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package miner
import (
"sync"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/pow"
)
type CpuAgent struct {
chMu sync.Mutex
c chan *types.Block
quit chan struct{}
quitCurrentOp chan struct{}
returnCh chan<- *types.Block
index int
pow pow.PoW
}
func NewCpuAgent(index int, pow pow.PoW) *CpuAgent {
miner := &CpuAgent{
pow: pow,
index: index,
}
return miner
}
func (self *CpuAgent) Work() chan<- *types.Block { return self.c }
func (self *CpuAgent) Pow() pow.PoW { return self.pow }
func (self *CpuAgent) SetReturnCh(ch chan<- *types.Block) { self.returnCh = ch }
func (self *CpuAgent) Stop() {
close(self.quit)
close(self.quitCurrentOp)
}
func (self *CpuAgent) Start() {
self.quit = make(chan struct{})
self.quitCurrentOp = make(chan struct{}, 1)
self.c = make(chan *types.Block, 1)
go self.update()
}
func (self *CpuAgent) update() {
out:
for {
select {
case block := <-self.c:
self.chMu.Lock()
self.quitCurrentOp <- struct{}{}
self.chMu.Unlock()
go self.mine(block)
case <-self.quit:
break out
}
}
//close(self.quitCurrentOp)
done:
// Empty channel
for {
select {
case <-self.c:
default:
close(self.c)
break done
}
}
}
func (self *CpuAgent) mine(block *types.Block) {
glog.V(logger.Debug).Infof("(re)started agent[%d]. mining...\n", self.index)
// Reset the channel
self.chMu.Lock()
self.quitCurrentOp = make(chan struct{}, 1)
self.chMu.Unlock()
// Mine
nonce, mixDigest := self.pow.Search(block, self.quitCurrentOp)
if nonce != 0 {
block.SetNonce(nonce)
block.Header().MixDigest = common.BytesToHash(mixDigest)
self.returnCh <- block
} else {
self.returnCh <- nil
}
}
func (self *CpuAgent) GetHashRate() int64 {
return self.pow.GetHashrate()
}
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