add ThreadLocal and Context

collections/HashMap.go

@@ -8,27 +8,29 @@ import (
 
 type (
 	//HashMap
-	//TODO impl
 	HashMap[K lang.Object, V any] struct {
 		NodeMap[K, V]
 		slot       []*hashMapNode[K, V]
 		loadFactor float32
+		size       int
+	}
+
+	abstractHashMapNode[K lang.Object, V any] struct {
+		m    *HashMap[K, V]
+		hash int32
 	}
 
 	hashMapNode[K lang.Object, V any] struct {
 		lang.BaseObject
-		m     *HashMap[K, V]
+		abstractHashMapNode[K, V]
 		key   K
 		value V
 		next  *hashMapNode[K, V]
-		hash  int32
 	}
 
 	emptyHashMapSlot[K lang.Object, V any] struct {
 		lang.BaseObject
-		m        *HashMap[K, V]
-		hashCode int32
-		index    int
+		abstractHashMapNode[K, V]
 	}
 )
 
@@ -45,23 +47,23 @@ func NewHashMapInitCap[K lang.Object, V any](initialCapacity int, loadFactor flo
 	return m
 }
 
-func (h *HashMap[K, V]) String() string {
-	return MapToString[K, V](h).String()
+func (m *HashMap[K, V]) String() string {
+	return MapToString[K, V](m).String()
 }
 
-func (h *HashMap[K, V]) findSlot(k K) MapNode[K, V] {
+func (m *HashMap[K, V]) findSlot(k K) MapNode[K, V] {
 	hashCode := lang.HashCode(k)
 	hashCode ^= hashCode >> 16
-	index := int(hashCode) % len(h.slot)
-	root := h.slot[index]
+	index := int(hashCode) % len(m.slot)
+	root := m.slot[index]
 	if root == nil {
-		return &emptyHashMapSlot[K, V]{m: h, hashCode: hashCode, index: index}
+		return &emptyHashMapSlot[K, V]{abstractHashMapNode: abstractHashMapNode[K, V]{m: m, hash: hashCode}}
 	}
 	return root
 }
 
-func (h *HashMap[K, V]) Loop(f func(K, V) exceptions.Exception) (err exceptions.Exception) {
-	for _, node := range h.slot {
+func (m *HashMap[K, V]) Loop(f func(K, V) exceptions.Exception) (err exceptions.Exception) {
+	for _, node := range m.slot {
 		for node != nil {
 			err = f(node.GetKey(), node.GetValue())
 			if err != nil {
@@ -73,32 +75,74 @@ func (h *HashMap[K, V]) Loop(f func(K, V) exceptions.Exception) (err exceptions.
 	return
 }
 
+func (m *HashMap[K, V]) resize() {
+	slot := m.slot
+	resize := len(slot)
+	load := int(float32(m.size) / m.loadFactor)
+	for load < resize {
+		resize >>= 1
+	}
+	for load > resize {
+		resize <<= 1
+	}
+	if resize == len(slot) {
+		return
+	}
+	m.slot = make([]*hashMapNode[K, V], resize)
+	for _, node := range slot {
+		for node != nil {
+			next := node.next
+			index := node.index()
+			node.next = m.slot[index]
+			m.slot[index] = node
+			node = next
+		}
+	}
+}
+
+func (m *HashMap[K, V]) resizeFromRemove() {
+	if len(m.slot) > int(float32(m.size)/m.loadFactor) {
+		m.resize()
+	}
+}
+
+func (m *HashMap[K, V]) resizeFromAdd() {
+	if len(m.slot) < int(float32(m.size)/m.loadFactor) {
+		m.resize()
+	}
+}
+
+func (n *abstractHashMapNode[K, V]) index() int {
+	return int(n.hash) % len(n.m.slot)
+}
+
 func (e *emptyHashMapSlot[K, V]) GetKey() K {
-	//TODO implement me
-	panic("implement me")
+	return lang.Nil[K]()
 }
 
 func (e *emptyHashMapSlot[K, V]) GetValue() V {
-	//TODO implement me
-	panic("implement me")
+	return lang.Nil[V]()
 }
 
