkAnd(b *testing.B) {
var x [128]uint32 // give x its own cache line
sink = &x
for i := 0; i < b.N; i++ {
atomic.And(&x[63], uint32(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 BenchmarkAndParallel(b *testing.B) {
var x [128]uint32 // give x its own cache line
sink = &x
b.RunParallel(func(pb *testing.PB) {
i := uint32(0)
for pb.Next() {
atomic.And(&x[63], 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 BenchmarkOr(b *testing.B) {
var x [128]uint32 // give x its own cache line
sink = &x
for i := 0; i < b.N; i++ {
atomic.Or(&x[63], uint32(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 BenchmarkOrParallel(b *testing.B) {
var x [128]uint32 // give x its own cache line
sink = &x
b.RunParallel(func(pb *testing.PB) {
i := uint32(0)
for pb.Next() {
atomic.Or(&x[63], 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)
}
})
}
func BenchmarkCas(b *testing.B) {
var x uint32
x = 1
ptr := &x
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
atomic.Cas(ptr, 1, 0)
atomic.Cas(ptr, 0, 1)
}
})
}
func BenchmarkCas64(b *testing.B) {
var x uint64
x = 1
ptr := &x
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
atomic.Cas64(ptr, 1, 0)
atomic.Cas64(ptr, 0, 1)
}
})
}
func BenchmarkXchg(b *testing.B) {
var x uint32
x = 1
ptr := &x
b.RunParallel(func(pb *testing.PB) {
var y uint32
y = 1
for pb.Next() {
y = atomic.Xchg(ptr, y)
y += 1
}
})
}
func BenchmarkXchg64(b *testing.B) {
var x uint64
x = 1
ptr := &x
b.RunParallel(func(pb *testing.PB) {
var y uint64
y = 1
for pb.Next() {
y = atomic.Xchg64(ptr, y)
y += 1
}
})
}
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