Apply some CTAD

src/Common/CancelToken.cpp

@@ -35,26 +35,26 @@ namespace
 
 void CancelToken::Registry::insert(CancelToken * token)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     threads[token->thread_id] = token;
 }
 
 void CancelToken::Registry::remove(CancelToken * token)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     threads.erase(token->thread_id);
 }
 
 void CancelToken::Registry::signal(UInt64 tid)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     if (auto it = threads.find(tid); it != threads.end())
         it->second->signalImpl();
 }
 
 void CancelToken::Registry::signal(UInt64 tid, int code, const String & message)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     if (auto it = threads.find(tid); it != threads.end())
         it->second->signalImpl(code, message);
 }

src/Common/ConcurrentBoundedQueue.h

@@ -163,14 +163,14 @@ public:
     /// Returns size of queue
     size_t size() const
     {
-        std::lock_guard<std::mutex> lock(queue_mutex);
+        std::lock_guard lock(queue_mutex);
         return queue.size();
     }
 
     /// Returns if queue is empty
     bool empty() const
     {
-        std::lock_guard<std::mutex> lock(queue_mutex);
+        std::lock_guard lock(queue_mutex);
         return queue.empty();
     }
 
@@ -184,7 +184,7 @@ public:
         bool was_finished_before = false;
 
         {
-            std::lock_guard<std::mutex> lock(queue_mutex);
+            std::lock_guard lock(queue_mutex);
 
             if (is_finished)
                 return true;
@@ -202,14 +202,14 @@ public:
     /// Returns if queue is finished
     bool isFinished() const
     {
-        std::lock_guard<std::mutex> lock(queue_mutex);
+        std::lock_guard lock(queue_mutex);
         return is_finished;
     }
 
     /// Returns if queue is finished and empty
     bool isFinishedAndEmpty() const
     {
-        std::lock_guard<std::mutex> lock(queue_mutex);
+        std::lock_guard lock(queue_mutex);
         return is_finished && queue.empty();
     }
 
@@ -217,7 +217,7 @@ public:
     void clear()
     {
         {
-            std::lock_guard<std::mutex> lock(queue_mutex);
+            std::lock_guard lock(queue_mutex);
 
             if (is_finished)
                 return;
@@ -233,7 +233,7 @@ public:
     void clearAndFinish()
     {
         {
-            std::lock_guard<std::mutex> lock(queue_mutex);
+            std::lock_guard lock(queue_mutex);
 
             std::queue<T> empty_queue;
             queue.swap(empty_queue);

src/Common/DateLUT.cpp

@@ -149,7 +149,7 @@ DateLUT::DateLUT()
 
 const DateLUTImpl & DateLUT::getImplementation(const std::string & time_zone) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     auto it = impls.emplace(time_zone, nullptr).first;
     if (!it->second)

src/Common/StatusInfo.h

@@ -26,13 +26,13 @@ namespace CurrentStatusInfo
 
     inline void set(Status status, Key key, Int8 value)
     {
-        std::lock_guard<std::mutex> lock(locks[status]);
+        std::lock_guard lock(locks[status]);
         values[status][key] = value;
     }
 
     inline void unset(Status status, Key key)
     {
-        std::lock_guard<std::mutex> lock(locks[status]);
+        std::lock_guard lock(locks[status]);
         values[status].erase(key);
     }
 }

src/Common/TLDListsHolder.cpp

@@ -109,14 +109,14 @@ size_t TLDListsHolder::parseAndAddTldList(const std::string & name, const std::s
     }
 
     size_t tld_list_size = tld_list.size();
-    std::lock_guard<std::mutex> lock(tld_lists_map_mutex);
+    std::lock_guard lock(tld_lists_map_mutex);
     tld_lists_map.insert(std::make_pair(name, std::move(tld_list)));
     return tld_list_size;
 }
 
 const TLDList & TLDListsHolder::getTldList(const std::string & name)
 {
-    std::lock_guard<std::mutex> lock(tld_lists_map_mutex);
+    std::lock_guard lock(tld_lists_map_mutex);
     auto it = tld_lists_map.find(name);
     if (it == tld_lists_map.end())
         throw Exception(ErrorCodes::TLD_LIST_NOT_FOUND, "TLD list {} does not exist", name);

src/Common/mysqlxx/Pool.cpp

@@ -130,7 +130,7 @@ Pool::Pool(const Poco::Util::AbstractConfiguration & cfg, const std::string & co
 
 Pool::~Pool()
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     for (auto & connection : connections)
         delete static_cast<Connection *>(connection);
@@ -187,7 +187,7 @@ Pool::Entry Pool::get(uint64_t wait_timeout)
 
 Pool::Entry Pool::tryGet()
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     initialize();
 
@@ -229,7 +229,7 @@ void Pool::removeConnection(Connection* connection)
 {
     logger.trace("(%s): Removing connection.", getDescription());
 
