File space management. More...

Functions
static bool	fsp_descr_page (const page_id_t &page_id, const page_size_t &page_size)
	Checks if a page address is an extent descriptor page address. More...

static bool	fsp_flags_is_compressed (uint32_t flags)
	Determine if the tablespace is compressed from tablespace flags. More...

constexpr uint32_t	ACTUAL_SSIZE (uint32_t ssize)

static bool	fsp_flags_are_equal (uint32_t flags1, uint32_t flags2)
	Determine if two tablespaces are equivalent or compatible. More...

static uint32_t	page_size_to_ssize (ulint page_size)
	Convert a page size, which is a power of 2, to an ssize, which is the number of bit shifts from 512 to make that page size. More...

static uint32_t	fsp_flags_set_zip_size (uint32_t flags, const page_size_t &page_size)
	Add the compressed page size to the tablespace flags. More...

static uint32_t	fsp_flags_set_page_size (uint32_t flags, const page_size_t &page_size)
	Add the page size to the tablespace flags. More...

static uint32_t	fsp_flags_init (const page_size_t &page_size, bool atomic_blobs, bool has_data_dir, bool is_shared, bool is_temporary, bool is_encrypted)
	Initialize an FSP flags integer. More...

static ulint	xdes_calc_descriptor_index (const page_size_t &page_size, ulint offset)
	Calculates the descriptor index within a descriptor page. More...

static bool	xdes_get_bit (const xdes_t *descr, ulint bit, page_no_t offset)
	Gets a descriptor bit of a page. More...

static page_no_t	xdes_calc_descriptor_page (const page_size_t &page_size, page_no_t offset)
	Calculates the page where the descriptor of a page resides. More...

static ulint	xdes_arr_size (const page_size_t &page_size)
	Calculates the descriptor array size. More...

bool	fsp_is_inode_page (page_no_t page)
	Check if a specified page is inode page or not. More...

bool	fsp_flags_is_valid (uint32_t flags)
	Validate the tablespace flags. More...

ulint	fsp_header_get_sdi_offset (const page_size_t &page_size)
	Get the offset of SDI root page number in page 0. More...

ulint	fsp_header_get_encryption_progress_offset (const page_size_t &page_size)
	Get the offset of encryption progress information in page 0. More...

static uint32_t	fsp_header_get_server_version (const page_t *page)
	Reads the server space version from the first page of a tablespace. More...

static uint32_t	fsp_header_get_space_version (const page_t *page)
	Reads the server space version from the first page of a tablespace. More...

Detailed Description

File space management.

Created 12/18/1995 Heikki Tuuri

Function Documentation

◆ ACTUAL_SSIZE()

constexpr uint32_t ACTUAL_SSIZE ( uint32_t ssize )

constexpr

◆ fsp_descr_page()

static bool fsp_descr_page	(	const page_id_t &	page_id,
		const page_size_t &	page_size
	)

inlinestatic

Checks if a page address is an extent descriptor page address.

Parameters

[in]	page_id	page id
[in]	page_size	page size

Returns: true if a descriptor page

◆ fsp_flags_are_equal()

static bool fsp_flags_are_equal	(	uint32_t	flags1,
		uint32_t	flags2
	)

inlinestatic

Determine if two tablespaces are equivalent or compatible.

Parameters

[in]	flags1	First tablespace flags
[in]	flags2	Second tablespace flags

Returns: true the flags are compatible, false if not

◆ fsp_flags_init()

static uint32_t fsp_flags_init	(	const page_size_t &	page_size,
		bool	atomic_blobs,
		bool	has_data_dir,
		bool	is_shared,
		bool	is_temporary,
		bool	is_encrypted
	)

inlinestatic

Initialize an FSP flags integer.

Parameters

[in]	page_size	page sizes in bytes and compression flag.
[in]	atomic_blobs	Used by Dynammic and Compressed.
[in]	has_data_dir	This tablespace is in a remote location.
[in]	is_shared	This tablespace can be shared by many tables.
[in]	is_temporary	This tablespace is temporary.
[in]	is_encrypted	This tablespace is encrypted.

Returns: tablespace flags after initialization

◆ fsp_flags_is_compressed()

static bool fsp_flags_is_compressed ( uint32_t flags )

inlinestatic

Determine if the tablespace is compressed from tablespace flags.

Parameters

[in] flags Tablespace flags

Returns: true if compressed, false if not compressed

◆ fsp_flags_is_valid()

bool fsp_flags_is_valid ( uint32_t flags )

inline

Validate the tablespace flags.

These flags are stored in the tablespace header at offset FSP_SPACE_FLAGS. They should be 0 for ROW_FORMAT=COMPACT and ROW_FORMAT=REDUNDANT. The newer row formats, COMPRESSED and DYNAMIC, will have at least the DICT_TF_COMPACT bit set.

