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all: use (blocking) event package instead of ethreact

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This commit is contained in:
Felix Lange
2014-10-14 01:58:31 +02:00
parent 6906904896
commit 36cdab2068
8 changed files with 147 additions and 158 deletions
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139
ethminer/miner.go
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@@ -6,27 +6,37 @@ import (
"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethlog"
"github.com/ethereum/eth-go/ethreact"
"github.com/ethereum/eth-go/ethwire"
"github.com/ethereum/eth-go/event"
)
var logger = ethlog.NewLogger("MINER")
type Miner struct {
pow ethchain.PoW
ethereum ethchain.EthManager
coinbase []byte
reactChan chan ethreact.Event
txs ethchain.Transactions
uncles []*ethchain.Block
block *ethchain.Block
powChan chan []byte
powQuitChan chan ethreact.Event
quitChan chan chan error
pow ethchain.PoW
ethereum ethchain.EthManager
coinbase []byte
txs ethchain.Transactions
uncles []*ethchain.Block
block *ethchain.Block
events event.Subscription
powQuitChan chan struct{}
powDone chan struct{}
turbo bool
}
const (
Started = iota
Stopped
)
type Event struct {
Type int // Started || Stopped
Miner *Miner
}
func (self *Miner) GetPow() ethchain.PoW {
return self.pow
}
@@ -48,46 +58,42 @@ func (self *Miner) ToggleTurbo() {
}
func (miner *Miner) Start() {
miner.reactChan = make(chan ethreact.Event, 1) // This is the channel that receives 'updates' when ever a new transaction or block comes in
miner.powChan = make(chan []byte, 1) // This is the channel that receives valid sha hashes for a given block
miner.powQuitChan = make(chan ethreact.Event, 1) // This is the channel that can exit the miner thread
miner.quitChan = make(chan chan error, 1)
// Insert initial TXs in our little miner 'pool'
miner.txs = miner.ethereum.TxPool().Flush()
miner.block = miner.ethereum.BlockChain().NewBlock(miner.coinbase)
mux := miner.ethereum.EventMux()
miner.events = mux.Subscribe(ethchain.NewBlockEvent{}, ethchain.TxEvent{})
// Prepare inital block
//miner.ethereum.StateManager().Prepare(miner.block.State(), miner.block.State())
go miner.listener()
reactor := miner.ethereum.Reactor()
reactor.Subscribe("newBlock", miner.reactChan)
reactor.Subscribe("newTx:pre", miner.reactChan)
// We need the quit chan to be a Reactor event.
// The POW search method is actually blocking and if we don't
// listen to the reactor events inside of the pow itself
// The miner overseer will never get the reactor events themselves
// Only after the miner will find the sha
reactor.Subscribe("newBlock", miner.powQuitChan)
reactor.Subscribe("newTx:pre", miner.powQuitChan)
logger.Infoln("Started")
mux.Post(Event{Started, miner})
}
reactor.Post("miner:start", miner)
func (miner *Miner) Stop() {
logger.Infoln("Stopping...")
miner.events.Unsubscribe()
miner.ethereum.EventMux().Post(Event{Stopped, miner})
}
func (miner *Miner) listener() {
for {
select {
case status := <-miner.quitChan:
logger.Infoln("Stopped")
status <- nil
return
case chanMessage := <-miner.reactChan:
miner.startMining()
if block, ok := chanMessage.Resource.(*ethchain.Block); ok {
select {
case event, isopen := <-miner.events.Chan():
miner.stopMining()
if !isopen {
return
}
switch event := event.(type) {
case ethchain.NewBlockEvent:
block := event.Block
//logger.Infoln("Got new block via Reactor")
if bytes.Compare(miner.ethereum.BlockChain().CurrentBlock.Hash(), block.Hash()) == 0 {
// TODO: Perhaps continue mining to get some uncle rewards
@@ -117,49 +123,44 @@ func (miner *Miner) listener() {
miner.uncles = append(miner.uncles, block)
}
}
}
if tx, ok := chanMessage.Resource.(*ethchain.Transaction); ok {
found := false
for _, ctx := range miner.txs {
if found = bytes.Compare(ctx.Hash(), tx.Hash()) == 0; found {
break
case ethchain.TxEvent:
if event.Type == ethchain.TxPre {
found := false
for _, ctx := range miner.txs {
if found = bytes.Compare(ctx.Hash(), event.Tx.Hash()) == 0; found {
break
}
}
if found == false {
// Undo all previous commits
miner.block.Undo()
// Apply new transactions
miner.txs = append(miner.txs, event.Tx)
}
}
if found == false {
// Undo all previous commits
miner.block.Undo()
// Apply new transactions
miner.txs = append(miner.txs, tx)
}
}
default:
miner.mineNewBlock()
case <-miner.powDone:
// next iteration will start mining again
}
}
}
func (miner *Miner) Stop() {
logger.Infoln("Stopping...")
func (miner *Miner) startMining() {
if miner.powDone == nil {
miner.powDone = make(chan struct{})
}
miner.powQuitChan = make(chan struct{})
go miner.mineNewBlock()
}
miner.powQuitChan <- ethreact.Event{}
status := make(chan error)
miner.quitChan <- status
<-status
reactor := miner.ethereum.Reactor()
reactor.Unsubscribe("newBlock", miner.powQuitChan)
reactor.Unsubscribe("newTx:pre", miner.powQuitChan)
reactor.Unsubscribe("newBlock", miner.reactChan)
reactor.Unsubscribe("newTx:pre", miner.reactChan)
reactor.Post("miner:stop", miner)
func (miner *Miner) stopMining() {
close(miner.powQuitChan)
<-miner.powDone
}
func (self *Miner) mineNewBlock() {
stateManager := self.ethereum.StateManager()
self.block = self.ethereum.BlockChain().NewBlock(self.coinbase)
@@ -195,8 +196,9 @@ func (self *Miner) mineNewBlock() {
logger.Infof("Mining on block. Includes %v transactions", len(self.txs))
// Find a valid nonce
self.block.Nonce = self.pow.Search(self.block, self.powQuitChan)
if self.block.Nonce != nil {
nonce := self.pow.Search(self.block, self.powQuitChan)
if nonce != nil {
self.block.Nonce = nonce
err := self.ethereum.StateManager().Process(self.block, false)
if err != nil {
logger.Infoln(err)
@@ -208,4 +210,5 @@ func (self *Miner) mineNewBlock() {
self.txs = self.ethereum.TxPool().CurrentTransactions()
}
}
self.powDone <- struct{}{}
}