`fillTransactions` will call `commitTransactions` twice, if the delay
timer is expired during the first call, it will make the delay timer
never be triggered in the second commitTransactions call.
Pseudo code:
x := time.NewTimer(time.Second)
<-x.C
fmt.Println("read delay 1")
<-x.C
fmt.Println("read delay 2") // will never hit
pre-seal empty block is for PoW to deliver an empty block ASAP to
gain the block mine reward.
It is useless for PoS consensus and it does not work for BSC either.
Delete the code to make worker simpler.
It could be a very old PoW logic, which try to add more transaction
into the pending block when mining is stopped.
Mining can be stopped when:
1.download started.
2.manually stopped by RPC.
It is unnecessary to add more transaction into the pending block if a validator is stopped.
And updateSnapshot() is not needed as well, it is to get the pending mining snapshot.
Right now, DelayLeftOver is used to reserve time for block finalize, not block
broadcast. And the code does not work as expected.
The general block generation could be described as:
|- fillTransactions -|- finalize a block -|- wait until the period(3s) reached -|- broadcast -|
resubmit intervalAdjust is for PoW only, to remove it to make worker simpler.
With PoW, there will be a periodic timer to check if it is the time to stop
packing transaction and start calculating the desired hash value, since other miner
could succeed in hash compute if it spends too much time packing transactions.
It will commit the current fruit to calculate root at a reasonable time.
And it will schedule a new work to get a big block if new transaction was received.
When there are too many transactions in the TxPool, the interval of the resubmit timer would be
increased and vice versa.
But it is not needed with PoS related consensus, since the block interval is determined in PoS,
and there is already a timer to stop too long packing.
* feature: do trie prefetch on state prefetch
Currently, state prefetch just pre execute the transactions and discard the results.
It is helpful to increase the snapshot cache hit rate.
It would be more helpful, if it can do trie prefetch at the same time, since the it will
preload the trie node and build the trie tree in advance.
This patch is to implement it, by reusing the main trie prefetch and doing finalize after
transaction is executed.
* some code improvements for trie prefetch
** increase pendingSize before dispatch tasks
** use throwaway StateDB for TriePrefetchInAdvance and remove the prefetcherLock
** remove the necessary drain operation in trie prefetch mainloop,
trie prefetcher won't be used after close.
* eth, miner: remove duplicated code
* eth/catalyst: remove unneeded code
* miner: keep update pending state even the Merge is happened
* eth, miner: rebase
* miner: fix tests
* eth, miner: address comments from marius
* miner: use empty zero randomness for pending blocks after the merge
* eth/catalyst: gofmt
* miner: add warning log for state recovery
* miner: ignore uncles for post-merge blocks
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
* all: work for eth1/2 transtition
* consensus/beacon, eth: change beacon difficulty to 0
* eth: updates
* all: add terminalBlockDifficulty config, fix rebasing issues
* eth: implemented merge interop spec
* internal/ethapi: update to v1.0.0.alpha.2
This commit updates the code to the new spec, moving payloadId into
it's own object. It also fixes an issue with finalizing an empty blockhash.
It also properly sets the basefee
* all: sync polishes, other fixes + refactors
* core, eth: correct semantics for LeavePoW, EnterPoS
* core: fixed rebasing artifacts
* core: light: performance improvements
* core: use keyed field (f)
* core: eth: fix compilation issues + tests
* eth/catalyst: dbetter error codes
* all: move Merger to consensus/, remove reliance on it in bc
* all: renamed EnterPoS and LeavePoW to ReachTDD and FinalizePoS
* core: make mergelogs a function
* core: use InsertChain instead of InsertBlock
* les: drop merger from lightchain object
* consensus: add merger
* core: recoverAncestors in catalyst mode
* core: fix nitpick
* all: removed merger from beacon, use TTD, nitpicks
* consensus: eth: add docstring, removed unnecessary code duplication
* consensus/beacon: better comment
* all: easy to fix nitpicks by karalabe
* consensus/beacon: verify known headers to be sure
* core: comments
* core: eth: don't drop peers who advertise blocks, nitpicks
* core: never add beacon blocks to the future queue
* core: fixed nitpicks
* consensus/beacon: simplify IsTTDReached check
* consensus/beacon: correct IsTTDReached check
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
This PR fixes a problem which arises on clique networks when there is a network stall. Previously, the worker packages were tracked, even if the sealing engine decided not to seal the block (due to clique rules about recent signing). These tracked-but-not-sealed blocks kept building up in memory.
