params

Documentation

Index

• Constants
• Variables
• func CalcGasLimit(parent *types.Block) uint64
• type ChainConfig
  • func (cfg *ChainConfig) Copy() *ChainConfig
• type ChargeConfig
• type DposConfig
• type FrokedConfig
• type GasTable
• type NameConfig

Constants

const (
	// GenesisGasLimit Gas limit of the Genesis block.
	GenesisGasLimit uint64 = 100000000
	// MinGasLimit Minimum the gas limit may ever be.
	MinGasLimit uint64 = 5000
	// GasLimitBoundDivisor The bound divisor of the gas limit, used in update calculations.
	GasLimitBoundDivisor uint64 = 1024
	// MaximumExtraDataSize Maximum size extra data may be after Genesis.
	MaximumExtraDataSize uint64 = 32 + 65
	// ActionGas Per action not creating a contract. NOTE: Not payable on data of calls between transactions.
	ActionGas uint64 = 21000
	// ActionGasContractCreation Per action that creates a contract. NOTE: Not payable on data of calls between transactions.
	ActionGasContractCreation uint64 = 53000
	// TxDataNonZeroGas Per byte of data attached to a transaction that is not equal to zero. NOTE:Not payable on data of calls between transactions.
	TxDataNonZeroGas uint64 = 68
	// TxDataZeroGas Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions.
	TxDataZeroGas uint64 = 4

	CallValueTransferGas uint64 = 9000  // Paid for CALL when the value transfer is non-zero.
	QuadCoeffDiv         uint64 = 512   // Divisor for the quadratic particle of the memory cost equation.
	SstoreSetGas         uint64 = 20000 // Once per SLOAD operation.
	LogDataGas           uint64 = 8     // Per byte in a LOG* operation's data.
	CallStipend          uint64 = 2300  // Free gas given at beginning of call.

	Sha3Gas         uint64 = 30    // Once per SHA3 operation.
	Sha3WordGas     uint64 = 6     // Once per word of the SHA3 operation's data.
	SstoreResetGas  uint64 = 5000  // Once per SSTORE operation if the zeroness changes from zero.
	JumpdestGas     uint64 = 1     // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
	EpochDuration   uint64 = 30000 // Duration between proof-of-work epochs.
	CreateDataGas   uint64 = 200   //
	CallCreateDepth uint64 = 1024  // Maximum depth of call/create stack.
	LogGas          uint64 = 375   // Per LOG* operation.
	CopyGas         uint64 = 3     //
	StackLimit      uint64 = 1024  // Maximum size of VM stack allowed.
	LogTopicGas     uint64 = 375   // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.
	CreateGas       uint64 = 32000 // Once per CREATE operation & contract-creation transaction.
	MemoryGas       uint64 = 3     // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL.

	MaxCodeSize = 24576 // Maximum bytecode to permit for a contract

	EcrecoverGas            uint64 = 3000   // Elliptic curve sender recovery gas price
	Sha256BaseGas           uint64 = 60     // Base price for a SHA256 operation
	Sha256PerWordGas        uint64 = 12     // Per-word price for a SHA256 operation
	Ripemd160BaseGas        uint64 = 600    // Base price for a RIPEMD160 operation
	Ripemd160PerWordGas     uint64 = 120    // Per-word price for a RIPEMD160 operation
	IdentityBaseGas         uint64 = 15     // Base price for a data copy operation
	IdentityPerWordGas      uint64 = 3      // Per-work price for a data copy operation
	ModExpQuadCoeffDiv      uint64 = 20     // Divisor for the quadratic particle of the big int modular exponentiation
	Bn256AddGas             uint64 = 500    // Gas needed for an elliptic curve addition
	Bn256ScalarMulGas       uint64 = 40000  // Gas needed for an elliptic curve scalar multiplication
	Bn256PairingBaseGas     uint64 = 100000 // Base price for an elliptic curve pairing check
	Bn256PairingPerPointGas uint64 = 80000  // Per-point price for an elliptic curve pairing check
)

const (
	//ClientIdentifier Client identifier to advertise over the network
	ClientIdentifier = "ft"
)

const (
	Fractal = 1e18
)

const (
	// NextForkID is the id of next fork
	NextForkID uint64 = 0
)

Variables

var (
	DifficultyBoundDivisor = big.NewInt(2048)   // The bound divisor of the difficulty, used in the update calculations.
	GenesisDifficulty      = big.NewInt(131072) // Difficulty of the Genesis block.
	MinimumDifficulty      = big.NewInt(131072) // The minimum that the difficulty may ever be.
	DurationLimit          = big.NewInt(13)     // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.
)

var (
	MaxSignDepth  = uint64(10)
	MaxSignLength = uint64(50)
)

var DefaultChainconfig = &ChainConfig{
	BootNodes: []string{},
	ChainID:   big.NewInt(1),
	ChainName: "fractal",
	ChainURL:  "https://fractalproject.com",
	AccountNameCfg: &NameConfig{
		Level:     1,
		Length:    16,
		SubLength: 8,
	},
	AssetNameCfg: &NameConfig{
		Level:     1,
		Length:    16,
		SubLength: 8,
	},
	ChargeCfg: &ChargeConfig{
		AssetRatio:    80,
		ContractRatio: 80,
	},
	ForkedCfg: &FrokedConfig{
		ForkBlockNum:   10000,
		Forkpercentage: 80,
	},
	DposCfg: &DposConfig{
		MaxURLLen:            512,
		UnitStake:            big.NewInt(1000),
		CadidateMinQuantity:  big.NewInt(10),
		VoterMinQuantity:     big.NewInt(1),
		ActivatedMinQuantity: big.NewInt(100),
		BlockInterval:        3000,
		BlockFrequency:       6,
		CadidateScheduleSize: 3,
		DelayEcho:            2,
		ExtraBlockReward:     big.NewInt(1),
		BlockReward:          big.NewInt(5),
	},
	SysName:     "fractal.admin",
	AccountName: "fractal.account",
	DposName:    "fractal.dpos",
	SysToken:    "ftoken",
}