-func (e *emptyHashMapSlot[K, V]) SetValue(value V) {
-	//TODO implement me
-	panic("implement me")
+func (e *emptyHashMapSlot[K, V]) SetValue(_ V) {
 }
 
 func (e *emptyHashMapSlot[K, V]) CreateNext(key K) MapNode[K, V] {
+	index := e.index()
 	node := &hashMapNode[K, V]{
-		key:  key,
-		hash: lang.HashCode(key),
+		key:                 key,
+		abstractHashMapNode: abstractHashMapNode[K, V]{m: e.m, hash: lang.HashCode(key)},
+		next:                e.m.slot[index],
 	}
-	e.m.slot[e.index] = node
+	e.m.slot[index] = node
+	e.m.size++
+	e.m.resizeFromAdd()
 	return node
 }
 
 func (e *emptyHashMapSlot[K, V]) GetNext() MapNode[K, V] {
-	node := e.m.slot[e.index]
+	node := e.m.slot[e.index()]
+	// required
 	if node == nil {
 		return nil
 	}
@@ -106,9 +150,11 @@ func (e *emptyHashMapSlot[K, V]) GetNext() MapNode[K, V] {
 }
 
 func (e *emptyHashMapSlot[K, V]) RemoveNext() {
-	node := e.m.slot[e.index]
+	node := e.m.slot[e.index()]
 	if node != nil {
-		e.m.slot[e.index] = node.next
+		e.m.slot[e.index()] = node.next
+		e.m.size--
+		e.m.resizeFromRemove()
 	}
 }
 
@@ -129,7 +175,16 @@ func (s *hashMapNode[K, V]) SetValue(value V) {
 }
 
 func (s *hashMapNode[K, V]) CreateNext(key K) MapNode[K, V] {
-	s.next = &hashMapNode[K, V]{key: key, next: s.next, hash: lang.HashCode(key)}
+	s.next = &hashMapNode[K, V]{
+		key:  key,
+		next: s.next,
+		abstractHashMapNode: abstractHashMapNode[K, V]{
+			m:    s.m,
+			hash: lang.HashCode(key),
+		},
+	}
+	s.m.size++
+	s.m.resizeFromAdd()
 	return s.next
 }
 
@@ -143,5 +198,7 @@ func (s *hashMapNode[K, V]) GetNext() MapNode[K, V] {
 func (s *hashMapNode[K, V]) RemoveNext() {
 	if s.next != nil {
 		s.next = s.next.next
+		s.m.size--
+		s.m.resizeFromRemove()
 	}
 }

collections/HashMap_test.go

@@ -13,4 +13,6 @@ func TestHashMap_put(t *testing.T) {
 		m.Put(lang.Int(i), i+1)
 	}
 	fmt.Println(m)
+	m.resize()
+	fmt.Println(m)
 }

collections/Map.go

@@ -14,8 +14,12 @@ type (
 
 	Map[K lang.Object, V any] interface {
 		MapLooper[K, V]
-		Put(k K, v V) (bool, exceptions.Exception)
 		Get(k K) (V, bool, exceptions.Exception)
+	}
+
+	MutableMap[K lang.Object, V any] interface {
+		Map[K, V]
+		Put(k K, v V) (bool, exceptions.Exception)
 		Remove(k K) (V, bool, exceptions.Exception)
 	}
 

exceptions/CollectionOperations.go

@@ -1,5 +1,5 @@
 package exceptions
 
-var ElementFound = NewRuntimeException("", DefaultExceptionConfig().SetGetStackTrace(false).SetExceptionName("ElementFound"))
-var ElementNotFound = NewRuntimeException("", DefaultExceptionConfig().SetGetStackTrace(false).SetExceptionName("ElementNotFound"))
-var CollectionLoopFinished = NewRuntimeException("", DefaultExceptionConfig().SetGetStackTrace(false).SetExceptionName("CollectionLoopFinished"))
+var ElementFound = NewRuntimeException("", DefaultExceptionConfig().SetGetStackTrace(false).SetExceptionName("github.com.tursom.GoCollections.exceptions.ElementFound"))
+var ElementNotFound = NewElementNotFoundException("", nil)
+var CollectionLoopFinished = NewRuntimeException("", DefaultExceptionConfig().SetGetStackTrace(false).SetExceptionName("github.com.tursom.GoCollections.exceptions.CollectionLoopFinished"))

exceptions/ElementNotFound.go

@@ -6,6 +6,7 @@ type ElementNotFoundException struct {
 
 func NewElementNotFoundException(message string, config *ExceptionConfig) *ElementNotFoundException {
 	return &ElementNotFoundException{
-		NewRuntimeException(message, config.AddSkipStack(1).SetExceptionName("ElementNotFoundException")),
+		NewRuntimeException(message, config.AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.ElementNotFoundException")),
 	}
 }

