aquahash

package
v1.7.15 Latest Latest
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Published: Sep 30, 2022 License: GPL-3.0 Imports: 33 Imported by: 6

Documentation

Overview

Package aquahash implements the aquahash proof-of-work consensus engine.

Index

Constants

This section is empty.

Variables

View Source
var (
	EthFrontierBlockReward  = big.NewInt(5e+18) // Block reward in wei for successfully mining a block
	EthByzantiumBlockReward = big.NewInt(3e+18) // Block reward in wei for successfully mining a block upward from Byzantium

)

Ethash proof-of-work protocol constants.

View Source
var (
	BlockReward = params.BlockReward
)

Aquahash proof-of-work protocol constants.

View Source
var ErrInvalidDumpMagic = errors.New("invalid dump magic")

Functions

func CalcDifficulty

func CalcDifficulty(config *params.ChainConfig, time uint64, parent, grandparent *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 EthCalcDifficulty added in v1.7.9

func EthCalcDifficulty(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 MakeCache

func MakeCache(block uint64, dir string)

MakeCache generates a new aquahash cache and optionally stores it to disk.

func MakeDataset

func MakeDataset(block uint64, dir string)

MakeDataset generates a new aquahash dataset and optionally stores it to disk.

func SeedHash

func SeedHash(block uint64, version byte) []byte

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

Types

type Aquahash

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

Aquahash is a consensus engine based on proot-of-work implementing the aquahash algorithm.

func New

func New(config Config) *Aquahash

New creates a full sized aquahash PoW scheme.

func NewFakeDelayer

func NewFakeDelayer(delay time.Duration) *Aquahash

NewFakeDelayer creates a aquahash 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 Aquachain consensus rules.

func NewFakeFailer

func NewFakeFailer(fail uint64) *Aquahash

NewFakeFailer creates a aquahash 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 Aquachain consensus rules.

func NewFaker

func NewFaker() *Aquahash

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

func NewFullFaker

func NewFullFaker() *Aquahash

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

func NewShared

func NewShared() *Aquahash

NewShared creates a full sized aquahash PoW shared between all requesters running in the same process.

func NewTester

func NewTester() *Aquahash

NewTester creates a small sized aquahash PoW scheme useful only for testing purposes.

func (*Aquahash) APIs

func (aquahash *Aquahash) APIs(chain consensus.ChainReader) []rpc.API

APIs implements consensus.Engine, returning the user facing RPC APIs. Currently that is empty.

func (*Aquahash) Author

func (aquahash *Aquahash) 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 (*Aquahash) CalcDifficulty

func (aquahash *Aquahash) CalcDifficulty(chain consensus.ChainReader, time uint64, parent, grandparent *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 (*Aquahash) Finalize

func (aquahash *Aquahash) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error)

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

func (*Aquahash) Hashrate

func (aquahash *Aquahash) Hashrate() float64

Hashrate implements PoW, returning the measured rate of the search invocations per second over the last minute.

func (*Aquahash) Prepare

func (aquahash *Aquahash) Prepare(chain consensus.ChainReader, header *types.Header) error

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

func (*Aquahash) Seal

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

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

func (*Aquahash) SetThreads

func (aquahash *Aquahash) 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 (*Aquahash) Threads

func (aquahash *Aquahash) Threads() int

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

func (*Aquahash) VerifyHeader

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

VerifyHeader checks whether a header conforms to the consensus rules of the stock Aquachain aquahash engine.

func (*Aquahash) VerifyHeaders

func (aquahash *Aquahash) 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 (*Aquahash) VerifySeal

func (aquahash *Aquahash) VerifySeal(chain consensus.ChainReader, header *types.Header) error

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

func (*Aquahash) VerifyUncles

func (aquahash *Aquahash) VerifyUncles(chain consensus.ChainReader, block *types.Block) error

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

type Config

type Config struct {
	CacheDir       string
	CachesInMem    int
	CachesOnDisk   int
	DatasetDir     string
	DatasetsInMem  int
	DatasetsOnDisk int
	PowMode        Mode
	StartVersion   byte
}

Config are the configuration parameters of the aquahash.

type Mode

type Mode uint

Mode defines the type and amount of PoW verification an aquahash engine makes.

const (
	ModeNormal Mode = iota
	ModeShared
	ModeTest
	ModeFake
	ModeFullFake
)

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