mirror of https://github.com/poanetwork/quorum.git
110 lines
2.1 KiB
Go
110 lines
2.1 KiB
Go
package miner
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import (
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"sync"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/pow"
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)
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type CpuAgent struct {
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mu sync.Mutex
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workCh chan *types.Block
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quit chan struct{}
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quitCurrentOp chan struct{}
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returnCh chan<- *types.Block
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index int
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pow pow.PoW
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}
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func NewCpuAgent(index int, pow pow.PoW) *CpuAgent {
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miner := &CpuAgent{
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pow: pow,
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index: index,
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}
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return miner
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}
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func (self *CpuAgent) Work() chan<- *types.Block { return self.workCh }
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func (self *CpuAgent) Pow() pow.PoW { return self.pow }
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func (self *CpuAgent) SetReturnCh(ch chan<- *types.Block) { self.returnCh = ch }
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func (self *CpuAgent) Stop() {
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self.mu.Lock()
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defer self.mu.Unlock()
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close(self.quit)
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}
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func (self *CpuAgent) Start() {
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self.mu.Lock()
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defer self.mu.Unlock()
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self.quit = make(chan struct{})
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// creating current op ch makes sure we're not closing a nil ch
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// later on
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self.workCh = make(chan *types.Block, 1)
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go self.update()
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}
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func (self *CpuAgent) update() {
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out:
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for {
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select {
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case block := <-self.workCh:
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self.mu.Lock()
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if self.quitCurrentOp != nil {
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close(self.quitCurrentOp)
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}
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self.quitCurrentOp = make(chan struct{})
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go self.mine(block, self.quitCurrentOp)
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self.mu.Unlock()
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case <-self.quit:
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self.mu.Lock()
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if self.quitCurrentOp != nil {
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close(self.quitCurrentOp)
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self.quitCurrentOp = nil
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}
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self.mu.Unlock()
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break out
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}
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}
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done:
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// Empty work channel
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for {
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select {
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case <-self.workCh:
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default:
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close(self.workCh)
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break done
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}
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}
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}
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func (self *CpuAgent) mine(block *types.Block, stop <- chan struct{}) {
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glog.V(logger.Debug).Infof("(re)started agent[%d]. mining...\n", self.index)
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// Mine
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nonce, mixDigest := self.pow.Search(block, stop)
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if nonce != 0 {
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block.SetNonce(nonce)
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block.Header().MixDigest = common.BytesToHash(mixDigest)
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self.returnCh <- block
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} else {
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self.returnCh <- nil
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}
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}
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func (self *CpuAgent) GetHashRate() int64 {
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return self.pow.GetHashrate()
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}
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