forked from cerc-io/plugeth
core: changed interrupt strategy
Removed chain manager's select/channel approach when checking for interrupts. Now using an atomic int32 instead which checked for every block processed.
This commit is contained in:
obscuren
parent
90c4493a10
commit
645dfd9693
@ -8,6 +8,7 @@ import (
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"os"
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"runtime"
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"sync"
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"sync/atomic"
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"time"
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"github.com/ethereum/go-ethereum/common"
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@ -100,9 +101,10 @@ type ChainManager struct {
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cache *BlockCache
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futureBlocks *BlockCache
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quit chan struct{}
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procInterupt chan struct{} // interupt signaler for block processing
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wg sync.WaitGroup
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quit chan struct{}
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// procInterrupt must be atomically called
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procInterrupt int32 // interrupt signaler for block processing
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wg sync.WaitGroup
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pow pow.PoW
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}
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@ -114,7 +116,6 @@ func NewChainManager(genesis *types.Block, blockDb, stateDb common.Database, pow
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genesisBlock: GenesisBlock(42, stateDb),
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eventMux: mux,
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quit: make(chan struct{}),
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procInterupt: make(chan struct{}),
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cache: NewBlockCache(blockCacheLimit),
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pow: pow,
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}
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@ -518,7 +519,7 @@ func (self *ChainManager) CalcTotalDiff(block *types.Block) (*big.Int, error) {
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func (bc *ChainManager) Stop() {
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close(bc.quit)
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close(bc.procInterupt)
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atomic.StoreInt32(&bc.procInterrupt, 1)
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bc.wg.Wait()
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@ -571,126 +572,124 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
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defer close(nonceQuit)
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txcount := 0
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done:
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for i, block := range chain {
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select {
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case <-self.procInterupt:
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if atomic.LoadInt32(&self.procInterrupt) == 1 {
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glog.V(logger.Debug).Infoln("Premature abort during chain processing")
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break done
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default:
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bstart := time.Now()
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// Wait for block i's nonce to be verified before processing
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// its state transition.
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for !nonceChecked[i] {
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r := <-nonceDone
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nonceChecked[r.i] = true
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if !r.valid {
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block := chain[r.i]
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return r.i, &BlockNonceErr{Hash: block.Hash(), Number: block.Number(), Nonce: block.Nonce()}
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}
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}
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if BadHashes[block.Hash()] {
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err := fmt.Errorf("Found known bad hash in chain %x", block.Hash())
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blockErr(block, err)
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return i, err
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}
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// Setting block.Td regardless of error (known for example) prevents errors down the line
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// in the protocol handler
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block.Td = new(big.Int).Set(CalcTD(block, self.GetBlock(block.ParentHash())))
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// Call in to the block processor and check for errors. It's likely that if one block fails
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// all others will fail too (unless a known block is returned).
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logs, err := self.processor.Process(block)
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if err != nil {
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if IsKnownBlockErr(err) {
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stats.ignored++
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continue
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}
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if err == BlockFutureErr {
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// Allow up to MaxFuture second in the future blocks. If this limit
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// is exceeded the chain is discarded and processed at a later time
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// if given.
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if max := time.Now().Unix() + maxTimeFutureBlocks; block.Time() > max {
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return i, fmt.Errorf("%v: BlockFutureErr, %v > %v", BlockFutureErr, block.Time(), max)
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}
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block.SetQueued(true)
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self.futureBlocks.Push(block)
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stats.queued++
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continue
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}
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if IsParentErr(err) && self.futureBlocks.Has(block.ParentHash()) {
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block.SetQueued(true)
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self.futureBlocks.Push(block)
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stats.queued++
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continue
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}
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blockErr(block, err)
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return i, err
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}
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txcount += len(block.Transactions())
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cblock := self.currentBlock
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// Compare the TD of the last known block in the canonical chain to make sure it's greater.
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// At this point it's possible that a different chain (fork) becomes the new canonical chain.
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if block.Td.Cmp(self.Td()) > 0 {
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// chain fork
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if block.ParentHash() != cblock.Hash() {
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// during split we merge two different chains and create the new canonical chain
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err := self.merge(cblock, block)
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if err != nil {
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return i, err
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}
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queue[i] = ChainSplitEvent{block, logs}
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queueEvent.splitCount++
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}
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self.mu.Lock()
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self.setTotalDifficulty(block.Td)
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self.insert(block)
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self.mu.Unlock()
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jsonlogger.LogJson(&logger.EthChainNewHead{
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BlockHash: block.Hash().Hex(),
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BlockNumber: block.Number(),
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ChainHeadHash: cblock.Hash().Hex(),
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BlockPrevHash: block.ParentHash().Hex(),
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})
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self.setTransState(state.New(block.Root(), self.stateDb))
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self.txState.SetState(state.New(block.Root(), self.stateDb))
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queue[i] = ChainEvent{block, block.Hash(), logs}
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queueEvent.canonicalCount++
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if glog.V(logger.Debug) {
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glog.Infof("[%v] inserted block #%d (%d TXs %d UNCs) (%x...). Took %v\n", time.Now().UnixNano(), block.Number(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4], time.Since(bstart))
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}
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} else {
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if glog.V(logger.Detail) {
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glog.Infof("inserted forked block #%d (TD=%v) (%d TXs %d UNCs) (%x...). Took %v\n", block.Number(), block.Difficulty(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4], time.Since(bstart))
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}
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queue[i] = ChainSideEvent{block, logs}
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queueEvent.sideCount++
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}
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// Write block to database. Eventually we'll have to improve on this and throw away blocks that are
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// not in the canonical chain.
