#include <validation.h>
#include <arith_uint256.h>
#include <chain.h>
#include <chainparams.h>
#include <checkqueue.h>
#include <consensus/amount.h>
#include <consensus/consensus.h>
#include <consensus/merkle.h>
#include <consensus/tx_check.h>
#include <consensus/tx_verify.h>
#include <consensus/validation.h>
#include <cuckoocache.h>
#include <deploymentstatus.h>
#include <flatfile.h>
#include <hash.h>
#include <index/blockfilterindex.h>
#include <logging.h>
#include <logging/timer.h>
#include <node/blockstorage.h>
#include <node/coinstats.h>
#include <node/ui_interface.h>
#include <node/utxo_snapshot.h>
#include <policy/policy.h>
#include <policy/rbf.h>
#include <policy/settings.h>
#include <pow.h>
#include <primitives/block.h>
#include <primitives/transaction.h>
#include <random.h>
#include <reverse_iterator.h>
#include <script/script.h>
#include <script/sigcache.h>
#include <shutdown.h>
#include <signet.h>
#include <timedata.h>
#include <tinyformat.h>
#include <txdb.h>
#include <txmempool.h>
#include <uint256.h>
#include <undo.h>
#include <util/check.h>
#include <util/hasher.h>
#include <util/moneystr.h>
#include <util/rbf.h>
#include <util/strencodings.h>
#include <util/system.h>
#include <util/trace.h>
#include <util/translation.h>
#include <validationinterface.h>
#include <warnings.h>
#include <algorithm>
#include <numeric>
#include <optional>
#include <string>
#include <boost/algorithm/string/replace.hpp>

Classes
class	WarningBitsConditionChecker
	Threshold condition checker that triggers when unknown versionbits are seen on the network. More...

struct	PerBlockConnectTrace

class	ConnectTrace
	Used to track blocks whose transactions were applied to the UTXO state as a part of a single ActivateBestChainStep call. More...

Macros
#define	MICRO 0.000001

#define	MILLI 0.001

Functions
bool	CheckInputScripts (const CTransaction &tx, TxValidationState &state, const CCoinsViewCache &inputs, unsigned int flags, bool cacheSigStore, bool cacheFullScriptStore, PrecomputedTransactionData &txdata, std::vector< CScriptCheck > *pvChecks)
	Check whether all of this transaction's input scripts succeed. More...

bool	CheckFinalTx (const CBlockIndex *active_chain_tip, const CTransaction &tx, int flags)
	Transaction validation functions. More...

bool	CheckSequenceLocks (CBlockIndex tip, const CCoinsView &coins_view, const CTransaction &tx, int flags, LockPoints lp, bool useExistingLockPoints)
	Check if transaction will be BIP68 final in the next block to be created on top of tip. More...

static unsigned int	GetBlockScriptFlags (const CBlockIndex *pindex, const Consensus::Params &chainparams)

static void	LimitMempoolSize (CTxMemPool &pool, CCoinsViewCache &coins_cache, size_t limit, std::chrono::seconds age) EXCLUSIVE_LOCKS_REQUIRED(

static bool	IsCurrentForFeeEstimation (CChainState &active_chainstate) EXCLUSIVE_LOCKS_REQUIRED(cs_main)

static bool	CheckInputsFromMempoolAndCache (const CTransaction &tx, TxValidationState &state, const CCoinsViewCache &view, const CTxMemPool &pool, unsigned int flags, PrecomputedTransactionData &txdata, CCoinsViewCache &coins_tip) EXCLUSIVE_LOCKS_REQUIRED(cs_main
	Checks to avoid mempool polluting consensus critical paths since cached signature and script validity results will be reused if we validate this transaction again during block validation. More...

	AssertLockHeld (pool.cs)

	assert (!tx.IsCoinBase())

	for (const CTxIn &txin :tx.vin)

return	CheckInputScripts (tx, state, view, flags, true, true, txdata)

MempoolAcceptResult	AcceptToMemoryPool (CChainState &active_chainstate, const CTransactionRef &tx, int64_t accept_time, bool bypass_limits, bool test_accept) EXCLUSIVE_LOCKS_REQUIRED(
	Try to add a transaction to the mempool. More...

PackageMempoolAcceptResult	ProcessNewPackage (CChainState &active_chainstate, CTxMemPool &pool, const Package &package, bool test_accept)
	Validate (and maybe submit) a package to the mempool. More...

