BlockchainLMDB: extract txn macros used during block add/remove
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@ -1265,6 +1265,32 @@ void BlockchainLMDB::unlock()
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auto_txn.commit(); \
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} while(0)
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// The below two macros are for DB access within block add/remove, whether
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// regular batch txn is in use or not. m_write_txn is used as a batch txn, even
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// if it's only within block add/remove.
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//
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// DB access functions that may be called both within block add/remove and
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// without should use these. If the function will be called ONLY within block
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// add/remove, m_write_txn alone may be used instead of these macros.
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#define TXN_BLOCK_PREFIX(flags); \
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mdb_txn_safe auto_txn; \
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mdb_txn_safe* txn_ptr = &auto_txn; \
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if (m_batch_active || m_write_txn) \
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txn_ptr = m_write_txn; \
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else \
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{ \
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if (auto mdb_res = mdb_txn_begin(m_env, NULL, flags, auto_txn)) \
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throw0(DB_ERROR(lmdb_error(std::string("Failed to create a transaction for the db in ")+__FUNCTION__+": ", mdb_res).c_str())); \
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} \
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#define TXN_BLOCK_POSTFIX_SUCCESS() \
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do { \
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if (! m_batch_active && ! m_write_txn) \
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auto_txn.commit(); \
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} while(0)
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bool BlockchainLMDB::block_exists(const crypto::hash& h) const
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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