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Merge c0224bc962 into merged_master (Bitcoin PR bitcoin/bitcoin#22415)

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Andrew Poelstra 2021-08-02 16:39:39 +00:00
commit 40d1f3ffc5
7 changed files with 121 additions and 89 deletions
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120
src/validation.cpp
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@ -341,23 +341,14 @@ static bool IsCurrentForFeeEstimation(CChainState& active_chainstate) EXCLUSIVE_
return true;
}
/* Make mempool consistent after a reorg, by re-adding or recursively erasing
* disconnected block transactions from the mempool, and also removing any
* other transactions from the mempool that are no longer valid given the new
* tip/height.
*
* Note: we assume that disconnectpool only contains transactions that are NOT
* confirmed in the current chain nor already in the mempool (otherwise,
* in-mempool descendants of such transactions would be removed).
*
* Passing fAddToMempool=false will skip trying to add the transactions back,
* and instead just erase from the mempool as needed.
*/
static void UpdateMempoolForReorg(CChainState& active_chainstate, CTxMemPool& mempool, DisconnectedBlockTransactions& disconnectpool, bool fAddToMempool) EXCLUSIVE_LOCKS_REQUIRED(cs_main, mempool.cs)
void CChainState::MaybeUpdateMempoolForReorg(
DisconnectedBlockTransactions& disconnectpool,
bool fAddToMempool)
{
if (!m_mempool) return;
AssertLockHeld(cs_main);
AssertLockHeld(mempool.cs);
AssertLockHeld(m_mempool->cs);
std::vector<uint256> vHashUpdate;
// disconnectpool's insertion_order index sorts the entries from
// oldest to newest, but the oldest entry will be the last tx from the
@ -369,11 +360,13 @@ static void UpdateMempoolForReorg(CChainState& active_chainstate, CTxMemPool& me
while (it != disconnectpool.queuedTx.get<insertion_order>().rend()) {
// ignore validation errors in resurrected transactions
if (!fAddToMempool || (*it)->IsCoinBase() ||
AcceptToMemoryPool(active_chainstate, mempool, *it, true /* bypass_limits */).m_result_type != MempoolAcceptResult::ResultType::VALID) {
AcceptToMemoryPool(
*this, *m_mempool, *it, true /* bypass_limits */).m_result_type !=
MempoolAcceptResult::ResultType::VALID) {
// If the transaction doesn't make it in to the mempool, remove any
// transactions that depend on it (which would now be orphans).
mempool.removeRecursive(**it, MemPoolRemovalReason::REORG);
} else if (mempool.exists((*it)->GetHash())) {
m_mempool->removeRecursive(**it, MemPoolRemovalReason::REORG);
} else if (m_mempool->exists((*it)->GetHash())) {
vHashUpdate.push_back((*it)->GetHash());
}
++it;
@ -384,12 +377,16 @@ static void UpdateMempoolForReorg(CChainState& active_chainstate, CTxMemPool& me
// previously-confirmed transactions back to the mempool.
// UpdateTransactionsFromBlock finds descendants of any transactions in
// the disconnectpool that were added back and cleans up the mempool state.
