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remove hf_starting_height db

Browse source 
It's not really needed, it used to be an optimization for when
that code was not using the db and needed to recalculate things
fast on startup.
This commit is contained in:
moneromooo-monero 2016-07-13 21:19:05 +01:00
parent 18dd507024
commit d7b681cd65
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
9 changed files with 9 additions and 186 deletions
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28
src/blockchain_db/berkeleydb/db_bdb.cpp
View file

@ -2186,34 +2186,6 @@ std::map<uint64_t, uint64_t>::BlockchainBDB::get_output_histogram(const std::vec
throw1(DB_ERROR("Not implemented."));
}
void BlockchainBDB::set_hard_fork_starting_height(uint8_t version, uint64_t height)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<uint32_t> val_key(version + 1);
Dbt_copy<uint64_t> val(height);
if (m_hf_starting_heights->put(DB_DEFAULT_TX, &val_key, &val, 0))
throw1(DB_ERROR("Error adding hard fork starting height to db transaction."));
}
uint64_t BlockchainBDB::get_hard_fork_starting_height(uint8_t version) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<uint32_t> key(version + 1);
Dbt_copy<uint64_t> result;
auto get_result = m_hf_starting_heights->get(DB_DEFAULT_TX, &key, &result, 0);
if (get_result == DB_NOTFOUND || get_result == DB_KEYEMPTY)
return std::numeric_limits<uint64_t>::max();
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve hard fork starting height from the db"));
return result;
}
void BlockchainBDB::check_hard_fork_info()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);

2
src/blockchain_db/berkeleydb/db_bdb.h
View file

@ -385,8 +385,6 @@ private:
virtual bool for_all_outputs(std::function<bool(uint64_t amount, const crypto::hash &tx_hash, size_t tx_idx)> f) const;
// Hard fork related storage
virtual void set_hard_fork_starting_height(uint8_t version, uint64_t height);
virtual uint64_t get_hard_fork_starting_height(uint8_t version) const;
virtual void set_hard_fork_version(uint64_t height, uint8_t version);
virtual uint8_t get_hard_fork_version(uint64_t height) const;
virtual void check_hard_fork_info();

21
src/blockchain_db/blockchain_db.h
View file

@ -1274,27 +1274,6 @@ public:
// Hard fork related storage
//
// FIXME: verify that this is all correct
// - TW
/**
* @brief sets the height at which a hard fork has been voted to happen
*
*
* @param version the version voted to fork to
* @param height the height of the first block on the new fork
*/
virtual void set_hard_fork_starting_height(uint8_t version, uint64_t height) = 0;
/**
* @brief gets the height at which a hard fork has been voted to happen
*
* @param version the version to check
*
* @return the height at which the hard fork was accepted, if it has been,
* otherwise max(uint64_t)
*/
virtual uint64_t get_hard_fork_starting_height(uint8_t version) const = 0;
/**
* @brief sets which hardfork version a height is on
*

