monzero-core.git/src/blockchain_db, branch v0.10.0

cmake: transitive deps and remove deprecated LINK_*

2016-09-18T06:56:26Z

Keep the immediate direct deps at the library that depends on them, declare deps as PUBLIC so that targets that link against that library get the library's deps as transitive deps. Break dep cycle between blockchain_db <-> crytonote_core. No code refactoring, just hide cycle from cmake so that it doesn't complain (cycles are allowed only between static libs, not shared libs). This is in preparation for supproting BUILD_SHARED_LIBS cmake built-in option for building internal libs as shared.

core: faster find_blockchain_supplement

2016-08-31T09:03:32Z

Since this queries block heights for blocks that may or may not exist, queries for non existing blocks would throw an exception, and that would slow down the loop a lot. 7 seconds to go through a 30 hash list. Fix this by adding an optional return block height to block_exists and using this instead. Actual errors will still throw an exception. This also cuts down on log exception spam.

db_lmdb: fix reorg with "halfway rct" coinbase outputs

2016-08-29T21:44:17Z

New "Halfway RingCT" outputs for coinbase transactions

2016-08-28T20:30:26Z

When RingCT is enabled, outputs from coinbase transactions are created as a single output, and stored as RingCT output, with a fake mask. Their amount is not hidden on the blockchain itself, but they are then able to be used as fake inputs in a RingCT ring. Since the output amounts are hidden, their "dustiness" is not an obstacle anymore to mixing, and this makes the coinbase transactions a lot smaller, as well as helping the TXO set to grow more slowly. Also add a new "Null" type of rct signature, which decreases the size required when no signatures are to be stored, as in a coinbase tx.

move the rct commitments to the output_amounts database

2016-08-28T20:29:02Z

Since these are needed at the same time as the output pubkeys, this is a whole lot faster, and takes less space. Only outputs of 0 amount store the commitment. When reading other outputs, a fake commitment is regenerated on the fly. This avoids having to rewrite the database to add space for fake commitments for existing outputs. This code relies on two things: - LMDB must support fixed size records per key, rather than per database (ie, all records on key 0 are the same size, all records for non 0 keys are same size, but records from key 0 and non 0 keys do have different sizes). - the commitment must be directly after the rest of the data in outkey and output_data_t.

add rct to the protocol

2016-08-28T20:28:37Z

It is not yet constrained to a fork, so don't use on the real network or you'll be orphaned or rejected.

db_lmdb: update reset for recent db changes

2016-08-28T20:28:35Z

- we need to drop the new m_tx_indices database - we reset the version to current version This fixes the core tests failing to initialize.

blockchain_db: add functions for adding/removing/getting rct commitments

2016-08-28T20:28:11Z

db_lmdb: do not try to modify the database in read only mode

2016-08-26T18:33:25Z

Merge pull request #948

2016-08-11T20:43:14Z

11dc091 Fake outs set is now decided by the wallet (moneromooo-monero) 1593553 new unlocked parameter to output_histogram (moneromooo-monero)