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read txn/cursor stuff

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Could wrap more later.
This commit is contained in:
Howard Chu 2016-02-18 12:09:57 +00:00
parent 86a7f2b1e7
commit 8cc7a36f0b
8 changed files with 339 additions and 166 deletions
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9
src/cryptonote_core/blockchain.cpp
View file

@ -1403,6 +1403,7 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
{
LOG_PRINT_L3("Blockchain::" << __func__);
CRITICAL_REGION_LOCAL(m_blockchain_lock);
m_db->block_txn_start(true);
rsp.current_blockchain_height = get_current_blockchain_height();
std::list<block> blocks;
get_blocks(arg.blocks, blocks, rsp.missed_ids);
@ -1424,6 +1425,7 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
// as done below if any standalone transactions were requested
// and missed.
rsp.missed_ids.splice(rsp.missed_ids.end(), missed_tx_ids);
m_db->block_txn_stop();
return false;
}
@ -1442,6 +1444,7 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
for (const auto& tx: txs)
rsp.txs.push_back(t_serializable_object_to_blob(tx));
m_db->block_txn_stop();
return true;
}
//------------------------------------------------------------------
@ -1585,12 +1588,14 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
return false;
}
m_db->block_txn_start(true);
// make sure that the last block in the request's block list matches
// the genesis block
auto gen_hash = m_db->get_block_hash_from_height(0);
if(qblock_ids.back() != gen_hash)
{
LOG_PRINT_L1("Client sent wrong NOTIFY_REQUEST_CHAIN: genesis block missmatch: " << std::endl << "id: " << qblock_ids.back() << ", " << std::endl << "expected: " << gen_hash << "," << std::endl << " dropping connection");
m_db->block_txn_abort();
return false;
}
@ -1612,9 +1617,11 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
catch (const std::exception& e)
{
LOG_PRINT_L1("Non-critical error trying to find block by hash in BlockchainDB, hash: " << *bl_it);
m_db->block_txn_abort();
return false;
}
}
m_db->block_txn_stop();
// this should be impossible, as we checked that we share the genesis block,
// but just in case...
@ -2777,6 +2784,7 @@ void Blockchain::check_against_checkpoints(const checkpoints& points, bool enfor
{
const auto& pts = points.get_points();
m_db->batch_start();
for (const auto& pt : pts)
{
// if the checkpoint is for a block we don't have yet, move on
@ -2800,6 +2808,7 @@ void Blockchain::check_against_checkpoints(const checkpoints& points, bool enfor
}
}
}
m_db->batch_stop();
}
//------------------------------------------------------------------
// returns false if any of the checkpoints loading returns false.

6
src/cryptonote_core/hardfork.cpp
View file

@ -254,8 +254,11 @@ bool HardFork::reorganize_from_chain_height(uint64_t height)
bool HardFork::rescan_from_block_height(uint64_t height)
{
CRITICAL_REGION_LOCAL(lock);
if (height >= db.height())
db.block_txn_start(true);
if (height >= db.height()) {
db.block_txn_stop();
return false;
}
versions.clear();
@ -273,6 +276,7 @@ bool HardFork::rescan_from_block_height(uint64_t height)
current_fork_index = 0;
while (current_fork_index + 1 < heights.size() && heights[current_fork_index].version != lastv)
++current_fork_index;
db.block_txn_stop();
return true;
}