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miner: smart mining

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Work is now handled and carried over multiple sessions. Previously one
session only was assumed, potentially resulting in invalid (outdated)
work

* Larger work / result queue
* Full validation option
This commit is contained in:
Jeffrey Wilcke
2015-07-11 20:45:59 +02:00
parent cecc9cdd2f
commit e870e61bc9
3 changed files with 161 additions and 117 deletions
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24
miner/agent.go
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@ -20,7 +20,6 @@ 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"
@ -29,10 +28,10 @@ import (
type CpuAgent struct {
mu sync.Mutex
workCh chan *types.Block
workCh chan *Work
quit chan struct{}
quitCurrentOp chan struct{}
returnCh chan<- *types.Block
returnCh chan<- *Result
index int
pow pow.PoW
@ -47,9 +46,9 @@ func NewCpuAgent(index int, pow pow.PoW) *CpuAgent {
return miner
}
func (self *CpuAgent) Work() chan<- *types.Block { return self.workCh }
func (self *CpuAgent) Pow() pow.PoW { return self.pow }
func (self *CpuAgent) SetReturnCh(ch chan<- *types.Block) { self.returnCh = ch }
func (self *CpuAgent) Work() chan<- *Work { return self.workCh }
func (self *CpuAgent) Pow() pow.PoW { return self.pow }
func (self *CpuAgent) SetReturnCh(ch chan<- *Result) { self.returnCh = ch }
func (self *CpuAgent) Stop() {
self.mu.Lock()
@ -65,7 +64,7 @@ func (self *CpuAgent) Start() {
self.quit = make(chan struct{})
// creating current op ch makes sure we're not closing a nil ch
// later on
self.workCh = make(chan *types.Block, 1)
self.workCh = make(chan *Work, 1)
go self.update()
}
@ -74,13 +73,13 @@ func (self *CpuAgent) update() {
out:
for {
select {
case block := <-self.workCh:
case work := <-self.workCh:
self.mu.Lock()
if self.quitCurrentOp != nil {
close(self.quitCurrentOp)
}
self.quitCurrentOp = make(chan struct{})
go self.mine(block, self.quitCurrentOp)
go self.mine(work, self.quitCurrentOp)
self.mu.Unlock()
case <-self.quit:
self.mu.Lock()
@ -106,13 +105,14 @@ done:
}
}
func (self *CpuAgent) mine(block *types.Block, stop <-chan struct{}) {
func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) {
glog.V(logger.Debug).Infof("(re)started agent[%d]. mining...\n", self.index)
// Mine
nonce, mixDigest := self.pow.Search(block, stop)
nonce, mixDigest := self.pow.Search(work.Block, stop)
if nonce != 0 {
self.returnCh <- block.WithMiningResult(nonce, common.BytesToHash(mixDigest))
block := work.Block.WithMiningResult(nonce, common.BytesToHash(mixDigest))
self.returnCh <- &Result{work, block}
} else {
self.returnCh <- nil
}