util

package
v0.0.7 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Dec 19, 2018 License: BSD-2-Clause Imports: 20 Imported by: 122

Documentation

Index

Constants

View Source 
const (
	IoMaxSize = 1024
	MaxSize   = 0x02000000
)
View Source 
const (
	// SatoshiPerBitcent is the number of satoshi in one bitcoin cent.
	SatoshiPerBitcent = 1e6

	// SatoshiPerBitcoin is the number of satoshi in one bitcoin (1 BTC).
	SatoshiPerBitcoin = 1e8

	// MaxSatoshi is the maximum transaction amount allowed in satoshi.
	MaxSatoshi = 21e6 * SatoshiPerBitcoin

	/*OneMegaByte 1MB */
	OneMegaByte uint64 = 1000000
)
View Source 
const (
	COIN     int64 = 100000000
	MaxMoney       = 21000000 * COIN
	// MinFeeRate minimum and Maximum values for tracking feeRates
	MinFeeRate  int64   = 10
	MaxFee      int64   = 1e7
	InfFeeRate  int64   = MaxMoney
	InfPriority float64 = 1e9 * float64(MaxMoney)

	DefaultMinRelayTxFeePerK int64 = 1000

	//FeeSpacing we have to lump transactions into buckets based on feeRate, but we want to be
	// able to give accurate estimates over a large range of potential feeRates.
	// Therefore it makes sense to exponentially space the buckets
	FeeSpacing   float64 = 1.1
	CurrencyUnit         = "BCH"
)
View Source 
const (
	// MaxBlockConfirms track confirm delays up to 25 blocks, can't estimate beyond that
	MaxBlockConfirms uint = 25

	// DefaultDecay decay of .998 is a half-life of 346 blocks or about 2.4 days
	DefaultDecay float64 = .998

	// MinSuccessPct require greater than 95% of X feeRate transactions to be confirmed within Y
	// blocks for X to be big enough
	MinSuccessPct float64 = .95

	// SufficientFeeTxs Require an avg of 1 tx in the combined feeRate bucket per block to have stat
	// significance
	SufficientFeeTxs float64 = 1
)
View Source 
const (
	Hash256Size       = 32
	MaxHashStringSize = Hash256Size * 2
	Hash160Size       = 20
)

Variables

View Source 
var HashOne = Hash{0x0000000000000000000000000000000000000000000000000000000000000001}
View Source 
var HashZero = Hash{0x0000000000000000000000000000000000000000000000000000000000000000}

Functions

func DoubleSha256Bytes 

func DoubleSha256Bytes(b []byte) []byte

func EncodeVarLenInt 

func EncodeVarLenInt(n uint64) []byte

func GetAdjustedTimeSec added in v0.0.5 

func GetAdjustedTimeSec() int64

func GetHashBytesFromStr 

func GetHashBytesFromStr(src string) (bytes []byte, err error)

func GetRand 

func GetRand(nMax uint64) uint64

func GetRandInt 

func GetRandInt(nMax int) int

func GetTimeMicroSec added in v0.0.5 

func GetTimeMicroSec() int64

func GetTimeOffsetSec added in v0.0.5 

func GetTimeOffsetSec() int64

func GetTimeSec added in v0.0.5 

func GetTimeSec() int64

func GetUint64FromReder 

func GetUint64FromReder(r io.Reader) (uint64, error)

func Hash160 

func Hash160(buf []byte) []byte

Hash160 calculates the hash ripemd160(sha256(b)).

func InsecureRand32 

func InsecureRand32() uint32

InsecureRand32 create a random number in [0 math.MaxUint32]

func InsecureRand64 

func InsecureRand64() uint64

func MaxI 

func MaxI(a, b int64) int64

func MaxI32 

func MaxI32(a, b int32) int32

func MaxU 

func MaxU(a, b uint64) uint64

func MaxU32 

func MaxU32(a, b uint32) uint32

func MinI 

func MinI(a, b int64) int64

func MinI32 

func MinI32(a, b int32) int32

func MinU 

func MinU(a, b uint64) uint64

func MinU32 

func MinU32(a, b uint32) uint32

func RandomUint64 

func RandomUint64() (uint64, error)

