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Optimized RNG usage

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This commit is contained in:
SChernykh
2023-01-17 16:15:24 +01:00
parent c855bb769a
commit 451778d704
4 changed files with 16 additions and 13 deletions
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src/block_template.cpp
+7 -4
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@@ -198,9 +198,12 @@ static FORCEINLINE uint64_t get_block_reward(uint64_t base_reward, uint64_t medi
void BlockTemplate::shuffle_tx_order()
{
const int64_t n = static_cast<int64_t>(m_mempoolTxsOrder.size());
for (int64_t i = n - 1; i > 0; --i) {
std::swap(m_mempoolTxsOrder[i], m_mempoolTxsOrder[m_rng() % (i + 1)]);
const uint64_t n = m_mempoolTxsOrder.size();
if (n > 1) {
for (uint64_t i = 0, k; i < n - 1; ++i) {
umul128(m_rng(), n - i, &k);
std::swap(m_mempoolTxsOrder[i], m_mempoolTxsOrder[i + k]);
}
}
}
@@ -636,7 +639,7 @@ void BlockTemplate::update(const MinerData& data, const Mempool& mempool, Wallet
uint32_t* sidechain_extra = m_poolBlockTemplate->m_sidechainExtraBuf;
sidechain_extra[0] = 0;
sidechain_extra[1] = (P2POOL_VERSION_MAJOR << 16) | P2POOL_VERSION_MINOR;
sidechain_extra[2] = static_cast<uint32_t>(m_rng());
sidechain_extra[2] = static_cast<uint32_t>(m_rng() >> 32);
sidechain_extra[3] = 0;
m_poolBlockTemplate->m_nonce = 0;