59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package pow
|
|
|
|
import (
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
)
|
|
|
|
type Block interface {
|
|
Difficulty() *big.Int
|
|
HashNoNonce() common.Hash
|
|
Nonce() uint64
|
|
MixDigest() common.Hash
|
|
NumberU64() uint64
|
|
}
|
|
|
|
type ChainManager interface {
|
|
GetBlockByNumber(uint64) *types.Block
|
|
CurrentBlock() *types.Block
|
|
}
|
|
|
|
type PoW interface {
|
|
Verify(block Block) error
|
|
Search(block Block, stop <-chan struct{}) (uint64, []byte)
|
|
Hashrate() float64
|
|
}
|
|
|
|
// FakePow is a non-validating proof of work implementation.
|
|
// It returns true from Verify for any block.
|
|
type FakePow struct{}
|
|
|
|
// Verify implements PoW, returning a success for an input.
|
|
func (pow FakePow) Verify(block Block) error { return nil }
|
|
|
|
// Search implements PoW, returning the nonce 0 for any call.
|
|
func (pow FakePow) Search(block Block, stop <-chan struct{}) (uint64, []byte) {
|
|
return 0, nil
|
|
}
|
|
|
|
// Hashrate implements PoW, returning 0.
|
|
func (pow FakePow) Hashrate() float64 { return 0 }
|