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precomputed block hashes are now in blocks of N (currently 256)

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This shaves a lot of space off binaries
This commit is contained in:
moneromooo-monero
2017-09-13 21:03:04 +01:00
parent 1a73843cec
commit 7adceee634
12 changed files with 182 additions and 12 deletions
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14
src/blockchain_utilities/blocksdat_file.cpp
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@@ -82,7 +82,7 @@ bool BlocksdatFile::open_writer(const boost::filesystem::path& file_path, uint64
bool BlocksdatFile::initialize_file(uint64_t block_stop)
{
const uint32_t nblocks = block_stop + 1;
const uint32_t nblocks = (block_stop + 1) / HASH_OF_HASHES_STEP;
unsigned char nblocksc[4];
nblocksc[0] = nblocks & 0xff;
@@ -101,8 +101,16 @@ bool BlocksdatFile::initialize_file(uint64_t block_stop)
void BlocksdatFile::write_block(const crypto::hash& block_hash)
{
const std::string data(block_hash.data, sizeof(block_hash));
*m_raw_data_file << data;
m_hashes.push_back(block_hash);
while (m_hashes.size() >= HASH_OF_HASHES_STEP)
{
crypto::hash hash;
crypto::cn_fast_hash(m_hashes.data(), HASH_OF_HASHES_STEP * sizeof(crypto::hash), hash);
memmove(m_hashes.data(), m_hashes.data() + HASH_OF_HASHES_STEP * sizeof(crypto::hash), (m_hashes.size() - HASH_OF_HASHES_STEP) * sizeof(crypto::hash));
m_hashes.resize(m_hashes.size() - HASH_OF_HASHES_STEP);
const std::string data(hash.data, sizeof(hash));
*m_raw_data_file << data;
}
}
bool BlocksdatFile::close()