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     if (connection)
     {
         if (connection->ref_count > 0)

src/Common/mysqlxx/PoolFactory.cpp

@@ -76,7 +76,7 @@ PoolWithFailover PoolFactory::get(const Poco::Util::AbstractConfiguration & conf
         const std::string & config_name, unsigned default_connections, unsigned max_connections, size_t max_tries)
 {
 
-    std::lock_guard<std::mutex> lock(impl->mutex);
+    std::lock_guard lock(impl->mutex);
     if (auto entry = impl->pools.find(config_name); entry != impl->pools.end())
     {
         return *(entry->second);
@@ -106,7 +106,7 @@ PoolWithFailover PoolFactory::get(const Poco::Util::AbstractConfiguration & conf
 
 void PoolFactory::reset()
 {
-    std::lock_guard<std::mutex> lock(impl->mutex);
+    std::lock_guard lock(impl->mutex);
     impl->pools.clear();
     impl->pools_by_ids.clear();
 }

src/Common/mysqlxx/PoolWithFailover.cpp

@@ -123,7 +123,7 @@ PoolWithFailover::PoolWithFailover(const PoolWithFailover & other)
 PoolWithFailover::Entry PoolWithFailover::get()
 {
     Poco::Util::Application & app = Poco::Util::Application::instance();
-    std::lock_guard<std::mutex> locker(mutex);
+    std::lock_guard locker(mutex);
 
     /// If we cannot connect to some replica due to pool overflow, than we will wait and connect.
     PoolPtr * full_pool = nullptr;

src/Coordination/InMemoryLogStore.cpp

@@ -27,7 +27,7 @@ uint64_t InMemoryLogStore::start_index() const
 
 uint64_t InMemoryLogStore::next_slot() const
 {
-    std::lock_guard<std::mutex> l(logs_lock);
+    std::lock_guard l(logs_lock);
     // Exclude the dummy entry.
     return start_idx + logs.size() - 1;
 }
@@ -35,7 +35,7 @@ uint64_t InMemoryLogStore::next_slot() const
 nuraft::ptr<nuraft::log_entry> InMemoryLogStore::last_entry() const
 {
     uint64_t next_idx = next_slot();
-    std::lock_guard<std::mutex> lock(logs_lock);
+    std::lock_guard lock(logs_lock);
     auto entry = logs.find(next_idx - 1);
     if (entry == logs.end())
         entry = logs.find(0);
@@ -47,7 +47,7 @@ uint64_t InMemoryLogStore::append(nuraft::ptr<nuraft::log_entry> & entry)
 {
     ptr<log_entry> clone = makeClone(entry);
 
-    std::lock_guard<std::mutex> l(logs_lock);
+    std::lock_guard l(logs_lock);
     uint64_t idx = start_idx + logs.size() - 1;
     logs[idx] = clone;
     return idx;
@@ -58,7 +58,7 @@ void InMemoryLogStore::write_at(uint64_t index, nuraft::ptr<nuraft::log_entry> &
     nuraft::ptr<log_entry> clone = makeClone(entry);
 
     // Discard all logs equal to or greater than `index.
-    std::lock_guard<std::mutex> l(logs_lock);
+    std::lock_guard l(logs_lock);
     auto itr = logs.lower_bound(index);
     while (itr != logs.end())
         itr = logs.erase(itr);
@@ -76,7 +76,7 @@ nuraft::ptr<std::vector<nuraft::ptr<nuraft::log_entry>>> InMemoryLogStore::log_e
     {
         nuraft::ptr<nuraft::log_entry> src = nullptr;
         {
-            std::lock_guard<std::mutex> l(logs_lock);
+            std::lock_guard l(logs_lock);
             auto entry = logs.find(i);
             if (entry == logs.end())
             {
@@ -94,7 +94,7 @@ nuraft::ptr<nuraft::log_entry> InMemoryLogStore::entry_at(uint64_t index)
 {
     nuraft::ptr<nuraft::log_entry> src = nullptr;
     {
-        std::lock_guard<std::mutex> l(logs_lock);
+        std::lock_guard l(logs_lock);
         auto entry = logs.find(index);
         if (entry == logs.end())
             entry = logs.find(0);
@@ -107,7 +107,7 @@ uint64_t InMemoryLogStore::term_at(uint64_t index)
 {
     uint64_t term = 0;
     {
-        std::lock_guard<std::mutex> l(logs_lock);
+        std::lock_guard l(logs_lock);
         auto entry = logs.find(index);
         if (entry == logs.end())
             entry = logs.find(0);
@@ -125,7 +125,7 @@ nuraft::ptr<nuraft::buffer> InMemoryLogStore::pack(uint64_t index, Int32 cnt)
     {
         ptr<log_entry> le = nullptr;
         {
-            std::lock_guard<std::mutex> l(logs_lock);
+            std::lock_guard l(logs_lock);
             le = logs[ii];
         }
         assert(le.get());
@@ -162,13 +162,13 @@ void InMemoryLogStore::apply_pack(uint64_t index, nuraft::buffer & pack)
 
         nuraft::ptr<nuraft::log_entry> le = nuraft::log_entry::deserialize(*buf_local);
         {
-            std::lock_guard<std::mutex> l(logs_lock);
+            std::lock_guard l(logs_lock);
             logs[cur_idx] = le;
         }
     }
 
