Functions | |
| UNIV_INLINE ibool | fsp_descr_page (ulint zip_size, ulint page_no) |
| UNIV_INLINE bool | fsp_flags_is_valid (ulint flags) |
| UNIV_INLINE ibool | fsp_flags_is_compressed (ulint flags) |
| UNIV_INLINE ulint | fsp_flags_get_zip_size (ulint flags) |
| UNIV_INLINE ulint | fsp_flags_get_page_size (ulint flags) |
| UNIV_INLINE ulint | fsp_flags_set_page_size (ulint flags, ulint page_size) |
| UNIV_INLINE ulint | xdes_calc_descriptor_index (ulint zip_size, ulint offset) |
| UNIV_INLINE ibool | xdes_get_bit (const xdes_t *descr, ulint bit, ulint offset) |
| UNIV_INLINE ulint | xdes_calc_descriptor_page (ulint zip_size, ulint offset) |
Detailed Description
File space management
Created 12/18/1995 Heikki Tuuri
Function Documentation
| UNIV_INLINE ibool fsp_descr_page | ( | ulint | zip_size, |
| ulint | page_no | ||
| ) |
Checks if a page address is an extent descriptor page address.
- Returns
- TRUE if a descriptor page
- Parameters
-
zip_size in: compressed page size in bytes; 0 for uncompressed pages page_no in: page number
| UNIV_INLINE ulint fsp_flags_get_page_size | ( | ulint | flags | ) |
Extract the page size from tablespace flags.
- Returns
- page size of the tablespace in bytes
- Parameters
-
flags in: tablespace flags
| UNIV_INLINE ulint fsp_flags_get_zip_size | ( | ulint | flags | ) |
Extract the zip size from tablespace flags.
- Returns
- compressed page size of the file-per-table tablespace in bytes, or zero if the table is not compressed.
- Parameters
-
flags in: tablespace flags
| UNIV_INLINE ibool fsp_flags_is_compressed | ( | ulint | flags | ) |
Determine if the tablespace is compressed from dict_table_t::flags.
- Returns
- TRUE if compressed, FALSE if not compressed
- Parameters
-
flags in: tablespace flags
| UNIV_INLINE bool fsp_flags_is_valid | ( | ulint | flags | ) |
Validate and return the tablespace flags, which 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, use a file format > Antelope so they should have a file format number plus the DICT_TF_COMPACT bit set.
- Returns
- true if check ok
- Parameters
-
flags in: tablespace flags
| UNIV_INLINE ulint fsp_flags_set_page_size | ( | ulint | flags, |
| ulint | page_size | ||
| ) |
Add the page size to the tablespace flags.
- Returns
- tablespace flags after page size is added
- Parameters
-
flags in: tablespace flags page_size in: page size in bytes
| UNIV_INLINE ulint xdes_calc_descriptor_index | ( | ulint | zip_size, |
| ulint | offset | ||
| ) |
Calculates the descriptor index within a descriptor page.
- Returns
- descriptor index
- Parameters
-
zip_size in: compressed page size in bytes; 0 for uncompressed pages offset in: page offset
| UNIV_INLINE ulint xdes_calc_descriptor_page | ( | ulint | zip_size, |
| ulint | offset | ||
| ) |
Calculates the page where the descriptor of a page resides.
- Returns
- descriptor page offset
- Parameters
-
zip_size in: compressed page size in bytes; 0 for uncompressed pages offset in: page offset
| UNIV_INLINE ibool xdes_get_bit | ( | const xdes_t * | descr, |
| ulint | bit, | ||
| ulint | offset | ||
| ) |
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