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self.write(block)
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// Delete from future blocks
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self.futureBlocks.Delete(block.Hash())
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stats.processed++
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break
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}
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bstart := time.Now()
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// Wait for block i's nonce to be verified before processing
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// its state transition.
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for !nonceChecked[i] {
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r := <-nonceDone
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nonceChecked[r.i] = true
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if !r.valid {
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block := chain[r.i]
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return r.i, &BlockNonceErr{Hash: block.Hash(), Number: block.Number(), Nonce: block.Nonce()}
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}
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}
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if BadHashes[block.Hash()] {
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err := fmt.Errorf("Found known bad hash in chain %x", block.Hash())
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blockErr(block, err)
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return i, err
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}
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// Setting block.Td regardless of error (known for example) prevents errors down the line
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// in the protocol handler
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block.Td = new(big.Int).Set(CalcTD(block, self.GetBlock(block.ParentHash())))
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// Call in to the block processor and check for errors. It's likely that if one block fails
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// all others will fail too (unless a known block is returned).
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logs, err := self.processor.Process(block)
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if err != nil {
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if IsKnownBlockErr(err) {
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stats.ignored++
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continue
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}
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if err == BlockFutureErr {
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// Allow up to MaxFuture second in the future blocks. If this limit
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// is exceeded the chain is discarded and processed at a later time
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// if given.
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if max := time.Now().Unix() + maxTimeFutureBlocks; block.Time() > max {
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return i, fmt.Errorf("%v: BlockFutureErr, %v > %v", BlockFutureErr, block.Time(), max)
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}
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block.SetQueued(true)
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self.futureBlocks.Push(block)
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stats.queued++
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continue
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}
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if IsParentErr(err) && self.futureBlocks.Has(block.ParentHash()) {
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block.SetQueued(true)
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self.futureBlocks.Push(block)
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stats.queued++
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continue
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}
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blockErr(block, err)
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return i, err
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}
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txcount += len(block.Transactions())
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cblock := self.currentBlock
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// Compare the TD of the last known block in the canonical chain to make sure it's greater.
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// At this point it's possible that a different chain (fork) becomes the new canonical chain.
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if block.Td.Cmp(self.Td()) > 0 {
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// chain fork
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if block.ParentHash() != cblock.Hash() {
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// during split we merge two different chains and create the new canonical chain
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err := self.merge(cblock, block)
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if err != nil {
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return i, err
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}
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queue[i] = ChainSplitEvent{block, logs}
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queueEvent.splitCount++
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}
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self.mu.Lock()
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self.setTotalDifficulty(block.Td)
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self.insert(block)
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self.mu.Unlock()
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jsonlogger.LogJson(&logger.EthChainNewHead{
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BlockHash: block.Hash().Hex(),
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BlockNumber: block.Number(),
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ChainHeadHash: cblock.Hash().Hex(),
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BlockPrevHash: block.ParentHash().Hex(),
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})
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self.setTransState(state.New(block.Root(), self.stateDb))
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self.txState.SetState(state.New(block.Root(), self.stateDb))
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queue[i] = ChainEvent{block, block.Hash(), logs}
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queueEvent.canonicalCount++
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if glog.V(logger.Debug) {
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glog.Infof("[%v] inserted block #%d (%d TXs %d UNCs) (%x...). Took %v\n", time.Now().UnixNano(), block.Number(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4], time.Since(bstart))
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}
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} else {
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if glog.V(logger.Detail) {
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glog.Infof("inserted forked block #%d (TD=%v) (%d TXs %d UNCs) (%x...). Took %v\n", block.Number(), block.Difficulty(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4], time.Since(bstart))
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}
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queue[i] = ChainSideEvent{block, logs}
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queueEvent.sideCount++
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}
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// Write block to database. Eventually we'll have to improve on this and throw away blocks that are
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// not in the canonical chain.
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self.write(block)
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// Delete from future blocks
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self.futureBlocks.Delete(block.Hash())
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stats.processed++
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}
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if (stats.queued > 0 || stats.processed > 0 || stats.ignored > 0) && bool(glog.V(logger.Info)) {
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