CAmount	GetBlockSubsidy (int nHeight, const Consensus::Params &consensusParams)

static void	AlertNotify (const std::string &strMessage)

void	UpdateCoins (const CTransaction &tx, CCoinsViewCache &inputs, CTxUndo &txundo, int nHeight)

void	InitScriptExecutionCache ()
	Initializes the script-execution cache. More...

bool	AbortNode (BlockValidationState &state, const std::string &strMessage, const bilingual_str &userMessage)

int	ApplyTxInUndo (Coin &&undo, CCoinsViewCache &view, const COutPoint &out)
	Restore the UTXO in a Coin at a given COutPoint. More...

void	StartScriptCheckWorkerThreads (int threads_num)
	Run instances of script checking worker threads. More...

void	StopScriptCheckWorkerThreads ()
	Stop all of the script checking worker threads. More...

static ThresholdConditionCache warningcache[VERSIONBITS_NUM_BITS]	GUARDED_BY (cs_main)

static void	DoWarning (const bilingual_str &warning)

static void	AppendWarning (bilingual_str &res, const bilingual_str &warn)
	Private helper function that concatenates warning messages. More...

static void	UpdateTipLog (const CCoinsViewCache &coins_tip, const CBlockIndex *tip, const CChainParams &params, const std::string &func_name, const std::string &prefix, const std::string &warning_messages) EXCLUSIVE_LOCKS_REQUIRED(

static SynchronizationState	GetSynchronizationState (bool init)

static bool	NotifyHeaderTip (CChainState &chainstate) LOCKS_EXCLUDED(cs_main)

static void	LimitValidationInterfaceQueue () LOCKS_EXCLUDED(cs_main)

static bool	CheckBlockHeader (const CBlockHeader &block, BlockValidationState &state, const Consensus::Params &consensusParams, bool fCheckPOW=true)

bool	CheckBlock (const CBlock &block, BlockValidationState &state, const Consensus::Params &consensusParams, bool fCheckPOW, bool fCheckMerkleRoot)
	Functions for validating blocks and updating the block tree. More...

void	UpdateUncommittedBlockStructures (CBlock &block, const CBlockIndex *pindexPrev, const Consensus::Params &consensusParams)
	Update uncommitted block structures (currently: only the witness reserved value). More...

std::vector< unsigned char >	GenerateCoinbaseCommitment (CBlock &block, const CBlockIndex *pindexPrev, const Consensus::Params &consensusParams)
	Produce the necessary coinbase commitment for a block (modifies the hash, don't call for mined blocks). More...

static bool	ContextualCheckBlockHeader (const CBlockHeader &block, BlockValidationState &state, BlockManager &blockman, const CChainParams &params, const CBlockIndex *pindexPrev, int64_t nAdjustedTime) EXCLUSIVE_LOCKS_REQUIRED(
	Context-dependent validity checks. More...

static bool	ContextualCheckBlock (const CBlock &block, BlockValidationState &state, const Consensus::Params &consensusParams, const CBlockIndex *pindexPrev)
	NOTE: This function is not currently invoked by ConnectBlock(), so we should consider upgrade issues if we change which consensus rules are enforced in this function (eg by adding a new consensus rule). More...

bool	TestBlockValidity (BlockValidationState &state, const CChainParams &chainparams, CChainState &chainstate, const CBlock &block, CBlockIndex *pindexPrev, bool fCheckPOW, bool fCheckMerkleRoot)
	Check a block is completely valid from start to finish (only works on top of our current best block) More...

void	PruneBlockFilesManual (CChainState &active_chainstate, int nManualPruneHeight)
	Prune block files up to a given height. More...

void	UnloadBlockIndex (CTxMemPool *mempool, ChainstateManager &chainman)
	Unload database information. More...

bool	LoadMempool (CTxMemPool &pool, CChainState &active_chainstate, FopenFn mockable_fopen_function)
	Load the mempool from disk. More...

bool	DumpMempool (const CTxMemPool &pool, FopenFn mockable_fopen_function, bool skip_file_commit)
	Dump the mempool to disk. More...

double	GuessVerificationProgress (const ChainTxData &data, const CBlockIndex *pindex)
	Guess how far we are in the verification process at the given block index require cs_main if pindex has not been validated yet (because nChainTx might be unset) More...