exceptions/Exception.go

@@ -48,7 +48,8 @@ func BuildStackTraceByArray(builder *strings.Builder, trace []StackTrace) {
 }
 
 func BuildStackTrace(builder *strings.Builder, e Exception) {
-	builder.WriteString(fmt.Sprintf("exception caused %s: %s\n", e.Name(), e.Message()))
+	builder.WriteString(e.Error())
+	builder.WriteString("\n")
 	if e.StackTrace() == nil {
 		return
 	}

exceptions/ExceptionConfig.go

@@ -7,6 +7,10 @@ type ExceptionConfig struct {
 	ExceptionName string
 }
 
+func Cfg() *ExceptionConfig {
+	return DefaultExceptionConfig()
+}
+
 func DefaultExceptionConfig() *ExceptionConfig {
 	return &ExceptionConfig{
 		SkipStack:     0,

exceptions/IllegalParameter.go

@@ -6,6 +6,7 @@ type IllegalParameterException struct {
 
 func NewIllegalParameterException(message string, config *ExceptionConfig) *IllegalParameterException {
 	return &IllegalParameterException{
-		NewRuntimeException(message, config.AddSkipStack(1).SetExceptionName("IllegalParameterException")),
+		NewRuntimeException(message, config.AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.IllegalParameterException")),
 	}
 }

exceptions/IndexOutOfBoundError.go

@@ -6,7 +6,8 @@ type IndexOutOfBound struct {
 
 func NewIndexOutOfBound(message string, config *ExceptionConfig) *IndexOutOfBound {
 	return &IndexOutOfBound{
-		NewRuntimeException(message, config.AddSkipStack(1).SetExceptionName("IndexOutOfBound")),
+		NewRuntimeException(message, config.AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.IndexOutOfBound")),
 	}
 }
 
@@ -14,7 +15,7 @@ func CatchIndexOutOfBound[T any](f func() T, config *ExceptionConfig) (r T, err
 	defer func() {
 		r := recover()
 		if r != nil {
-			err = NewIndexOutOfBound("", config.AddSkipStack(3).SetCause(PackageAny(r)))
+			err = NewIndexOutOfBound("", config.AddSkipStack(3).SetCause(r))
 		}
 	}()
 	r = f()

exceptions/NPE.go

@@ -11,7 +11,8 @@ type NPE struct {
 
 func NewNPE(message string, config *ExceptionConfig) *NPE {
 	return &NPE{
-		NewRuntimeException(message, config.AddSkipStack(1).SetExceptionName("NPE")),
+		NewRuntimeException(message, config.AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.NPE")),
 	}
 }
 

exceptions/OperationNotSupportedException.go

@@ -6,6 +6,7 @@ type OperationNotSupportedException struct {
 
 func NewOperationNotSupportedException(message string, config *ExceptionConfig) *OperationNotSupportedException {
 	return &OperationNotSupportedException{
-		NewRuntimeException(message, config.AddSkipStack(1).SetExceptionName("OperationNotSupportedException")),
+		NewRuntimeException(message, config.AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.OperationNotSupportedException")),
 	}
 }

exceptions/PackageException.go

@@ -21,8 +21,9 @@ func NewPackageException(err any, config *ExceptionConfig) *PackageException {
 	t := reflect.TypeOf(err)
 	message = fmt.Sprintf("%s (%s)", message, t.Name())
 	return &PackageException{
-		RuntimeException: NewRuntimeException(message, config.AddSkipStack(1).SetExceptionName("PackageException")),
-		err:              err,
+		RuntimeException: NewRuntimeException(message, config.AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.PackageException")),
+		err: err,
 	}
 }
 

exceptions/RuntimeException.go

@@ -1,6 +1,7 @@
 package exceptions
 
 import (
+	"fmt"
 	"github.com/tursom/GoCollections/lang"
 	"io"
 	"os"
@@ -36,7 +37,7 @@ func NewRuntimeException(message string, config *ExceptionConfig) RuntimeExcepti
 		}
 	}
 
