diff options
Diffstat (limited to 'src/blockchain_db')
| -rw-r--r-- | src/blockchain_db/lmdb/db_lmdb.cpp | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp index ee49e1827..495f93bdc 100644 --- a/src/blockchain_db/lmdb/db_lmdb.cpp +++ b/src/blockchain_db/lmdb/db_lmdb.cpp @@ -149,6 +149,20 @@ inline void lmdb_db_open(MDB_txn* txn, const char* name, int flags, MDB_dbi& dbi namespace cryptonote { +// If m_batch_active is set, a batch transaction exists beyond this class, such +// as a batch import with verification enabled, or possibly (later) a batch +// network sync. +// +// For some of the lookup methods, such as get_block_timestamp(), tx_exists(), +// and get_tx(), when m_batch_active is set, the lookup uses the batch +// transaction. This isn't only because the transaction is available, but it's +// necessary so that lookups include the database updates only present in the +// current batch write. +// +// A regular network sync without batch writes is expected to open a new read +// transaction, as those lookups are part of the validation done prior to the +// write for block and tx data, so no write transaction is open at the time. + void BlockchainLMDB::add_block( const block& blk , const size_t& block_size , const difficulty_type& cumulative_difficulty @@ -1260,14 +1274,6 @@ uint64_t BlockchainLMDB::get_tx_block_height(const crypto::hash& h) const LOG_PRINT_L3("BlockchainLMDB::" << __func__); check_open(); - // If m_batch_active is set, a batch transaction exists beyond this class, - // such as a batch import with verification enabled, or possibly (later) a - // batch network sync. - // - // A regular network sync without batching would be expected to open a new - // read transaction here, as validation is done prior to the write for block - // and tx data. - txn_safe txn; txn_safe* txn_ptr = &txn; if (m_batch_active) |