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< InsertDataLockMgr >
static WriteLock	getWriteLockForTable (const Catalog_Namespace::Catalog &cat, const std::string &table_name)
static WriteLock	getWriteLockForTable (const ChunkKey table_key)
static ReadLock	getReadLockForTable (const Catalog_Namespace::Catalog &cat, const std::string &table_name)
static ReadLock	getReadLockForTable (const ChunkKey table_key)

Protected Member Functions
	InsertDataLockMgr ()
Protected Member Functions inherited from lockmgr::TableLockMgrImpl< InsertDataLockMgr >
	TableLockMgrImpl ()

Additional Inherited Members
Public Member Functions inherited from lockmgr::TableLockMgrImpl< InsertDataLockMgr >
MutexType *	getTableMutex (const ChunkKey table_key)
std::set< ChunkKey >	getLockedTables () const
Protected Attributes inherited from lockmgr::TableLockMgrImpl< InsertDataLockMgr >
std::mutex	map_mutex_
std::map< ChunkKey, std::unique_ptr< MutexType > >	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 55 of file LockMgr.h.

Constructor & Destructor Documentation

lockmgr::InsertDataLockMgr::InsertDataLockMgr ( )

inlineprotected

Definition at line 63 of file LockMgr.h.

{}

Member Function Documentation

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

inlinestatic

Definition at line 57 of file LockMgr.h.

                                       {
    static InsertDataLockMgr insert_data_lock_mgr;
    return insert_data_lock_mgr;
  }

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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