func ReadElements 

func ReadElements(r io.Reader, elements ...interface{}) error

func ReadVarBytes 

func ReadVarBytes(r io.Reader, maxAllowed uint64, fieldName string) ([]byte, error)

func ReadVarInt 

func ReadVarInt(r io.Reader) (uint64, error)

func ReadVarLenInt 

func ReadVarLenInt(r io.Reader) (uint64, error)

func ReadVarString 

func ReadVarString(r io.Reader) (string, error)

func Ripemd160 

func Ripemd160(buf []byte) []byte

func SetMockTime 

func SetMockTime(time int64)

func Sha1 

func Sha1(buf []byte) [20]byte

func Sha256Bytes 

func Sha256Bytes(b []byte) []byte

func SipHash 

func SipHash(k0, k1 uint64, hash []byte) uint64

func SipHashExtra 

func SipHashExtra(k0, k1 uint64, hash []byte, extra uint32) uint64

func Swap 

func Swap(s *Stack, other *Stack)

func VarIntSerializeSize 

func VarIntSerializeSize(val uint64) uint32

func VarLenIntSize 

func VarLenIntSize(n uint64) uint

func WriteElements 

func WriteElements(w io.Writer, elements ...interface{}) error

func WriteVarBytes 

func WriteVarBytes(w io.Writer, bytes []byte) error

func WriteVarInt 

func WriteVarInt(w io.Writer, val uint64) error

func WriteVarLenInt 

func WriteVarLenInt(w io.Writer, n uint64) error

func WriteVarString 

func WriteVarString(w io.Writer, str string) error

Types

type BinaryFreeList 

type BinaryFreeList chan []byte
var BinarySerializer BinaryFreeList = make(chan []byte, IoMaxSize)

func (BinaryFreeList) Borrow 

func (b BinaryFreeList) Borrow() (buf []byte)

func (BinaryFreeList) PutUint16 

func (b BinaryFreeList) PutUint16(w io.Writer, byteOrder binary.ByteOrder, val uint16) error

func (BinaryFreeList) PutUint32 

func (b BinaryFreeList) PutUint32(w io.Writer, byteOrder binary.ByteOrder, val uint32) error

func (BinaryFreeList) PutUint64 

func (b BinaryFreeList) PutUint64(w io.Writer, byteOrder binary.ByteOrder, val uint64) error

func (BinaryFreeList) PutUint8 

func (b BinaryFreeList) PutUint8(w io.Writer, val uint8) error

func (BinaryFreeList) Return 

func (b BinaryFreeList) Return(buf []byte)

func (BinaryFreeList) Uint16 

func (b BinaryFreeList) Uint16(r io.Reader, byteOrder binary.ByteOrder) (uint16, error)

func (BinaryFreeList) Uint32 

func (b BinaryFreeList) Uint32(r io.Reader, byteOrder binary.ByteOrder) (uint32, error)

func (BinaryFreeList) Uint64 

func (b BinaryFreeList) Uint64(r io.Reader, byteOrder binary.ByteOrder) (uint64, error)

func (BinaryFreeList) Uint8 

func (b BinaryFreeList) Uint8(r io.Reader) (uint8, error)

type FastRandomContext 

type FastRandomContext struct {
	// contains filtered or unexported fields
}

func NewFastRandomContext 

func NewFastRandomContext(fDeterministic bool) *FastRandomContext

func (*FastRandomContext) Rand32 

func (f *FastRandomContext) Rand32() uint32

type FeeRate 

type FeeRate struct {
	SataoshisPerK int64
}

FeeRate : Fee rate in satoshis per kilobyte: Amount / kB

func NewFeeRate 

func NewFeeRate(amount int64) *FeeRate

func NewFeeRateWithSize 

func NewFeeRateWithSize(feePaid int64, bytes int64) *FeeRate

func Unserialize 

func Unserialize(reader io.Reader) (*FeeRate, error)

func (*FeeRate) GetFee 

func (feeRate *FeeRate) GetFee(bytes int) int64

GetFee : Return the fee in satoshis for the given size in bytes.