     {
-        std::lock_guard<std::mutex> l(logs_lock);
+        std::lock_guard l(logs_lock);
         auto entry = logs.upper_bound(0);
         if (entry != logs.end())
             start_idx = entry->first;
@@ -179,7 +179,7 @@ void InMemoryLogStore::apply_pack(uint64_t index, nuraft::buffer & pack)
 
 bool InMemoryLogStore::compact(uint64_t last_log_index)
 {
-    std::lock_guard<std::mutex> l(logs_lock);
+    std::lock_guard l(logs_lock);
     for (uint64_t ii = start_idx; ii <= last_log_index; ++ii)
     {
         auto entry = logs.find(ii);

src/Coordination/KeeperStateMachine.cpp

@@ -341,7 +341,7 @@ void KeeperStateMachine::rollbackRequest(const KeeperStorage::RequestForSession
 nuraft::ptr<nuraft::snapshot> KeeperStateMachine::last_snapshot()
 {
     /// Just return the latest snapshot.
-    std::lock_guard<std::mutex> lock(snapshots_lock);
+    std::lock_guard lock(snapshots_lock);
     return latest_snapshot_meta;
 }
 

src/Coordination/SummingStateMachine.cpp

@@ -37,7 +37,7 @@ nuraft::ptr<nuraft::buffer> SummingStateMachine::commit(const uint64_t log_idx,
 
 bool SummingStateMachine::apply_snapshot(nuraft::snapshot & s)
 {
-    std::lock_guard<std::mutex> ll(snapshots_lock);
+    std::lock_guard ll(snapshots_lock);
     auto entry = snapshots.find(s.get_last_log_idx());
     if (entry == snapshots.end())
         return false;
@@ -50,7 +50,7 @@ bool SummingStateMachine::apply_snapshot(nuraft::snapshot & s)
 nuraft::ptr<nuraft::snapshot> SummingStateMachine::last_snapshot()
 {
     // Just return the latest snapshot.
-    std::lock_guard<std::mutex> ll(snapshots_lock);
+    std::lock_guard ll(snapshots_lock);
     auto entry = snapshots.rbegin();
     if (entry == snapshots.rend())
         return nullptr;
@@ -100,7 +100,7 @@ void SummingStateMachine::save_logical_snp_obj(
         nuraft::buffer_serializer bs(data);
         int64_t local_value = static_cast<int64_t>(bs.get_u64());
 
-        std::lock_guard<std::mutex> ll(snapshots_lock);
+        std::lock_guard ll(snapshots_lock);
         auto entry = snapshots.find(s.get_last_log_idx());
         assert(entry != snapshots.end());
         entry->second->value = local_value;
@@ -118,7 +118,7 @@ int SummingStateMachine::read_logical_snp_obj(
 {
     nuraft::ptr<SingleValueSnapshotContext> ctx = nullptr;
     {
-        std::lock_guard<std::mutex> ll(snapshots_lock);
+        std::lock_guard ll(snapshots_lock);
         auto entry = snapshots.find(s.get_last_log_idx());
         if (entry == snapshots.end())
         {
@@ -155,7 +155,7 @@ void SummingStateMachine::create_snapshot(
     nuraft::async_result<bool>::handler_type & when_done)
 {
     {
-        std::lock_guard<std::mutex> ll(snapshots_lock);
+        std::lock_guard ll(snapshots_lock);
         createSnapshotInternal(s);
     }
     nuraft::ptr<std::exception> except(nullptr);

src/Databases/MySQL/DatabaseMySQL.cpp

@@ -82,7 +82,7 @@ DatabaseMySQL::DatabaseMySQL(
 
 bool DatabaseMySQL::empty() const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     fetchTablesIntoLocalCache(getContext());
 
@@ -99,7 +99,7 @@ bool DatabaseMySQL::empty() const
 DatabaseTablesIteratorPtr DatabaseMySQL::getTablesIterator(ContextPtr local_context, const FilterByNameFunction & filter_by_table_name) const
 {
     Tables tables;
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     fetchTablesIntoLocalCache(local_context);
 
@@ -117,7 +117,7 @@ bool DatabaseMySQL::isTableExist(const String & name, ContextPtr local_context)
 
