diff options
Diffstat (limited to 'src/blockchain_db')
| -rw-r--r-- | src/blockchain_db/blockchain_db.h | 8 | ||||
| -rw-r--r-- | src/blockchain_db/lmdb/db_lmdb.cpp | 15 |
2 files changed, 21 insertions, 2 deletions
diff --git a/src/blockchain_db/blockchain_db.h b/src/blockchain_db/blockchain_db.h index 5926f34a5..fb1c586ea 100644 --- a/src/blockchain_db/blockchain_db.h +++ b/src/blockchain_db/blockchain_db.h @@ -175,6 +175,14 @@ class DB_ERROR : public DB_EXCEPTION DB_ERROR(const char* s) : DB_EXCEPTION(s) { } }; +// For distinguishing errors trying to set up a DB txn from other errors +class DB_ERROR_TXN_START : public DB_EXCEPTION +{ + public: + DB_ERROR_TXN_START() : DB_EXCEPTION("DB Error in starting txn") { } + DB_ERROR_TXN_START(const char* s) : DB_EXCEPTION(s) { } +}; + class DB_OPEN_FAILURE : public DB_EXCEPTION { public: diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp index 7b7af23b9..0bee8aae9 100644 --- a/src/blockchain_db/lmdb/db_lmdb.cpp +++ b/src/blockchain_db/lmdb/db_lmdb.cpp @@ -2199,8 +2199,15 @@ void BlockchainLMDB::set_batch_transactions(bool batch_transactions) void BlockchainLMDB::block_txn_start() { LOG_PRINT_L3("BlockchainLMDB::" << __func__); + // Distinguish the exceptions here from exceptions that would be thrown while + // using the txn and committing it. + // + // If an exception is thrown in this setup, we don't want the caller to catch + // it and proceed as if there were an existing write txn, such as trying to + // call block_txn_abort(). It also indicates a serious issue which will + // probably be thrown up another layer. if (! m_batch_active && m_write_txn) - throw0(DB_ERROR((std::string("Attempted to start new write txn when write txn already exists in ")+__FUNCTION__).c_str())); + throw0(DB_ERROR_TXN_START((std::string("Attempted to start new write txn when write txn already exists in ")+__FUNCTION__).c_str())); if (! m_batch_active) { m_write_txn = new mdb_txn_safe(); @@ -2208,7 +2215,7 @@ void BlockchainLMDB::block_txn_start() { delete m_write_txn; m_write_txn = nullptr; - throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str())); + throw0(DB_ERROR_TXN_START(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str())); } } } @@ -2270,6 +2277,10 @@ uint64_t BlockchainLMDB::add_block(const block& blk, const size_t& block_size, c { BlockchainDB::add_block(blk, block_size, cumulative_difficulty, coins_generated, txs); } + catch (DB_ERROR_TXN_START& e) + { + throw; + } catch (...) { m_num_outputs = num_outputs; |