const AssumeutxoData *	ExpectedAssumeutxo (const int height, const CChainParams &chainparams)
	Return the expected assumeutxo value for a given height, if one exists. More...

static void	FlushSnapshotToDisk (CCoinsViewCache &coins_cache, bool snapshot_loaded)

Variables
static const unsigned int	EXTRA_DESCENDANT_TX_SIZE_LIMIT = 10000
	An extra transaction can be added to a package, as long as it only has one ancestor and is no larger than this. More...

static const unsigned int	MAX_DISCONNECTED_TX_POOL_SIZE = 20000
	Maximum kilobytes for transactions to store for processing during reorg. More...

static constexpr std::chrono::hours	DATABASE_WRITE_INTERVAL {1}
	Time to wait between writing blocks/block index to disk. More...

static constexpr std::chrono::hours	DATABASE_FLUSH_INTERVAL {24}
	Time to wait between flushing chainstate to disk. More...

static constexpr std::chrono::hours	MAX_FEE_ESTIMATION_TIP_AGE {3}
	Maximum age of our tip for us to be considered current for fee estimation. More...

const std::vector< std::string >	CHECKLEVEL_DOC
	Documentation for argument 'checklevel'. More...

RecursiveMutex	cs_main
	Mutex to guard access to validation specific variables, such as reading or changing the chainstate. More...

CBlockIndex *	pindexBestHeader = nullptr
	Best header we've seen so far (used for getheaders queries' starting points). More...

Mutex	g_best_block_mutex

std::condition_variable	g_best_block_cv

uint256	g_best_block
	Used to notify getblocktemplate RPC of new tips. More...

bool	g_parallel_script_checks {false}
	Whether there are dedicated script-checking threads running. More...

bool	fRequireStandard = true

bool	fCheckBlockIndex = false

bool	fCheckpointsEnabled = DEFAULT_CHECKPOINTS_ENABLED

int64_t	nMaxTipAge = DEFAULT_MAX_TIP_AGE
	If the tip is older than this (in seconds), the node is considered to be in initial block download. More...

uint256	hashAssumeValid
	Block hash whose ancestors we will assume to have valid scripts without checking them. More...

arith_uint256	nMinimumChainWork
	Minimum work we will assume exists on some valid chain. More...

CFeeRate	minRelayTxFee = CFeeRate(DEFAULT_MIN_RELAY_TX_FEE)
	A fee rate smaller than this is considered zero fee (for relaying, mining and transaction creation) More...

static bool pool	cs

static CuckooCache::cache< uint256, SignatureCacheHasher >	g_scriptExecutionCache

static CSHA256	g_scriptExecutionCacheHasher

static CCheckQueue< CScriptCheck >	scriptcheckqueue (128)

static int64_t	nTimeCheck = 0

static int64_t	nTimeForks = 0

static int64_t	nTimeVerify = 0

static int64_t	nTimeConnect = 0

static int64_t	nTimeIndex = 0

static int64_t	nTimeTotal = 0

static int64_t	nBlocksTotal = 0

static int64_t	nTimeReadFromDisk = 0

static int64_t	nTimeConnectTotal = 0

static int64_t	nTimeFlush = 0

static int64_t	nTimeChainState = 0

static int64_t	nTimePostConnect = 0

static const uint64_t	MEMPOOL_DUMP_VERSION = 1

Macro Definition Documentation

◆ MICRO

#define MICRO 0.000001

Definition at line 84 of file validation.cpp.

◆ MILLI

#define MILLI 0.001

Definition at line 85 of file validation.cpp.

Function Documentation

◆ AbortNode()

bool AbortNode	(	BlockValidationState &	state,
		const std::string &	strMessage,
		const bilingual_str &	userMessage
	)

Definition at line 1722 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ AcceptToMemoryPool()

MempoolAcceptResult AcceptToMemoryPool	(	CChainState &	active_chainstate,
		const CTransactionRef &	tx,
		int64_t	accept_time,
		bool	bypass_limits,
		bool	test_accept
	)

Try to add a transaction to the mempool.

This is an internal function and is exposed only for testing. Client code should use ChainstateManager::ProcessTransaction()

Parameters

[in]	active_chainstate	Reference to the active chainstate.
[in]	tx	The transaction to submit for mempool acceptance.
[in]	accept_time	The timestamp for adding the transaction to the mempool. It is also used to determine when the entry expires.
[in]	bypass_limits	When true, don't enforce mempool fee and capacity limits.
[in]	test_accept	When true, run validation checks but don't submit to mempool.

