lockmgr::InsertDataLockMgr Class Reference

Prevents simultaneous inserts into the same table. To allow concurrent Insert/Select queries, Insert queries only obtain a write lock on table data when checkpointing (flushing chunks to disk). Inserts/Data load will take an exclusive (write) lock to ensure only one insert proceeds on each table at a time. More...

#include <LockMgr.h>

Inheritance diagram for lockmgr::InsertDataLockMgr:

Collaboration diagram for lockmgr::InsertDataLockMgr:

Static Public Member Functions
static InsertDataLockMgr &	instance ()
Static Public Member Functions inherited from lockmgr::TableLockMgrImpl< T >
static T &	instance ()
static WriteLock	getWriteLockForTable (const Catalog_Namespace::Catalog &cat, const std::string &table_name)
static WriteLock	getWriteLockForTable (const ChunkKey table_key)
static ReadLock	getReadLockForTable (Catalog_Namespace::Catalog &cat, const std::string &table_name)
static ReadLock	getReadLockForTable (const ChunkKey table_key)

Static Protected Attributes
static constexpr std::string_view	kind = "insert"

Friends
class	TableLockMgrImpl< InsertDataLockMgr >

Additional Inherited Members
Public Member Functions inherited from lockmgr::TableLockMgrImpl< T >
virtual	~TableLockMgrImpl ()=default
virtual MutexTracker *	getTableMutex (const ChunkKey table_key)
std::set< ChunkKey >	getLockedTables () const
Protected Member Functions inherited from lockmgr::TableLockMgrImpl< T >
	TableLockMgrImpl ()
virtual std::unique_ptr < heavyai::DistributedSharedMutex >	getClusterTableMutex (const ChunkKey table_key)
Protected Attributes inherited from lockmgr::TableLockMgrImpl< T >
std::mutex	map_mutex_
std::map< ChunkKey, std::unique_ptr< MutexTracker > >	table_mutex_map_

Detailed Description

Prevents simultaneous inserts into the same table. To allow concurrent Insert/Select queries, Insert queries only obtain a write lock on table data when checkpointing (flushing chunks to disk). Inserts/Data load will take an exclusive (write) lock to ensure only one insert proceeds on each table at a time.

Definition at line 56 of file LockMgr.h.

Member Function Documentation

static InsertDataLockMgr& lockmgr::InsertDataLockMgr::instance ( )

inlinestatic

Definition at line 58 of file LockMgr.h.

                                       {
    static InsertDataLockMgr insert_data_lock_mgr;
    return insert_data_lock_mgr;
  }

Friends And Related Function Documentation

friend class TableLockMgrImpl< InsertDataLockMgr >

friend

Definition at line 64 of file LockMgr.h.

Member Data Documentation

constexpr std::string_view lockmgr::InsertDataLockMgr::kind = "insert"

inlinestaticprotected

Definition at line 65 of file LockMgr.h.

Referenced by TableFunctionsFactory_linker.BaseGenerateFiles::_get_filename(), heavydb.serialized_result_set.ttypes.TTargetInfo::read(), and heavydb.serialized_result_set.ttypes.TTargetInfo::write().

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The documentation for this class was generated from the following file:

• /home/jenkins-slave/workspace/core-os-doxygen/LockMgr/LockMgr.h