FileManager_private.h File Reference

#include "FileManager.h"

Go to the source code of this file.

Classes
struct	taco::MetaPageHeaderData
	This is a truncated and private version of PageHeaderData. More...
struct	taco::FreePageList
struct	taco::FMMetaPageData
struct	taco::FileDirectoryData
struct	taco::RegularFileMetaPageData

Namespaces
	taco

Macros
#define	DataFileNameLength   3
	The length of the file name of main data files. More...

Functions
constexpr FileId	taco::FileIdGetDir1Offset (FileId fid)
constexpr FileId	taco::FileIdGetDir2Offset (FileId fid)
constexpr uint64_t	taco::PageNumberGetDataFileId (PageNumber pid)
constexpr PageNumber	taco::PageNumberGetDataFilePageId (PageNumber pid)
constexpr PageNumber	taco::DataFileIdAndPageIdGetPageNumber (uint64_t fsfileid, PageNumber fspid)

Variables
constexpr uint64_t	taco::DBFILE_MAGIC = 0xdefabc1221cbafedul
constexpr PageNumber	taco::PENDING_CREATION_PID = RESERVED_PID
constexpr PageNumber	taco::FM_META_PID = INVALID_PID
	The FM meta page is always the first page in the file. More...
constexpr PageNumber	taco::PageGroupSize = 64
	Size of allocation in pages. More...
constexpr size_t	taco::MaxFileSize = (size_t) 64 * 1024 * 1024 * 1024
	Maximum size of a single data file. More...
constexpr PageNumber	taco::MaxNumPagesPerFile = MaxFileSize / PAGE_SIZE
	Maximum number of pages in a single data file. More...
constexpr uint64_t	taco::MaxNumDataFiles
	Maximum number of data files. More...

Macro Definition Documentation

DataFileNameLength

#define DataFileNameLength   3

The length of the file name of main data files.

Each name is a hexadecimal nummber of this length. That means we can have at most 4096 data files in a single directory. This is aribitrarily chosen, but should be more than enough.