eccpow

package
v0.0.0-...-c337f2d Latest Latest
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 Go to latest Published: Dec 27, 2020 License: GPL-3.0 Imports: 27 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	BigInfinity = 1000000.0
	Inf         = 64.0
	MaxNonce    = 1<<32 - 1
)

Parameters for matrix and seed

Variables

View Source 
var (
	MinimumDifficulty   = ProbToDifficulty(Table[0].miningProb)
	BlockGenerationTime = big.NewInt(36)
	Sensitivity         = big.NewInt(8)
)

"github.com/ethereum/go-ethereum/consensus/ethash/consensus.go" Some weird constants to avoid constant memory allocs for them.

View Source 
var (
	FrontierBlockReward       = big.NewInt(5e+18) // Block reward in wei for successfully mining a block
	ByzantiumBlockReward      = big.NewInt(3e+18) // Block reward in wei for successfully mining a block upward from Byzantium
	ConstantinopleBlockReward = big.NewInt(2e+18) // Block reward in wei for successfully mining a block upward from Constantinople

)

ecc proof-of-work protocol constants.

View Source 
var Table = []difficulty{}/* 381 elements not displayed */

Table is difficulty table slice

Functions

func BigIntToFloat 

func BigIntToFloat(val *big.Int) float64

BigIntToFloat convert big int to float64

func CalcDifficulty 

func CalcDifficulty(config *params.ChainConfig, time uint64, parent *types.Header) *big.Int

CalcDifficulty is the difficulty adjustment algorithm. It returns the difficulty that a new block should have when created at time given the parent block's time and difficulty.

func DifficultyToProb 

func DifficultyToProb(difficulty *big.Int) float64

DifficultyToProb convert difficulty to probability of table

func FloatToBigInt 

func FloatToBigInt(val float64) *big.Int

FloatToBigInt convert float64 to big integer

func MakeDecision 

func MakeDecision(header *types.Header, colInRow [][]int, outputWord []int) bool

MakeDecision check outputWord is valid or not using colInRow

func MakeLDPCDifficultyCalculator 

func MakeLDPCDifficultyCalculator() func(time uint64, parent *types.Header) *big.Int

MakeLDPCDifficultyCalculator calculate difficulty using difficulty table

func OptimizedDecoding 

func OptimizedDecoding(parameters Parameters, hashVector []int, H, rowInCol, colInRow [][]int) ([]int, []int, [][]float64)

OptimizedDecoding return hashVector, outputWord, LRrtl

func ProbToDifficulty 

func ProbToDifficulty(miningProb float64) *big.Int

ProbToDifficulty convert probability to difficulty of header

func RunOptimizedConcurrencyLDPC 

func RunOptimizedConcurrencyLDPC(header *types.Header, hash []byte) (bool, []int, []int, uint64, []byte)

RunOptimizedConcurrencyLDPC use goroutine for mining block

func SearchLevel 

func SearchLevel(difficulty *big.Int) int

SearchLevel return next level by using currentDifficulty of header Type of Ethereum difficulty is *bit.Int so arg is *big.int

func SeedHash 

func SeedHash(block *types.Block) []byte

// SeedHash is the seed to use for generating a verification cache and the mining // dataset.

func VerifyOptimizedDecoding 

func VerifyOptimizedDecoding(header *types.Header, hash []byte) (bool, []int, []int, []byte)

VerifyOptimizedDecoding return bool, hashVector, outputword, digest which are used for validation

Types

type API 

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

API exposes ecc related methods for the RPC interface.

func (*API) Geccrate 

func (api *API) Geccrate() uint64

Geccrate returns the current hashrate for local CPU miner and remote miner.

func (*API) GetWork 

func (api *API) GetWork() ([4]string, error)

GetWork returns a work package for external miner.

The work package consists of 3 strings: 

result[0] - 32 bytes hex encoded current block header pow-hash
result[1] - 32 bytes hex encoded seed hash used for DAG
result[2] - 32 bytes hex encoded boundary condition ("target"), 2^256/difficulty
result[3] - hex encoded block number

func (*API) SubmitHashRate 

func (api *API) SubmitHashRate(rate hexutil.Uint64, id common.Hash) bool

SubmitHashrate can be used for remote miners to submit their hash rate. This enables the node to report the combined hash rate of all miners which submit work through this node.