-	exceptionName := "RuntimeException"
+	exceptionName := "github.com.tursom.GoCollections.exceptions.RuntimeException"
 	if len(config.ExceptionName) != 0 {
 		exceptionName = config.ExceptionName
 	}
@@ -55,9 +56,17 @@ func (o RuntimeException) Cause() Exception {
 }
 
 func (o RuntimeException) Error() string {
-	builder := strings.Builder{}
-	o.BuildPrintStackTrace(&builder)
-	return builder.String()
+	message := o.message
+	if len(message) == 0 {
+		if o.cause != nil {
+			message = fmt.Sprintf("%s: %s", o.Name(), o.cause.Error())
+		} else {
+			message = o.Name()
+		}
+	} else {
+		message = fmt.Sprintf("%s: %s", o.Name(), message)
+	}
+	return message
 }
 
 func (o RuntimeException) Message() string {
@@ -77,7 +86,9 @@ func (o RuntimeException) PrintStackTrace() {
 }
 
 func (o RuntimeException) PrintStackTraceTo(writer io.Writer) {
-	bytes := []byte(o.Error())
+	builder := strings.Builder{}
+	o.BuildPrintStackTrace(&builder)
+	bytes := []byte(builder.String())
 	writeBytes := 0
 	for writeBytes < len(bytes) {
 		write, err := writer.Write(bytes[writeBytes:])

exceptions/RuntimeException_test.go

@@ -0,0 +1,12 @@
+package exceptions
+
+import (
+	"testing"
+)
+
+func TestRuntimeException_PrintStackTrace(t *testing.T) {
+	exception := NewRuntimeException("test1", DefaultExceptionConfig().SetCause(1))
+	exception = NewRuntimeException("test2", DefaultExceptionConfig().SetCause(exception))
+	exception = NewRuntimeException("", DefaultExceptionConfig().SetCause(exception))
+	exception.PrintStackTrace()
+}

exceptions/StackTrace_test.go

@@ -0,0 +1,13 @@
+package exceptions
+
+import (
+	"fmt"
+	"testing"
+	"unsafe"
+)
+
+func TestGetStackTrace(t *testing.T) {
+	fmt.Println(unsafe.Sizeof(StackTrace{}))
+	fmt.Println(unsafe.Sizeof(make([]StackTrace, 0, 16)))
+	fmt.Println(unsafe.Sizeof(make([]StackTrace, 0, 16)) + unsafe.Sizeof(StackTrace{})*16)
+}

exceptions/TypeCastException.go

@@ -12,7 +12,8 @@ type TypeCastException struct {
 
 func NewTypeCastException(message string, config *ExceptionConfig) *TypeCastException {
 	return &TypeCastException{
-		NewRuntimeException(message, config.AddSkipStack(1).SetExceptionName("TypeCastException")),
+		NewRuntimeException(message, config.AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.TypeCastException")),
 	}
 }
 

exceptions/WrongCallHostException.go

@@ -6,6 +6,7 @@ type WrongCallHostException struct {
 
 func NewWrongCallHostException(message string) WrongCallHostException {
 	return WrongCallHostException{
-		NewRuntimeException(message, DefaultExceptionConfig().AddSkipStack(1).SetExceptionName("WrongCallHostException")),
+		NewRuntimeException(message, DefaultExceptionConfig().AddSkipStack(1).
+			SetExceptionName("github.com.tursom.GoCollections.exceptions.WrongCallHostException")),
 	}
 }

go.mod

@@ -2,4 +2,7 @@ module github.com/tursom/GoCollections
 
 go 1.18
 
-require github.com/petermattis/goid v0.0.0-20220302125637-5f11c28912df
+require (
+	github.com/petermattis/goid v0.0.0-20220302125637-5f11c28912df
+	github.com/timandy/routine v1.0.5
+)

lang/Lang.go

@@ -32,10 +32,10 @@ func Cast[T any](v any) T {
 	}
 }
 
-func ForceCast[T any](v unsafe.Pointer) T {
+func ForceCast[T any](v unsafe.Pointer) *T {
 	if v == nil {
-		return Nil[T]()
+		return nil
 	} else {
-		return Cast[T](v)
+		return (*T)(v)
 	}
 }

lang/Object.go

@@ -23,6 +23,10 @@ type (
 
 	Any = Object
 
+	IsBaseObject interface {
+		AsBaseObject() *BaseObject
+	}
+
 	BaseObject struct {
 	}
 )
@@ -54,6 +58,10 @@ func (b *BaseObject) AsObject() Object {
 	return b
 }
 