func (*FeeRate) GetFeePerK 

func (feeRate *FeeRate) GetFeePerK() int64

GetFeePerK : Return the fee in satoshis for a size of 1000 bytes

func (*FeeRate) Less 

func (feeRate *FeeRate) Less(b FeeRate) bool

func (*FeeRate) Serialize 

func (feeRate *FeeRate) Serialize(writer io.Writer) error

func (*FeeRate) SerializeSize 

func (feeRate *FeeRate) SerializeSize() int

func (*FeeRate) String 

func (feeRate *FeeRate) String() string

type Hash 

type Hash [Hash256Size]byte

func DoubleSha256Hash 

func DoubleSha256Hash(b []byte) Hash

func GetHashFromStr 

func GetHashFromStr(hashStr string) (hash *Hash, err error)

func GetRandHash 

func GetRandHash() *Hash

func HashFromString 

func HashFromString(hexString string) *Hash

func Sha256Hash 

func Sha256Hash(b []byte) Hash

func (*Hash) Cmp 

func (hash *Hash) Cmp(other *Hash) int

func (*Hash) Decode 

func (hash *Hash) Decode(r io.Reader) (int, error)

func (*Hash) Encode 

func (hash *Hash) Encode(w io.Writer) (int, error)

func (*Hash) EncodeSize 

func (hash *Hash) EncodeSize() uint32

func (*Hash) GetCloneBytes 

func (hash *Hash) GetCloneBytes() []byte

func (*Hash) IsEqual 

func (hash *Hash) IsEqual(target *Hash) bool

func (*Hash) IsNull 

func (hash *Hash) IsNull() bool

func (*Hash) Serialize 

func (hash *Hash) Serialize(w io.Writer) (int, error)

func (*Hash) SerializeSize 

func (hash *Hash) SerializeSize() uint32

func (Hash) String 

func (hash Hash) String() string

func (*Hash) ToBigInt 

func (hash *Hash) ToBigInt() *big.Int

func (*Hash) Unserialize 

func (hash *Hash) Unserialize(r io.Reader) (int, error)

type MedianTime added in v0.0.4 

type MedianTime struct {
	// contains filtered or unexported fields
}

func GetMedianTimeSource added in v0.0.6 

func GetMedianTimeSource() *MedianTime

func (*MedianTime) AddTimeSample added in v0.0.4 

func (medianTime *MedianTime) AddTimeSample(sourceID string, timeVal time.Time)

type SipHasher 

type SipHasher struct {
	// contains filtered or unexported fields
}

func NewSipHasher 

func NewSipHasher(k0, k1 uint64) *SipHasher

func (*SipHasher) Finalize 

func (sh *SipHasher) Finalize() uint64

func (*SipHasher) Write 

func (sh *SipHasher) Write(data []byte) *SipHasher

func (*SipHasher) WriteUint64 

func (sh *SipHasher) WriteUint64(data uint64) *SipHasher

type Stack 

type Stack struct {
	// contains filtered or unexported fields
}

func NewStack 

func NewStack() *Stack

func (*Stack) Copy 

func (s *Stack) Copy() *Stack

func (*Stack) CountBool 

func (s *Stack) CountBool(val bool) int

func (*Stack) Empty 

func (s *Stack) Empty() bool

func (*Stack) Equal added in v0.0.3 

func (s *Stack) Equal(other *Stack) bool

func (*Stack) Erase 

func (s *Stack) Erase(begin int, end int) bool

func (*Stack) Insert 

func (s *Stack) Insert(index int, value interface{}) bool

func (*Stack) Pop 

func (s *Stack) Pop() interface{}

func (*Stack) Push 

func (s *Stack) Push(value interface{})

func (*Stack) RemoveAt 

func (s *Stack) RemoveAt(index int) bool

func (*Stack) SetTop 

func (s *Stack) SetTop(i int, value interface{}) bool

func (*Stack) Size 

func (s *Stack) Size() int

func (*Stack) Swap 

func (s *Stack) Swap(i int, j int) bool

func (*Stack) Top 

func (s *Stack) Top(i int) interface{}

Source Files

View all Source files

Directories

Path Synopsis
algorithm
mapcontainer
mapcontainer/skiplist
Package base58 provides an API for working with modified base58 and Base58Check encodings.
 Package base58 provides an API for working with modified base58 and Base58Check encodings.

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