76
src/blockchain_db/lmdb/db_lmdb.cpp
View file

@ -117,13 +117,6 @@ int compare_uint64(const MDB_val *a, const MDB_val *b)
return (va < vb) ? -1 : va > vb;
}
int compare_uint8(const MDB_val *a, const MDB_val *b)
{
const uint8_t va = *(const uint8_t*)a->mv_data;
const uint8_t vb = *(const uint8_t*)b->mv_data;
return va - vb;
};
int compare_hash32(const MDB_val *a, const MDB_val *b)
{
uint32_t *va = (uint32_t*) a->mv_data;
@ -1103,9 +1096,10 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
mdb_set_dupsort(txn, m_output_txs, compare_uint64);
mdb_set_dupsort(txn, m_block_info, compare_uint64);
mdb_set_compare(txn, m_hf_starting_heights, compare_uint8);
mdb_set_compare(txn, m_properties, compare_string);
mdb_drop(txn, m_hf_starting_heights, 1);
// get and keep current height
MDB_stat db_stats;
if ((result = mdb_stat(txn, m_blocks, &db_stats)))
@ -2638,29 +2632,6 @@ std::map<uint64_t, uint64_t> BlockchainLMDB::get_output_histogram(const std::vec
void BlockchainLMDB::check_hard_fork_info()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX(0);
MDB_stat db_stat1, db_stat2;
if (mdb_stat(*txn_ptr, m_blocks, &db_stat1))
throw0(DB_ERROR("Failed to query m_blocks"));
if (mdb_stat(*txn_ptr, m_hf_versions, &db_stat2))
throw0(DB_ERROR("Failed to query m_hf_starting_heights"));
if (db_stat1.ms_entries != db_stat2.ms_entries)
{
// Empty, but don't delete. This allows this function to be called after
// startup, after the subdbs have already been created, and rest of startup
// can proceed. If these don't exist, hard fork's init() will fail.
//
// If these are empty, hard fork's init() will repopulate the hard fork
// data.
mdb_drop(*txn_ptr, m_hf_starting_heights, 0);
mdb_drop(*txn_ptr, m_hf_versions, 0);
}
TXN_POSTFIX_SUCCESS();
}
void BlockchainLMDB::drop_hard_fork_info()
@ -2676,49 +2647,6 @@ void BlockchainLMDB::drop_hard_fork_info()
TXN_POSTFIX_SUCCESS();
}
void BlockchainLMDB::set_hard_fork_starting_height(uint8_t version, uint64_t height)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_BLOCK_PREFIX(0);
MDB_val_copy<uint8_t> val_key(version);
MDB_val_copy<uint64_t> val_value(height);
if (auto result = mdb_put(*txn_ptr, m_hf_starting_heights, &val_key, &val_value, MDB_APPEND))
throw1(DB_ERROR(lmdb_error("Error adding hard fork starting height to db transaction: ", result).c_str()));
TXN_BLOCK_POSTFIX_SUCCESS();
}
uint64_t BlockchainLMDB::get_hard_fork_starting_height(uint8_t version) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
MDB_val_copy<uint8_t> val_key(version);
MDB_val val_ret;
uint64_t ret = 0;
auto result = mdb_get(m_txn, m_hf_starting_heights, &val_key, &val_ret);
if (result == MDB_SUCCESS)
{
#ifdef MISALIGNED_OK
ret = *(const uint64_t*)val_ret.mv_data;
#else
memcpy(&ret, val_ret.mv_data, sizeof(uint64_t));
#endif
} else if (result == MDB_NOTFOUND)
{
ret = std::numeric_limits<uint64_t>::max();
} else if (result)
throw0(DB_ERROR(lmdb_error("Error attempting to retrieve a hard fork starting height from the db", result).c_str()));
TXN_POSTFIX_RDONLY();
return ret;
}
void BlockchainLMDB::set_hard_fork_version(uint64_t height, uint8_t version)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);

2
src/blockchain_db/lmdb/db_lmdb.h
View file

@ -307,8 +307,6 @@ private:
virtual void remove_spent_key(const crypto::key_image& k_image);
// Hard fork
virtual void set_hard_fork_starting_height(uint8_t version, uint64_t height);
virtual uint64_t get_hard_fork_starting_height(uint8_t version) const;
virtual void set_hard_fork_version(uint64_t height, uint8_t version);
virtual uint8_t get_hard_fork_version(uint64_t height) const;
virtual void check_hard_fork_info();

4
src/blockchain_utilities/blockchain_dump.cpp
View file

@ -419,10 +419,6 @@ int main(int argc, char* argv[])
for (uint64_t h = 0; h < height; ++h)
write_pod(d, boost::lexical_cast<std::string>(h), (unsigned int)db->get_hard_fork_version(h));
end_compound(d);
start_struct(d, "hf_starting_heights", true);
for (unsigned int v = 0; v <= 255; ++v)
write_pod(d, boost::lexical_cast<std::string>(v), db->get_hard_fork_starting_height(v));
end_compound(d);
}
#endif
end_compound(d);

