github-jwinterm/aeon
1
0
Fork 0
mirror of https://github.com/jwinterm/aeon.git synced 2026-10-17 05:01:26 +02:00
Code Issues Packages Projects Releases Wiki Activity

Optimize sync speed within checkpoint zone

Browse Source
This commit is contained in:
Javier Smooth
2015-09-03 02:34:14 -07:00
parent eaa844b713
commit 05fdf5995c
1 changed files with 21 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/cryptonote_core/blockchain_storage.cpp
+21 -19
View File
@@ -1551,28 +1551,30 @@ bool blockchain_storage::handle_block_to_main_chain(const block& bl, const crypt
TIME_MEASURE_START(longhash_calculating_time);
crypto::hash proof_of_work = null_hash;
// Formerly the code below contained an if loop with the following condition
// !m_checkpoints.is_in_checkpoint_zone(get_current_blockchain_height())
// however, this caused the daemon to not bother checking PoW for blocks
// before checkpoints, which is very dangerous behaviour. We moved the PoW
// validation out of the next chunk of code to make sure that we correctly
// check PoW now.
proof_of_work = get_block_longhash(bl, m_blocks.size());
if(!check_hash(proof_of_work, current_diffic))
if(!m_checkpoints.is_in_checkpoint_zone(get_current_blockchain_height()))
{
LOG_PRINT_L0("Block with id: " << id << ENDL
<< "height: " << m_blocks.size() << ENDL
<< "have not enough proof of work: " << proof_of_work << ENDL
<< "nexpected difficulty: " << current_diffic );
bvc.m_verifivation_failed = true;
return false;
proof_of_work = get_block_longhash(bl, m_blocks.size());
if(!check_hash(proof_of_work, current_diffic))
{
LOG_PRINT_L0("Block with id: " << id << ENDL
<< "height: " << m_blocks.size() << ENDL
<< "have not enough proof of work: " << proof_of_work << ENDL
<< "nexpected difficulty: " << current_diffic );
bvc.m_verifivation_failed = true;
return false;
}
m_is_in_checkpoint_zone=false;
}
// If we're at a checkpoint, ensure that our hardcoded checkpoint hash
// is correct.
if(m_checkpoints.is_in_checkpoint_zone(get_current_blockchain_height()))
else
{
// In the checkpoint zone we do three things
// 1. Match known hashes for block heights in checkpoints_create.h
// 2. Skip PoW verification to optimize syncing (only on the main chain; alternate blocks still checked)
// 3. Skip signature verification to optmiize syncing
m_is_in_checkpoint_zone=true;
if(!m_checkpoints.check_block(get_current_blockchain_height(), id))
{
LOG_ERROR("CHECKPOINT VALIDATION FAILED");