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Use DUPFIXED for output_keys 

Saves another 90MB on 200000 block import.
Had to bring back compare_uint64 for this, but it's safe since
this table is always 64-bit aligned.
This commit is contained in:
Howard Chu 2016-03-06 09:18:51 +00:00
parent 8e9d8e3364
commit 7c5abdc3a3
1 changed files with 37 additions and 23 deletions
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60
src/blockchain_db/lmdb/db_lmdb.cpp
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@ -108,6 +108,13 @@ private:
std::unique_ptr<char[]> data;
};
int compare_uint64(const MDB_val *a, const MDB_val *b)
{
const uint64_t va = *(const uint64_t *)a->mv_data;
const uint64_t vb = *(const uint64_t *)b->mv_data;
return (va < vb) ? -1 : va > vb;
}
int compare_uint8(const MDB_val *a, const MDB_val *b)
{
const uint8_t va = *(const uint8_t*)a->mv_data;
@ -215,6 +222,11 @@ typedef struct txindex {
tx_data_t data;
} txindex;
typedef struct outkey {
uint64_t num_outputs;
output_data_t data;
} outkey;
std::atomic<uint64_t> mdb_txn_safe::num_active_txns{0};
std::atomic_flag mdb_txn_safe::creation_gate = ATOMIC_FLAG_INIT;
@ -741,14 +753,14 @@ void BlockchainLMDB::add_output(const crypto::hash& tx_hash,
if (tx_output.target.type() == typeid(txout_to_key))
{
output_data_t od;
od.pubkey = boost::get < txout_to_key > (tx_output.target).key;
od.unlock_time = unlock_time;
od.height = m_height;
outkey ok;
ok.num_outputs = m_num_outputs;
ok.data.pubkey = boost::get < txout_to_key > (tx_output.target).key;
ok.data.unlock_time = unlock_time;
ok.data.height = m_height;
MDB_val_copy<output_data_t> data(od);
//MDB_val_copy<crypto::public_key> val_pubkey(boost::get<txout_to_key>(tx_output.target).key);
if (mdb_cursor_put(m_cur_output_keys, &k, &data, MDB_APPEND))
MDB_val data = {sizeof(ok), (void *)&ok};
if (mdb_cursor_put(m_cur_output_keys, (MDB_val *)&zerokval, &data, MDB_APPENDDUP))
throw0(DB_ERROR("Failed to add output pubkey to db transaction"));
}
else
@ -848,7 +860,7 @@ void BlockchainLMDB::remove_output(const uint64_t& out_index, const uint64_t amo
throw1(DB_ERROR("Error adding removal of output tx hash to db transaction"));
}
result = mdb_del(*m_write_txn, m_output_keys, &k, NULL);
result = mdb_del(*m_write_txn, m_output_keys, (MDB_val *)&zerokval, &k);
if (result == MDB_NOTFOUND)
{
LOG_PRINT_L0("Unexpected: global output index not found in m_output_keys");
@ -1088,18 +1100,18 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
lmdb_db_open(txn, LMDB_BLOCKS, MDB_INTEGERKEY | MDB_CREATE, m_blocks, "Failed to open db handle for m_blocks");
lmdb_db_open(txn, LMDB_BLOCK_INFO, MDB_INTEGERKEY | MDB_CREATE, m_block_info, "Failed to open db handle for m_block_info");
lmdb_db_open(txn, LMDB_BLOCK_HEIGHTS, MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_heights, "Failed to open db handle for m_block_heights");
lmdb_db_open(txn, LMDB_BLOCK_HEIGHTS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_heights, "Failed to open db handle for m_block_heights");
lmdb_db_open(txn, LMDB_TXS, MDB_INTEGERKEY | MDB_CREATE, m_txs, "Failed to open db handle for m_txs");
lmdb_db_open(txn, LMDB_TX_INDICES, MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_tx_indices, "Failed to open db handle for m_tx_indices");
lmdb_db_open(txn, LMDB_TX_INDICES, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_tx_indices, "Failed to open db handle for m_tx_indices");
lmdb_db_open(txn, LMDB_TX_OUTPUTS, MDB_INTEGERKEY | MDB_CREATE, m_tx_outputs, "Failed to open db handle for m_tx_outputs");