mempool.UpdateTransactionsFromBlock(vHashUpdate);
m_mempool->UpdateTransactionsFromBlock(vHashUpdate);
// We also need to remove any now-immature transactions
mempool.removeForReorg(active_chainstate, STANDARD_LOCKTIME_VERIFY_FLAGS);
m_mempool->removeForReorg(*this, STANDARD_LOCKTIME_VERIFY_FLAGS);
// Re-limit mempool size, in case we added any transactions
LimitMempoolSize(mempool, active_chainstate.CoinsTip(), gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000, std::chrono::hours{gArgs.GetArg("-mempoolexpiry", DEFAULT_MEMPOOL_EXPIRY)});
LimitMempoolSize(
*m_mempool,
this->CoinsTip(),
gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000,
std::chrono::hours{gArgs.GetArg("-mempoolexpiry", DEFAULT_MEMPOOL_EXPIRY)});
}
/**
@ -1290,7 +1287,7 @@ void CoinsViews::InitCache()
m_cacheview = std::make_unique<CCoinsViewCache>(&m_catcherview);
}
CChainState::CChainState(CTxMemPool& mempool, BlockManager& blockman, std::optional<uint256> from_snapshot_blockhash)
CChainState::CChainState(CTxMemPool* mempool, BlockManager& blockman, std::optional<uint256> from_snapshot_blockhash)
: m_mempool(mempool),
m_params(::Params()),
m_blockman(blockman),
@ -2190,20 +2187,18 @@ bool CChainState::ConnectBlock(const CBlock& block, BlockValidationState& state,
return true;
}
CoinsCacheSizeState CChainState::GetCoinsCacheSizeState(const CTxMemPool* tx_pool)
CoinsCacheSizeState CChainState::GetCoinsCacheSizeState()
{
return this->GetCoinsCacheSizeState(
tx_pool,
m_coinstip_cache_size_bytes,
gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000);
}
CoinsCacheSizeState CChainState::GetCoinsCacheSizeState(
const CTxMemPool* tx_pool,
size_t max_coins_cache_size_bytes,
size_t max_mempool_size_bytes)
{
const int64_t nMempoolUsage = tx_pool ? tx_pool->DynamicMemoryUsage() : 0;
const int64_t nMempoolUsage = m_mempool ? m_mempool->DynamicMemoryUsage() : 0;
int64_t cacheSize = CoinsTip().DynamicMemoryUsage();
int64_t nTotalSpace =
max_coins_cache_size_bytes + std::max<int64_t>(max_mempool_size_bytes - nMempoolUsage, 0);
@ -2242,7 +2237,7 @@ bool CChainState::FlushStateToDisk(
bool fFlushForPrune = false;
bool fDoFullFlush = false;
CoinsCacheSizeState cache_state = GetCoinsCacheSizeState(&m_mempool);
CoinsCacheSizeState cache_state = GetCoinsCacheSizeState();
LOCK(cs_LastBlockFile);
if (fPruneMode && (fCheckForPruning || nManualPruneHeight > 0) && !fReindex) {
// make sure we don't prune above the blockfilterindexes bestblocks
@ -2393,12 +2388,12 @@ static void AppendWarning(bilingual_str& res, const bilingual_str& warn)
res += warn;
}
/** Check warning conditions and do some notifications on new chain tip set. */
static void UpdateTip(CTxMemPool& mempool, const CBlockIndex* pindexNew, const CChainParams& chainParams, CChainState& active_chainstate)
EXCLUSIVE_LOCKS_REQUIRED(::cs_main)
void CChainState::UpdateTip(const CBlockIndex* pindexNew)
{
// New best block
mempool.AddTransactionsUpdated(1);
if (m_mempool) {
m_mempool->AddTransactionsUpdated(1);
}
{
LOCK(g_best_block_mutex);
@ -2407,11 +2402,11 @@ static void UpdateTip(CTxMemPool& mempool, const CBlockIndex* pindexNew, const C
}
bilingual_str warning_messages;
if (!active_chainstate.IsInitialBlockDownload()) {
if (!this->IsInitialBlockDownload()) {
const CBlockIndex* pindex = pindexNew;
for (int bit = 0; bit < VERSIONBITS_NUM_BITS; bit++) {
WarningBitsConditionChecker checker(bit);
ThresholdState state = checker.GetStateFor(pindex, chainParams.GetConsensus(), warningcache[bit]);
ThresholdState state = checker.GetStateFor(pindex, m_params.GetConsensus(), warningcache[bit]);
if (state == ThresholdState::ACTIVE || state == ThresholdState::LOCKED_IN) {
const bilingual_str warning = strprintf(_("Unknown new rules activated (versionbit %i)"), bit);
if (state == ThresholdState::ACTIVE) {
@ -2426,15 +2421,15 @@ static void UpdateTip(CTxMemPool& mempool, const CBlockIndex* pindexNew, const C
pindexNew->GetBlockHash().ToString(), pindexNew->nHeight, pindexNew->nVersion,
(unsigned long)pindexNew->nChainTx,
FormatISO8601DateTime(pindexNew->GetBlockTime()),
GuessVerificationProgress(pindexNew, chainParams.GetConsensus().nPowTargetSpacing),
active_chainstate.CoinsTip().DynamicMemoryUsage() * (1.0 / (1<<20)), active_chainstate.CoinsTip().GetCacheSize(),
GuessVerificationProgress(pindexNew, m_params.GetConsensus().nPowTargetSpacing),
this->CoinsTip().DynamicMemoryUsage() * (1.0 / (1<<20)), this->CoinsTip().GetCacheSize(),
!warning_messages.empty() ? strprintf(" warning='%s'", warning_messages.original) : "");
}
/** Disconnect m_chain's tip.