 StoragePtr DatabaseMySQL::tryGetTable(const String & mysql_table_name, ContextPtr local_context) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     fetchTablesIntoLocalCache(local_context);
 
@@ -129,7 +129,7 @@ StoragePtr DatabaseMySQL::tryGetTable(const String & mysql_table_name, ContextPt
 
 ASTPtr DatabaseMySQL::getCreateTableQueryImpl(const String & table_name, ContextPtr local_context, bool throw_on_error) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     fetchTablesIntoLocalCache(local_context);
 
@@ -175,7 +175,7 @@ ASTPtr DatabaseMySQL::getCreateTableQueryImpl(const String & table_name, Context
 
 time_t DatabaseMySQL::getObjectMetadataModificationTime(const String & table_name) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     fetchTablesIntoLocalCache(getContext());
 
@@ -360,7 +360,7 @@ void DatabaseMySQL::cleanOutdatedTables()
 
 void DatabaseMySQL::attachTable(ContextPtr /* context_ */, const String & table_name, const StoragePtr & storage, const String &)
 {
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
 
     if (!local_tables_cache.contains(table_name))
         throw Exception(ErrorCodes::UNKNOWN_TABLE, "Cannot attach table {}.{} because it does not exist.",
@@ -383,7 +383,7 @@ void DatabaseMySQL::attachTable(ContextPtr /* context_ */, const String & table_
 
 StoragePtr DatabaseMySQL::detachTable(ContextPtr /* context */, const String & table_name)
 {
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
 
     if (remove_or_detach_tables.contains(table_name))
         throw Exception(ErrorCodes::TABLE_IS_DROPPED, "Table {}.{} is dropped",
@@ -405,7 +405,7 @@ String DatabaseMySQL::getMetadataPath() const
 void DatabaseMySQL::loadStoredObjects(ContextMutablePtr, LoadingStrictnessLevel /*mode*/, bool /* skip_startup_tables */)
 {
 
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
     fs::directory_iterator iter(getMetadataPath());
 
     for (fs::directory_iterator end; iter != end; ++iter)
@@ -421,7 +421,7 @@ void DatabaseMySQL::loadStoredObjects(ContextMutablePtr, LoadingStrictnessLevel
 
 void DatabaseMySQL::detachTablePermanently(ContextPtr, const String & table_name)
 {
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
 
     fs::path remove_flag = fs::path(getMetadataPath()) / (escapeForFileName(table_name) + suffix);
 

src/Databases/PostgreSQL/DatabasePostgreSQL.cpp

@@ -76,7 +76,7 @@ String DatabasePostgreSQL::formatTableName(const String & table_name, bool quote
 
 bool DatabasePostgreSQL::empty() const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     auto connection_holder = pool->get();
     auto tables_list = fetchPostgreSQLTablesList(connection_holder->get(), configuration.schema);
@@ -91,7 +91,7 @@ bool DatabasePostgreSQL::empty() const
 
 DatabaseTablesIteratorPtr DatabasePostgreSQL::getTablesIterator(ContextPtr local_context, const FilterByNameFunction & /* filter_by_table_name */) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     Tables tables;
 
     /// Do not allow to throw here, because this might be, for example, a query to system.tables.
@@ -154,7 +154,7 @@ bool DatabasePostgreSQL::checkPostgresTable(const String & table_name) const
 
 bool DatabasePostgreSQL::isTableExist(const String & table_name, ContextPtr /* context */) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     if (detached_or_dropped.contains(table_name))
         return false;
@@ -165,7 +165,7 @@ bool DatabasePostgreSQL::isTableExist(const String & table_name, ContextPtr /* c
 
 StoragePtr DatabasePostgreSQL::tryGetTable(const String & table_name, ContextPtr local_context) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     if (!detached_or_dropped.contains(table_name))
         return fetchTable(table_name, local_context, false);
@@ -210,7 +210,7 @@ StoragePtr DatabasePostgreSQL::fetchTable(const String & table_name, ContextPtr,
 
 void DatabasePostgreSQL::attachTable(ContextPtr /* context_ */, const String & table_name, const StoragePtr & storage, const String &)
 {
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
 
     if (!checkPostgresTable(table_name))
         throw Exception(ErrorCodes::UNKNOWN_TABLE,
@@ -235,7 +235,7 @@ void DatabasePostgreSQL::attachTable(ContextPtr /* context_ */, const String & t
 
