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les: implement request distributor, fix blocking issues (#3660)

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* les: implement request distributor, fix blocking issues
* core: moved header validation before chain mutex lock
This commit is contained in:
Felföldi Zsolt
2017-03-22 20:44:22 +01:00
committed by Felix Lange
parent 1c1dc0e0fc
commit 525116dbff
19 changed files with 875 additions and 320 deletions
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7
core/blockchain.go
View File

@ -1313,6 +1313,11 @@ Error: %v
// of the header retrieval mechanisms already need to verify nonces, as well as
// because nonces can be verified sparsely, not needing to check each.
func (self *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (int, error) {
start := time.Now()
if i, err := self.hc.ValidateHeaderChain(chain, checkFreq); err != nil {
return i, err
}
// Make sure only one thread manipulates the chain at once
self.chainmu.Lock()
defer self.chainmu.Unlock()
@ -1328,7 +1333,7 @@ func (self *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int)
return err
}
return self.hc.InsertHeaderChain(chain, checkFreq, whFunc)
return self.hc.InsertHeaderChain(chain, whFunc, start)
}
// writeHeader writes a header into the local chain, given that its parent is

13
core/headerchain.go
View File

@ -219,7 +219,8 @@ type WhCallback func(*types.Header) error
// should be done or not. The reason behind the optional check is because some
// of the header retrieval mechanisms already need to verfy nonces, as well as
// because nonces can be verified sparsely, not needing to check each.
func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, checkFreq int, writeHeader WhCallback) (int, error) {
func (hc *HeaderChain) ValidateHeaderChain(chain []*types.Header, checkFreq int) (int, error) {
// Do a sanity check that the provided chain is actually ordered and linked
for i := 1; i < len(chain); i++ {
if chain[i].Number.Uint64() != chain[i-1].Number.Uint64()+1 || chain[i].ParentHash != chain[i-1].Hash() {
@ -231,9 +232,6 @@ func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, checkFreq int, w
chain[i-1].Hash().Bytes()[:4], i, chain[i].Number, chain[i].Hash().Bytes()[:4], chain[i].ParentHash[:4])
}
}
// Collect some import statistics to report on
stats := struct{ processed, ignored int }{}
start := time.Now()
// Generate the list of headers that should be POW verified
verify := make([]bool, len(chain))
@ -309,6 +307,13 @@ func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, checkFreq int, w
}
}
}
return 0, nil
}
func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, writeHeader WhCallback, start time.Time) (int, error) {
// Collect some import statistics to report on
stats := struct{ processed, ignored int }{}
// All headers passed verification, import them into the database
for i, header := range chain {
// Short circuit insertion if shutting down