* After calling, the mempool will be in an inconsistent state, with
* transactions from disconnected blocks being added to disconnectpool. You
* should make the mempool consistent again by calling UpdateMempoolForReorg.
* should make the mempool consistent again by calling MaybeUpdateMempoolForReorg.
* with cs_main held.
*
* If disconnectpool is nullptr, then no disconnected transactions are added to
@ -2444,7 +2439,7 @@ static void UpdateTip(CTxMemPool& mempool, const CBlockIndex* pindexNew, const C
bool CChainState::DisconnectTip(BlockValidationState& state, DisconnectedBlockTransactions* disconnectpool)
{
AssertLockHeld(cs_main);
AssertLockHeld(m_mempool.cs);
if (m_mempool) AssertLockHeld(m_mempool->cs);
CBlockIndex *pindexDelete = m_chain.Tip();
assert(pindexDelete);
@ -2470,7 +2465,7 @@ bool CChainState::DisconnectTip(BlockValidationState& state, DisconnectedBlockTr
return false;
}
if (disconnectpool) {
if (disconnectpool && m_mempool) {
// Save transactions to re-add to mempool at end of reorg
for (auto it = block.vtx.rbegin(); it != block.vtx.rend(); ++it) {
disconnectpool->addTransaction(*it);
@ -2478,14 +2473,14 @@ bool CChainState::DisconnectTip(BlockValidationState& state, DisconnectedBlockTr
while (disconnectpool->DynamicMemoryUsage() > MAX_DISCONNECTED_TX_POOL_SIZE * 1000) {
// Drop the earliest entry, and remove its children from the mempool.
auto it = disconnectpool->queuedTx.get<insertion_order>().begin();
m_mempool.removeRecursive(**it, MemPoolRemovalReason::REORG);
m_mempool->removeRecursive(**it, MemPoolRemovalReason::REORG);
disconnectpool->removeEntry(it);
}
}
m_chain.SetTip(pindexDelete->pprev);
UpdateTip(m_mempool, pindexDelete->pprev, m_params, *this);
UpdateTip(pindexDelete->pprev);
// Let wallets know transactions went from 1-confirmed to
// 0-confirmed or conflicted:
GetMainSignals().BlockDisconnected(pblock, pindexDelete);
@ -2547,7 +2542,7 @@ public:
bool CChainState::ConnectTip(BlockValidationState& state, CBlockIndex* pindexNew, const std::shared_ptr<const CBlock>& pblock, ConnectTrace& connectTrace, DisconnectedBlockTransactions& disconnectpool)
{
AssertLockHeld(cs_main);
AssertLockHeld(m_mempool.cs);
if (m_mempool) AssertLockHeld(m_mempool->cs);
assert(pindexNew->pprev == m_chain.Tip());
// Read block from disk.