23
src/cryptonote_core/hardfork.cpp
View file

@ -137,10 +137,6 @@ bool HardFork::add(uint8_t block_version, uint8_t voting_version, uint64_t heigh
uint8_t voted = get_voted_fork_index(height + 1);
if (voted > current_fork_index) {
for (int v = heights[current_fork_index].version + 1; v <= heights[voted].version; ++v) {
// we reached the vote threshold with this block, next one will be forked
db.set_hard_fork_starting_height(v, height + 1);
}
current_fork_index = voted;
}
@ -172,7 +168,12 @@ void HardFork::init()
else
height = 1;
bool populate = db.get_hard_fork_starting_height(original_version) == std::numeric_limits<uint64_t>::max();
bool populate = false;
try
{
db.get_hard_fork_version(0);
}
catch (...) { populate = true; }
if (populate) {
LOG_PRINT_L0("The DB has no hard fork info, reparsing from start");
height = 1;
@ -182,7 +183,6 @@ void HardFork::init()
reorganize_from_chain_height(height);
// reorg will not touch the genesis block, use this as a flag for populating done
db.set_hard_fork_version(0, original_version);
db.set_hard_fork_starting_height(original_version, 0);
}
else {
rescan_from_chain_height(height);
@ -215,7 +215,6 @@ bool HardFork::reorganize_from_block_height(uint64_t height)
const uint64_t rescan_height = height >= (window_size - 1) ? height - (window_size -1) : 0;
const uint8_t start_version = height == 0 ? original_version : db.get_hard_fork_version(height);
while (current_fork_index > 0 && heights[current_fork_index].version > start_version) {
db.set_hard_fork_starting_height(heights[current_fork_index].version, std::numeric_limits<uint64_t>::max());
--current_fork_index;
}
for (uint64_t h = rescan_height; h <= height; ++h) {
@ -227,10 +226,6 @@ bool HardFork::reorganize_from_block_height(uint64_t height)
uint8_t voted = get_voted_fork_index(height + 1);
if (voted > current_fork_index) {
for (int v = heights[current_fork_index].version + 1; v <= heights[voted].version; ++v) {
// we reached the vote threshold with this block, next one will be forked
db.set_hard_fork_starting_height(v, height + 1);
}
current_fork_index = voted;
}
@ -337,12 +332,6 @@ uint8_t HardFork::get(uint64_t height) const
return db.get_hard_fork_version(height);
}
uint64_t HardFork::get_start_height(uint8_t version) const
{
CRITICAL_REGION_LOCAL(lock);
return db.get_hard_fork_starting_height(version);
}
uint8_t HardFork::get_current_version() const
{
CRITICAL_REGION_LOCAL(lock);

7
src/cryptonote_core/hardfork.h
View file

@ -154,13 +154,6 @@ namespace cryptonote
*/
uint8_t get(uint64_t height) const;
/**
* @brief returns the height of the first block on the fork with th given version
*
* @param version version of the fork to query the starting block for
*/
uint64_t get_start_height(uint8_t version) const;
/**
* @brief returns the latest "ideal" version
*