Returns: a MempoolAcceptResult indicating whether the transaction was accepted/rejected with reason.

Definition at line 1355 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ AlertNotify()

static void AlertNotify ( const std::string & strMessage )

static

Definition at line 1501 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ AppendWarning()

static void AppendWarning	(	bilingual_str &	res,
		const bilingual_str &	warn
	)

static

Private helper function that concatenates warning messages.

Definition at line 2423 of file validation.cpp.

Here is the call graph for this function:

◆ ApplyTxInUndo()

int ApplyTxInUndo	(	Coin &&	undo,
		CCoinsViewCache &	view,
		const COutPoint &	out
	)

Restore the UTXO in a Coin at a given COutPoint.

Parameters

undo	The Coin to be restored.
view	The coins view to which to apply the changes.
out	The out point that corresponds to the tx input.

Returns: A DisconnectResult as an int

Definition at line 1735 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ assert()

assert ( !tx. IsCoinBase() )

◆ AssertLockHeld()

AssertLockHeld ( pool. cs )

◆ CheckBlock()

bool CheckBlock	(	const CBlock &	block,
		BlockValidationState &	state,
		const Consensus::Params &	consensusParams,
		bool	fCheckPOW = `true`,
		bool	fCheckMerkleRoot = `true`
	)

Functions for validating blocks and updating the block tree.

Context-independent validity checks

Definition at line 3240 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CheckBlockHeader()

static bool CheckBlockHeader	(	const CBlockHeader &	block,
		BlockValidationState &	state,
		const Consensus::Params &	consensusParams,
		bool	fCheckPOW = `true`
	)

static

Definition at line 3231 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CheckFinalTx()

bool CheckFinalTx	(	const CBlockIndex *	active_chain_tip,
		const CTransaction &	tx,
		int	flags = `-1`
	)

Transaction validation functions.

Check if transaction will be final in the next block to be created.

Calls IsFinalTx() with current block height and appropriate block time.

See consensus/consensus.h for flag definitions.

Definition at line 181 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CheckInputScripts() [1/2]

bool CheckInputScripts	(	const CTransaction &	tx,
		TxValidationState &	state,
		const CCoinsViewCache &	inputs,
		unsigned int	flags,
		bool	cacheSigStore,
		bool	cacheFullScriptStore,
		PrecomputedTransactionData &	txdata,
		std::vector< CScriptCheck > *	pvChecks
	)

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, not pushed onto pvChecks/run.

Setting cacheSigStore/cacheFullScriptStore to false will remove elements from the corresponding cache which are matched. This is useful for checking blocks where we will likely never need the cache entry again.

Note that we may set state.reason to NOT_STANDARD for extra soft-fork flags in flags, block-checking callers should probably reset it to CONSENSUS in such cases.

Non-static (and re-declared) in src/test/txvalidationcache_tests.cpp

Definition at line 1634 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CheckInputScripts() [2/2]

return CheckInputScripts	(	tx	,
		state	,
		view	,
		flags	,
		true	,
		true	,
		txdata
	)

◆ CheckInputsFromMempoolAndCache()

static bool CheckInputsFromMempoolAndCache	(	const CTransaction &	tx,
		TxValidationState &	state,
		const CCoinsViewCache &	view,
		const CTxMemPool &	pool,
		unsigned int	flags,
		PrecomputedTransactionData &	txdata,
		CCoinsViewCache &	coins_tip
	)

static

Checks to avoid mempool polluting consensus critical paths since cached signature and script validity results will be reused if we validate this transaction again during block validation.

◆ CheckSequenceLocks()

bool CheckSequenceLocks	(	CBlockIndex *	tip,
		const CCoinsView &	coins_view,
		const CTransaction &	tx,
		int	flags,
		LockPoints *	lp = `nullptr`,
		bool	useExistingLockPoints = `false`
	)

Check if transaction will be BIP68 final in the next block to be created on top of tip.

Parameters

[in]	tip	Chain tip to check tx sequence locks against. For example, the tip of the current active chain.
[in]	coins_view	Any CCoinsView that provides access to the relevant coins for checking sequence locks. For example, it can be a CCoinsViewCache that isn't connected to anything but contains all the relevant coins, or a CCoinsViewMemPool that is connected to the mempool and chainstate UTXO set. In the latter case, the caller is responsible for holding the appropriate locks to ensure that calls to GetCoin() return correct coins. Simulates calling SequenceLocks() with data from the tip passed in. Optionally stores in LockPoints the resulting height and time calculated and the hash of the block needed for calculation or skips the calculation and uses the LockPoints passed in for evaluation. The LockPoints should not be considered valid if CheckSequenceLocks returns false.

