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move the rct commitments to the output_amounts database

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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.
This commit is contained in:
moneromooo-monero 2016-06-29 19:55:49 +01:00
parent 6d0e47148b
commit 59a66e209a
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GPG key ID: 686F07454D6CEFC3
8 changed files with 63 additions and 195 deletions
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6
tests/unit_tests/hardfork.cpp
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@ -96,14 +96,10 @@ public:
virtual void remove_block() { blocks.pop_back(); }
virtual uint64_t add_transaction_data(const crypto::hash& blk_hash, const transaction& tx, const crypto::hash& tx_hash) {return 0;}
virtual void remove_transaction_data(const crypto::hash& tx_hash, const transaction& tx) {}
virtual uint64_t add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time) {return 0;}
virtual uint64_t add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment) {return 0;}
virtual void add_tx_amount_output_indices(const uint64_t tx_index, const std::vector<uint64_t>& amount_output_indices) {}
virtual void add_spent_key(const crypto::key_image& k_image) {}
virtual void remove_spent_key(const crypto::key_image& k_image) {}
virtual uint64_t get_num_rct_outputs() const { return 0; }
virtual rct::key get_rct_commitment(uint64_t idx) const { return rct::key(); }
virtual uint64_t add_rct_commitment(const rct::key &commitment) { return 0; }
virtual void remove_rct_commitment(uint64_t idx) {}
virtual bool for_all_key_images(std::function<bool(const crypto::key_image&)>) const { return true; }
virtual bool for_all_blocks(std::function<bool(uint64_t, const crypto::hash&, const cryptonote::block&)>) const { return true; }