diff options
| -rw-r--r-- | src/cryptonote_core/blockchain.cpp | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp index 933914363..9d89c6280 100644 --- a/src/cryptonote_core/blockchain.cpp +++ b/src/cryptonote_core/blockchain.cpp @@ -139,14 +139,20 @@ Blockchain::Blockchain(tx_memory_pool& tx_pool) : bool Blockchain::have_tx(const crypto::hash &id) const { LOG_PRINT_L3("Blockchain::" << __func__); - CRITICAL_REGION_LOCAL(m_blockchain_lock); + // WARNING: this function does not take m_blockchain_lock, and thus should only call read only + // m_db functions which do not depend on one another (ie, no getheight + gethash(height-1), as + // well as not accessing class members, even read only (ie, m_invalid_blocks). The caller must + // lock if it is otherwise needed. return m_db->tx_exists(id); } //------------------------------------------------------------------ bool Blockchain::have_tx_keyimg_as_spent(const crypto::key_image &key_im) const { LOG_PRINT_L3("Blockchain::" << __func__); - CRITICAL_REGION_LOCAL(m_blockchain_lock); + // WARNING: this function does not take m_blockchain_lock, and thus should only call read only + // m_db functions which do not depend on one another (ie, no getheight + gethash(height-1), as + // well as not accessing class members, even read only (ie, m_invalid_blocks). The caller must + // lock if it is otherwise needed. return m_db->has_key_image(key_im); } //------------------------------------------------------------------ @@ -287,7 +293,10 @@ bool Blockchain::scan_outputkeys_for_indexes(size_t tx_version, const txin_to_ke uint64_t Blockchain::get_current_blockchain_height() const { LOG_PRINT_L3("Blockchain::" << __func__); - CRITICAL_REGION_LOCAL(m_blockchain_lock); + // WARNING: this function does not take m_blockchain_lock, and thus should only call read only + // m_db functions which do not depend on one another (ie, no getheight + gethash(height-1), as + // well as not accessing class members, even read only (ie, m_invalid_blocks). The caller must + // lock if it is otherwise needed. return m_db->height(); } //------------------------------------------------------------------ @@ -571,7 +580,10 @@ crypto::hash Blockchain::get_tail_id(uint64_t& height) const crypto::hash Blockchain::get_tail_id() const { LOG_PRINT_L3("Blockchain::" << __func__); - CRITICAL_REGION_LOCAL(m_blockchain_lock); + // WARNING: this function does not take m_blockchain_lock, and thus should only call read only + // m_db functions which do not depend on one another (ie, no getheight + gethash(height-1), as + // well as not accessing class members, even read only (ie, m_invalid_blocks). The caller must + // lock if it is otherwise needed. return m_db->top_block_hash(); } //------------------------------------------------------------------ @@ -633,7 +645,10 @@ bool Blockchain::get_short_chain_history(std::list<crypto::hash>& ids) const crypto::hash Blockchain::get_block_id_by_height(uint64_t height) const { LOG_PRINT_L3("Blockchain::" << __func__); - CRITICAL_REGION_LOCAL(m_blockchain_lock); + // WARNING: this function does not take m_blockchain_lock, and thus should only call read only + // m_db functions which do not depend on one another (ie, no getheight + gethash(height-1), as + // well as not accessing class members, even read only (ie, m_invalid_blocks). The caller must + // lock if it is otherwise needed. try { return m_db->get_block_hash_from_height(height); @@ -1928,7 +1943,10 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc uint64_t Blockchain::block_difficulty(uint64_t i) const { LOG_PRINT_L3("Blockchain::" << __func__); - CRITICAL_REGION_LOCAL(m_blockchain_lock); + // WARNING: this function does not take m_blockchain_lock, and thus should only call read only + // m_db functions which do not depend on one another (ie, no getheight + gethash(height-1), as + // well as not accessing class members, even read only (ie, m_invalid_blocks). The caller must + // lock if it is otherwise needed. try { return m_db->get_block_difficulty(i); @@ -2209,7 +2227,10 @@ bool Blockchain::handle_block_to_main_chain(const block& bl, block_verification_ size_t Blockchain::get_total_transactions() const { LOG_PRINT_L3("Blockchain::" << __func__); - CRITICAL_REGION_LOCAL(m_blockchain_lock); + // WARNING: this function does not take m_blockchain_lock, and thus should only call read only + // m_db functions which do not depend on one another (ie, no getheight + gethash(height-1), as + // well as not accessing class members, even read only (ie, m_invalid_blocks). The caller must + // lock if it is otherwise needed. return m_db->get_tx_count(); } //------------------------------------------------------------------ |