This PR changes the situation so the sealing engine instead returns an error, and the worker can thus un-track the package.
This fixes a data race on worker.current by moving the call to StopPrefetcher
into the main loop.
The commit also contains fixes for two other races in unit tests of unrelated packages.
* core/types, miner: create TxWithMinerFee wrapper, add EIP-1559 support to TransactionsByMinerFeeAndNonce
miner: set base fee when creating a new header, handle gas limit, log miner fees
* all: rename to NewTransactionsByPriceAndNonce
* core/types, miner: rename to NewTransactionsByPriceAndNonce + EffectiveTip
miner: activate 1559 for testGenerateBlockAndImport tests
* core,miner: revert naming to TransactionsByPriceAndTime
* core/types/transaction: update effective tip calculation logic
* miner: update aleut to london
* core/types/transaction_test: use correct signer for 1559 txs + add back sender check
* miner/worker: calculate gas target from gas limit
* core, miner: fix block gas limits for 1559
Co-authored-by: Ansgar Dietrichs <adietrichs@gmail.com>
Co-authored-by: lightclient@protonmail.com <lightclient@protonmail.com>
This adds support for EIP-2718 typed transactions as well as EIP-2930
access list transactions (tx type 1). These EIPs are scheduled for the
Berlin fork.
There very few changes to existing APIs in core/types, and several new APIs
to deal with access list transactions. In particular, there are two new
constructor functions for transactions: types.NewTx and types.SignNewTx.
Since the canonical encoding of typed transactions is not RLP-compatible,
Transaction now has new methods for encoding and decoding: MarshalBinary
and UnmarshalBinary.
The existing EIP-155 signer does not support the new transaction types.
All code dealing with transaction signatures should be updated to use the
newer EIP-2930 signer. To make this easier for future updates, we have
added new constructor functions for types.Signer: types.LatestSigner and
types.LatestSignerForChainID.
This change also adds support for the YoloV3 testnet.
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: Ryan Schneider <ryanleeschneider@gmail.com>
The PR makes use of the stacktrie, which is is more lenient on resource consumption, than the regular trie, in cases where we only need it for DeriveSha
This PR removes a logic in the miner, which was originally intended to help temporary testnets based on ethash from "running off into the future". If the difficulty was low, and a few computers started mining several blocks per second, the ethash rules (which demand 1s delay between blocks) would push the blocktimes further and further away.
The solution was to make the miner sleep while this happened.
Nowadays, this problem is solved instead by PoA chains, and it's recommended to let testnets and devnets be based on clique instead. The existing logic is problematic, since it can cause stalls within the miner making it difficult for remote workers to submit work if the channel is blocked on a sleep.
Credits to Saar Tochner for reporting this via the bug bounty
In miner/worker.go, there are two goroutine using channel w.newWorkCh: newWorkerLoop() sends to this channel, and mainLoop() receives from this channel. Only the receive operation is in a select.
However, w.exitCh may be closed by another goroutine. This is fine for the receive since receive is in select, but if the send operation is blocking, then it will block forever. This commit puts the send in a select, so it won't block even if w.exitCh is closed.
Similarly, there are two goroutines using channel errc: the parent that runs the test receives from it, and the child created at line 573 sends to it. If the parent goroutine exits too early by calling t.Fatalf() at line 614, then the child goroutine will be blocked at line 574 forever. This commit adds 1 buffer to errc. Now send will not block, and receive is not influenced because receive still needs to wait for the send.
A lot of times when we hit 'core' errors, example: invalid tx, the information provided is
insufficient. We miss several pieces of information: what account has nonce too high,
and what transaction in that block was offending?
This PR adds that information, using the new type of wrapped errors.
It also adds a testcase which (partly) verifies the output from the errors.
The first commit changes all usage of direct equality-checks on core errors, into
using errors.Is. The second commit adds contextual information. This wraps most
of the core errors with more information, and also wraps it one more time in
stateprocessor, to further provide tx index and tx hash, if such a tx is encoutered in
a block. The third commit uses the chainmaker to try to generate chains with such
errors in them, thus triggering the errors and checking that the generated string meets
expectations.
This PR changes several different things:
- Adds test cases for the miner loop
- Stops the worker if it wasn't already stopped in worker.Close()
- Uses channels instead of atomics in the miner.update() loop
Co-authored-by: Felix Lange <fjl@twurst.com>