@ -2620,13 +2615,15 @@ bool CChainState::ConnectTip(BlockValidationState& state, CBlockIndex* pindexNew
int64_t nTime5 = GetTimeMicros(); nTimeChainState += nTime5 - nTime4;
LogPrint(BCLog::BENCH, " - Writing chainstate: %.2fms [%.2fs (%.2fms/blk)]\n", (nTime5 - nTime4) * MILLI, nTimeChainState * MICRO, nTimeChainState * MILLI / nBlocksTotal);
// Remove conflicting transactions from the mempool.;
// ELEMENTS: We also eject peg-outs with now-invalid PAK proofs
// as well as peg-in inputs during transitional periods.
m_mempool.removeForBlock(blockConnecting.vtx, pindexNew->nHeight, pindexNew);
disconnectpool.removeForBlock(blockConnecting.vtx);
if (m_mempool) {
// ELEMENTS: We also eject peg-outs with now-invalid PAK proofs
// as well as peg-in inputs during transitional periods.
m_mempool->removeForBlock(blockConnecting.vtx, pindexNew->nHeight, pindexNew);
disconnectpool.removeForBlock(blockConnecting.vtx);
}
// Update m_chain & related variables.
m_chain.SetTip(pindexNew);
UpdateTip(m_mempool, pindexNew, m_params, *this);
UpdateTip(pindexNew);
int64_t nTime6 = GetTimeMicros(); nTimePostConnect += nTime6 - nTime5; nTimeTotal += nTime6 - nTime1;
LogPrint(BCLog::BENCH, " - Connect postprocess: %.2fms [%.2fs (%.2fms/blk)]\n", (nTime6 - nTime5) * MILLI, nTimePostConnect * MICRO, nTimePostConnect * MILLI / nBlocksTotal);
@ -2716,7 +2713,7 @@ void CChainState::PruneBlockIndexCandidates() {
bool CChainState::ActivateBestChainStep(BlockValidationState& state, CBlockIndex* pindexMostWork, const std::shared_ptr<const CBlock>& pblock, bool& fInvalidFound, ConnectTrace& connectTrace)
{
AssertLockHeld(cs_main);
AssertLockHeld(m_mempool.cs);
if (m_mempool) AssertLockHeld(m_mempool->cs);
const CBlockIndex* pindexOldTip = m_chain.Tip();
const CBlockIndex* pindexFork = m_chain.FindFork(pindexMostWork);
@ -2728,7 +2725,7 @@ bool CChainState::ActivateBestChainStep(BlockValidationState& state, CBlockIndex
if (!DisconnectTip(state, &disconnectpool)) {
// This is likely a fatal error, but keep the mempool consistent,
// just in case. Only remove from the mempool in this case.
UpdateMempoolForReorg(*this, m_mempool, disconnectpool, false);
MaybeUpdateMempoolForReorg(disconnectpool, false);
// If we're unable to disconnect a block during normal operation,
// then that is a failure of our local system -- we should abort
@ -2772,7 +2769,7 @@ bool CChainState::ActivateBestChainStep(BlockValidationState& state, CBlockIndex
// A system error occurred (disk space, database error, ...).
// Make the mempool consistent with the current tip, just in case
// any observers try to use it before shutdown.
UpdateMempoolForReorg(*this, m_mempool, disconnectpool, false);
MaybeUpdateMempoolForReorg(disconnectpool, false);
return false;
}
} else {
@ -2789,9 +2786,9 @@ bool CChainState::ActivateBestChainStep(BlockValidationState& state, CBlockIndex
if (fBlocksDisconnected) {
// If any blocks were disconnected, disconnectpool may be non empty. Add
// any disconnected transactions back to the mempool.
