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Add standard library atomic operations to benchmark #35

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Nov 14, 2017
Merged

Add standard library atomic operations to benchmark #35

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78 changes: 71 additions & 7 deletions stress_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,10 @@
package atomic

import (
"math"
"runtime"
"sync"
"sync/atomic"
"testing"
)

Expand All @@ -32,13 +34,17 @@ const (
)

var _stressTests = map[string]func() func(){
"i32": stressInt32,
"i64": stressInt64,
"u32": stressUint32,
"u64": stressUint64,
"f64": stressFloat64,
"bool": stressBool,
"string": stressString,
"i32/std": stressStdInt32,
"i32": stressInt32,
"i64/std": stressStdInt32,
"i64": stressInt64,
"u32/std": stressStdUint32,
"u32": stressUint32,
"u64/std": stressStdUint64,
"u64": stressUint64,
"f64": stressFloat64,
"bool": stressBool,
"string": stressString,
}

func TestStress(t *testing.T) {
Expand Down Expand Up @@ -87,6 +93,20 @@ func BenchmarkStress(b *testing.B) {
}
}

func stressStdInt32() func() {
var atom int32
return func() {
atomic.LoadInt32(&atom)
atomic.AddInt32(&atom, 1)
atomic.AddInt32(&atom, -2)
atomic.AddInt32(&atom, 1)
atomic.AddInt32(&atom, -1)
atomic.CompareAndSwapInt32(&atom, 1, 0)
atomic.SwapInt32(&atom, 5)
atomic.StoreInt32(&atom, 1)
}
}

func stressInt32() func() {
var atom Int32
return func() {
Expand All @@ -101,6 +121,20 @@ func stressInt32() func() {
}
}

func stressStdInt64() func() {
var atom int64
return func() {
atomic.LoadInt64(&atom)
atomic.AddInt64(&atom, 1)
atomic.AddInt64(&atom, -2)
atomic.AddInt64(&atom, 1)
atomic.AddInt64(&atom, -1)
atomic.CompareAndSwapInt64(&atom, 1, 0)
atomic.SwapInt64(&atom, 5)
atomic.StoreInt64(&atom, 1)
}
}

func stressInt64() func() {
var atom Int64
return func() {
Expand All @@ -115,6 +149,21 @@ func stressInt64() func() {
}
}

func stressStdUint32() func() {
var atom uint32
return func() {
atomic.LoadUint32(&atom)
atomic.AddUint32(&atom, 1)
// Adding `MaxUint32` is the same as subtracting 1
atomic.AddUint32(&atom, math.MaxUint32-1)
atomic.AddUint32(&atom, 1)
atomic.AddUint32(&atom, math.MaxUint32)
atomic.CompareAndSwapUint32(&atom, 1, 0)
atomic.SwapUint32(&atom, 5)
atomic.StoreUint32(&atom, 1)
}
}

func stressUint32() func() {
var atom Uint32
return func() {
Expand All @@ -129,6 +178,21 @@ func stressUint32() func() {
}
}

func stressStdUint64() func() {
var atom uint64
return func() {
atomic.LoadUint64(&atom)
atomic.AddUint64(&atom, 1)
// Adding `MaxUint64` is the same as subtracting 1
atomic.AddUint64(&atom, math.MaxUint64-1)
atomic.AddUint64(&atom, 1)
atomic.AddUint64(&atom, math.MaxUint64)
atomic.CompareAndSwapUint64(&atom, 1, 0)
atomic.SwapUint64(&atom, 5)
atomic.StoreUint64(&atom, 1)
}
}

func stressUint64() func() {
var atom Uint64
return func() {
Expand Down