+func (b *BaseObject) AsBaseObject() *BaseObject {
+	return b
+}
+
 func (b *BaseObject) Equals(o Object) bool {
 	return b == o
 }
@@ -73,3 +81,14 @@ func (b *BaseObject) ToString() String {
 func (b *BaseObject) HashCode() int32 {
 	return Hash64(b)
 }
+
+func (b *BaseObject) Compare(t IsBaseObject) int {
+	o := t.AsBaseObject()
+	if b == o {
+		return 0
+	} else if uintptr(unsafe.Pointer(b)) > uintptr(unsafe.Pointer(o)) {
+		return 1
+	} else {
+		return -1
+	}
+}

lang/ThreadLocal.go

@@ -0,0 +1,74 @@
+package lang
+
+import (
+	"github.com/timandy/routine"
+)
+
+//goland:noinspection GoUnusedGlobalVariable
+var (
+	ThreadLocalGo           = routine.Go
+	ThreadLocalGoWait       = routine.GoWait
+	ThreadLocalGoWaitResult = routine.GoWaitResult
+)
+
+type (
+	ThreadLocal[T any] interface {
+		Object
+		Get() T
+		Put(value T)
+		Remove()
+	}
+
+	threadLocalImpl[T any] struct {
+		BaseObject
+		threadLocal routine.ThreadLocal
+	}
+)
+
+func GoId() int64 {
+	return routine.Goid()
+}
+
+//goland:noinspection GoUnusedExportedFunction
+func NewThreadLocal[T any]() ThreadLocal[T] {
+	return &threadLocalImpl[T]{
+		threadLocal: routine.NewInheritableThreadLocal(),
+	}
+}
+
+//goland:noinspection GoUnusedExportedFunction
+func NewThreadLocalWithInitial[T any](supplier func() T) ThreadLocal[T] {
+	return &threadLocalImpl[T]{
+		threadLocal: routine.NewThreadLocalWithInitial(func() routine.Any {
+			return supplier()
+		}),
+	}
+}
+
+//goland:noinspection GoUnusedExportedFunction
+func NewInheritableThreadLocal[T any]() ThreadLocal[T] {
+	return &threadLocalImpl[T]{
+		threadLocal: routine.NewInheritableThreadLocal(),
+	}
+}
+
+//goland:noinspection GoUnusedExportedFunction
+func NewInheritableThreadLocalWithInitial[T any](supplier func() T) ThreadLocal[T] {
+	return &threadLocalImpl[T]{
+		threadLocal: routine.NewInheritableThreadLocalWithInitial(func() routine.Any {
+			return supplier()
+		}),
+	}
+}
+
+func (t *threadLocalImpl[T]) Get() T {
+	return Cast[T](t.threadLocal.Get())
+}
+
+func (t *threadLocalImpl[T]) Put(value T) {
+	t.threadLocal.Set(value)
+}
+
+func (t *threadLocalImpl[T]) Remove() {
+	t.threadLocal.Remove()
+}

lang/ThreadLocal_test.go

@@ -0,0 +1,15 @@
+package lang
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestThreadLocalImpl(t1 *testing.T) {
+	local := NewThreadLocal[int]()
+	fmt.Println(local.Get())
+	local.Put(1)
+	fmt.Println(local.Get())
+	local.Remove()
+	fmt.Println(local.Get())
+}

lang/atomic/Array.go

@@ -0,0 +1,110 @@
+package atomic
+
+type (
+	Array[T any] struct {
+		atomic *Atomic[T]
+		array  []T
+	}
+	Int32Array struct {
+		Array[int32]
+	}
+	Int64Array struct {
+		Array[int64]
+	}
+	UInt32Array struct {
+		Array[uint32]
+	}
+	UInt64Array struct {
+		Array[uint64]
+	}
+)
+
+func NewArray[T any](size int) *Array[*T] {
+	return &Array[*T]{
+		atomic: GetAtomic[T](),
+		array:  make([]*T, size),
+	}
+}
+
+func CapArray[T any](array []*T) *Array[*T] {
+	return &Array[*T]{
+		atomic: GetAtomic[T](),
+		array:  array,
+	}
+}
+
+func NewInt32Array(size int) *Int32Array {
+	return &Int32Array{
+		Array[int32]{
+			atomic: &Int32F,
+			array:  make([]int32, size),
+		},
+	}
+}
+
+func NewInt64Array(size int) *Int64Array {
+	return &Int64Array{
+		Array[int64]{
+			atomic: &Int64F,
+			array:  make([]int64, size),
+		},
+	}
+}
+
+func NewUInt32Array(size int) *UInt32Array {
+	return &UInt32Array{
+		Array[uint32]{
+			atomic: &UInt32F,
+			array:  make([]uint32, size),
+		},
+	}
+}
+
+func NewUInt64Array(size int) *UInt64Array {
+	return &UInt64Array{
+		Array[uint64]{
+			atomic: &UInt64F,
+			array:  make([]uint64, size),
+		},
+	}
+}
+
+func (a *Array[T]) Len() int {
+	return len(a.array)
+}
+
+func (a *Array[T]) Array() []T {
+	return a.array
+}
+
+func (a *Array[T]) Get(index int) T {
+	return a.atomic.Load(&a.array[index])
+}
+
+func (a *Array[T]) Set(index int, p T) {
+	a.atomic.Store(&a.array[index], p)
+}
+
+func (a *Array[T]) Swap(index int, p T) (old T) {
+	return a.atomic.Swap(&a.array[index], p)
+}
+
+func (a *Array[T]) CompareAndSwap(index int, old, new T) (swapped bool) {
+	return a.atomic.CompareAndSwap(&a.array[index], old, new)
+}
+
+func (a *Int32Array) Add(index int, value int32) {
+	AddInt32(&a.array[index], value)
+}
+
+func (a *Int64Array) Add(index int, value int64) {
+	AddInt64(&a.array[index], value)
+}
+
+func (a *UInt32Array) Add(index int, value uint32) {
+	AddUInt32(&a.array[index], value)
+}
+
+func (a *UInt64Array) Add(index int, value uint64) {
+	AddUInt64(&a.array[index], value)
+}

