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from hard fork 2, claim a quantized reward in coinbase

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The small leftover is carried forward
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moneromooo-monero 2015-10-06 16:20:23 +01:00
parent 22b15704b6
commit 90ccad1236
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GPG Key ID: 686F07454D6CEFC3
4 changed files with 22 additions and 4 deletions
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1
src/cryptonote_config.h
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@ -118,6 +118,7 @@ namespace config
uint64_t const DEFAULT_FEE_ATOMIC_XMR_PER_KB = 500; // Just a placeholder! Change me!
uint8_t const FEE_CALCULATION_MAX_RETRIES = 10;
uint64_t const DEFAULT_DUST_THRESHOLD = ((uint64_t)10000000000); // pow(10, 10)
uint64_t const BASE_REWARD_CLAMP_THRESHOLD = ((uint64_t)100000000); // pow(10, 8)
std::string const P2P_REMOTE_DEBUG_TRUSTED_PUB_KEY = "0000000000000000000000000000000000000000000000000000000000000000";
uint64_t const CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX = 18;

12
src/cryptonote_core/blockchain.cpp
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@ -975,6 +975,14 @@ bool Blockchain::validate_miner_transaction(const block& b, size_t cumulative_bl
return false;
}
}
else
{
// from hard fork 2, since a miner can claim less than the full block reward, we update the base_reward
// to show the amount of coins that were actually generated, the remainder will be pushed back for later
// emission. This modifies the emission curve very slightly.
CHECK_AND_ASSERT_MES(money_in_use - fee <= base_reward, false, "base reward calculation bug");
base_reward = money_in_use - fee;
}
return true;
}
//------------------------------------------------------------------
@ -1093,7 +1101,7 @@ bool Blockchain::create_block_template(block& b, const account_public_address& m
block size, so first miner transaction generated with fake amount of money, and with phase we know think we know expected block size
*/
//make blocks coin-base tx looks close to real coinbase tx to get truthful blob size
bool r = construct_miner_tx(height, median_size, already_generated_coins, txs_size, fee, miner_address, b.miner_tx, ex_nonce, 11);
bool r = construct_miner_tx(height, median_size, already_generated_coins, txs_size, fee, miner_address, b.miner_tx, ex_nonce, 11, m_hardfork->get_current_version());
CHECK_AND_ASSERT_MES(r, false, "Failed to construc miner tx, first chance");
size_t cumulative_size = txs_size + get_object_blobsize(b.miner_tx);
#if defined(DEBUG_CREATE_BLOCK_TEMPLATE)
@ -1102,7 +1110,7 @@ bool Blockchain::create_block_template(block& b, const account_public_address& m
#endif
for (size_t try_count = 0; try_count != 10; ++try_count)
{
r = construct_miner_tx(height, median_size, already_generated_coins, cumulative_size, fee, miner_address, b.miner_tx, ex_nonce, 11);
r = construct_miner_tx(height, median_size, already_generated_coins, cumulative_size, fee, miner_address, b.miner_tx, ex_nonce, 11, m_hardfork->get_current_version());
CHECK_AND_ASSERT_MES(r, false, "Failed to construc miner tx, second chance");
size_t coinbase_blob_size = get_object_blobsize(b.miner_tx);

11
src/cryptonote_core/cryptonote_format_utils.cpp
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@ -105,7 +105,7 @@ namespace cryptonote
return true;
}
//---------------------------------------------------------------
bool construct_miner_tx(size_t height, size_t median_size, uint64_t already_generated_coins, size_t current_block_size, uint64_t fee, const account_public_address &miner_address, transaction& tx, const blobdata& extra_nonce, size_t max_outs) {
bool construct_miner_tx(size_t height, size_t median_size, uint64_t already_generated_coins, size_t current_block_size, uint64_t fee, const account_public_address &miner_address, transaction& tx, const blobdata& extra_nonce, size_t max_outs, uint8_t hard_fork_version) {
tx.vin.clear();
tx.vout.clear();
tx.extra.clear();
@ -125,6 +125,15 @@ namespace cryptonote
LOG_PRINT_L0("Block is too big");
return false;
}
// from hard fork 2, we cut out the low significant digits. This makes the tx smaller, and
// keeps the paid amount almost the same. The unpaid remainder gets pushed back to the
// emission schedule
if (hard_fork_version >= 2)
{
block_reward = block_reward - block_reward % ::config::BASE_REWARD_CLAMP_THRESHOLD;
}
#if defined(DEBUG_CREATE_BLOCK_TEMPLATE)
LOG_PRINT_L1("Creating block template: reward " << block_reward <<
", fee " << fee)

2
src/cryptonote_core/cryptonote_format_utils.h
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@ -44,7 +44,7 @@ namespace cryptonote
crypto::hash get_transaction_prefix_hash(const transaction_prefix& tx);
bool parse_and_validate_tx_from_blob(const blobdata& tx_blob, transaction& tx, crypto::hash& tx_hash, crypto::hash& tx_prefix_hash);
bool parse_and_validate_tx_from_blob(const blobdata& tx_blob, transaction& tx);
bool construct_miner_tx(size_t height, size_t median_size, uint64_t already_generated_coins, size_t current_block_size, uint64_t fee, const account_public_address &miner_address, transaction& tx, const blobdata& extra_nonce = blobdata(), size_t max_outs = 1);
bool construct_miner_tx(size_t height, size_t median_size, uint64_t already_generated_coins, size_t current_block_size, uint64_t fee, const account_public_address &miner_address, transaction& tx, const blobdata& extra_nonce = blobdata(), size_t max_outs = 1, uint8_t hard_fork_version = 1);
bool encrypt_payment_id(crypto::hash8 &payment_id, const crypto::public_key &public_key, const crypto::secret_key &secret_key);
bool decrypt_payment_id(crypto::hash8 &payment_id, const crypto::public_key &public_key, const crypto::secret_key &secret_key);