See consensus/consensus.h for flag definitions.

Definition at line 214 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ ContextualCheckBlock()

static bool ContextualCheckBlock	(	const CBlock &	block,
		BlockValidationState &	state,
		const Consensus::Params &	consensusParams,
		const CBlockIndex *	pindexPrev
	)

static

NOTE: This function is not currently invoked by ConnectBlock(), so we should consider upgrade issues if we change which consensus rules are enforced in this function (eg by adding a new consensus rule).

See comment in ConnectBlock(). Note that -reindex-chainstate skips the validation that happens here!

Definition at line 3410 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ ContextualCheckBlockHeader()

static bool ContextualCheckBlockHeader	(	const CBlockHeader &	block,
		BlockValidationState &	state,
		BlockManager &	blockman,
		const CChainParams &	params,
		const CBlockIndex *	pindexPrev,
		int64_t	nAdjustedTime
	)

static

Context-dependent validity checks.

By "context", we mean only the previous block headers, but not the UTXO set; UTXO-related validity checks are done in ConnectBlock(). NOTE: This function is not currently invoked by ConnectBlock(), so we should consider upgrade issues if we change which consensus rules are enforced in this function (eg by adding a new consensus rule). See comment in ConnectBlock(). Note that -reindex-chainstate skips the validation that happens here!

Definition at line 3362 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ DoWarning()

static void DoWarning ( const bilingual_str & warning )

static

Definition at line 2412 of file validation.cpp.

Here is the call graph for this function:

◆ DumpMempool()

bool DumpMempool	(	const CTxMemPool &	pool,
		FopenFn	mockable_fopen_function,
		bool	skip_file_commit
	)

Dump the mempool to disk.

Definition at line 4593 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ ExpectedAssumeutxo()

const AssumeutxoData* ExpectedAssumeutxo	(	const int	height,
		const CChainParams &	params
	)

Return the expected assumeutxo value for a given height, if one exists.

Parameters

[in] height Get the assumeutxo value for this height.

Returns: empty if no assumeutxo configuration exists for the given height.

Definition at line 4723 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ FlushSnapshotToDisk()

static void FlushSnapshotToDisk	(	CCoinsViewCache &	coins_cache,
		bool	snapshot_loaded
	)

static

Definition at line 4818 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ for()

for ( const CTxIn &txin :tx. vin )

Definition at line 427 of file validation.cpp.

Here is the call graph for this function:

◆ GenerateCoinbaseCommitment()

std::vector<unsigned char> GenerateCoinbaseCommitment	(	CBlock &	block,
		const CBlockIndex *	pindexPrev,
		const Consensus::Params &	consensusParams
	)

Produce the necessary coinbase commitment for a block (modifies the hash, don't call for mined blocks).

Definition at line 3326 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ GetBlockScriptFlags()

static unsigned int GetBlockScriptFlags	(	const CBlockIndex *	pindex,
		const Consensus::Params &	chainparams
	)

static

Definition at line 1863 of file validation.cpp.

Here is the call graph for this function:

◆ GetBlockSubsidy()

CAmount GetBlockSubsidy	(	int	nHeight,
		const Consensus::Params &	consensusParams
	)

Definition at line 1414 of file validation.cpp.

Here is the caller graph for this function:

◆ GetSynchronizationState()

static SynchronizationState GetSynchronizationState ( bool init )

static

Definition at line 2837 of file validation.cpp.

Here is the caller graph for this function:

◆ GUARDED_BY()

static ThresholdConditionCache warningcache [VERSIONBITS_NUM_BITS] GUARDED_BY ( cs_main )

static

◆ GuessVerificationProgress()

double GuessVerificationProgress	(	const ChainTxData &	data,
		const CBlockIndex *	pindex
	)

Guess how far we are in the verification process at the given block index require cs_main if pindex has not been validated yet (because nChainTx might be unset)

Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip).

Definition at line 4656 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ InitScriptExecutionCache()

void InitScriptExecutionCache ( )

Initializes the script-execution cache.