var (
	// GasTable contain the gas re-prices
	GasTableInstanse = GasTable{
		ExtcodeSize: 700,
		ExtcodeCopy: 700,
		Balance:     400,
		SLoad:       200,
		Calls:       700,
		Suicide:     5000,
		ExpByte:     50,

		CreateBySuicide: 25000,
		SetOwner:        200,
		GetAccountTime:  200,
		GetSnapshotTime: 200,
		GetAssetAmount:  200,
		SnapBalance:     200,
		IssueAsset:      200,
		DestroyAsset:    200,
		AddAsset:        200,
		GetAccountID:    200,
		GetDelegate:     200,
		CryptoCalc:      20000,
		CryptoByte:      1000,
	}
)

Variables containing gas prices for different phases.

Functions

func CalcGasLimit

func CalcGasLimit(parent *types.Block) uint64

CalcGasLimit computes the gas limit of the next block after parent. This is miner strategy, not consensus protocol.

Types

type ChainConfig

type ChainConfig struct {
	BootNodes        []string      `json:"bootnodes,omitempty"` // enode URLs of the P2P bootstrap nodes
	ChainID          *big.Int      `json:"chainId,omitempty"`   // chainId identifies the current chain and is used for replay protection
	ChainName        string        `json:"chainName,omitempty"` // chain name
	ChainURL         string        `json:"chainUrl,omitempty"`  // chain url
	AccountNameCfg   *NameConfig   `json:"accountParams,omitempty"`
	AssetNameCfg     *NameConfig   `json:"assetParams,omitempty"`
	ChargeCfg        *ChargeConfig `json:"chargeParams,omitempty"`
	ForkedCfg        *FrokedConfig `json:"upgradeParams,omitempty"`
	DposCfg          *DposConfig   `json:"dposParams,omitempty"`
	SysName          string        `json:"systemName,omitempty"`  // system name
	AccountName      string        `json:"accountName,omitempty"` // system name
	DposName         string        `json:"dposName,omitempty"`    // system name
	SysToken         string        `json:"systemToken,omitempty"` // system token
	SysTokenID       uint64        `json:"sysTokenID,omitempty"`
	SysTokenDecimals uint64        `json:"sysTokenDecimal,omitempty"`
}

ChainConfig is the core config which determines the blockchain settings.

func (*ChainConfig) Copy

func (cfg *ChainConfig) Copy() *ChainConfig

type ChargeConfig

type ChargeConfig struct {
	AssetRatio    uint64 `json:"assetRatio,omitempty"`
	ContractRatio uint64 `json:"contractRatio,omitempty"`
}

type DposConfig

type DposConfig struct {
	MaxURLLen            uint64   `json:"maxURLLen,omitempty"`            // url length
	UnitStake            *big.Int `json:"unitStake,omitempty"`            // state unit
	CadidateMinQuantity  *big.Int `json:"cadidateMinQuantity,omitempty"`  // min quantity
	VoterMinQuantity     *big.Int `json:"voterMinQuantity,omitempty"`     // min quantity
	ActivatedMinQuantity *big.Int `json:"activatedMinQuantity,omitempty"` // min active quantity
	BlockInterval        uint64   `json:"blockInterval,omitempty"`
	BlockFrequency       uint64   `json:"blockFrequency,omitempty"`
	CadidateScheduleSize uint64   `json:"cadidateScheduleSize,omitempty"`
	DelayEcho            uint64   `json:"delayEcho,omitempty"`
	ExtraBlockReward     *big.Int `json:"extraBlockReward,omitempty"`
	BlockReward          *big.Int `json:"blockReward,omitempty"`
}

type FrokedConfig

type FrokedConfig struct {
	ForkBlockNum   uint64 `json:"blockCnt,omitempty"`
	Forkpercentage uint64 `json:"upgradeRatio,omitempty"`
}

type GasTable

type GasTable struct {
	ExtcodeSize uint64
	ExtcodeCopy uint64
	Balance     uint64
	SLoad       uint64
	Calls       uint64
	Suicide     uint64

	ExpByte uint64

	// CreateBySuicide occurs when the
	// refunded account is one that does
	// not exist. This logic is similar
	// to call. May be left nil. Nil means
	// not charged.
	CreateBySuicide uint64
	SetOwner        uint64
	GetAccountTime  uint64
	GetSnapshotTime uint64
	GetAssetAmount  uint64
	SnapBalance     uint64
	IssueAsset      uint64
	DestroyAsset    uint64
	AddAsset        uint64
	GetAccountID    uint64
	GetDelegate     uint64
	CryptoCalc      uint64
	CryptoByte      uint64
}

GasTable organizes gas prices for different phases.

type NameConfig

type NameConfig struct {
	Level     uint64 `json:"level,omitempty"`
	Length    uint64 `json:"length,omitempty"`
	SubLength uint64 `json:"subLength,omitempty"`
}