Documentation
¶
Index ¶
- Constants
- func GetBytesFromPtr(ptr unsafe.Pointer, length int) []byte
- func Slice(s string) []byte
- type MemAwareMap
- func (m *MemAwareMap[K, V]) Count() int
- func (m *MemAwareMap[K, V]) Empty() bool
- func (m *MemAwareMap[K, V]) Exist(val K) bool
- func (m *MemAwareMap[K, V]) Get(k K) (v V, ok bool)
- func (m *MemAwareMap[K, V]) Init(v map[K]V) int64
- func (m *MemAwareMap[K, V]) Len() int
- func (m *MemAwareMap[K, V]) MockSeedForTest(seed uint64) (oriSeed uint64)
- func (m *MemAwareMap[K, V]) RealBytes() uint64
- func (m *MemAwareMap[K, V]) Set(key K, value V) (deltaBytes int64)
- func (m *MemAwareMap[K, V]) SetExt(key K, value V) (deltaBytes int64, insert bool)
- type MutableString
- type SwissMapWrap
Constants ¶
const ( DefBucketMemoryUsageForMapStringToAny = 312 DefBucketMemoryUsageForSetString = 248 DefBucketMemoryUsageForSetFloat64 = 184 DefBucketMemoryUsageForSetInt64 = 184 )
Memory usage constants for swiss map
Variables ¶
This section is empty.
Functions ¶
func GetBytesFromPtr ¶
GetBytesFromPtr return a bytes array from the given ptr and length
Types ¶
type MemAwareMap ¶
type MemAwareMap[K comparable, V any] struct { M map[K]V Bytes uint64 // contains filtered or unexported fields }
MemAwareMap is a map with memory usage tracking.
func NewMemAwareMap ¶
func NewMemAwareMap[K comparable, V any](capacity int) *MemAwareMap[K, V]
NewMemAwareMap creates a new MemAwareMap with the given initial capacity.
func (*MemAwareMap[K, V]) Count ¶
func (m *MemAwareMap[K, V]) Count() int
Count returns the number of elements in the map.
func (*MemAwareMap[K, V]) Empty ¶
func (m *MemAwareMap[K, V]) Empty() bool
Empty returns true if the map is empty.
func (*MemAwareMap[K, V]) Exist ¶
func (m *MemAwareMap[K, V]) Exist(val K) bool
Exist returns true if the key exists in the map.
func (*MemAwareMap[K, V]) Get ¶
func (m *MemAwareMap[K, V]) Get(k K) (v V, ok bool)
Get the value of the key.
func (*MemAwareMap[K, V]) Init ¶
func (m *MemAwareMap[K, V]) Init(v map[K]V) int64
Init initializes the MemAwareMap with the given map and returns the initial memory size. The input map should NOT be nil.
func (*MemAwareMap[K, V]) Len ¶
func (m *MemAwareMap[K, V]) Len() int
Len returns the number of elements in the map.
func (*MemAwareMap[K, V]) MockSeedForTest ¶
func (m *MemAwareMap[K, V]) MockSeedForTest(seed uint64) (oriSeed uint64)
MockSeedForTest sets the seed of the swissMap inside MemAwareMap
func (*MemAwareMap[K, V]) RealBytes ¶
func (m *MemAwareMap[K, V]) RealBytes() uint64
RealBytes returns the real memory size of the map. Compute the real size is expensive, so do not call it frequently. Make sure the `seed` is same when testing the memory size.
func (*MemAwareMap[K, V]) Set ¶
func (m *MemAwareMap[K, V]) Set(key K, value V) (deltaBytes int64)
Set sets the value for the key in the map and returns the memory delta.
func (*MemAwareMap[K, V]) SetExt ¶
func (m *MemAwareMap[K, V]) SetExt(key K, value V) (deltaBytes int64, insert bool)
SetExt sets the value for the key in the map and returns the memory delta and whether it's an insert.
type MutableString ¶
type MutableString string
MutableString can be used as string via string(MutableString) without performance loss.
func String ¶
func String(b []byte) MutableString
String converts slice to MutableString without copy. The MutableString can be converts to string without copy. Use it at your own risk.
type SwissMapWrap ¶
type SwissMapWrap struct {
Type *swissMapType
Data *swissMap
}
SwissMapWrap is a wrapper of map to access its internal structure.
func ToSwissMap ¶
func ToSwissMap[K comparable, V any](m map[K]V) (sm SwissMapWrap)
ToSwissMap converts a map to SwissMapWrap.
func (*SwissMapWrap) Size ¶
func (m *SwissMapWrap) Size() uint64
Size returns the accurate memory size
Source Files