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Merge pull request #1364 from ethcore/miner-lock 

Fix lock order when updating sealing
This commit is contained in:
Arkadiy Paronyan 2016-06-21 17:41:44 +02:00 committed by GitHub
parent b2891fcdda 840f961dc2
commit 613d4c95f6
1 changed files with 35 additions and 28 deletions
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63
ethcore/src/miner/miner.rs
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@ -106,34 +106,37 @@ impl Miner {
#[cfg_attr(feature="dev", allow(cyclomatic_complexity))]
fn prepare_sealing(&self, chain: &MiningBlockChainClient) {
trace!(target: "miner", "prepare_sealing: entering");
let transactions = self.transaction_queue.lock().unwrap().top_transactions();
let mut sealing_work = self.sealing_work.lock().unwrap();
let best_hash = chain.best_block_header().sha3();
let (transactions, mut open_block) = {
let transactions = {self.transaction_queue.lock().unwrap().top_transactions()};
let mut sealing_work = self.sealing_work.lock().unwrap();
let best_hash = chain.best_block_header().sha3();
/*
// check to see if last ClosedBlock in would_seals is actually same parent block.
// if so
// duplicate, re-open and push any new transactions.
// if at least one was pushed successfully, close and enqueue new ClosedBlock;
// otherwise, leave everything alone.
// otherwise, author a fresh block.
// check to see if last ClosedBlock in would_seals is actually same parent block.
// if so
// duplicate, re-open and push any new transactions.
// if at least one was pushed successfully, close and enqueue new ClosedBlock;
// otherwise, leave everything alone.
// otherwise, author a fresh block.
*/
let mut open_block = match sealing_work.pop_if(|b| b.block().fields().header.parent_hash() == &best_hash) {
Some(old_block) => {
trace!(target: "miner", "Already have previous work; updating and returning");
// add transactions to old_block
let e = self.engine();
old_block.reopen(e, chain.vm_factory())
}
None => {
// block not found - create it.
trace!(target: "miner", "No existing work - making new block");
chain.prepare_open_block(
self.author(),
self.gas_floor_target(),
self.extra_data()
)
}
let open_block = match sealing_work.pop_if(|b| b.block().fields().header.parent_hash() == &best_hash) {
Some(old_block) => {
trace!(target: "miner", "Already have previous work; updating and returning");
// add transactions to old_block
let e = self.engine();
old_block.reopen(e, chain.vm_factory())
}
None => {
// block not found - create it.
trace!(target: "miner", "No existing work - making new block");
chain.prepare_open_block(
self.author(),
self.gas_floor_target(),
self.extra_data()
)
}
};
(transactions, open_block)
};
let mut invalid_transactions = HashSet::new();
@ -163,14 +166,16 @@ impl Miner {
let block = open_block.close();
let mut queue = self.transaction_queue.lock().unwrap();
let fetch_account = |a: &Address| AccountDetails {
nonce: chain.latest_nonce(a),
balance: chain.latest_balance(a),
};
for hash in invalid_transactions.into_iter() {
queue.remove_invalid(&hash, &fetch_account);
{
let mut queue = self.transaction_queue.lock().unwrap();
for hash in invalid_transactions.into_iter() {
queue.remove_invalid(&hash, &fetch_account);
}
}
if !block.transactions().is_empty() {
@ -196,6 +201,8 @@ impl Miner {
trace!(target: "miner", "prepare_sealing: unable to generate seal internally");
}
}
let mut sealing_work = self.sealing_work.lock().unwrap();
if sealing_work.peek_last_ref().map_or(true, |pb| pb.block().fields().header.hash() != block.block().fields().header.hash()) {
trace!(target: "miner", "Pushing a new, refreshed or borrowed pending {}...", block.block().fields().header.hash());
sealing_work.push(block);