lmdb_db_open(txn, LMDB_OUTPUT_TXS, MDB_INTEGERKEY | MDB_CREATE, m_output_txs, "Failed to open db handle for m_output_txs");
lmdb_db_open(txn, LMDB_OUTPUT_INDICES, MDB_INTEGERKEY | MDB_CREATE, m_output_indices, "Failed to open db handle for m_output_indices");
lmdb_db_open(txn, LMDB_OUTPUT_AMOUNTS, MDB_INTEGERKEY | MDB_INTEGERDUP | MDB_DUPSORT | MDB_DUPFIXED | MDB_CREATE, m_output_amounts, "Failed to open db handle for m_output_amounts");
lmdb_db_open(txn, LMDB_OUTPUT_KEYS, MDB_INTEGERKEY | MDB_CREATE, m_output_keys, "Failed to open db handle for m_output_keys");
lmdb_db_open(txn, LMDB_OUTPUT_KEYS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_output_keys, "Failed to open db handle for m_output_keys");
lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for m_spent_keys");
lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for m_spent_keys");
lmdb_db_open(txn, LMDB_HF_STARTING_HEIGHTS, MDB_CREATE, m_hf_starting_heights, "Failed to open db handle for m_hf_starting_heights");
lmdb_db_open(txn, LMDB_HF_VERSIONS, MDB_INTEGERKEY | MDB_CREATE, m_hf_versions, "Failed to open db handle for m_hf_versions");
@ -1109,6 +1121,7 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
mdb_set_dupsort(txn, m_spent_keys, compare_hash32);
mdb_set_dupsort(txn, m_block_heights, compare_hash32);
mdb_set_dupsort(txn, m_tx_indices, compare_hash32);
mdb_set_dupsort(txn, m_output_keys, compare_uint64);
mdb_set_compare(txn, m_hf_starting_heights, compare_uint8);
mdb_set_compare(txn, m_properties, compare_string);
@ -1138,9 +1151,8 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
// terminate.
if(m_height > 0)
{
MDB_val_copy<uint64_t> k(0);
MDB_val v;
auto get_result = mdb_get(txn, m_output_keys, &k, &v);
auto get_result = mdb_get(txn, m_output_keys, (MDB_val *)&zerokval, &v);
if(get_result != MDB_SUCCESS)
{
txn.abort();
@ -1149,7 +1161,7 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
}
// LOG_PRINT_L0("Output keys size: " << v.mv_size);
if(v.mv_size != sizeof(output_data_t))
if(v.mv_size != sizeof(outkey))
compatible = false;
}
@ -1898,14 +1910,15 @@ output_data_t BlockchainLMDB::get_output_key(const uint64_t &global_index) const
const mdb_txn_cursors *m_cursors = m_write_txn ? &m_wcursors : &m_tinfo->m_ti_rcursors;
RCURSOR(output_keys);
MDB_val_copy<uint64_t> k(global_index);
MDB_val v;
auto get_result = mdb_cursor_get(m_cur_output_keys, &k, &v, MDB_SET);
outkey ok = {global_index};
MDB_val v = {sizeof(ok), (void *)&ok};
auto get_result = mdb_cursor_get(m_cur_output_keys, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get output pubkey by global index, but key does not exist"));
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve an output pubkey from the db"));
output_data_t ret = *(const output_data_t *) v.mv_data;
outkey *okp = (outkey *)v.mv_data;
output_data_t ret = okp->data;
TXN_POSTFIX_RDONLY();
return ret;
}
@ -2684,16 +2697,17 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<ui
for (const uint64_t &index : global_indices)
{
MDB_val_copy<uint64_t> k(index);
MDB_val v;
outkey ok = {index};
MDB_val v = {sizeof(ok), (void *)&ok};
auto get_result = mdb_cursor_get(m_cur_output_keys, &k, &v, MDB_SET);
auto get_result = mdb_cursor_get(m_cur_output_keys, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get output pubkey by global index, but key does not exist"));
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve an output pubkey from the db"));
output_data_t data = *(const output_data_t *) v.mv_data;
outkey *okp = (outkey *)v.mv_data;
output_data_t data = okp->data;
outputs.push_back(data);
}