MySQL 8.4.3
Source Code Documentation
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Macros | |
#define | XDES_SIZE (XDES_BITMAP + UT_BITS_IN_BYTES(FSP_EXTENT_SIZE * XDES_BITS_PER_PAGE)) |
File extent data structure size in bytes. More... | |
#define | XDES_SIZE_MAX (XDES_BITMAP + UT_BITS_IN_BYTES(FSP_EXTENT_SIZE_MAX * XDES_BITS_PER_PAGE)) |
File extent data structure size in bytes for MAX page size. More... | |
#define | XDES_SIZE_MIN (XDES_BITMAP + UT_BITS_IN_BYTES(FSP_EXTENT_SIZE_MIN * XDES_BITS_PER_PAGE)) |
File extent data structure size in bytes for MIN page size. More... | |
Enumerations | |
enum | xdes_state_t { XDES_NOT_INITED = 0 , XDES_FREE = 1 , XDES_FREE_FRAG = 2 , XDES_FULL_FRAG = 3 , XDES_FSEG = 4 , XDES_FSEG_FRAG = 5 } |
States of a descriptor. More... | |
Variables | |
constexpr uint32_t | XDES_ID = 0 |
The identifier of the segment to which this extent belongs. More... | |
constexpr uint32_t | XDES_FLST_NODE = 8 |
The list node data structure for the descriptors. More... | |
constexpr uint32_t | XDES_STATE = FLST_NODE_SIZE + 8 |
contains state information of the extent More... | |
constexpr uint32_t | XDES_BITMAP = FLST_NODE_SIZE + 12 |
Descriptor bitmap of the pages in the extent. More... | |
constexpr uint32_t | XDES_BITS_PER_PAGE = 2 |
How many bits are there per page. More... | |
constexpr uint32_t | XDES_FREE_BIT = 0 |
Index of the bit which tells if the page is free. More... | |
constexpr uint32_t | XDES_CLEAN_BIT = 1 |
NOTE: currently not used! Index of the bit which tells if there are old versions of tuples on the page. More... | |
constexpr uint32_t | XDES_ARR_OFFSET = FSP_HEADER_OFFSET + FSP_HEADER_SIZE |
Offset of the descriptor array on a descriptor page. More... | |
const ulint | XDES_FRAG_N_USED = 2 |
The number of reserved pages in a fragment extent. More... | |
#define XDES_SIZE (XDES_BITMAP + UT_BITS_IN_BYTES(FSP_EXTENT_SIZE * XDES_BITS_PER_PAGE)) |
File extent data structure size in bytes.
#define XDES_SIZE_MAX (XDES_BITMAP + UT_BITS_IN_BYTES(FSP_EXTENT_SIZE_MAX * XDES_BITS_PER_PAGE)) |
File extent data structure size in bytes for MAX page size.
#define XDES_SIZE_MIN (XDES_BITMAP + UT_BITS_IN_BYTES(FSP_EXTENT_SIZE_MIN * XDES_BITS_PER_PAGE)) |
File extent data structure size in bytes for MIN page size.
enum xdes_state_t |
States of a descriptor.
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constexpr |
Offset of the descriptor array on a descriptor page.
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constexpr |
Descriptor bitmap of the pages in the extent.
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constexpr |
How many bits are there per page.
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constexpr |
NOTE: currently not used! Index of the bit which tells if there are old versions of tuples on the page.
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constexpr |
The list node data structure for the descriptors.
const ulint XDES_FRAG_N_USED = 2 |
The number of reserved pages in a fragment extent.
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constexpr |
Index of the bit which tells if the page is free.
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constexpr |
The identifier of the segment to which this extent belongs.
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constexpr |
contains state information of the extent