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Bitcoin Core
22.99.0
P2P Digital Currency
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#include <arith_uint256.h>
#include <attributes.h>
#include <chain.h>
#include <consensus/amount.h>
#include <fs.h>
#include <node/blockstorage.h>
#include <policy/feerate.h>
#include <policy/packages.h>
#include <script/script_error.h>
#include <sync.h>
#include <txdb.h>
#include <txmempool.h>
#include <uint256.h>
#include <util/check.h>
#include <util/hasher.h>
#include <util/translation.h>
#include <atomic>
#include <map>
#include <memory>
#include <optional>
#include <set>
#include <stdint.h>
#include <string>
#include <thread>
#include <utility>
#include <vector>
Go to the source code of this file.
Classes | |
struct | MempoolAcceptResult |
Validation result for a single transaction mempool acceptance. More... | |
struct | PackageMempoolAcceptResult |
Validation result for package mempool acceptance. More... | |
class | CScriptCheck |
Closure representing one script verification Note that this stores references to the spending transaction. More... | |
class | CVerifyDB |
RAII wrapper for VerifyDB: Verify consistency of the block and coin databases. More... | |
class | CoinsViews |
A convenience class for constructing the CCoinsView* hierarchy used to facilitate access to the UTXO set. More... | |
class | CChainState |
CChainState stores and provides an API to update our local knowledge of the current best chain. More... | |
class | ChainstateManager |
Provides an interface for creating and interacting with one or two chainstates: an IBD chainstate generated by downloading blocks, and an optional snapshot chainstate loaded from a UTXO snapshot. More... | |
Namespaces | |
node | |
Typedefs | |
using | FopenFn = std::function< FILE *(const fs::path &, const char *)> |
Enumerations | |
enum | SynchronizationState { SynchronizationState::INIT_REINDEX, SynchronizationState::INIT_DOWNLOAD, SynchronizationState::POST_INIT } |
Current sync state passed to tip changed callbacks. More... | |
enum | DisconnectResult { DISCONNECT_OK, DISCONNECT_UNCLEAN, DISCONNECT_FAILED } |
enum | FlushStateMode { FlushStateMode::NONE, FlushStateMode::IF_NEEDED, FlushStateMode::PERIODIC, FlushStateMode::ALWAYS } |
enum | CoinsCacheSizeState { CoinsCacheSizeState::CRITICAL = 2, CoinsCacheSizeState::LARGE = 1, CoinsCacheSizeState::OK = 0 } |
Functions | |
void | UnloadBlockIndex (CTxMemPool *mempool, ChainstateManager &chainman) |
Unload database information. 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... | |
CAmount | GetBlockSubsidy (int nHeight, const Consensus::Params &consensusParams) |
bool | AbortNode (BlockValidationState &state, const std::string &strMessage, const bilingual_str &userMessage=bilingual_str{}) |
double | GuessVerificationProgress (const ChainTxData &data, const CBlockIndex *pindex) |
Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip). More... | |
void | PruneBlockFilesManual (CChainState &active_chainstate, int nManualPruneHeight) |
Prune block files up to a given height. More... | |
MempoolAcceptResult | AcceptToMemoryPool (CChainState &active_chainstate, const CTransactionRef &tx, int64_t accept_time, bool bypass_limits, bool test_accept) EXCLUSIVE_LOCKS_REQUIRED(cs_main) |
Try to add a transaction to the mempool. More... | |
PackageMempoolAcceptResult | ProcessNewPackage (CChainState &active_chainstate, CTxMemPool &pool, const Package &txns, bool test_accept) EXCLUSIVE_LOCKS_REQUIRED(cs_main) |
Validate (and maybe submit) a package to the mempool. More... | |
bool | CheckFinalTx (const CBlockIndex *active_chain_tip, const CTransaction &tx, int flags=-1) EXCLUSIVE_LOCKS_REQUIRED(cs_main) |
Transaction validation functions. More... | |
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. More... | |
void | InitScriptExecutionCache () |
Initializes the script-execution cache. More... | |
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. More... | |
bool | TestBlockValidity (BlockValidationState &state, const CChainParams &chainparams, CChainState &chainstate, const CBlock &block, CBlockIndex *pindexPrev, bool fCheckPOW=true, bool fCheckMerkleRoot=true) EXCLUSIVE_LOCKS_REQUIRED(cs_main) |
Check a block is completely valid from start to finish (only works on top of our current best block) 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... | |
bool | DumpMempool (const CTxMemPool &pool, FopenFn mockable_fopen_function=fsbridge::fopen, bool skip_file_commit=false) |
Dump the mempool to disk. More... | |
bool | LoadMempool (CTxMemPool &pool, CChainState &active_chainstate, FopenFn mockable_fopen_function=fsbridge::fopen) |
Load the mempool from disk. More... | |
const AssumeutxoData * | ExpectedAssumeutxo (const int height, const CChainParams ¶ms) |
Return the expected assumeutxo value for a given height, if one exists. More... | |
Variables | |
static const unsigned int | DEFAULT_MIN_RELAY_TX_FEE = 1000 |
Default for -minrelaytxfee, minimum relay fee for transactions. More... | |
static const unsigned int | DEFAULT_ANCESTOR_LIMIT = 25 |
Default for -limitancestorcount, max number of in-mempool ancestors. More... | |
static const unsigned int | DEFAULT_ANCESTOR_SIZE_LIMIT = 101 |
