consensus/ethash: move remote agent logic to ethash internal (#15853)

* consensus/ethash: start remote ggoroutine to handle remote mining

* consensus/ethash: expose remote miner api

* consensus/ethash: expose submitHashrate api

* miner, ethash: push empty block to sealer without waiting execution

* consensus, internal: add getHashrate API for ethash

* consensus: add three method for consensus interface

* miner: expose consensus engine running status to miner

* eth, miner: specify etherbase when miner created

* miner: commit new work when consensus engine is started

* consensus, miner: fix some logics

* all: delete useless interfaces

* consensus: polish a bit

1 files changed, 11 insertions, 19 deletions

diff --git a/miner/agent.go b/miner/agent.go
index e3cebbd2e..95d835bd7 100644
--- a/miner/agent.go
+++ b/miner/agent.go
@@ -18,7 +18,6 @@ package miner
 
 import (
 	"sync"
-
 	"sync/atomic"
 
 	"github.com/ethereum/go-ethereum/consensus"
@@ -36,24 +35,31 @@ type CpuAgent struct {
 	chain  consensus.ChainReader
 	engine consensus.Engine
 
-	isMining int32 // isMining indicates whether the agent is currently mining
+	started int32 // started indicates whether the agent is currently started
 }
 
 func NewCpuAgent(chain consensus.ChainReader, engine consensus.Engine) *CpuAgent {
-	miner := &CpuAgent{
+	agent := &CpuAgent{
 		chain:  chain,
 		engine: engine,
 		stop:   make(chan struct{}, 1),
 		workCh: make(chan *Work, 1),
 	}
-	return miner
+	return agent
 }
 
 func (self *CpuAgent) Work() chan<- *Work            { return self.workCh }
 func (self *CpuAgent) SetReturnCh(ch chan<- *Result) { self.returnCh = ch }
 
+func (self *CpuAgent) Start() {
+	if !atomic.CompareAndSwapInt32(&self.started, 0, 1) {
+		return // agent already started
+	}
+	go self.update()
+}
+
 func (self *CpuAgent) Stop() {
-	if !atomic.CompareAndSwapInt32(&self.isMining, 1, 0) {
+	if !atomic.CompareAndSwapInt32(&self.started, 1, 0) {
 		return // agent already stopped
 	}
 	self.stop <- struct{}{}
@@ -68,13 +74,6 @@ done:
 	}
 }
 
-func (self *CpuAgent) Start() {
-	if !atomic.CompareAndSwapInt32(&self.isMining, 0, 1) {
-		return // agent already started
-	}
-	go self.update()
-}
-
 func (self *CpuAgent) update() {
 out:
 	for {
@@ -110,10 +109,3 @@ func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) {
 		self.returnCh <- nil
 	}
 }
-
-func (self *CpuAgent) GetHashRate() int64 {
-	if pow, ok := self.engine.(consensus.PoW); ok {
-		return int64(pow.Hashrate())
-	}
-	return 0
-}