 StoragePtr DatabasePostgreSQL::detachTable(ContextPtr /* context_ */, const String & table_name)
 {
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
 
     if (detached_or_dropped.contains(table_name))
         throw Exception(ErrorCodes::TABLE_IS_DROPPED, "Cannot detach table {}. It is already dropped/detached", getTableNameForLogs(table_name));
@@ -266,7 +266,7 @@ void DatabasePostgreSQL::createTable(ContextPtr local_context, const String & ta
 
 void DatabasePostgreSQL::dropTable(ContextPtr, const String & table_name, bool /* sync */)
 {
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
 
     if (!checkPostgresTable(table_name))
         throw Exception(ErrorCodes::UNKNOWN_TABLE, "Cannot drop table {} because it does not exist", getTableNameForLogs(table_name));
@@ -293,7 +293,7 @@ void DatabasePostgreSQL::drop(ContextPtr /*context*/)
 void DatabasePostgreSQL::loadStoredObjects(ContextMutablePtr /* context */, LoadingStrictnessLevel /*mode*/, bool /* skip_startup_tables */)
 {
     {
-        std::lock_guard<std::mutex> lock{mutex};
+        std::lock_guard lock{mutex};
         fs::directory_iterator iter(getMetadataPath());
 
         /// Check for previously dropped tables
@@ -314,7 +314,7 @@ void DatabasePostgreSQL::loadStoredObjects(ContextMutablePtr /* context */, Load
 
 void DatabasePostgreSQL::removeOutdatedTables()
 {
-    std::lock_guard<std::mutex> lock{mutex};
+    std::lock_guard lock{mutex};
     auto connection_holder = pool->get();
     auto actual_tables = fetchPostgreSQLTablesList(connection_holder->get(), configuration.schema);
 

src/Databases/SQLite/DatabaseSQLite.cpp

@@ -40,14 +40,14 @@ DatabaseSQLite::DatabaseSQLite(
 
 bool DatabaseSQLite::empty() const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     return fetchTablesList().empty();
 }
 
 
 DatabaseTablesIteratorPtr DatabaseSQLite::getTablesIterator(ContextPtr local_context, const IDatabase::FilterByNameFunction &) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     Tables tables;
     auto table_names = fetchTablesList();
@@ -120,14 +120,14 @@ bool DatabaseSQLite::checkSQLiteTable(const String & table_name) const
 
 bool DatabaseSQLite::isTableExist(const String & table_name, ContextPtr) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     return checkSQLiteTable(table_name);
 }
 
 
 StoragePtr DatabaseSQLite::tryGetTable(const String & table_name, ContextPtr local_context) const
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     return fetchTable(table_name, local_context, false);
 }
 
@@ -175,7 +175,7 @@ ASTPtr DatabaseSQLite::getCreateTableQueryImpl(const String & table_name, Contex
 {
     StoragePtr storage;
     {
-        std::lock_guard<std::mutex> lock(mutex);
+        std::lock_guard lock(mutex);
         storage = fetchTable(table_name, local_context, false);
     }
     if (!storage)

src/Interpreters/Context.cpp

@@ -1289,7 +1289,7 @@ void Context::addQueryAccessInfo(
     if (isGlobalContext())
         throw Exception(ErrorCodes::LOGICAL_ERROR, "Global context cannot have query access info");
 
-    std::lock_guard<std::mutex> lock(query_access_info.mutex);
+    std::lock_guard lock(query_access_info.mutex);
     query_access_info.databases.emplace(quoted_database_name);
     query_access_info.tables.emplace(full_quoted_table_name);
     for (const auto & column_name : column_names)

src/Interpreters/ExternalLoaderXMLConfigRepository.cpp

@@ -34,7 +34,7 @@ std::set<std::string> ExternalLoaderXMLConfigRepository::getAllLoadablesDefiniti
     std::unordered_set<std::string> patterns_copy;
 
     {
-        std::lock_guard<std::mutex> lock(patterns_mutex);
+        std::lock_guard lock(patterns_mutex);
         patterns_copy = patterns;
     }
 
@@ -71,7 +71,7 @@ std::set<std::string> ExternalLoaderXMLConfigRepository::getAllLoadablesDefiniti
 
 void ExternalLoaderXMLConfigRepository::updatePatterns(const std::unordered_set<std::string> & patterns_)
 {
-    std::lock_guard<std::mutex> lock(patterns_mutex);
+    std::lock_guard lock(patterns_mutex);
 
     if (patterns == patterns_)
         return;

src/Interpreters/GraceHashJoin.cpp

@@ -52,7 +52,7 @@ namespace
 
         Block read()
         {
-            std::lock_guard<std::mutex> lock(mutex);
+            std::lock_guard lock(mutex);
 
             if (eof)
                 return {};

src/Interpreters/JIT/CHJIT.cpp

@@ -352,7 +352,7 @@ CHJIT::~CHJIT() = default;
 