Default for -limitancestorsize, maximum kilobytes of tx + all in-mempool ancestors. More... | |
static const unsigned int | DEFAULT_DESCENDANT_LIMIT = 25 |
Default for -limitdescendantcount, max number of in-mempool descendants. More... | |
static const unsigned int | DEFAULT_DESCENDANT_SIZE_LIMIT = 101 |
Default for -limitdescendantsize, maximum kilobytes of in-mempool descendants. More... | |
static const unsigned int | DEFAULT_MEMPOOL_EXPIRY = 336 |
Default for -mempoolexpiry, expiration time for mempool transactions in hours. More... | |
static const int | MAX_SCRIPTCHECK_THREADS = 15 |
Maximum number of dedicated script-checking threads allowed. More... | |
static const int | DEFAULT_SCRIPTCHECK_THREADS = 0 |
-par default (number of script-checking threads, 0 = auto) More... | |
static const int64_t | DEFAULT_MAX_TIP_AGE = 24 * 60 * 60 |
static const bool | DEFAULT_CHECKPOINTS_ENABLED = true |
static const bool | DEFAULT_TXINDEX = false |
static constexpr bool | DEFAULT_COINSTATSINDEX {false} |
static const char *const | DEFAULT_BLOCKFILTERINDEX = "0" |
static const bool | DEFAULT_PERSIST_MEMPOOL = true |
Default for -persistmempool. More... | |
static const int | DEFAULT_STOPATHEIGHT = 0 |
Default for -stopatheight. More... | |
static const unsigned int | MIN_BLOCKS_TO_KEEP = 288 |
Block files containing a block-height within MIN_BLOCKS_TO_KEEP of ActiveChain().Tip() will not be pruned. More... | |
static const signed int | DEFAULT_CHECKBLOCKS = 6 |
static const unsigned int | DEFAULT_CHECKLEVEL = 3 |
static const uint64_t | MIN_DISK_SPACE_FOR_BLOCK_FILES = 550 * 1024 * 1024 |
RecursiveMutex | cs_main |
Mutex to guard access to validation specific variables, such as reading or changing the chainstate. 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 |
Whether there are dedicated script-checking threads running. More... | |
bool | fRequireStandard |
bool | fCheckBlockIndex |
bool | fCheckpointsEnabled |
CFeeRate | minRelayTxFee |
A fee rate smaller than this is considered zero fee (for relaying, mining and transaction creation) More... | |
int64_t | nMaxTipAge |
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... | |
CBlockIndex * | pindexBestHeader |
Best header we've seen so far (used for getheaders queries' starting points). More... | |
const std::vector< std::string > | CHECKLEVEL_DOC |
Documentation for argument 'checklevel'. More... | |
Definition at line 1008 of file validation.h.
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Enumerator | |
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CRITICAL | The coins cache is in immediate need of a flush. |
LARGE | The cache is at >= 90% capacity. |
OK |
Definition at line 436 of file validation.h.
enum DisconnectResult |
Enumerator | |
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DISCONNECT_OK | |
DISCONNECT_UNCLEAN | |
DISCONNECT_FAILED |
Definition at line 384 of file validation.h.
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Enumerator | |
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NONE | |
IF_NEEDED | |
PERIODIC | |
ALWAYS |
Definition at line 394 of file validation.h.
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Current sync state passed to tip changed callbacks.
Enumerator | |
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INIT_REINDEX | |
INIT_DOWNLOAD | |
POST_INIT |
Definition at line 105 of file validation.h.
bool AbortNode | ( | BlockValidationState & | state, |
const std::string & | strMessage, | ||
const bilingual_str & | userMessage = bilingual_str{} |
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Definition at line 1722 of file validation.cpp.
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()
[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. |
Definition at line 1355 of file validation.cpp.
bool CheckBlock | ( | const CBlock & | block, |
BlockValidationState & | state, | ||
const Consensus::Params & | consensusParams, | ||
bool | fCheckPOW = true , |
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bool | fCheckMerkleRoot = true |
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Functions for validating blocks and updating the block tree.
Context-independent validity checks
Definition at line 3240 of file validation.cpp.
bool CheckFinalTx | ( | const CBlockIndex * | active_chain_tip, |
const CTransaction & | tx, | ||
int | flags = -1 |
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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.
bool CheckSequenceLocks | ( | CBlockIndex * | tip, |
const CCoinsView & | coins_view, | ||
const CTransaction & | tx, | ||
int | flags, | ||
LockPoints * | lp = nullptr , |
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bool | useExistingLockPoints = false |
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Check if transaction will be BIP68 final in the next block to be created on top of tip.
[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.
bool DumpMempool | ( | const CTxMemPool & | pool, |
FopenFn | mockable_fopen_function = fsbridge::fopen , |
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bool | skip_file_commit = false |
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Dump the mempool to disk.