lang/atomic/Atomic.go

@@ -5,6 +5,58 @@ import (
 	"unsafe"
 )
 
+type (
+	Atomic[T any] struct {
+		Swap           func(addr *T, new T) (old T)
+		CompareAndSwap func(addr *T, old, new T) (swapped bool)
+		Load           func(addr *T) (val T)
+		Store          func(addr *T, val T)
+	}
+)
+
+//goland:noinspection GoUnusedGlobalVariable
+var (
+	Int32F = Atomic[int32]{
+		SwapInt32,
+		CompareAndSwapInt32,
+		LoadInt32,
+		StoreInt32,
+	}
+	Int64F = Atomic[int64]{
+		SwapInt64,
+		CompareAndSwapInt64,
+		LoadInt64,
+		StoreInt64,
+	}
+	UInt32F = Atomic[uint32]{
+		SwapUInt32,
+		CompareAndSwapUInt32,
+		LoadUint32,
+		StoreUInt32,
+	}
+	UInt64F = Atomic[uint64]{
+		SwapUInt64,
+		CompareAndSwapUInt64,
+		LoadUint64,
+		StoreUInt64,
+	}
+	PointerF = Atomic[unsafe.Pointer]{
+		UnsafeSwapPointer,
+		UnsafeCompareAndSwapPointer,
+		UnsafeLoadPointer,
+		UnsafeStorePointer,
+	}
+)
+
+func GetAtomic[T any]() *Atomic[*T] {
+	return &Atomic[*T]{
+		SwapPointer[T],
+		CompareAndSwapPointer[T],
+		LoadPointer[T],
+		StorePointer[T],
+	}
+}
+
 func SwapInt32(addr *int32, new int32) (old int32) {
 	return atomic.SwapInt32(addr, new)
 }
@@ -13,11 +65,11 @@ func SwapInt64(addr *int64, new int64) (old int64) {
 	return atomic.SwapInt64(addr, new)
 }
 
-func SwapUint32(addr *uint32, new uint32) (old uint32) {
+func SwapUInt32(addr *uint32, new uint32) (old uint32) {
 	return atomic.SwapUint32(addr, new)
 }
 
-func SwapUint64(addr *uint64, new uint64) (old uint64) {
+func SwapUInt64(addr *uint64, new uint64) (old uint64) {
 	return atomic.SwapUint64(addr, new)
 }
 
@@ -37,11 +89,11 @@ func CompareAndSwapInt64(addr *int64, old, new int64) (swapped bool) {
 	return atomic.CompareAndSwapInt64(addr, old, new)
 }
 
-func CompareAndSwapUint32(addr *uint32, old, new uint32) (swapped bool) {
+func CompareAndSwapUInt32(addr *uint32, old, new uint32) (swapped bool) {
 	return atomic.CompareAndSwapUint32(addr, old, new)
 }
 
-func CompareAndSwapUint64(addr *uint64, old, new uint64) (swapped bool) {
+func CompareAndSwapUInt64(addr *uint64, old, new uint64) (swapped bool) {
 	return atomic.CompareAndSwapUint64(addr, old, new)
 }
 
