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More outputs consolidation

Browse source 
Also bumped DB VERSION to 1
Another significant speedup and space savings:
Get rid of global_output_indices, remove indirection from output to keys

This is the change warptangent described on irc but never got to finish.
This commit is contained in:
Howard Chu 2016-03-27 22:43:16 +01:00
parent 7c5abdc3a3
commit 6225716f3c
3 changed files with 268 additions and 496 deletions
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2
external/db_drivers/liblmdb/mdb.c vendored
View file

@ -6771,8 +6771,8 @@ set1:
if (op == MDB_GET_BOTH || rc > 0)
return MDB_NOTFOUND;
rc = 0;
*data = olddata;
}
*data = olddata;
} else {
if (mc->mc_xcursor)

736
src/blockchain_db/lmdb/db_lmdb.cpp
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File diff suppressed because it is too large Load diff

26
src/blockchain_db/lmdb/db_lmdb.h
View file

@ -46,9 +46,7 @@ typedef struct mdb_txn_cursors
MDB_cursor *m_txc_block_info;
MDB_cursor *m_txc_output_txs;
MDB_cursor *m_txc_output_indices;
MDB_cursor *m_txc_output_amounts;
MDB_cursor *m_txc_output_keys;
MDB_cursor *m_txc_txs;
MDB_cursor *m_txc_tx_indices;
@ -63,9 +61,7 @@ typedef struct mdb_txn_cursors
#define m_cur_block_heights m_cursors->m_txc_block_heights
#define m_cur_block_info m_cursors->m_txc_block_info
#define m_cur_output_txs m_cursors->m_txc_output_txs
#define m_cur_output_indices m_cursors->m_txc_output_indices
#define m_cur_output_amounts m_cursors->m_txc_output_amounts
#define m_cur_output_keys m_cursors->m_txc_output_keys
#define m_cur_txs m_cursors->m_txc_txs
#define m_cur_tx_indices m_cursors->m_txc_tx_indices
#define m_cur_tx_outputs m_cursors->m_txc_tx_outputs
@ -79,9 +75,7 @@ typedef struct mdb_rflags
bool m_rf_block_heights;
bool m_rf_block_info;
bool m_rf_output_txs;
bool m_rf_output_indices;
bool m_rf_output_amounts;
bool m_rf_output_keys;
bool m_rf_txs;
bool m_rf_tx_indices;
bool m_rf_tx_outputs;
@ -100,7 +94,7 @@ typedef struct mdb_threadinfo
struct mdb_txn_safe
{
mdb_txn_safe();
mdb_txn_safe(const bool check=true);
~mdb_txn_safe();
void commit(std::string message = "");
@ -127,8 +121,10 @@ struct mdb_txn_safe
static void wait_no_active_txns();
static void allow_new_txns();
mdb_threadinfo* m_tinfo;
MDB_txn* m_txn;
bool m_batch_txn = false;
bool m_check;
static std::atomic<uint64_t> num_active_txns;
// could use a mutex here, but this should be sufficient.
@ -230,7 +226,6 @@ public:
virtual tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index);
virtual void get_output_tx_and_index(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<tx_out_index> &indices);
virtual void get_output_global_indices(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<uint64_t> &indices);
virtual void get_amount_and_global_output_indices(const uint64_t tx_index,
std::vector<uint64_t>& amount_output_indices,
@ -261,7 +256,7 @@ public:
virtual void block_txn_start(bool readonly);
virtual void block_txn_stop();
virtual void block_txn_abort();
virtual bool block_rtxn_start() const;
virtual bool block_rtxn_start(MDB_txn **mtxn, mdb_txn_cursors **mcur) const;
virtual void block_rtxn_stop() const;
virtual void pop_block(block& blk, std::vector<transaction>& txs);
@ -337,16 +332,6 @@ private:
*/
tx_out output_from_blob(const blobdata& blob) const;
/**
* @brief get the global index of the index-th output of the given amount
*
* @param amount the output amount
* @param index the index into the set of outputs of that amount
*
* @return the global index of the desired output
*/
uint64_t get_output_global_index(const uint64_t& amount, const uint64_t& index);
void check_open() const;
virtual bool is_read_only() const;
@ -365,9 +350,7 @@ private:
MDB_dbi m_tx_outputs;
MDB_dbi m_output_txs;
MDB_dbi m_output_indices;
MDB_dbi m_output_amounts;
MDB_dbi m_output_keys;
MDB_dbi m_spent_keys;
@ -384,6 +367,7 @@ private:
std::string m_folder;
mdb_txn_safe* m_write_txn; // may point to either a short-lived txn or a batch txn
mdb_txn_safe* m_write_batch_txn; // persist batch txn outside of BlockchainLMDB
boost::thread::id m_writer;
bool m_batch_transactions; // support for batch transactions
bool m_batch_active; // whether batch transaction is in progress