Definition at line 4593 of file validation.cpp.
const AssumeutxoData* ExpectedAssumeutxo | ( | const int | height, |
const CChainParams & | params | ||
) |
Return the expected assumeutxo value for a given height, if one exists.
[in] | height | Get the assumeutxo value for this height. |
Definition at line 4723 of file validation.cpp.
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.
CAmount GetBlockSubsidy | ( | int | nHeight, |
const Consensus::Params & | consensusParams | ||
) |
double GuessVerificationProgress | ( | const ChainTxData & | data, |
const CBlockIndex * | pindex | ||
) |
Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip).
Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip).
Definition at line 4656 of file validation.cpp.
void InitScriptExecutionCache | ( | ) |
Initializes the script-execution cache.
Definition at line 1599 of file validation.cpp.
bool LoadMempool | ( | CTxMemPool & | pool, |
CChainState & | active_chainstate, | ||
FopenFn | mockable_fopen_function = fsbridge::fopen |
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) |
Load the mempool from disk.
Definition at line 4509 of file validation.cpp.
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.
[in] | test_accept | When true, run validation checks but don't submit to mempool. |
Definition at line 1382 of file validation.cpp.
void PruneBlockFilesManual | ( | CChainState & | active_chainstate, |
int | nManualPruneHeight | ||
) |
Prune block files up to a given height.
Definition at line 3780 of file validation.cpp.
void StartScriptCheckWorkerThreads | ( | int | threads_num | ) |
Run instances of script checking worker threads.
Definition at line 1826 of file validation.cpp.
void StopScriptCheckWorkerThreads | ( | ) |
Stop all of the script checking worker threads.
Definition at line 1831 of file validation.cpp.
bool TestBlockValidity | ( | BlockValidationState & | state, |
const CChainParams & | chainparams, | ||
CChainState & | chainstate, | ||
const CBlock & | block, | ||
CBlockIndex * | pindexPrev, | ||
bool | fCheckPOW = true , |
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bool | fCheckMerkleRoot = true |
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) |
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.
void UnloadBlockIndex | ( | CTxMemPool * | mempool, |
ChainstateManager & | chainman | ||
) |
Unload database information.
Definition at line 4063 of file validation.cpp.
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.
const std::vector<std::string> CHECKLEVEL_DOC |
Documentation for argument 'checklevel'.
Definition at line 101 of file validation.cpp.
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.
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Default for -limitancestorcount, max number of in-mempool ancestors.
Definition at line 58 of file validation.h.
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Default for -limitancestorsize, maximum kilobytes of tx + all in-mempool ancestors.
Definition at line 60 of file validation.h.
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Definition at line 85 of file validation.h.
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Definition at line 92 of file validation.h.
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Definition at line 93 of file validation.h.
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Definition at line 82 of file validation.h.
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Definition at line 84 of file validation.h.
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Default for -limitdescendantcount, max number of in-mempool descendants.
Definition at line 62 of file validation.h.
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Default for -limitdescendantsize, maximum kilobytes of in-mempool descendants.
Definition at line 64 of file validation.h.
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Definition at line 81 of file validation.h.
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Default for -mempoolexpiry, expiration time for mempool transactions in hours.
Definition at line 76 of file validation.h.
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Default for -minrelaytxfee, minimum relay fee for transactions.
Definition at line 56 of file validation.h.
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Default for -persistmempool.
Definition at line 87 of file validation.h.
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-par default (number of script-checking threads, 0 = auto)
Definition at line 80 of file validation.h.
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Default for -stopatheight.
Definition at line 89 of file validation.h.
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Definition at line 83 of file validation.h.
bool fCheckBlockIndex |
Definition at line 146 of file validation.cpp.
bool fCheckpointsEnabled |
Definition at line 147 of file validation.cpp.
bool fRequireStandard |
Definition at line 145 of file validation.cpp.
uint256 g_best_block |
Used to notify getblocktemplate RPC of new tips.
Definition at line 143 of file validation.cpp.
std::condition_variable g_best_block_cv |
Definition at line 142 of file validation.cpp.
Mutex g_best_block_mutex |
Definition at line 141 of file validation.cpp.
bool g_parallel_script_checks |
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.
uint256 hashAssumeValid |
Block hash whose ancestors we will assume to have valid scripts without checking them.
Definition at line 150 of file validation.cpp.
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Maximum number of dedicated script-checking threads allowed.
Definition at line 78 of file validation.h.
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Block files containing a block-height within MIN_BLOCKS_TO_KEEP of ActiveChain().Tip() will not be pruned.
Definition at line 91 of file validation.h.
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Definition at line 102 of file validation.h.
CFeeRate minRelayTxFee |
A fee rate smaller than this is considered zero fee (for relaying, mining and transaction creation)
Definition at line 153 of file validation.cpp.
int64_t nMaxTipAge |
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.
arith_uint256 nMinimumChainWork |
Minimum work we will assume exists on some valid chain.
Definition at line 151 of file validation.cpp.
CBlockIndex* pindexBestHeader |
Best header we've seen so far (used for getheaders queries' starting points).
Definition at line 140 of file validation.cpp.