 CHJIT::CompiledModule CHJIT::compileModule(std::function<void (llvm::Module &)> compile_function)
 {
-    std::lock_guard<std::mutex> lock(jit_lock);
+    std::lock_guard lock(jit_lock);
 
     auto module = createModuleForCompilation();
     compile_function(*module);
@@ -426,7 +426,7 @@ CHJIT::CompiledModule CHJIT::compileModule(std::unique_ptr<llvm::Module> module)
 
 void CHJIT::deleteCompiledModule(const CHJIT::CompiledModule & module)
 {
-    std::lock_guard<std::mutex> lock(jit_lock);
+    std::lock_guard lock(jit_lock);
 
     auto module_it = module_identifier_to_memory_manager.find(module.identifier);
     if (module_it == module_identifier_to_memory_manager.end())
@@ -438,7 +438,7 @@ void CHJIT::deleteCompiledModule(const CHJIT::CompiledModule & module)
 
 void CHJIT::registerExternalSymbol(const std::string & symbol_name, void * address)
 {
-    std::lock_guard<std::mutex> lock(jit_lock);
+    std::lock_guard lock(jit_lock);
     symbol_resolver->registerSymbol(symbol_name, address);
 }
 

src/Loggers/OwnSplitChannel.cpp

@@ -137,7 +137,7 @@ void OwnSplitChannel::logSplit(const Poco::Message & msg)
 
         std::shared_ptr<TextLog> text_log_locked{};
         {
-            std::lock_guard<std::mutex> lock(text_log_mutex);
+            std::lock_guard lock(text_log_mutex);
             text_log_locked = text_log.lock();
         }
         if (text_log_locked)
@@ -155,7 +155,7 @@ void OwnSplitChannel::addChannel(Poco::AutoPtr<Poco::Channel> channel, const std
 #ifndef WITHOUT_TEXT_LOG
 void OwnSplitChannel::addTextLog(std::shared_ptr<DB::TextLog> log, int max_priority)
 {
-    std::lock_guard<std::mutex> lock(text_log_mutex);
+    std::lock_guard lock(text_log_mutex);
     text_log = log;
     text_log_max_priority.store(max_priority, std::memory_order_relaxed);
 }

src/Processors/Formats/Impl/ParallelFormattingOutputFormat.cpp

@@ -15,7 +15,7 @@ namespace DB
         collector_finished.wait();
 
         {
-            std::lock_guard<std::mutex> lock(collector_thread_mutex);
+            std::lock_guard lock(collector_thread_mutex);
             if (collector_thread.joinable())
                 collector_thread.join();
         }
@@ -80,7 +80,7 @@ namespace DB
         }
 
         {
-            std::lock_guard<std::mutex> lock(collector_thread_mutex);
+            std::lock_guard lock(collector_thread_mutex);
             if (collector_thread.joinable())
                 collector_thread.join();
         }
@@ -137,7 +137,7 @@ namespace DB
 
                 {
                     /// Notify other threads.
-                    std::lock_guard<std::mutex> lock(mutex);
+                    std::lock_guard lock(mutex);
                     unit.status = READY_TO_INSERT;
                     writer_condvar.notify_all();
                 }
@@ -227,7 +227,7 @@ namespace DB
             unit.actual_memory_size = out_buffer.getActualSize();
 
             {
-                std::lock_guard<std::mutex> lock(mutex);
+                std::lock_guard lock(mutex);
                 unit.status = READY_TO_READ;
                 collector_condvar.notify_all();
             }

src/Processors/Formats/Impl/ParallelParsingInputFormat.h

@@ -292,7 +292,7 @@ private:
 
         {
             /// Additionally notify condvars
-            std::lock_guard<std::mutex> lock(mutex);
+            std::lock_guard lock(mutex);
             segmentator_condvar.notify_all();
             reader_condvar.notify_all();
         }

src/Processors/QueryPlan/CreateSetAndFilterOnTheFlyStep.cpp

@@ -62,7 +62,7 @@ public:
     {
         assert(!rhs_ports.first->isConnected() && !rhs_ports.second->isConnected());
 
-        std::lock_guard<std::mutex> lock(mux);
+        std::lock_guard lock(mux);
         if (input_port || output_port)
         {
             assert(input_port && output_port);

src/Processors/Sources/ShellCommandSource.cpp

@@ -274,7 +274,7 @@ namespace
                     }
                     catch (...)
                     {
-                        std::lock_guard<std::mutex> lock(send_data_lock);
+                        std::lock_guard lock(send_data_lock);
                         exception_during_send_data = std::current_exception();
                     }
                 });
@@ -387,7 +387,7 @@ namespace
 
         void rethrowExceptionDuringSendDataIfNeeded()
         {
-            std::lock_guard<std::mutex> lock(send_data_lock);
+            std::lock_guard lock(send_data_lock);
             if (exception_during_send_data)
             {
                 command_is_invalid = true;

src/Server/PrometheusMetricsWriter.cpp

@@ -125,7 +125,7 @@ void PrometheusMetricsWriter::write(WriteBuffer & wb) const
     {
         for (size_t i = 0, end = CurrentStatusInfo::end(); i < end; ++i)
         {
-            std::lock_guard<std::mutex> lock(CurrentStatusInfo::locks[static_cast<CurrentStatusInfo::Status>(i)]);
+            std::lock_guard lock(CurrentStatusInfo::locks[static_cast<CurrentStatusInfo::Status>(i)]);
             std::string metric_name{CurrentStatusInfo::getName(static_cast<CurrentStatusInfo::Status>(i))};
             std::string metric_doc{CurrentStatusInfo::getDocumentation(static_cast<CurrentStatusInfo::Status>(i))};
 

src/Storages/FileLog/FileLogDirectoryWatcher.cpp

@@ -12,7 +12,7 @@ FileLogDirectoryWatcher::FileLogDirectoryWatcher(const std::string & path_, Stor
 
