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-rw-r--r--src/validation.cpp87
1 files changed, 59 insertions, 28 deletions
diff --git a/src/validation.cpp b/src/validation.cpp
index 8f5d333170..9854740e6f 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1,5 +1,5 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2018 The Bitcoin Core developers
+// Copyright (c) 2009-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -133,7 +133,7 @@ CTxMemPool mempool(&feeEstimator);
namespace {
CBlockIndex* pindexBestInvalid = nullptr;
- CCriticalSection cs_LastBlockFile;
+ RecursiveMutex cs_LastBlockFile;
std::vector<CBlockFileInfo> vinfoBlockFile;
int nLastBlockFile = 0;
/** Global flag to indicate we should check to see if there are
@@ -180,7 +180,7 @@ std::unique_ptr<CBlockTreeDB> pblocktree;
// See definition for documentation
static void FindFilesToPruneManual(std::set<int>& setFilesToPrune, int nManualPruneHeight);
static void FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight);
-bool CheckInputs(const CTransaction& tx, TxValidationState &state, const CCoinsViewCache &inputs, unsigned int flags, bool cacheSigStore, bool cacheFullScriptStore, PrecomputedTransactionData& txdata, std::vector<CScriptCheck> *pvChecks = nullptr);
+bool CheckInputScripts(const CTransaction& tx, TxValidationState &state, const CCoinsViewCache &inputs, unsigned int flags, bool cacheSigStore, bool cacheFullScriptStore, PrecomputedTransactionData& txdata, std::vector<CScriptCheck> *pvChecks = nullptr);
static FILE* OpenUndoFile(const FlatFilePos &pos, bool fReadOnly = false);
static FlatFileSeq BlockFileSeq();
static FlatFileSeq UndoFileSeq();
@@ -396,19 +396,19 @@ static bool CheckInputsFromMempoolAndCache(const CTransaction& tx, TxValidationS
// pool.cs should be locked already, but go ahead and re-take the lock here
// to enforce that mempool doesn't change between when we check the view
- // and when we actually call through to CheckInputs
+ // and when we actually call through to CheckInputScripts
LOCK(pool.cs);
assert(!tx.IsCoinBase());
for (const CTxIn& txin : tx.vin) {
const Coin& coin = view.AccessCoin(txin.prevout);
- // At this point we haven't actually checked if the coins are all
- // available (or shouldn't assume we have, since CheckInputs does).
- // So we just return failure if the inputs are not available here,
- // and then only have to check equivalence for available inputs.
+ // AcceptToMemoryPoolWorker has already checked that the coins are
+ // available, so this shouldn't fail. If the inputs are not available
+ // here then return false.
if (coin.IsSpent()) return false;
+ // Check equivalence for available inputs.
const CTransactionRef& txFrom = pool.get(txin.prevout.hash);
if (txFrom) {
assert(txFrom->GetHash() == txin.prevout.hash);
@@ -421,8 +421,8 @@ static bool CheckInputsFromMempoolAndCache(const CTransaction& tx, TxValidationS
}
}
- // Call CheckInputs() to cache signature and script validity against current tip consensus rules.
- return CheckInputs(tx, state, view, flags, /* cacheSigStore = */ true, /* cacheFullSciptStore = */ true, txdata);
+ // Call CheckInputScripts() to cache signature and script validity against current tip consensus rules.
+ return CheckInputScripts(tx, state, view, flags, /* cacheSigStore = */ true, /* cacheFullSciptStore = */ true, txdata);
}
namespace {
@@ -906,20 +906,20 @@ bool MemPoolAccept::PolicyScriptChecks(ATMPArgs& args, Workspace& ws, Precompute
constexpr unsigned int scriptVerifyFlags = STANDARD_SCRIPT_VERIFY_FLAGS;
- // Check against previous transactions
+ // Check input scripts and signatures.
// This is done last to help prevent CPU exhaustion denial-of-service attacks.
- if (!CheckInputs(tx, state, m_view, scriptVerifyFlags, true, false, txdata)) {
+ if (!CheckInputScripts(tx, state, m_view, scriptVerifyFlags, true, false, txdata)) {
// SCRIPT_VERIFY_CLEANSTACK requires SCRIPT_VERIFY_WITNESS, so we
// need to turn both off, and compare against just turning off CLEANSTACK
// to see if the failure is specifically due to witness validation.
