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Use MDB_PREV_MULTIPLE
in get_global_output_indices
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parent
7a4755d3a4
commit
02abe3590d
@ -2475,22 +2475,51 @@ void BlockchainLMDB::get_output_global_indices(const uint64_t& amount, const std
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LOG_PRINT_L1("Index: " << index << " Elems: " << num_elems << " partial results found for get_output_tx_and_index");
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break;
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}
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while (index >= curcount)
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if (!curcount && index > num_elems/2)
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{
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TIME_MEASURE_START(db1);
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if (mdb_cursor_get(cur, &k, &v, curcount == 0 ? MDB_GET_MULTIPLE : MDB_NEXT_MULTIPLE) != 0)
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mdb_cursor_get(cur, &k, &v, MDB_LAST_DUP);
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mdb_cursor_get(cur, &k, &v, MDB_PREV); /* kludge to unset C_EOF */
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mdb_cursor_get(cur, &k, &v, MDB_NEXT);
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mdb_cursor_get(cur, &k, &v, MDB_GET_MULTIPLE);
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curcount = num_elems;
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while(1)
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{
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// allow partial results
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result = false;
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break;
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TIME_MEASURE_START(db1);
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int count = v.mv_size / sizeof(uint64_t);
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curcount -= count;
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if (curcount > index)
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{
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mdb_cursor_get(cur, &k, &v, MDB_PREV_MULTIPLE);
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} else
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{
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blockstart = curcount;
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curcount += count;
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break;
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}
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TIME_MEASURE_FINISH(db1);
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t_dbmul += db1;
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}
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int count = v.mv_size / sizeof(uint64_t);
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} else
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{
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while (index >= curcount)
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{
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TIME_MEASURE_START(db1);
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if (mdb_cursor_get(cur, &k, &v, curcount == 0 ? MDB_GET_MULTIPLE : MDB_NEXT_MULTIPLE) != 0)
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{
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// allow partial results
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result = false;
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break;
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}
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blockstart = curcount;
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curcount += count;
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TIME_MEASURE_FINISH(db1);
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t_dbmul += db1;
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int count = v.mv_size / sizeof(uint64_t);
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blockstart = curcount;
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curcount += count;
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TIME_MEASURE_FINISH(db1);
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t_dbmul += db1;
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}
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}
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LOG_PRINT_L3("Records returned: " << curcount << " Index: " << index);
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