@@ -57,7 +109,7 @@ func AddInt32(addr *int32, delta int32) (new int32) {
 	return atomic.AddInt32(addr, delta)
 }
 
-func AddUint32(addr *uint32, delta uint32) (new uint32) {
+func AddUInt32(addr *uint32, delta uint32) (new uint32) {
 	return atomic.AddUint32(addr, delta)
 }
 
@@ -65,7 +117,7 @@ func AddInt64(addr *int64, delta int64) (new int64) {
 	return atomic.AddInt64(addr, delta)
 }
 
-func AddUint64(addr *uint64, delta uint64) (new uint64) {
+func AddUInt64(addr *uint64, delta uint64) (new uint64) {
 	return atomic.AddUint64(addr, delta)
 }
 
@@ -105,11 +157,11 @@ func StoreInt64(addr *int64, val int64) {
 	atomic.StoreInt64(addr, val)
 }
 
-func StoreUint32(addr *uint32, val uint32) {
+func StoreUInt32(addr *uint32, val uint32) {
 	atomic.StoreUint32(addr, val)
 }
 
-func StoreUint64(addr *uint64, val uint64) {
+func StoreUInt64(addr *uint64, val uint64) {
 	atomic.StoreUint64(addr, val)
 }
 

lang/atomic/Reference.go

@@ -5,9 +5,21 @@ import (
 	"unsafe"
 )
 
-type Reference[T any] struct {
-	reference *T
-}
+//goland:noinspection GoUnusedGlobalVariable
+var (
+	UnsafeLoadPointer           = atomic.LoadPointer
+	UnsafeStorePointer          = atomic.StorePointer
+	UnsafeSwapPointer           = atomic.SwapPointer
+	UnsafeCompareAndSwapPointer = atomic.CompareAndSwapPointer
+)
+
+type (
+	Pointer          = unsafe.Pointer
+	PPointer         = *unsafe.Pointer
+	Reference[T any] struct {
+		reference *T
+	}
+)
 
 func NewReference[T any](reference *T) *Reference[T] {
 	return &Reference[T]{reference}
@@ -29,18 +41,22 @@ func (v *Reference[T]) CompareAndSwap(old, new *T) (swapped bool) {
 	return CompareAndSwapPointer(&v.reference, old, new)
 }
 
+func AsPPointer[T any](p **T) *unsafe.Pointer {
+	return (*unsafe.Pointer)(unsafe.Pointer(p))
+}
+
 func LoadPointer[T any](addr **T) (val *T) {
-	return (*T)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(addr))))
+	return (*T)(atomic.LoadPointer(AsPPointer(addr)))
 }
 
 func StorePointer[T any](addr **T, val *T) {
-	atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(addr)), unsafe.Pointer(val))
+	atomic.StorePointer(AsPPointer(addr), unsafe.Pointer(val))
 }
 
 func SwapPointer[T any](addr **T, new *T) (old *T) {
-	return (*T)(atomic.SwapPointer((*unsafe.Pointer)(unsafe.Pointer(addr)), unsafe.Pointer(new)))
+	return (*T)(atomic.SwapPointer(AsPPointer(addr), unsafe.Pointer(new)))
 }
 
 func CompareAndSwapPointer[T any](addr **T, old, new *T) (swapped bool) {
-	return atomic.CompareAndSwapPointer((*unsafe.Pointer)(unsafe.Pointer(addr)), unsafe.Pointer(old), unsafe.Pointer(new))
+	return atomic.CompareAndSwapPointer(AsPPointer(addr), Pointer(old), Pointer(new))
 }

util/Arrays.go

@@ -7,11 +7,11 @@ import (
 )
 
 func AsList[T lang.Object](arr []T) collections.List[T] {
-	return &arrayList[T]{arr}
+	return &arrayList[T]{array: arr}
 }
 
 func CheckedGet[T any](array []T, index int) (T, exceptions.Exception) {
 	return exceptions.CatchIndexOutOfBound(func() T {
 		return array[index]
-	}, exceptions.DefaultExceptionConfig().AddSkipStack(3))
+	}, exceptions.Cfg().AddSkipStack(3))
 }

