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package miner
import (
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/pow"
)
type CpuMiner struct {
c chan *types.Block
quit chan struct{}
quitCurrentOp chan struct{}
returnCh chan<- Work
index int
pow pow.PoW
}
func NewCpuMiner(index int, pow pow.PoW) *CpuMiner {
miner := &CpuMiner{
pow: pow,
index: index,
}
return miner
}
func (self *CpuMiner) Work() chan<- *types.Block { return self.c }
func (self *CpuMiner) Pow() pow.PoW { return self.pow }
func (self *CpuMiner) SetWorkCh(ch chan<- Work) { self.returnCh = ch }
func (self *CpuMiner) Stop() {
close(self.quit)
close(self.quitCurrentOp)
}
func (self *CpuMiner) Start() {
self.quit = make(chan struct{})
self.quitCurrentOp = make(chan struct{}, 1)
self.c = make(chan *types.Block, 1)
go self.update()
}
func (self *CpuMiner) update() {
justStarted := true
out:
for {
select {
case block := <-self.c:
if justStarted {
justStarted = true
} else {
self.quitCurrentOp <- struct{}{}
}
go self.mine(block)
case <-self.quit:
break out
}
}
done:
// Empty channel
for {
select {
case <-self.c:
default:
close(self.c)
break done
}
}
}
func (self *CpuMiner) mine(block *types.Block) {
minerlogger.Infof("(re)started agent[%d]. mining...\n", self.index)
nonce, mixDigest, seedHash := self.pow.Search(block, self.quitCurrentOp)
if nonce != nil {
self.returnCh <- Work{block.Number().Uint64(), nonce, mixDigest, seedHash}
}
}
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