database.h File Reference

#include "class.h"
#include "reference.h"
#include "file.h"

Classes
class	dbHeader
	Database header. More...
struct	dbMemoryStatistic
class	FixedSizeAllocator
struct	FixedSizeAllocator::Hole
class	dbMonitor
class	dbL2List
	Double linked list. More...
class	dbVisitedObject
class	dbDatabase
	Database class. More...
struct	dbDatabase::OpenParameters
	Structure to specify database open parameters. More...
struct	dbDatabase::dbLocation
class	dbSearchContext
	Search contrext used to pass information about search parameters to T-Tree and Hash table index implementations. More...
Typedefs
typedef unsigned(*	dbHashFunction )(byte *key, int type, int keylen)
Enumerations
enum	dbInternalObject {   dbTableRow,   dbPageObjectMarker,   dbTtreeMarker,   dbTtreeNodeMarker,   dbHashTableMarker,   dbHashTableItemMarker,   dbRtreeMarker,   dbRtreePageMarker,   dbInternalObjectMarker = 7 }
	Internal objects tags. More...
enum	dbPredefinedIds {   dbInvalidId,   dbMetaTableId,   dbBitmapId,   dbFirstUserId = dbBitmapId + dbBitmapPages }
	Predefined object identifiers. More...
Functions
template<class T>
dbReference< T >	insert (T const &record)
Variables
BEGIN_FASTDB_NAMESPACE const size_t	dbDefaultInitDatabaseSize = 1024*1024
	Default size of memory mapping object for the database (bytes).
const size_t	dbDefaultInitIndexSize = 512*1024
	Default initial index size (number of objects).
const size_t	dbDefaultExtensionQuantum = 4*1024*1024
	Quantum of extension of allocated memory.
const unsigned	dbMaxParallelSearchThreads = 64
	Maximal number of threads which can be spawned to perform parallel sequentila search.
const int	dbDefaultParallelScanThreshold = 1000
const int	dbDefaultPollInterval = 10*1000
const int	dbWaitReadyTimeout = 60*1000
const int	dbWaitStatusTimeout = 60*1000
const int	dbRecoveryConnectionAttempts = 3
const int	dbStartupConnectionAttempts = 60
const int	dbReplicationWriteTimeout = 60*1000
const int	dbMaxAsyncRecoveryIterations = 1000
const offs_t	dbFreeHandleMarker = (offs_t)1 << (sizeof(offs_t)*8 - 1)
const size_t	dbAllocationQuantumBits = 4
const size_t	dbAllocationQuantum = 1 << dbAllocationQuantumBits
const size_t	dbPageBits = 12
const size_t	dbPageSize = 1 << dbPageBits
const size_t	dbIdsPerPage = dbPageSize / sizeof(oid_t)
const size_t	dbHandlesPerPage = dbPageSize / sizeof(offs_t)
const size_t	dbHandleBits = 1 + sizeof(offs_t)/4
const size_t	dbBitmapSegmentBits = dbPageBits + 3 + dbAllocationQuantumBits
const size_t	dbBitmapSegmentSize = 1 << dbBitmapSegmentBits
const size_t	dbBitmapPages = 1 << (dbDatabaseOffsetBits-dbBitmapSegmentBits)
const size_t	dbDirtyPageBitmapSize = 1 << (dbDatabaseOidBits-dbPageBits+dbHandleBits-3)
const size_t	dbDefaultSelectionLimit = 2000000000
const int	dbBMsearchThreshold = 512
const char	dbMatchAnyOneChar = '_'
const char	dbMatchAnySubstring = '%'
const int	dbMaxReaders = 64

---

Typedef Documentation

typedef unsigned(* dbHashFunction)(byte *key, int type, int keylen)

---

Enumeration Type Documentation

enum dbInternalObject

Internal objects tags.

Enumerator:

dbTableRow
dbPageObjectMarker
dbTtreeMarker
dbTtreeNodeMarker
dbHashTableMarker
dbHashTableItemMarker
dbRtreeMarker
dbRtreePageMarker
dbInternalObjectMarker

enum dbPredefinedIds

Predefined object identifiers.

Enumerator:

dbInvalidId
dbMetaTableId
dbBitmapId
dbFirstUserId

---

Function Documentation

dbReference<T> insert

(

T const &

record

)

[inline]

---

Variable Documentation

BEGIN_FASTDB_NAMESPACE const size_t dbDefaultInitDatabaseSize = 1024*1024

Default size of memory mapping object for the database (bytes).

const size_t dbDefaultInitIndexSize = 512*1024

Default initial index size (number of objects).

const size_t dbDefaultExtensionQuantum = 4*1024*1024

Quantum of extension of allocated memory.

const unsigned dbMaxParallelSearchThreads = 64

Maximal number of threads which can be spawned to perform parallel sequentila search.

const int dbDefaultParallelScanThreshold = 1000

const int dbDefaultPollInterval = 10*1000

const int dbWaitReadyTimeout = 60*1000

const int dbWaitStatusTimeout = 60*1000

const int dbRecoveryConnectionAttempts = 3

const int dbStartupConnectionAttempts = 60

const int dbReplicationWriteTimeout = 60*1000

const int dbMaxAsyncRecoveryIterations = 1000

const offs_t dbFreeHandleMarker = (offs_t)1 << (sizeof(offs_t)*8 - 1)

const size_t dbAllocationQuantumBits = 4

const size_t dbAllocationQuantum = 1 << dbAllocationQuantumBits

const size_t dbPageBits = 12

const size_t dbPageSize = 1 << dbPageBits

const size_t dbIdsPerPage = dbPageSize / sizeof(oid_t)

const size_t dbHandlesPerPage = dbPageSize / sizeof(offs_t)

const size_t dbHandleBits = 1 + sizeof(offs_t)/4

const size_t dbBitmapSegmentBits = dbPageBits + 3 + dbAllocationQuantumBits

const size_t dbBitmapSegmentSize = 1 << dbBitmapSegmentBits

const size_t dbBitmapPages = 1 << (dbDatabaseOffsetBits-dbBitmapSegmentBits)

const size_t dbDirtyPageBitmapSize = 1 << (dbDatabaseOidBits-dbPageBits+dbHandleBits-3)

const size_t dbDefaultSelectionLimit = 2000000000

const int dbBMsearchThreshold = 512

const char dbMatchAnyOneChar = '_'

const char dbMatchAnySubstring = '%'

const int dbMaxReaders = 64