amhash

Documentation

Overview

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

Index

• Variables
• func CalcDifficulty(config *params.ChainConfig, curVersion string, time uint64, ...) *big.Int
• func Reverse(s []byte) string
• type Amhash
  • func New(config Config) *Amhash
  • func (amhash *Amhash) APIs(chain consensus.ChainReader) []rpc.API
  • func (amhash *Amhash) Author(header *types.Header) (common.Address, error)
  • func (amhash *Amhash) CalcDifficulty(chain consensus.ChainReader, curVersion string, time uint64, ...) (*big.Int, error)
  • func (amhash *Amhash) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDBManage, ...) (*types.Block, error)
  • func (amhash *Amhash) Hashrate() float64
  • func (amhash *Amhash) Prepare(chain consensus.ChainReader, header *types.Header) error
  • func (amhash *Amhash) Seal(chain consensus.ChainReader, header *types.Header, stop <-chan struct{}, ...) (*types.Header, error)
  • func (amhash *Amhash) SetThreads(threads int)
  • func (amhash *Amhash) Threads() int
  • func (amhash *Amhash) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error
  • func (amhash *Amhash) VerifyHeaders(chain consensus.ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error)
  • func (amhash *Amhash) VerifySeal(chain consensus.ChainReader, header *types.Header) error
  • func (amhash *Amhash) VerifySignatures(signature []common.Signature) (bool, error)
  • func (amhash *Amhash) VerifyUncles(chain consensus.ChainReader, block *types.Block) error
• type Config
• type Mode

Variables

var (
	FrontierBlockReward  *big.Int = big.NewInt(5e+18) // Block reward in wei for successfully mining a block
	ByzantiumBlockReward *big.Int = big.NewInt(3e+18) // Block reward in wei for successfully mining a block upward from Byzantium

)

amhash proof-of-work protocol constants.

Functions

func CalcDifficulty

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

func Reverse(s []byte) string

YYYYYYYYYYYYYYYYYYYYYYYYYYY

func combinationData(header *types.Header) []byte {
	headerHash := hashString2LittleEndian(reverseHashString(header.ParentHash.Hex()))
	aiHash := hashString2LittleEndian(reverseHashString(header.AIHash.Hex()))
	//tmpnonce2 := header.Nonce
	nonce, _ := header.Nonce.MarshalText()
	Reverse(nonce)
	header.Nonce.UnmarshalText(nonce)
	nonce32 := uint32ToBytes(uint32(header.Nonce.Uint64()))
	//log.Info("==testID==", "yuan shi nonce", tmpnonce2.Uint64(), "fan zhuan hou de header.Nonce", header.Nonce.Uint64(), "nonce32", nonce32, "headerHash", headerHash)
	databufio := bytes.NewBuffer([]byte{})
	binary.Write(databufio, binary.BigEndian, common.HexToHash(headerHash))
	binary.Write(databufio, binary.BigEndian, common.HexToHash(aiHash))
	binary.Write(databufio, binary.BigEndian, uint64(0)) //coinbase crc64
	binary.Write(databufio, binary.BigEndian, uint32(0)) //extranonce
	binary.Write(databufio, binary.LittleEndian, nonce32)
	return databufio.Bytes()
}

Types

type Amhash

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

Amhash is a consensus engine based on proot-of-work implementing the amhash algorithm.

func New

func New(config Config) *Amhash

New creates a full sized amhash PoW scheme.

func (*Amhash) APIs

func (amhash *Amhash) APIs(chain consensus.ChainReader) []rpc.API

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

func (*Amhash) Author

func (amhash *Amhash) 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 (*Amhash) CalcDifficulty

func (amhash *Amhash) CalcDifficulty(chain consensus.ChainReader, curVersion string, time uint64, parent *types.Header) (*big.Int, error)

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 (*Amhash) Finalize

func (amhash *Amhash) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDBManage, uncles []*types.Header, currencyBlock []types.CurrencyBlock) (*types.Block, error)

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

func (*Amhash) Hashrate

func (amhash *Amhash) Hashrate() float64

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

func (*Amhash) Prepare

func (amhash *Amhash) Prepare(chain consensus.ChainReader, header *types.Header) error

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

func (*Amhash) Seal

func (amhash *Amhash) Seal(chain consensus.ChainReader, header *types.Header, stop <-chan struct{}, isBroadcastNode bool) (*types.Header, error)

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

func (*Amhash) SetThreads

func (amhash *Amhash) 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 (*Amhash) Threads

func (amhash *Amhash) Threads() int

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

func (*Amhash) VerifyHeader

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

VerifyHeader checks whether a header conforms to the consensus rules of the stock Matrix amhash engine.

func (*Amhash) VerifyHeaders

func (amhash *Amhash) 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 (*Amhash) VerifySeal

func (amhash *Amhash) VerifySeal(chain consensus.ChainReader, header *types.Header) error

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

func (*Amhash) VerifySignatures

func (amhash *Amhash) VerifySignatures(signature []common.Signature) (bool, error)

VerifyHeader checks whether a header conforms to the consensus rules of the stock Matrix amhash engine.

func (*Amhash) VerifyUncles

func (amhash *Amhash) VerifyUncles(chain consensus.ChainReader, block *types.Block) error

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

type Config

type Config struct {
	PowMode          Mode
	PictureStorePath string
}

Config are the configuration parameters of the amhash.

type Mode

type Mode uint

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

const (
	ModeNormal Mode = iota
	ModeShared
	ModeTest
	ModeFake
	ModeFullFake
)