Definition at line 1599 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ IsCurrentForFeeEstimation()

static bool IsCurrentForFeeEstimation ( CChainState & active_chainstate )

static

Definition at line 304 of file validation.cpp.

Here is the call graph for this function:

◆ LimitMempoolSize()

static void LimitMempoolSize	(	CTxMemPool &	pool,
		CCoinsViewCache &	coins_cache,
		size_t	limit,
		std::chrono::seconds	age
	)

static

Definition at line 288 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ LimitValidationInterfaceQueue()

static void LimitValidationInterfaceQueue ( )

static

Definition at line 2866 of file validation.cpp.

Here is the call graph for this function:

◆ LoadMempool()

bool LoadMempool	(	CTxMemPool &	pool,
		CChainState &	active_chainstate,
		FopenFn	mockable_fopen_function
	)

Load the mempool from disk.

Definition at line 4509 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ NotifyHeaderTip()

static bool NotifyHeaderTip ( CChainState & chainstate )

static

Definition at line 2844 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ ProcessNewPackage()

PackageMempoolAcceptResult ProcessNewPackage	(	CChainState &	active_chainstate,
		CTxMemPool &	pool,
		const Package &	txns,
		bool	test_accept
	)

Validate (and maybe submit) a package to the mempool.

See doc/policy/packages.md for full details on package validation rules.

Parameters

[in] test_accept When true, run validation checks but don't submit to mempool.

Returns: a PackageMempoolAcceptResult which includes a MempoolAcceptResult for each transaction. If a transaction fails, validation will exit early and some results may be missing. It is also possible for the package to be partially submitted.

Definition at line 1382 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ PruneBlockFilesManual()

void PruneBlockFilesManual	(	CChainState &	active_chainstate,
		int	nManualPruneHeight
	)

Prune block files up to a given height.

Definition at line 3780 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ StartScriptCheckWorkerThreads()

void StartScriptCheckWorkerThreads ( int threads_num )

Run instances of script checking worker threads.

Definition at line 1826 of file validation.cpp.

Here is the caller graph for this function:

◆ StopScriptCheckWorkerThreads()

void StopScriptCheckWorkerThreads ( )

Stop all of the script checking worker threads.

Definition at line 1831 of file validation.cpp.

Here is the caller graph for this function:

◆ TestBlockValidity()

bool TestBlockValidity	(	BlockValidationState &	state,
		const CChainParams &	chainparams,
		CChainState &	chainstate,
		const CBlock &	block,
		CBlockIndex *	pindexPrev,
		bool	fCheckPOW,
		bool	fCheckMerkleRoot
	)

Check a block is completely valid from start to finish (only works on top of our current best block)

Definition at line 3747 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ UnloadBlockIndex()

void UnloadBlockIndex	(	CTxMemPool *	mempool,
		ChainstateManager &	chainman
	)

Unload database information.

Definition at line 4063 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ UpdateCoins()

void UpdateCoins	(	const CTransaction &	tx,
		CCoinsViewCache &	inputs,
		CTxUndo &	txundo,
		int	nHeight
	)

Definition at line 1575 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

◆ UpdateTipLog()

static void UpdateTipLog	(	const CCoinsViewCache &	coins_tip,
		const CBlockIndex *	tip,
		const CChainParams &	params,
		const std::string &	func_name,
		const std::string &	prefix,
		const std::string &	warning_messages
	)

static

Definition at line 2429 of file validation.cpp.

Here is the call graph for this function:

◆ UpdateUncommittedBlockStructures()

void UpdateUncommittedBlockStructures	(	CBlock &	block,
		const CBlockIndex *	pindexPrev,
		const Consensus::Params &	consensusParams
	)

Update uncommitted block structures (currently: only the witness reserved value).

This is safe for submitted blocks.

Definition at line 3314 of file validation.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

◆ CHECKLEVEL_DOC

const std::vector<std::string> CHECKLEVEL_DOC

Initial value:

{
    "level 0 reads the blocks from disk",
    "level 1 verifies block validity",
    "level 2 verifies undo data",
    "level 3 checks disconnection of tip blocks",
    "level 4 tries to reconnect the blocks",
    "each level includes the checks of the previous levels",
}

Documentation for argument 'checklevel'.

Definition at line 101 of file validation.cpp.

◆ cs

bool pool cs

Initial value:

{

AssertLockHeld(cs_main)

Definition at line 422 of file validation.cpp.

