From 01b833146f3afa214586a1ffb710546a5e4cc90a Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Thu, 22 May 2014 00:25:48 +0200
Subject: [PATCH] Added mining stop and start

---
 ethereum/javascript_runtime.go | 15 +++++++++++++-
 utils/cmd.go                   | 38 +++++++++++++++++++++++++++-------
 2 files changed, 44 insertions(+), 9 deletions(-)

diff --git a/ethereum/javascript_runtime.go b/ethereum/javascript_runtime.go
index fa01c7005d..93297f604a 100644
--- a/ethereum/javascript_runtime.go
+++ b/ethereum/javascript_runtime.go
@@ -6,6 +6,7 @@ import (
 	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethpub"
 	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/go-ethereum/utils"
 	"github.com/obscuren/otto"
 	"io/ioutil"
 	"os"
@@ -116,14 +117,26 @@ func (self *JSRE) initStdFuncs() {
 	eth.Set("watch", self.watch)
 	eth.Set("addPeer", self.addPeer)
 	eth.Set("require", self.require)
+	eth.Set("stopMining", self.stopMining)
+	eth.Set("startMining", self.startMining)
 }
 
 /*
  * The following methods are natively implemented javascript functions
  */
 
+func (self *JSRE) stopMining(call otto.FunctionCall) otto.Value {
+	v, _ := self.vm.ToValue(utils.StopMining(self.ethereum))
+	return v
+}
+
+func (self *JSRE) startMining(call otto.FunctionCall) otto.Value {
+	v, _ := self.vm.ToValue(utils.StartMining(self.ethereum))
+	return v
+}
+
 // eth.watch
-func (self JSRE) watch(call otto.FunctionCall) otto.Value {
+func (self *JSRE) watch(call otto.FunctionCall) otto.Value {
 	addr, _ := call.Argument(0).ToString()
 	var storageAddr string
 	var cb otto.Value
diff --git a/utils/cmd.go b/utils/cmd.go
index f163575da7..98005d7de0 100644
--- a/utils/cmd.go
+++ b/utils/cmd.go
@@ -19,6 +19,8 @@ func DoRpc(ethereum *eth.Ethereum, RpcPort int) {
 	}
 }
 
+var miner ethminer.Miner
+
 func DoMining(ethereum *eth.Ethereum) {
 	// Set Mining status
 	ethereum.Mining = true
@@ -31,17 +33,37 @@ func DoMining(ethereum *eth.Ethereum) {
 	addr := keyPair.Address()
 
 	go func() {
+		ethutil.Config.Log.Infoln("Miner started")
+
+		miner = ethminer.NewDefaultMiner(addr, ethereum)
+
 		// Give it some time to connect with peers
 		time.Sleep(3 * time.Second)
 
-		/*
-			for ethereum.IsUpToDate() == false {
-				time.Sleep(5 * time.Second)
-			}
-		*/
-		ethutil.Config.Log.Infoln("Miner started")
-
-		miner := ethminer.NewDefaultMiner(addr, ethereum)
 		miner.Start()
 	}()
 }
+
+func StopMining(ethereum *eth.Ethereum) bool {
+	if ethereum.Mining {
+		miner.Stop()
+
+		ethutil.Config.Log.Infoln("Miner stopped")
+
+		ethereum.Mining = false
+
+		return true
+	}
+
+	return false
+}
+
+func StartMining(ethereum *eth.Ethereum) bool {
+	if !ethereum.Mining {
+		DoMining(ethereum)
+
+		return true
+	}
+
+	return false
+}