diff options
Diffstat (limited to 'src/policy/rbf.h')
| -rw-r--r-- | src/policy/rbf.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/policy/rbf.h b/src/policy/rbf.h index e078070c1c..a67e9058df 100644 --- a/src/policy/rbf.h +++ b/src/policy/rbf.h @@ -7,6 +7,10 @@ #include <txmempool.h> +/** Maximum number of transactions that can be replaced by BIP125 RBF (Rule #5). This includes all + * mempool conflicts and their descendants. */ +static constexpr uint32_t MAX_BIP125_REPLACEMENT_CANDIDATES{100}; + /** The rbf state of unconfirmed transactions */ enum class RBFTransactionState { /** Unconfirmed tx that does not signal rbf and is not in the mempool */ @@ -31,4 +35,19 @@ enum class RBFTransactionState { RBFTransactionState IsRBFOptIn(const CTransaction& tx, const CTxMemPool& pool) EXCLUSIVE_LOCKS_REQUIRED(pool.cs); RBFTransactionState IsRBFOptInEmptyMempool(const CTransaction& tx); +/** Get all descendants of setIterConflicting. Also enforce BIP125 Rule #5, "The number of original + * transactions to be replaced and their descendant transactions which will be evicted from the + * mempool must not exceed a total of 100 transactions." Quit as early as possible. There cannot be + * more than MAX_BIP125_REPLACEMENT_CANDIDATES potential entries. + * @param[in] setIterConflicting The set of iterators to mempool entries. + * @param[out] err_string Used to return errors, if any. + * @param[out] allConflicting Populated with all the mempool entries that would be replaced, + * which includes descendants of setIterConflicting. Not cleared at + * the start; any existing mempool entries will remain in the set. + * @returns false if Rule 5 is broken. + */ +bool GetEntriesForConflicts(const CTransaction& tx, CTxMemPool& m_pool, + const CTxMemPool::setEntries& setIterConflicting, + CTxMemPool::setEntries& allConflicting, + std::string& err_string) EXCLUSIVE_LOCKS_REQUIRED(m_pool.cs); #endif // BITCOIN_POLICY_RBF_H |