◆ cs_main

RecursiveMutex cs_main

Mutex to guard access to validation specific variables, such as reading or changing the chainstate.

This may also need to be locked when updating the transaction pool, e.g. on AcceptToMemoryPool. See CTxMemPool::cs comment for details.

The transaction pool has a separate lock to allow reading from it and the chainstate at the same time.

Definition at line 138 of file validation.cpp.

◆ DATABASE_FLUSH_INTERVAL

constexpr std::chrono::hours DATABASE_FLUSH_INTERVAL {24}

staticconstexpr

Time to wait between flushing chainstate to disk.

Definition at line 98 of file validation.cpp.

◆ DATABASE_WRITE_INTERVAL

constexpr std::chrono::hours DATABASE_WRITE_INTERVAL {1}

staticconstexpr

Time to wait between writing blocks/block index to disk.

Definition at line 96 of file validation.cpp.

◆ EXTRA_DESCENDANT_TX_SIZE_LIMIT

const unsigned int EXTRA_DESCENDANT_TX_SIZE_LIMIT = 10000

static

An extra transaction can be added to a package, as long as it only has one ancestor and is no larger than this.

Not really any reason to make this configurable as it doesn't materially change DoS parameters.

Definition at line 92 of file validation.cpp.

◆ fCheckBlockIndex

bool fCheckBlockIndex = false

Definition at line 146 of file validation.cpp.

◆ fCheckpointsEnabled

bool fCheckpointsEnabled = DEFAULT_CHECKPOINTS_ENABLED

Definition at line 147 of file validation.cpp.

◆ fRequireStandard

bool fRequireStandard = true

Definition at line 145 of file validation.cpp.

◆ g_best_block

uint256 g_best_block

Used to notify getblocktemplate RPC of new tips.

Definition at line 143 of file validation.cpp.

◆ g_best_block_cv

std::condition_variable g_best_block_cv

Definition at line 142 of file validation.cpp.

◆ g_best_block_mutex

Mutex g_best_block_mutex

Definition at line 141 of file validation.cpp.

◆ g_parallel_script_checks

bool g_parallel_script_checks {false}

Whether there are dedicated script-checking threads running.

False indicates all script checking is done on the main threadMessageHandler thread.

Definition at line 144 of file validation.cpp.

◆ g_scriptExecutionCache

CuckooCache::cache<uint256, SignatureCacheHasher> g_scriptExecutionCache

static

Definition at line 1596 of file validation.cpp.

◆ g_scriptExecutionCacheHasher

CSHA256 g_scriptExecutionCacheHasher

static

Definition at line 1597 of file validation.cpp.

◆ hashAssumeValid

uint256 hashAssumeValid

Block hash whose ancestors we will assume to have valid scripts without checking them.

Definition at line 150 of file validation.cpp.

◆ MAX_DISCONNECTED_TX_POOL_SIZE

const unsigned int MAX_DISCONNECTED_TX_POOL_SIZE = 20000

static

Maximum kilobytes for transactions to store for processing during reorg.

Definition at line 94 of file validation.cpp.

◆ MAX_FEE_ESTIMATION_TIP_AGE

constexpr std::chrono::hours MAX_FEE_ESTIMATION_TIP_AGE {3}

staticconstexpr

Maximum age of our tip for us to be considered current for fee estimation.

Definition at line 100 of file validation.cpp.

◆ MEMPOOL_DUMP_VERSION

const uint64_t MEMPOOL_DUMP_VERSION = 1

static

Definition at line 4507 of file validation.cpp.

◆ minRelayTxFee

CFeeRate minRelayTxFee = CFeeRate(DEFAULT_MIN_RELAY_TX_FEE)

A fee rate smaller than this is considered zero fee (for relaying, mining and transaction creation)

Definition at line 153 of file validation.cpp.

◆ nBlocksTotal

int64_t nBlocksTotal = 0

static

Definition at line 1916 of file validation.cpp.

◆ nMaxTipAge

int64_t nMaxTipAge = DEFAULT_MAX_TIP_AGE

If the tip is older than this (in seconds), the node is considered to be in initial block download.

Definition at line 148 of file validation.cpp.

◆ nMinimumChainWork

arith_uint256 nMinimumChainWork

Minimum work we will assume exists on some valid chain.

Definition at line 151 of file validation.cpp.