Parameters

[in] flags Tablespace flags

Returns: true if valid, false if not

◆ fsp_flags_set_page_size()

static uint32_t fsp_flags_set_page_size	(	uint32_t	flags,
		const page_size_t &	page_size
	)

inlinestatic

Add the page size to the tablespace flags.

Parameters

[in]	flags	Tablespace flags
[in]	page_size	page sizes in bytes and compression flag.

Returns: tablespace flags after page size is added

◆ fsp_flags_set_zip_size()

static uint32_t fsp_flags_set_zip_size	(	uint32_t	flags,
		const page_size_t &	page_size
	)

inlinestatic

Add the compressed page size to the tablespace flags.

Parameters

[in]	flags	Tablespace flags
[in]	page_size	page sizes in bytes and compression flag.

Returns: tablespace flags after zip size is added

◆ fsp_header_get_encryption_progress_offset()

ulint fsp_header_get_encryption_progress_offset ( const page_size_t & page_size )

inline

Get the offset of encryption progress information in page 0.

Parameters

[in] page_size page size.

Returns: offset on success, otherwise 0.

◆ fsp_header_get_sdi_offset()

ulint fsp_header_get_sdi_offset ( const page_size_t & page_size )

inline

Get the offset of SDI root page number in page 0.

Parameters

[in] page_size Page size.

Returns: offset on success, else 0

◆ fsp_header_get_server_version()

static uint32_t fsp_header_get_server_version ( const page_t * page )

inlinestatic

Reads the server space version from the first page of a tablespace.

Parameters

[in] page first page of a tablespace

Returns: space server version

◆ fsp_header_get_space_version()

static uint32_t fsp_header_get_space_version ( const page_t * page )

inlinestatic

Reads the server space version from the first page of a tablespace.

Parameters

[in] page first page of a tablespace

Returns: space server version

◆ fsp_is_inode_page()

bool fsp_is_inode_page ( page_no_t page )

inline

Check if a specified page is inode page or not.

This is used for index root pages of hard-coded DD tables, we can safely assume that the passed in page number is in the range of pages which are only either index root page or inode page

Parameters

[in] page Page number to check

Returns: true if it's inode page, otherwise false

◆ page_size_to_ssize()

static uint32_t page_size_to_ssize ( ulint page_size )

inlinestatic

Convert a page size, which is a power of 2, to an ssize, which is the number of bit shifts from 512 to make that page size.

Parameters

[in] page_size compressed page size in bytes

Returns: an ssize created from the page size provided.

◆ xdes_arr_size()

static ulint xdes_arr_size ( const page_size_t & page_size )

inlinestatic

Calculates the descriptor array size.

Parameters

[in] page_size page size

Returns: size of descriptor array

◆ xdes_calc_descriptor_index()

static ulint xdes_calc_descriptor_index	(	const page_size_t &	page_size,
		ulint	offset
	)

inlinestatic

Calculates the descriptor index within a descriptor page.

Parameters

[in]	page_size	page size
[in]	offset	page offset

Returns: descriptor index

◆ xdes_calc_descriptor_page()

static page_no_t xdes_calc_descriptor_page	(	const page_size_t &	page_size,
		page_no_t	offset
	)

inlinestatic

Calculates the page where the descriptor of a page resides.

Parameters

[in]	page_size	page size
[in]	offset	page offset

Returns: descriptor page offset

◆ xdes_get_bit()

static bool xdes_get_bit	(	const xdes_t *	descr,
		ulint	bit,
		page_no_t	offset
	)

inlinestatic

Gets a descriptor bit of a page.

Returns: true if free

Parameters

descr	in: descriptor
bit	in: XDES_FREE_BIT or XDES_CLEAN_BIT
offset	in: page offset within extent: 0 ... FSP_EXTENT_SIZE - 1

Functions

Detailed Description

Function Documentation

◆ ACTUAL_SSIZE()

◆ fsp_descr_page()

◆ fsp_flags_are_equal()

◆ fsp_flags_init()

◆ fsp_flags_is_compressed()

◆ fsp_flags_is_valid()

◆ fsp_flags_set_page_size()

◆ fsp_flags_set_zip_size()

◆ fsp_header_get_encryption_progress_offset()

◆ fsp_header_get_sdi_offset()

◆ fsp_header_get_server_version()

◆ fsp_header_get_space_version()

◆ fsp_is_inode_page()

◆ page_size_to_ssize()

◆ xdes_arr_size()

◆ xdes_calc_descriptor_index()

◆ xdes_calc_descriptor_page()

◆ xdes_get_bit()