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Hardcode default consensus ID for faster startup

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SChernykh 2021-09-16 14:23:14 +02:00
parent 8aa9e54dc4
commit b4ea125a8a
1 changed files with 57 additions and 54 deletions
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111
src/side_chain.cpp
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@ -55,7 +55,7 @@ SideChain::SideChain(p2pool* pool, NetworkType type, const char* pool_name)
: m_pool(pool)
, m_networkType(type)
, m_chainTip(nullptr)
, m_poolName(pool_name ? pool_name : "mainnet test 2")
, m_poolName(pool_name ? pool_name : "default")
, m_targetBlockTime(10)
, m_minDifficulty(MIN_DIFFICULTY, 0)
, m_chainWindowSize(2160)
@ -78,63 +78,66 @@ SideChain::SideChain(p2pool* pool, NetworkType type, const char* pool_name)
LOGINFO(1, "generating consensus ID");
const randomx_flags flags = randomx_get_flags();
randomx_cache* cache = randomx_alloc_cache(flags | RANDOMX_FLAG_LARGE_PAGES);
if (!cache) {
LOGWARN(1, "couldn't allocate RandomX cache using large pages");
cache = randomx_alloc_cache(flags);
if (!cache) {
LOGERR(1, "couldn't allocate RandomX cache, aborting");
panic();
}
}
{
char consensus_str[log::Stream::BUF_SIZE + 1];
log::Stream s(consensus_str);
s << m_networkType << '\0'
<< m_poolName << '\0'
<< m_poolPassword << '\0'
<< m_targetBlockTime << '\0'
<< m_minDifficulty << '\0'
<< m_chainWindowSize << '\0'
<< m_unclePenalty << '\0';
randomx_init_cache(cache, consensus_str, s.m_pos);
}
// Intentionally not a power of 2
constexpr size_t scratchpad_size = 1009;
rx_vec_i128* scratchpad = reinterpret_cast<rx_vec_i128*>(cache->memory);
rx_vec_i128* scratchpad_end = scratchpad + scratchpad_size;
rx_vec_i128* scratchpad_ptr = scratchpad;
rx_vec_i128* cache_ptr = scratchpad_end;
for (uint64_t i = scratchpad_size, n = RANDOMX_ARGON_MEMORY * 1024 / sizeof(rx_vec_i128); i < n; ++i) {
*scratchpad_ptr = rx_xor_vec_i128(*scratchpad_ptr, *cache_ptr);
++cache_ptr;
++scratchpad_ptr;
if (scratchpad_ptr == scratchpad_end) {
scratchpad_ptr = scratchpad;
}
}
hash id;
keccak(reinterpret_cast<uint8_t*>(scratchpad), static_cast<int>(scratchpad_size * sizeof(rx_vec_i128)), id.h, HASH_SIZE);
randomx_release_cache(cache);
m_consensusId.assign(id.h, id.h + HASH_SIZE);
char buf[HASH_SIZE * 2 + 1];
char buf[log::Stream::BUF_SIZE + 1];
log::Stream s(buf);
s << id << '\0';
s << m_networkType << '\0'
<< m_poolName << '\0'
<< m_poolPassword << '\0'
<< m_targetBlockTime << '\0'
<< m_minDifficulty << '\0'
<< m_chainWindowSize << '\0'
<< m_unclePenalty << '\0';
constexpr char default_config[] = "mainnet\0" "default\0" "\0" "10\0" "100000\0" "2160\0" "20\0";
if (memcmp(buf, default_config, sizeof(default_config) - 1) == 0) {
// Hardcoded default consensus ID
m_consensusId.assign({ 34,175,126,231,181,11,104,146,227,153,218,107,44,108,68,39,178,81,4,212,169,4,142,0,177,110,157,240,68,7,249,24 });
}
else {
const randomx_flags flags = randomx_get_flags();
randomx_cache* cache = randomx_alloc_cache(flags | RANDOMX_FLAG_LARGE_PAGES);
if (!cache) {
LOGWARN(1, "couldn't allocate RandomX cache using large pages");
cache = randomx_alloc_cache(flags);
if (!cache) {
LOGERR(1, "couldn't allocate RandomX cache, aborting");
panic();
}
}
randomx_init_cache(cache, buf, s.m_pos);
// Intentionally not a power of 2
constexpr size_t scratchpad_size = 1009;
rx_vec_i128* scratchpad = reinterpret_cast<rx_vec_i128*>(cache->memory);
rx_vec_i128* scratchpad_end = scratchpad + scratchpad_size;
rx_vec_i128* scratchpad_ptr = scratchpad;
rx_vec_i128* cache_ptr = scratchpad_end;
for (uint64_t i = scratchpad_size, n = RANDOMX_ARGON_MEMORY * 1024 / sizeof(rx_vec_i128); i < n; ++i) {
*scratchpad_ptr = rx_xor_vec_i128(*scratchpad_ptr, *cache_ptr);
++cache_ptr;
++scratchpad_ptr;
if (scratchpad_ptr == scratchpad_end) {
scratchpad_ptr = scratchpad;
}
}
hash id;
keccak(reinterpret_cast<uint8_t*>(scratchpad), static_cast<int>(scratchpad_size * sizeof(rx_vec_i128)), id.h, HASH_SIZE);
randomx_release_cache(cache);
m_consensusId.assign(id.h, id.h + HASH_SIZE);
}
s.m_pos = 0;
s << log::hex_buf(m_consensusId.data(), m_consensusId.size()) << '\0';
// Hide most consensus ID bytes, we only want it on screen to show that we're on the right sidechain
memset(buf + 8, '*', HASH_SIZE * 2 - 16);
LOGINFO(1, "consensus ID = " << log::LightCyan() << buf);
LOGINFO(1, "consensus ID = " << log::LightCyan() << static_cast<char*>(buf));
}
SideChain::~SideChain()