Bitcoin ABC
0.26.3
P2P Digital Currency
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CCoinsView that brings transactions from a mempool into view. More...
#include <txmempool.h>
Public Member Functions | |
CCoinsViewMemPool (CCoinsView *baseIn, const CTxMemPool &mempoolIn) | |
bool | GetCoin (const COutPoint &outpoint, Coin &coin) const override |
Retrieve the Coin (unspent transaction output) for a given outpoint. More... | |
void | PackageAddTransaction (const CTransactionRef &tx) |
Add the coins created by this transaction. More... | |
Public Member Functions inherited from CCoinsViewBacked | |
CCoinsViewBacked (CCoinsView *viewIn) | |
bool | HaveCoin (const COutPoint &outpoint) const override |
Just check whether a given outpoint is unspent. More... | |
BlockHash | GetBestBlock () const override |
Retrieve the block hash whose state this CCoinsView currently represents. More... | |
std::vector< BlockHash > | GetHeadBlocks () const override |
Retrieve the range of blocks that may have been only partially written. More... | |
void | SetBackend (CCoinsView &viewIn) |
bool | BatchWrite (CCoinsMap &mapCoins, const BlockHash &hashBlock) override |
Do a bulk modification (multiple Coin changes + BestBlock change). More... | |
CCoinsViewCursor * | Cursor () const override |
Get a cursor to iterate over the whole state. More... | |
size_t | EstimateSize () const override |
Estimate database size (0 if not implemented) More... | |
Public Member Functions inherited from CCoinsView | |
virtual | ~CCoinsView () |
As we use CCoinsViews polymorphically, have a virtual destructor. More... | |
Protected Attributes | |
const CTxMemPool & | mempool |
Protected Attributes inherited from CCoinsViewBacked | |
CCoinsView * | base |
Private Attributes | |
std::unordered_map< COutPoint, Coin, SaltedOutpointHasher > | m_temp_added |
Coins made available by transactions being validated. More... | |
CCoinsView that brings transactions from a mempool into view.
It does not check for spendings by memory pool transactions. Instead, it provides access to all Coins which are either unspent in the base CCoinsView, are outputs from any mempool transaction, or are tracked temporarily to allow transaction dependencies in package validation. This allows transaction replacement to work as expected, as you want to have all inputs "available" to check signatures, and any cycles in the dependency graph are checked directly in AcceptToMemoryPool. It also allows you to sign a double-spend directly in signrawtransactionwithkey and signrawtransactionwithwallet, as long as the conflicting transaction is not yet confirmed.
Definition at line 589 of file txmempool.h.
CCoinsViewMemPool::CCoinsViewMemPool | ( | CCoinsView * | baseIn, |
const CTxMemPool & | mempoolIn | ||
) |
Definition at line 588 of file txmempool.cpp.
Retrieve the Coin (unspent transaction output) for a given outpoint.
Returns true only when an unspent coin was found, which is returned in coin. When false is returned, coin's value is unspecified.
Reimplemented from CCoinsViewBacked.
Definition at line 592 of file txmempool.cpp.
void CCoinsViewMemPool::PackageAddTransaction | ( | const CTransactionRef & | tx | ) |
Add the coins created by this transaction.
These coins are only temporarily stored in m_temp_added and cannot be flushed to the back end. Only used for package validation.
Definition at line 615 of file txmempool.cpp.
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private |
Coins made available by transactions being validated.
Tracking these allows for package validation, since we can access transaction outputs without submitting them to mempool.
Definition at line 595 of file txmempool.h.
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protected |
Definition at line 598 of file txmempool.h.