32
tests/unit_tests/hardfork.cpp
View file

@ -42,10 +42,7 @@ using namespace cryptonote;
class TestDB: public BlockchainDB {
public:
TestDB() {
for (size_t n = 0; n < 256; ++n)
starting_height[n] = std::numeric_limits<uint64_t>::max();
}
TestDB() {};
virtual void open(const std::string& filename, const int db_flags = 0) { }
virtual void close() {}
virtual void sync() {}
@ -122,12 +119,6 @@ public:
virtual block get_block_from_height(const uint64_t& height) const {
return blocks[height];
}
virtual void set_hard_fork_starting_height(uint8_t version, uint64_t height) {
starting_height[version] = height;
}
virtual uint64_t get_hard_fork_starting_height(uint8_t version) const {
return starting_height[version];
}
virtual void set_hard_fork_version(uint64_t height, uint8_t version) {
if (versions.size() <= height)
versions.resize(height+1);
@ -140,7 +131,6 @@ public:
private:
std::vector<block> blocks;
uint64_t starting_height[256];
std::deque<uint8_t> versions;
};
@ -321,10 +311,6 @@ TEST(reorganize, Same)
uint8_t version = hh >= history ? block_versions[hh - history] : 1;
ASSERT_EQ(hf.get(hh), version);
}
ASSERT_EQ(hf.get_start_height(1), 0);
ASSERT_EQ(hf.get_start_height(4), 2 + history);
ASSERT_EQ(hf.get_start_height(7), 4 + history);
ASSERT_EQ(hf.get_start_height(9), 6 + history);
}
}
}
@ -355,10 +341,6 @@ TEST(reorganize, Changed)
for (int hh = 0; hh < 16; ++hh) {
ASSERT_EQ(hf.get(hh), expected_versions[hh]);
}
ASSERT_EQ(hf.get_start_height(1), 0);
ASSERT_EQ(hf.get_start_height(4), 6);
ASSERT_EQ(hf.get_start_height(7), 8);
ASSERT_EQ(hf.get_start_height(9), 10);
}
// delay a bit for 9, and go back to 1 to check it stays at 9
@ -379,10 +361,6 @@ TEST(reorganize, Changed)
for (int hh = 0; hh < 15; ++hh) {
ASSERT_EQ(hf.get(hh), expected_versions_new[hh]);
}
ASSERT_EQ(hf.get_start_height(1), 0);
ASSERT_EQ(hf.get_start_height(4), 6);
ASSERT_EQ(hf.get_start_height(7), 11);
ASSERT_EQ(hf.get_start_height(9), 14);
}
TEST(voting, threshold)
@ -463,8 +441,6 @@ TEST(new_blocks, denied)
ASSERT_TRUE(hf.add(mkblock(1, 2), 8)); // we reach 50% of the last 4
ASSERT_FALSE(hf.add(mkblock(2, 1), 9)); // so this one can't get added
ASSERT_TRUE(hf.add(mkblock(2, 2), 9));
ASSERT_EQ(hf.get_start_height(2), 9);
}
TEST(new_version, early)
@ -485,8 +461,6 @@ TEST(new_version, early)
ASSERT_TRUE(hf.add(mkblock(2, 2), 5));
ASSERT_FALSE(hf.add(mkblock(2, 1), 6)); // we don't accept 1 anymore
ASSERT_TRUE(hf.add(mkblock(2, 2), 7)); // but we do accept 2
ASSERT_EQ(hf.get_start_height(2), 4);
}
TEST(reorganize, changed)
@ -521,8 +495,6 @@ TEST(reorganize, changed)
ADD_TRUE(3, 7);
ADD_TRUE(4, 8);
ADD_TRUE(4, 9);
ASSERT_EQ(hf.get_start_height(2), 4); // reaches threshold 2 at height 3, so height 4 forks
ASSERT_EQ(hf.get_start_height(3), 9);
ASSERT_EQ(hf.get_current_version(), 3);
// pop a few blocks and check current version goes back down
@ -539,9 +511,7 @@ TEST(reorganize, changed)
ADD_TRUE(2, 7);
ADD_TRUE(2, 8);
ADD_TRUE(2, 9);
ASSERT_EQ(hf.get_start_height(2), 4); // unchanged
ASSERT_EQ(hf.get_current_version(), 2); // we did not bump to 3 this time
ASSERT_EQ(hf.get_start_height(3), std::numeric_limits<uint64_t>::max()); // not yet
}
TEST(get, higher)