UpdateMempoolForReorg(*this, m_mempool, disconnectpool, true);
MaybeUpdateMempoolForReorg(disconnectpool, true);
}
m_mempool.check(*this);
if (m_mempool) m_mempool->check(*this);
CheckForkWarningConditions();
@ -2863,7 +2860,8 @@ bool CChainState::ActivateBestChain(BlockValidationState& state, std::shared_ptr
{
LOCK(cs_main);
LOCK(m_mempool.cs); // Lock transaction pool for at least as long as it takes for connectTrace to be consumed
// Lock transaction pool for at least as long as it takes for connectTrace to be consumed
LOCK(MempoolMutex());
CBlockIndex* starting_tip = m_chain.Tip();
bool blocks_connected = false;
do {
@ -3013,7 +3011,9 @@ bool CChainState::InvalidateBlock(BlockValidationState& state, CBlockIndex* pind
LimitValidationInterfaceQueue();
LOCK(cs_main);
LOCK(m_mempool.cs); // Lock for as long as disconnectpool is in scope to make sure UpdateMempoolForReorg is called after DisconnectTip without unlocking in between
// Lock for as long as disconnectpool is in scope to make sure MaybeUpdateMempoolForReorg is
// called after DisconnectTip without unlocking in between
LOCK(MempoolMutex());
if (!m_chain.Contains(pindex)) break;
pindex_was_in_chain = true;
CBlockIndex *invalid_walk_tip = m_chain.Tip();
@ -3027,7 +3027,7 @@ bool CChainState::InvalidateBlock(BlockValidationState& state, CBlockIndex* pind
// transactions back to the mempool if disconnecting was successful,
// and we're not doing a very deep invalidation (in which case
// keeping the mempool up to date is probably futile anyway).
UpdateMempoolForReorg(*this, m_mempool, disconnectpool, /* fAddToMempool = */ (++disconnected <= 10) && ret);
MaybeUpdateMempoolForReorg(disconnectpool, /* fAddToMempool = */ (++disconnected <= 10) && ret);
if (!ret) return false;
assert(invalid_walk_tip->pprev == m_chain.Tip());
@ -4162,10 +4162,11 @@ bool CChainState::LoadBlockIndexDB()
void CChainState::LoadMempool(const ArgsManager& args)
{
if (!m_mempool) return;
if (args.GetArg("-persistmempool", DEFAULT_PERSIST_MEMPOOL)) {
::LoadMempool(m_mempool, *this);
::LoadMempool(*m_mempool, *this);
}
m_mempool.SetIsLoaded(!ShutdownRequested());
m_mempool->SetIsLoaded(!ShutdownRequested());
}
bool CChainState::LoadChainTip()
@ -5029,7 +5030,8 @@ std::vector<CChainState*> ChainstateManager::GetAll()
return out;
}
CChainState& ChainstateManager::InitializeChainstate(CTxMemPool& mempool, const std::optional<uint256>& snapshot_blockhash)
CChainState& ChainstateManager::InitializeChainstate(
CTxMemPool* mempool, const std::optional<uint256>& snapshot_blockhash)
{
bool is_snapshot = snapshot_blockhash.has_value();
std::unique_ptr<CChainState>& to_modify =
@ -5108,7 +5110,7 @@ bool ChainstateManager::ActivateSnapshot(
}
auto snapshot_chainstate = WITH_LOCK(::cs_main, return std::make_unique<CChainState>(
this->ActiveChainstate().m_mempool, m_blockman, base_blockhash));
/* mempool */ nullptr, m_blockman, base_blockhash));
{
LOCK(::cs_main);
@ -5224,7 +5226,7 @@ bool ChainstateManager::PopulateAndValidateSnapshot(
}
const auto snapshot_cache_state = WITH_LOCK(::cs_main,
return snapshot_chainstate.GetCoinsCacheSizeState(&snapshot_chainstate.m_mempool));
return snapshot_chainstate.GetCoinsCacheSizeState());
if (snapshot_cache_state >=
CoinsCacheSizeState::CRITICAL) {