◆ nTimeChainState

int64_t nTimeChainState = 0

static

Definition at line 2560 of file validation.cpp.

◆ nTimeCheck

int64_t nTimeCheck = 0

static

Definition at line 1910 of file validation.cpp.

◆ nTimeConnect

int64_t nTimeConnect = 0

static

Definition at line 1913 of file validation.cpp.

◆ nTimeConnectTotal

int64_t nTimeConnectTotal = 0

static

Definition at line 2558 of file validation.cpp.

◆ nTimeFlush

int64_t nTimeFlush = 0

static

Definition at line 2559 of file validation.cpp.

◆ nTimeForks

int64_t nTimeForks = 0

static

Definition at line 1911 of file validation.cpp.

◆ nTimeIndex

int64_t nTimeIndex = 0

static

Definition at line 1914 of file validation.cpp.

◆ nTimePostConnect

int64_t nTimePostConnect = 0

static

Definition at line 2561 of file validation.cpp.

◆ nTimeReadFromDisk

int64_t nTimeReadFromDisk = 0

static

Definition at line 2557 of file validation.cpp.

◆ nTimeTotal

int64_t nTimeTotal = 0

static

Definition at line 1915 of file validation.cpp.

◆ nTimeVerify

int64_t nTimeVerify = 0

static

Definition at line 1912 of file validation.cpp.

◆ pindexBestHeader

CBlockIndex* pindexBestHeader = nullptr

Best header we've seen so far (used for getheaders queries' starting points).

Definition at line 140 of file validation.cpp.

◆ scriptcheckqueue

CCheckQueue<CScriptCheck> scriptcheckqueue(128)

static

Classes

Macros

Functions

Variables

Macro Definition Documentation

◆ MICRO

◆ MILLI

Function Documentation

◆ AbortNode()

◆ AcceptToMemoryPool()

◆ AlertNotify()

◆ AppendWarning()

◆ ApplyTxInUndo()

◆ assert()

◆ AssertLockHeld()

◆ CheckBlock()

◆ CheckBlockHeader()

◆ CheckFinalTx()

◆ CheckInputScripts() [1/2]

◆ CheckInputScripts() [2/2]

◆ CheckInputsFromMempoolAndCache()

◆ CheckSequenceLocks()

◆ ContextualCheckBlock()

◆ ContextualCheckBlockHeader()

◆ DoWarning()

◆ DumpMempool()

◆ ExpectedAssumeutxo()

◆ FlushSnapshotToDisk()

◆ for()

◆ GenerateCoinbaseCommitment()

◆ GetBlockScriptFlags()

◆ GetBlockSubsidy()

◆ GetSynchronizationState()

◆ GUARDED_BY()

◆ GuessVerificationProgress()

◆ InitScriptExecutionCache()

◆ IsCurrentForFeeEstimation()

◆ LimitMempoolSize()

◆ LimitValidationInterfaceQueue()

◆ LoadMempool()

◆ NotifyHeaderTip()

◆ ProcessNewPackage()

◆ PruneBlockFilesManual()

◆ StartScriptCheckWorkerThreads()

◆ StopScriptCheckWorkerThreads()

◆ TestBlockValidity()

◆ UnloadBlockIndex()

◆ UpdateCoins()

◆ UpdateTipLog()

◆ UpdateUncommittedBlockStructures()

Variable Documentation

◆ CHECKLEVEL_DOC

◆ cs

◆ cs_main

◆ DATABASE_FLUSH_INTERVAL

◆ DATABASE_WRITE_INTERVAL

◆ EXTRA_DESCENDANT_TX_SIZE_LIMIT

◆ fCheckBlockIndex

◆ fCheckpointsEnabled

◆ fRequireStandard

◆ g_best_block

◆ g_best_block_cv

◆ g_best_block_mutex

◆ g_parallel_script_checks

◆ g_scriptExecutionCache

◆ g_scriptExecutionCacheHasher

◆ hashAssumeValid

◆ MAX_DISCONNECTED_TX_POOL_SIZE

◆ MAX_FEE_ESTIMATION_TIP_AGE

◆ MEMPOOL_DUMP_VERSION

◆ minRelayTxFee

◆ nBlocksTotal

◆ nMaxTipAge

◆ nMinimumChainWork

◆ nTimeChainState

◆ nTimeCheck

◆ nTimeConnect

◆ nTimeConnectTotal

◆ nTimeFlush

◆ nTimeForks