- TxValidationState state_dummy; // Want reported failures to be from first CheckInputs
- if (!tx.HasWitness() && CheckInputs(tx, state_dummy, m_view, scriptVerifyFlags & ~(SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_CLEANSTACK), true, false, txdata) &&
- !CheckInputs(tx, state_dummy, m_view, scriptVerifyFlags & ~SCRIPT_VERIFY_CLEANSTACK, true, false, txdata)) {
+ TxValidationState state_dummy; // Want reported failures to be from first CheckInputScripts
+ if (!tx.HasWitness() && CheckInputScripts(tx, state_dummy, m_view, scriptVerifyFlags & ~(SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_CLEANSTACK), true, false, txdata) &&
+ !CheckInputScripts(tx, state_dummy, m_view, scriptVerifyFlags & ~SCRIPT_VERIFY_CLEANSTACK, true, false, txdata)) {
// Only the witness is missing, so the transaction itself may be fine.
state.Invalid(TxValidationResult::TX_WITNESS_MUTATED,
state.GetRejectReason(), state.GetDebugMessage());
}
- return false; // state filled in by CheckInputs
+ return false; // state filled in by CheckInputScripts
}
return true;
@@ -950,7 +950,7 @@ bool MemPoolAccept::ConsensusScriptChecks(ATMPArgs& args, Workspace& ws, Precomp
// transactions into the mempool can be exploited as a DoS attack.
unsigned int currentBlockScriptVerifyFlags = GetBlockScriptFlags(::ChainActive().Tip(), chainparams.GetConsensus());
if (!CheckInputsFromMempoolAndCache(tx, state, m_view, m_pool, currentBlockScriptVerifyFlags, txdata)) {
- return error("%s: BUG! PLEASE REPORT THIS! CheckInputs failed against latest-block but not STANDARD flags %s, %s",
+ return error("%s: BUG! PLEASE REPORT THIS! CheckInputScripts failed against latest-block but not STANDARD flags %s, %s",
__func__, hash.ToString(), FormatStateMessage(state));
}
@@ -1466,8 +1466,10 @@ void InitScriptExecutionCache() {
}
/**
- * Check whether all inputs of this transaction are valid (no double spends, scripts & sigs, amounts)
- * This does not modify the UTXO set.
+ * Check whether all of this transaction's input scripts succeed.
+ *
+ * This involves ECDSA signature checks so can be computationally intensive. This function should
+ * only be called after the cheap sanity checks in CheckTxInputs passed.
*
* If pvChecks is not nullptr, script checks are pushed onto it instead of being performed inline. Any
* script checks which are not necessary (eg due to script execution cache hits) are, obviously,
@@ -1482,7 +1484,7 @@ void InitScriptExecutionCache() {
*
* Non-static (and re-declared) in src/test/txvalidationcache_tests.cpp
*/
-bool CheckInputs(const CTransaction& tx, TxValidationState &state, const CCoinsViewCache &inputs, unsigned int flags, bool cacheSigStore, bool cacheFullScriptStore, PrecomputedTransactionData& txdata, std::vector<CScriptCheck> *pvChecks) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
+bool CheckInputScripts(const CTransaction& tx, TxValidationState &state, const CCoinsViewCache &inputs, unsigned int flags, bool cacheSigStore, bool cacheFullScriptStore, PrecomputedTransactionData& txdata, std::vector<CScriptCheck> *pvChecks) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
{
if (tx.IsCoinBase()) return true;
@@ -2129,11 +2131,11 @@ bool CChainState::ConnectBlock(const CBlock& block, BlockValidationState& state,
std::vector<CScriptCheck> vChecks;
bool fCacheResults = fJustCheck; /* Don't cache results if we're actually connecting blocks (still consult the cache, though) */
TxValidationState tx_state;
- if (fScriptChecks && !CheckInputs(tx, tx_state, view, flags, fCacheResults, fCacheResults, txdata[i], g_parallel_script_checks ? &vChecks : nullptr)) {
+ if (fScriptChecks && !CheckInputScripts(tx, tx_state, view, flags, fCacheResults, fCacheResults, txdata[i], g_parallel_script_checks ? &vChecks : nullptr)) {
// Any transaction validation failure in ConnectBlock is a block consensus failure
state.Invalid(BlockValidationResult::BLOCK_CONSENSUS,
tx_state.GetRejectReason(), tx_state.GetDebugMessage());
- return error("ConnectBlock(): CheckInputs on %s failed with %s",
+ return error("ConnectBlock(): CheckInputScripts on %s failed with %s",
tx.GetHash().ToString(), FormatStateMessage(state));
}
control.Add(vChecks);
@@ -2185,13 +2187,44 @@ bool CChainState::ConnectBlock(const CBlock& block, BlockValidationState& state,
return true;
}
+CoinsCacheSizeState CChainState::GetCoinsCacheSizeState(const CTxMemPool& tx_pool)
+{
+ return this->GetCoinsCacheSizeState(
+ tx_pool,
+ nCoinCacheUsage,
+ 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)
+{
+ int64_t nMempoolUsage = tx_pool.DynamicMemoryUsage();
+ int64_t cacheSize = CoinsTip().DynamicMemoryUsage();
+ int64_t nTotalSpace =
+ max_coins_cache_size_bytes + std::max<int64_t>(max_mempool_size_bytes - nMempoolUsage, 0);
+
+ //! No need to periodic flush if at least this much space still available.