It accepts the miner hash rate and an identifier which must be unique between nodes.

func (*API) SubmitWork 

func (api *API) SubmitWork(nonce types.BlockNonce, hash, digest common.Hash) bool

SubmitWork can be used by external miner to submit their POW solution. It returns an indication if the work was accepted. Note either an invalid solution, a stale work a non-existent work will return false.

type Config 

type Config struct {
	PowMode Mode
}

Config are the configuration parameters of the ethash.

type ECC 

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

func New 

func New(config Config, notify []string, noverify bool) *ECC

New creates a full sized ethash PoW scheme and starts a background thread for remote mining, also optionally notifying a batch of remote services of new work packages.

func NewFakeDelayer 

func NewFakeDelayer(delay time.Duration) *ECC

NewFakeDelayer creates a ethash consensus engine with a fake PoW scheme that accepts all blocks as valid, but delays verifications by some time, though they still have to conform to the Ethereum consensus rules.

func NewFakeFailer 

func NewFakeFailer(fail uint64) *ECC

NewFakeFailer creates a ethash consensus engine with a fake PoW scheme that accepts all blocks as valid apart from the single one specified, though they still have to conform to the Ethereum consensus rules.

func NewFaker 

func NewFaker() *ECC

NewFaker creates a ethash consensus engine with a fake PoW scheme that accepts all blocks' seal as valid, though they still have to conform to the Ethereum consensus rules.

func NewFullFaker 

func NewFullFaker() *ECC

NewFullFaker creates an ethash consensus engine with a full fake scheme that accepts all blocks as valid, without checking any consensus rules whatsoever.

func NewTester 

func NewTester(notify []string, noverify bool) *ECC

func (*ECC) APIs 

func (ecc *ECC) APIs(chain consensus.ChainReader) []rpc.API

APIs implements consensus.Engine, returning the user facing RPC APIs.

func (*ECC) Author 

func (ecc *ECC) Author(header *types.Header) (common.Address, error)

Author implements consensus.Engine, returning the header's coinbase as the proof-of-work verified author of the block.

func (*ECC) CalcDifficulty 

func (ecc *ECC) CalcDifficulty(chain consensus.ChainReader, time uint64, parent *types.Header) *big.Int

CalcDifficulty is the difficulty adjustment algorithm. It returns the difficulty that a new block should have when created at time given the parent block's time and difficulty.

func (*ECC) Close 

func (ecc *ECC) Close() error

Close closes the exit channel to notify all backend threads exiting.

func (*ECC) Finalize 

func (ecc *ECC) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header)

Finalize implements consensus.Engine, accumulating the block and uncle rewards, setting the final state and assembling the block.

func (*ECC) FinalizeAndAssemble 

func (ecc *ECC) FinalizeAndAssemble(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error)

func (*ECC) Hashrate 

func (ecc *ECC) Hashrate() float64

Hashrate implements PoW, returning the measured rate of the search invocations per second over the last minute. Note the returned hashrate includes local hashrate, but also includes the total hashrate of all remote miner.

func (*ECC) Prepare 

func (ecc *ECC) Prepare(chain consensus.ChainReader, header *types.Header) error

Prepare implements consensus.Engine, initializing the difficulty field of a header to conform to the ecc protocol. The changes are done inline.

func (*ECC) Seal 

func (ecc *ECC) Seal(chain consensus.ChainReader, block *types.Block, results chan<- *types.Block, stop <-chan struct{}) error

Seal implements consensus.Engine, attempting to find a nonce that satisfies the block's difficulty requirements.

func (*ECC) SealHash 

func (ecc *ECC) SealHash(header *types.Header) (hash common.Hash)

SealHash returns the hash of a block prior to it being sealed.

func (*ECC) SetThreads 

func (ecc *ECC) SetThreads(threads int)

SetThreads updates the number of mining threads currently enabled. Calling this method does not start mining, only sets the thread count. If zero is specified, the miner will use all cores of the machine. Setting a thread count below zero is allowed and will cause the miner to idle, without any work being done.

func (*ECC) Threads 

func (ecc *ECC) Threads() int

Threads returns the number of mining threads currently enabled. This doesn't necessarily mean that mining is running!

func (*ECC) VerifyHeader 

func (ecc *ECC) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error

VerifyHeader checks whether a header conforms to the consensus rules of the stock Ethereum ecc engine.

func (*ECC) VerifyHeaders 

func (ecc *ECC) VerifyHeaders(chain consensus.ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error)

VerifyHeaders is similar to VerifyHeader, but verifies a batch of headers concurrently. The method returns a quit channel to abort the operations and a results channel to retrieve the async verifications.

func (*ECC) VerifySeal 

func (ecc *ECC) VerifySeal(chain consensus.ChainReader, header *types.Header) error

VerifySeal implements consensus.Engine, checking whether the given block satisfies the PoW difficulty requirements.

func (*ECC) VerifyUncles 

func (ecc *ECC) VerifyUncles(chain consensus.ChainReader, block *types.Block) error

VerifyUncles verifies that the given block's uncles conform to the consensus rules of the stock Ethereum ecc engine.

type Mode 

type Mode uint
const (
	ModeNormal Mode = iota
	//ModeShared
	ModeTest
	ModeFake
	ModeFullFake
)

type Parameters 

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

Source Files

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