util/Context.go

@@ -0,0 +1,107 @@
+package util
+
+import (
+	"github.com/tursom/GoCollections/lang"
+	"github.com/tursom/GoCollections/lang/atomic"
+	"sync"
+)
+
+var (
+	contextId atomic.Int32
+)
+
+type (
+	Context struct {
+		lang.BaseObject
+		contextId int32
+		keyId     atomic.Int32
+	}
+	ContextMap interface {
+		Get(key *ContextKey[any]) (any, bool)
+		Set(key *ContextKey[any], value any)
+	}
+	ContextKey[T any] struct {
+		lang.BaseObject
+		contextId int32
+		id        int32
+	}
+	contextMapImpl struct {
+		lang.BaseObject
+		contextId int32
+		array     []any
+	}
+	concurrentContextMap struct {
+		contextMapImpl
+		lock sync.Mutex
+	}
+)
+
+func NewContext() *Context {
+	return &Context{
+		contextId: contextId.Add(1),
+	}
+}
+
+func AllocateContextKey[T any](ctx *Context) *ContextKey[T] {
+	return &ContextKey[T]{
+		contextId: ctx.contextId,
+		id:        ctx.keyId.Add(1) - 1,
+	}
+}
+
+func (c *Context) NewMap() ContextMap {
+	return &contextMapImpl{
+		contextId: c.contextId,
+		//array:     make([]any, c.keyId.Load()),
+	}
+}
+
+func (c *Context) NewConcurrentMap() ContextMap {
+	return &concurrentContextMap{
+		contextMapImpl: contextMapImpl{
+			contextId: c.contextId,
+			//array:     make([]any, c.keyId.Load()),
+		},
+	}
+}
+
+func (k *ContextKey[T]) Get(m ContextMap) T {
+	value, _ := k.TryGet(m)
+	return value
+}
+
+func (k *ContextKey[T]) TryGet(m ContextMap) (T, bool) {
+	value, ok := m.Get(k.asNormalKey())
+	return lang.Cast[T](value), ok
+}
+
+func (k *ContextKey[T]) Set(m ContextMap, value T) {
+	m.Set(k.asNormalKey(), value)
+}
+
+func (m *contextMapImpl) Get(key *ContextKey[any]) (any, bool) {
+	if len(m.array) < int(key.id) {
+		return nil, false
+	} else {
+		return m.array[key.id], true
+	}
+}
+
+func (m *contextMapImpl) Set(key *ContextKey[any], value any) {
+	if len(m.array) < int(key.id) {
+		newArray := make([]any, key.id)
+		copy(newArray, m.array)
+		m.array = newArray
+	}
+	m.array[key.id] = value
+}
+
+func (m *concurrentContextMap) Set(key *ContextKey[any], value any) {
+	m.lock.Lock()
+	defer m.lock.Unlock()
+	m.contextMapImpl.Set(key, value)
+}
+
+func (k *ContextKey[T]) asNormalKey() *ContextKey[any] {
+	return (*ContextKey[any])(k)
+}

util/Context_test.go

@@ -0,0 +1,20 @@
+package util
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestContextKey(t *testing.T) {
+	ctx := NewContext()
+	key := AllocateContextKey[int](ctx)
+
+	m := ctx.NewConcurrentMap()
+
+	fmt.Println(key.Get(m))
+	fmt.Println(key.TryGet(m))
+
+	key.Set(m, 100)
+	fmt.Println(key.Get(m))
+	fmt.Println(key.TryGet(m))
+}

util/arrayList.go

@@ -7,6 +7,7 @@ import (
 )
 
 type arrayList[T lang.Object] struct {
+	lang.BaseObject
 	array []T
 }
 
@@ -35,7 +36,7 @@ func (a *arrayList[T]) Get(index int) (T, exceptions.Exception) {
 }
 
 func (a *arrayList[T]) SubList(from, to int) collections.List[T] {
-	return &arrayList[T]{a.array[from:to]}
+	return &arrayList[T]{array: a.array[from:to]}
 }
 
 type arrayListIterator[T lang.Object] struct {
@@ -51,7 +52,7 @@ func (a *arrayListIterator[T]) Next() (r T, err exceptions.Exception) {
 	defer func() {
 		r := recover()
 		if r != nil {
-			err = exceptions.NewNPE(r, nil)
+			err = exceptions.NewNPE("", exceptions.Cfg().SetCause(r))
 		}
 	}()
 	i := a.index

util/arrayList_test.go

@@ -7,7 +7,7 @@ import (
 )
 
 func Test_arrayList_Get(t *testing.T) {
-	l := &arrayList[lang.Int]{[]lang.Int{1, 2}}
+	l := arrayList[lang.Int]{array: []lang.Int{1, 2}}
 	for i := 0; i < l.Size()+1; i++ {
 		r, err := l.Get(i)
 		if err != nil {