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blockchain: always select random outs using triangular distribution

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It was only used by the older blockchain_storage.
We also move the code to the calling blockchain level, to avoid
replicating the code in every DB implementation. This also makes
the get_random_out method obsolete, and we delete it.
This commit is contained in:
moneromooo-monero 2015-08-09 18:07:44 +01:00
parent 9c3715e46a
commit 275894cdef
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GPG key ID: 686F07454D6CEFC3
6 changed files with 9 additions and 35 deletions
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13
src/blockchain_db/lmdb/db_lmdb.cpp
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@ -1620,19 +1620,6 @@ uint64_t BlockchainLMDB::get_tx_block_height(const crypto::hash& h) const
return *(const uint64_t*)result.mv_data;
}
//FIXME: make sure the random method used here is appropriate
uint64_t BlockchainLMDB::get_random_output(const uint64_t& amount) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
uint64_t num_outputs = get_num_outputs(amount);
if (num_outputs == 0)
throw1(OUTPUT_DNE("Attempting to get a random output for an amount, but none exist"));
return crypto::rand<uint64_t>() % num_outputs;
}
uint64_t BlockchainLMDB::get_num_outputs(const uint64_t& amount) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);