+ static constexpr int64_t MAX_BLOCK_COINSDB_USAGE_BYTES = 10 * 1024 * 1024; // 10MB
+ int64_t large_threshold =
+ std::max((9 * nTotalSpace) / 10, nTotalSpace - MAX_BLOCK_COINSDB_USAGE_BYTES);
+
+ if (cacheSize > nTotalSpace) {
+ LogPrintf("Cache size (%s) exceeds total space (%s)\n", cacheSize, nTotalSpace);
+ return CoinsCacheSizeState::CRITICAL;
+ } else if (cacheSize > large_threshold) {
+ return CoinsCacheSizeState::LARGE;
+ }
+ return CoinsCacheSizeState::OK;
+}
+
bool CChainState::FlushStateToDisk(
const CChainParams& chainparams,
BlockValidationState &state,
FlushStateMode mode,
int nManualPruneHeight)
{
- int64_t nMempoolUsage = mempool.DynamicMemoryUsage();
LOCK(cs_main);
assert(this->CanFlushToDisk());
static int64_t nLastWrite = 0;
@@ -2206,6 +2239,7 @@ bool CChainState::FlushStateToDisk(
{
bool fFlushForPrune = false;
bool fDoFullFlush = false;
+ CoinsCacheSizeState cache_state = GetCoinsCacheSizeState(::mempool);
LOCK(cs_LastBlockFile);
if (fPruneMode && (fCheckForPruning || nManualPruneHeight > 0) && !fReindex) {
if (nManualPruneHeight > 0) {
@@ -2234,13 +2268,10 @@ bool CChainState::FlushStateToDisk(
if (nLastFlush == 0) {
nLastFlush = nNow;
}
- int64_t nMempoolSizeMax = gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
- int64_t cacheSize = CoinsTip().DynamicMemoryUsage();
- int64_t nTotalSpace = nCoinCacheUsage + std::max<int64_t>(nMempoolSizeMax - nMempoolUsage, 0);
// The cache is large and we're within 10% and 10 MiB of the limit, but we have time now (not in the middle of a block processing).
- bool fCacheLarge = mode == FlushStateMode::PERIODIC && cacheSize > std::max((9 * nTotalSpace) / 10, nTotalSpace - MAX_BLOCK_COINSDB_USAGE * 1024 * 1024);
+ bool fCacheLarge = mode == FlushStateMode::PERIODIC && cache_state >= CoinsCacheSizeState::LARGE;
// The cache is over the limit, we have to write now.
- bool fCacheCritical = mode == FlushStateMode::IF_NEEDED && cacheSize > nTotalSpace;
+ bool fCacheCritical = mode == FlushStateMode::IF_NEEDED && cache_state >= CoinsCacheSizeState::CRITICAL;
// It's been a while since we wrote the block index to disk. Do this frequently, so we don't need to redownload after a crash.
bool fPeriodicWrite = mode == FlushStateMode::PERIODIC && nNow > nLastWrite + (int64_t)DATABASE_WRITE_INTERVAL * 1000000;
// It's been very long since we flushed the cache. Do this infrequently, to optimize cache usage.
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-07 06:21:32 +0000