 FileLogDirectoryWatcher::Events FileLogDirectoryWatcher::getEventsAndReset()
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     Events res;
     res.swap(events);
     return res;
@@ -20,7 +20,7 @@ FileLogDirectoryWatcher::Events FileLogDirectoryWatcher::getEventsAndReset()
 
 FileLogDirectoryWatcher::Error FileLogDirectoryWatcher::getErrorAndReset()
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     Error old_error = error;
     error = {};
     return old_error;
@@ -33,7 +33,7 @@ const std::string & FileLogDirectoryWatcher::getPath() const
 
 void FileLogDirectoryWatcher::onItemAdded(DirectoryWatcherBase::DirectoryEvent ev)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     EventInfo info{ev.event, "onItemAdded"};
     std::string event_path = ev.path;
@@ -51,7 +51,7 @@ void FileLogDirectoryWatcher::onItemAdded(DirectoryWatcherBase::DirectoryEvent e
 
 void FileLogDirectoryWatcher::onItemRemoved(DirectoryWatcherBase::DirectoryEvent ev)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     EventInfo info{ev.event, "onItemRemoved"};
     std::string event_path = ev.path;
@@ -74,7 +74,7 @@ void FileLogDirectoryWatcher::onItemRemoved(DirectoryWatcherBase::DirectoryEvent
 /// because it is equal to just record and handle one MODIY event
 void FileLogDirectoryWatcher::onItemModified(DirectoryWatcherBase::DirectoryEvent ev)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     auto event_path = ev.path;
     EventInfo info{ev.event, "onItemModified"};
@@ -97,7 +97,7 @@ void FileLogDirectoryWatcher::onItemModified(DirectoryWatcherBase::DirectoryEven
 
 void FileLogDirectoryWatcher::onItemMovedFrom(DirectoryWatcherBase::DirectoryEvent ev)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     EventInfo info{ev.event, "onItemMovedFrom"};
     std::string event_path = ev.path;
@@ -114,7 +114,7 @@ void FileLogDirectoryWatcher::onItemMovedFrom(DirectoryWatcherBase::DirectoryEve
 
 void FileLogDirectoryWatcher::onItemMovedTo(DirectoryWatcherBase::DirectoryEvent ev)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
 
     EventInfo info{ev.event, "onItemMovedTo"};
     std::string event_path = ev.path;
@@ -131,7 +131,7 @@ void FileLogDirectoryWatcher::onItemMovedTo(DirectoryWatcherBase::DirectoryEvent
 
 void FileLogDirectoryWatcher::onError(Exception e)
 {
-    std::lock_guard<std::mutex> lock(mutex);
+    std::lock_guard lock(mutex);
     LOG_ERROR(log, "Error happened during watching directory: {}", error.error_msg);
     error.has_error = true;
     error.error_msg = e.message();

src/Storages/FileLog/StorageFileLog.cpp

@@ -312,7 +312,7 @@ Pipe StorageFileLog::read(
     if (mv_attached)
         throw Exception(ErrorCodes::QUERY_NOT_ALLOWED, "Cannot read from StorageFileLog with attached materialized views");
 
-    std::lock_guard<std::mutex> lock(file_infos_mutex);
+    std::lock_guard lock(file_infos_mutex);
     if (running_streams)
     {
         throw Exception(ErrorCodes::CANNOT_SELECT, "Another select query is running on this table, need to wait it finish.");
@@ -659,7 +659,7 @@ void StorageFileLog::threadFunc()
 
 bool StorageFileLog::streamToViews()
 {
-    std::lock_guard<std::mutex> lock(file_infos_mutex);
+    std::lock_guard lock(file_infos_mutex);
     if (running_streams)
     {
         LOG_INFO(log, "Another select query is running on this table, need to wait it finish.");

