Header Constants (moved from fsp0fsp.c)

Classes
struct	xdes_mem_t
struct	fsp_header_mem_t
	In-memory representation of the fsp_header_t file structure. More...

Typedefs
typedef byte	fsp_header_t
typedef byte	xdes_t

Functions
bool	xdes_state_is_valid (ulint state)
	Check if the state of extent descriptor is valid. More...
std::ostream &	operator<< (std::ostream &out, const xdes_mem_t &obj)
std::ostream &	operator<< (std::ostream &out, const fsp_header_mem_t &obj)

Variables
std::vector< space_id_t >	flag_mismatch_spaces
constexpr uint32_t	FSP_HEADER_OFFSET = FIL_PAGE_DATA
	Offset of the space header within a file page. More...
constexpr uint32_t	FSP_SDI_HEADER_LEN = 8
	The number of bytes required to store SDI root page number(4) and SDI version(4) at Page 0. More...
constexpr uint32_t	FSP_SPACE_ID = 0
	space id More...
constexpr uint32_t	FSP_NOT_USED = 4
	this field contained a value up to which we know that the modifications in the database have been flushed to the file space; not used now More...
constexpr uint32_t	FSP_SIZE = 8
	Current size of the space in pages. More...
constexpr uint32_t	FSP_FREE_LIMIT = 12
	Minimum page number for which the free list has not been initialized: the pages >= this limit are, bydefinition, free; note that in a single-table tablespace where size < 64 pages, this number is 64, i.e.,we have initialized the space about the first extent, but have not physically allocated those pages to thefile. More...
constexpr uint32_t	FSP_SPACE_FLAGS = 16
	fsp_space_t.flags, similar to dict_table_t::flags More...
constexpr uint32_t	FSP_FRAG_N_USED = 20
	number of used pages in the FSP_FREE_FRAG list More...
constexpr uint32_t	FSP_FREE = 24
	list of free extents More...
constexpr uint32_t	FSP_FREE_FRAG = 24 + FLST_BASE_NODE_SIZE
	list of partially free extents not belonging to any segment More...
constexpr uint32_t	FSP_FULL_FRAG = 24 + 2 * FLST_BASE_NODE_SIZE
	list of full extents not belonging to any segment More...
constexpr uint32_t	FSP_SEG_ID = 24 + 3 * FLST_BASE_NODE_SIZE
	8 bytes which give the first unused segment id More...
constexpr uint32_t	FSP_SEG_INODES_FULL = 32 + 3 * FLST_BASE_NODE_SIZE
	list of pages containing segment headers, where all the segment inode slots are reserved More...
constexpr uint32_t	FSP_SEG_INODES_FREE = 32 + 4 * FLST_BASE_NODE_SIZE
	list of pages containing segment headers, where not all the segment header slots are reserved More...
constexpr uint32_t	FSP_HEADER_SIZE = 32 + 5 * FLST_BASE_NODE_SIZE
constexpr uint32_t	FSP_FREE_ADD = 4
	This many free extents are added to the free list from above FSP_FREE_LIMIT at a time. More...

Detailed Description

Typedef Documentation

fsp_header_t

typedef byte fsp_header_t

xdes_t

typedef byte xdes_t

Function Documentation

operator<<() [1/2]

std::ostream & operator<< ( std::ostream &  out, const fsp_header_mem_t &  obj  )

inline

operator<<() [2/2]

std::ostream & operator<< ( std::ostream &  out, const xdes_mem_t &  obj  )

inline

xdes_state_is_valid()

bool xdes_state_is_valid

(

ulint

state

)

Check if the state of extent descriptor is valid.

Parameters

[in]

state

the extent descriptor state

Returns

true if state is valid, false otherwise

Variable Documentation

flag_mismatch_spaces

std::vector<space_id_t> flag_mismatch_spaces

extern

FSP_FRAG_N_USED

constexpr uint32_t FSP_FRAG_N_USED = 20

constexpr

number of used pages in the FSP_FREE_FRAG list

FSP_FREE

constexpr uint32_t FSP_FREE = 24

constexpr

list of free extents

FSP_FREE_ADD

constexpr uint32_t FSP_FREE_ADD = 4

constexpr

This many free extents are added to the free list from above FSP_FREE_LIMIT at a time.

FSP_FREE_FRAG

constexpr uint32_t FSP_FREE_FRAG = 24 + FLST_BASE_NODE_SIZE

constexpr

list of partially free extents not belonging to any segment

FSP_FREE_LIMIT

constexpr uint32_t FSP_FREE_LIMIT = 12

constexpr

Minimum page number for which the free list has not been initialized: the pages >= this limit are, bydefinition, free; note that in a single-table tablespace where size < 64 pages, this number is 64, i.e.,we have initialized the space about the first extent, but have not physically allocated those pages to thefile.

FSP_FULL_FRAG

constexpr uint32_t FSP_FULL_FRAG = 24 + 2 * FLST_BASE_NODE_SIZE

constexpr

list of full extents not belonging to any segment

FSP_HEADER_OFFSET

constexpr uint32_t FSP_HEADER_OFFSET = FIL_PAGE_DATA

constexpr

Offset of the space header within a file page.

FSP_HEADER_SIZE

constexpr uint32_t FSP_HEADER_SIZE = 32 + 5 * FLST_BASE_NODE_SIZE

constexpr

FSP_NOT_USED

constexpr uint32_t FSP_NOT_USED = 4

constexpr

this field contained a value up to which we know that the modifications in the database have been flushed to the file space; not used now

FSP_SDI_HEADER_LEN

constexpr uint32_t FSP_SDI_HEADER_LEN = 8

constexpr

The number of bytes required to store SDI root page number(4) and SDI version(4) at Page 0.

FSP_SEG_ID

constexpr uint32_t FSP_SEG_ID = 24 + 3 * FLST_BASE_NODE_SIZE

constexpr

8 bytes which give the first unused segment id

FSP_SEG_INODES_FREE

constexpr uint32_t FSP_SEG_INODES_FREE = 32 + 4 * FLST_BASE_NODE_SIZE

constexpr

list of pages containing segment headers, where not all the segment header slots are reserved

FSP_SEG_INODES_FULL

constexpr uint32_t FSP_SEG_INODES_FULL = 32 + 3 * FLST_BASE_NODE_SIZE

constexpr

list of pages containing segment headers, where all the segment inode slots are reserved

FSP_SIZE

constexpr uint32_t FSP_SIZE = 8

constexpr

Current size of the space in pages.

FSP_SPACE_FLAGS

constexpr uint32_t FSP_SPACE_FLAGS = 16

constexpr

fsp_space_t.flags, similar to dict_table_t::flags

FSP_SPACE_ID

constexpr uint32_t FSP_SPACE_ID = 0

constexpr

space id