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Merge pull request #2416 from karalabe/kill-canary 

core, miner: remove Frontier canary
This commit is contained in:
Jeffrey Wilcke 2016-04-04 20:43:01 +02:00
parent 8d8e2248b2 e9254bb0f9
commit 6a185531d2
2 changed files with 8 additions and 63 deletions
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51
core/canary.go
View File

@ -1,51 +0,0 @@
// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package core
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
)
var (
jeff = common.HexToAddress("959c33de5961820567930eccce51ea715c496f85")
vitalik = common.HexToAddress("c8158da0b567a8cc898991c2c2a073af67dc03a9")
christoph = common.HexToAddress("7a19a893f91d5b6e2cdf941b6acbba2cbcf431ee")
gav = common.HexToAddress("539dd9aaf45c3feb03f9c004f4098bd3268fef6b")
)
// Canary will check the 0'd address of the 4 contracts above.
// If two or more are set to anything other than a 0 the canary
// dies a horrible death.
func Canary(statedb *state.StateDB) bool {
var r int
if (statedb.GetState(jeff, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
r++
}
if (statedb.GetState(gav, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
r++
}
if (statedb.GetState(christoph, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
r++
}
if (statedb.GetState(vitalik, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
r++
}
return r > 1
}

20
miner/worker.go
View File

@ -351,19 +351,15 @@ func (self *worker) wait() {
}
}
// push sends a new work task to currently live miner agents.
func (self *worker) push(work *Work) {
if atomic.LoadInt32(&self.mining) == 1 {
if core.Canary(work.state) {
glog.Infoln("Toxicity levels rising to deadly levels. Your canary has died. You can go back or continue down the mineshaft --more--")
glog.Infoln("You turn back and abort mining")
return
}
// push new work to agents
for agent := range self.agents {
atomic.AddInt32(&self.atWork, 1)
if agent.Work() != nil {
agent.Work() <- work
}
if atomic.LoadInt32(&self.mining) != 1 {
return
}
for agent := range self.agents {
atomic.AddInt32(&self.atWork, 1)
if ch := agent.Work(); ch != nil {
ch <- work
}
}
}