src/Storages/Hive/StorageHive.cpp

@@ -856,7 +856,7 @@ HiveFiles StorageHive::collectHiveFiles(
                         = collectHiveFilesFromPartition(partition, query_info, hive_table_metadata, fs, context_, prune_level);
                     if (!hive_files_in_partition.empty())
                     {
-                        std::lock_guard<std::mutex> lock(hive_files_mutex);
+                        std::lock_guard lock(hive_files_mutex);
                         hit_parttions_num += 1;
                         if (hive_max_query_partitions > 0 && hit_parttions_num > hive_max_query_partitions)
                         {
@@ -882,7 +882,7 @@ HiveFiles StorageHive::collectHiveFiles(
                     auto hive_file = getHiveFileIfNeeded(file_info, {}, query_info, hive_table_metadata, context_, prune_level);
                     if (hive_file)
                     {
-                        std::lock_guard<std::mutex> lock(hive_files_mutex);
+                        std::lock_guard lock(hive_files_mutex);
                         hive_files.push_back(hive_file);
                     }
                 });

src/Storages/MergeTree/ReplicatedMergeTreeQueue.cpp

@@ -2316,7 +2316,7 @@ bool ReplicatedMergeTreeMergePredicate::canMergeSinglePart(
         return false;
     }
 
-    std::lock_guard<std::mutex> lock(queue.state_mutex);
+    std::lock_guard lock(queue.state_mutex);
 
     /// We look for containing parts in queue.virtual_parts (and not in prev_virtual_parts) because queue.virtual_parts is newer
     /// and it is guaranteed that it will contain all merges assigned before this object is constructed.
@@ -2334,7 +2334,7 @@ bool ReplicatedMergeTreeMergePredicate::canMergeSinglePart(
 
 bool ReplicatedMergeTreeMergePredicate::partParticipatesInReplaceRange(const MergeTreeData::DataPartPtr & part, String * out_reason) const
 {
-    std::lock_guard<std::mutex> lock(queue.state_mutex);
+    std::lock_guard lock(queue.state_mutex);
     for (const auto & entry : queue.queue)
     {
         if (entry->type != ReplicatedMergeTreeLogEntry::REPLACE_RANGE)
@@ -2457,7 +2457,7 @@ bool ReplicatedMergeTreeMergePredicate::isGoingToBeDropped(const MergeTreePartIn
 
 String ReplicatedMergeTreeMergePredicate::getCoveringVirtualPart(const String & part_name) const
 {
-    std::lock_guard<std::mutex> lock(queue.state_mutex);
+    std::lock_guard lock(queue.state_mutex);
     return queue.virtual_parts.getContainingPart(MergeTreePartInfo::fromPartName(part_name, queue.format_version));
 }
 

src/Storages/StorageDictionary.cpp

@@ -208,13 +208,13 @@ void StorageDictionary::removeDictionaryConfigurationFromRepository()
 
 Poco::Timestamp StorageDictionary::getUpdateTime() const
 {
-    std::lock_guard<std::mutex> lock(dictionary_config_mutex);
+    std::lock_guard lock(dictionary_config_mutex);
     return update_time;
 }
 
 LoadablesConfigurationPtr StorageDictionary::getConfiguration() const
 {
-    std::lock_guard<std::mutex> lock(dictionary_config_mutex);
+    std::lock_guard lock(dictionary_config_mutex);
     return configuration;
 }
 
@@ -234,7 +234,7 @@ void StorageDictionary::renameInMemory(const StorageID & new_table_id)
     assert(old_table_id.uuid == new_table_id.uuid || move_to_atomic || move_to_ordinary);
 
     {
-        std::lock_guard<std::mutex> lock(dictionary_config_mutex);
+        std::lock_guard lock(dictionary_config_mutex);
 
         configuration->setString("dictionary.database", new_table_id.database_name);
         configuration->setString("dictionary.name", new_table_id.table_name);
@@ -301,7 +301,7 @@ void StorageDictionary::alter(const AlterCommands & params, ContextPtr alter_con
         dictionary_non_const->setDictionaryComment(new_comment);
     }
 
-    std::lock_guard<std::mutex> lock(dictionary_config_mutex);
+    std::lock_guard lock(dictionary_config_mutex);
     configuration->setString("dictionary.comment", new_comment);
 }
 

src/Storages/StorageMergeTree.cpp

@@ -732,7 +732,7 @@ CancellationCode StorageMergeTree::killMutation(const String & mutation_id)
     to_kill->removeFile();
     LOG_TRACE(log, "Cancelled part mutations and removed mutation file {}", mutation_id);
     {
-        std::lock_guard<std::mutex> lock(mutation_wait_mutex);
+        std::lock_guard lock(mutation_wait_mutex);
         mutation_wait_event.notify_all();
     }
 
@@ -1306,7 +1306,7 @@ size_t StorageMergeTree::clearOldMutations(bool truncate)
 
     std::vector<MergeTreeMutationEntry> mutations_to_delete;
     {
-        std::lock_guard<std::mutex> lock(currently_processing_in_background_mutex);
+        std::lock_guard lock(currently_processing_in_background_mutex);
 
         if (current_mutations_by_version.size() <= finished_mutations_to_keep)
             return 0;