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Merge pull request #1021 from obscuren/global_chain_lock

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core: global chain insert lock
This commit is contained in:
Jeffrey Wilcke 2015-05-17 08:54:16 -07:00
commit 443d024843
1 changed files with 47 additions and 48 deletions
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95
core/chain_manager.go
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@ -83,8 +83,9 @@ type ChainManager struct {
eventMux *event.TypeMux
genesisBlock *types.Block
// Last known total difficulty
mu sync.RWMutex
tsmu sync.RWMutex
mu sync.RWMutex
chainmu sync.RWMutex
tsmu sync.RWMutex
td *big.Int
currentBlock *types.Block
@ -518,6 +519,9 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
self.wg.Add(1)
defer self.wg.Done()
self.chainmu.Lock()
defer self.chainmu.Unlock()
// A queued approach to delivering events. This is generally faster than direct delivery and requires much less mutex acquiring.
var (
queue = make([]interface{}, len(chain))
@ -542,7 +546,6 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
continue
}
block.Td = new(big.Int)
// Do not penelise on future block. We'll need a block queue eventually that will queue
// future block for future use
if err == BlockFutureErr {
@ -568,54 +571,50 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
return i, err
}
self.mu.Lock()
{
cblock := self.currentBlock
// Write block to database. Eventually we'll have to improve on this and throw away blocks that are
// not in the canonical chain.
self.write(block)
// Compare the TD of the last known block in the canonical chain to make sure it's greater.
// At this point it's possible that a different chain (fork) becomes the new canonical chain.
if block.Td.Cmp(self.td) > 0 {
// chain fork
if block.ParentHash() != cblock.Hash() {
// during split we merge two different chains and create the new canonical chain
self.merge(cblock, block)
cblock := self.currentBlock
// Write block to database. Eventually we'll have to improve on this and throw away blocks that are
// not in the canonical chain.
self.write(block)
// Compare the TD of the last known block in the canonical chain to make sure it's greater.
// At this point it's possible that a different chain (fork) becomes the new canonical chain.
if block.Td.Cmp(self.td) > 0 {
// chain fork
if block.ParentHash() != cblock.Hash() {
// during split we merge two different chains and create the new canonical chain
self.merge(cblock, block)
queue[i] = ChainSplitEvent{block, logs}
queueEvent.splitCount++
}
self.setTotalDifficulty(block.Td)
self.insert(block)
jsonlogger.LogJson(&logger.EthChainNewHead{
BlockHash: block.Hash().Hex(),
BlockNumber: block.Number(),
ChainHeadHash: cblock.Hash().Hex(),
BlockPrevHash: block.ParentHash().Hex(),
})
self.setTransState(state.New(block.Root(), self.stateDb))
self.txState.SetState(state.New(block.Root(), self.stateDb))
queue[i] = ChainEvent{block, block.Hash(), logs}
queueEvent.canonicalCount++
if glog.V(logger.Debug) {
glog.Infof("[%v] inserted block #%d (%d TXs %d UNCs) (%x...)\n", time.Now().UnixNano(), block.Number(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4])
}
} else {
if glog.V(logger.Detail) {
glog.Infof("inserted forked block #%d (TD=%v) (%d TXs %d UNCs) (%x...)\n", block.Number(), block.Difficulty(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4])
}
queue[i] = ChainSideEvent{block, logs}
queueEvent.sideCount++
queue[i] = ChainSplitEvent{block, logs}
queueEvent.splitCount++
}
self.futureBlocks.Delete(block.Hash())
self.setTotalDifficulty(block.Td)
self.insert(block)
jsonlogger.LogJson(&logger.EthChainNewHead{
BlockHash: block.Hash().Hex(),
BlockNumber: block.Number(),
ChainHeadHash: cblock.Hash().Hex(),
BlockPrevHash: block.ParentHash().Hex(),
})
self.setTransState(state.New(block.Root(), self.stateDb))
self.txState.SetState(state.New(block.Root(), self.stateDb))
queue[i] = ChainEvent{block, block.Hash(), logs}
queueEvent.canonicalCount++
if glog.V(logger.Debug) {
glog.Infof("[%v] inserted block #%d (%d TXs %d UNCs) (%x...)\n", time.Now().UnixNano(), block.Number(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4])
}
} else {
if glog.V(logger.Detail) {
glog.Infof("inserted forked block #%d (TD=%v) (%d TXs %d UNCs) (%x...)\n", block.Number(), block.Difficulty(), len(block.Transactions()), len(block.Uncles()), block.Hash().Bytes()[0:4])
}
queue[i] = ChainSideEvent{block, logs}
queueEvent.sideCount++
}
self.mu.Unlock()
self.futureBlocks.Delete(block.Hash())
stats.processed++