MySQL 9.0.0
Source Code Documentation
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In memory data block in Page ID archiving system. More...
#include <arch0arch.h>
Public Member Functions | |
Arch_Block (byte *blk_buf, uint size, Arch_Blk_Type type) | |
Constructor: Initialize elements. More... | |
void | copy_data (const Arch_Block *block) |
Do a deep copy of the members of the block passed as the parameter. More... | |
void | begin_write (Arch_Page_Pos pos) |
Set the block ready to begin writing page ID. More... | |
void | end_write () |
End writing to a block. More... | |
bool | is_init () const |
Check if block is initialised or not. More... | |
bool | is_active () const |
bool | is_flushable () const |
Check if the block can be flushed or not. More... | |
void | set_flushed () |
Set current block flushed. More... | |
bool | add_page (buf_page_t *page, Arch_Page_Pos *pos) |
Add page ID to current block. More... | |
void | add_reset (lsn_t reset_lsn, Arch_Page_Pos reset_pos) |
bool | get_data (Arch_Page_Pos *read_pos, uint read_len, byte *read_buff) |
Copy page Ids from this block at read position to a buffer. More... | |
bool | set_data (uint read_len, byte *read_buff, uint read_offset) |
Copy page Ids from a buffer to this block. More... | |
dberr_t | flush (Arch_Group *file_group, Arch_Blk_Flush_Type type) |
Flush this block to the file group. More... | |
void | update_block_header (lsn_t stop_lsn, lsn_t reset_lsn) |
uint | get_data_len () const |
void | set_data_len (uint data_len) |
Set the data length of the block. More... | |
void | set_reset_lsn (lsn_t reset_lsn) |
Set the reset length of the block. More... | |
uint64_t | get_number () const |
lsn_t | get_stop_lsn () const |
lsn_t | get_oldest_lsn () const |
Get oldest LSN among the pages that are added to this block. More... | |
Arch_Blk_State | get_state () const |
Get current state of the block. More... | |
Static Public Member Functions | |
static bool | validate (byte *block) |
Check if the block data is valid. More... | |
static uint | get_file_index (uint64_t block_num, Arch_Blk_Type type) |
Get file index of the file the block belongs to. More... | |
static Arch_Blk_Type | get_type (byte *block) |
Get block type from the block header. More... | |
static uint | get_data_len (byte *block) |
Get block data length from the block header. More... | |
static lsn_t | get_stop_lsn (byte *block) |
Get the stop lsn stored in the block header. More... | |
static uint64_t | get_block_number (byte *block) |
Get the block number from the block header. More... | |
static lsn_t | get_reset_lsn (byte *block) |
Get the reset lsn stored in the block header. More... | |
static uint32_t | get_checksum (byte *block) |
Get the checksum stored in the block header. More... | |
static uint64_t | get_file_offset (uint64_t block_num, Arch_Blk_Type type) |
Fetch the offset for a block in the archive file. More... | |
Private Attributes | |
byte * | m_data |
Block data buffer. More... | |
uint | m_data_len {} |
Block data length in bytes. More... | |
uint | m_size |
Total block size in bytes. More... | |
Arch_Blk_State | m_state {ARCH_BLOCK_INIT} |
State of the block. More... | |
uint64_t | m_number {} |
Unique block number. More... | |
Arch_Blk_Type | m_type |
Type of block. More... | |
lsn_t | m_stop_lsn {LSN_MAX} |
Checkpoint lsn at the time the last page ID was added to the block. More... | |
lsn_t | m_oldest_lsn {LSN_MAX} |
Oldest LSN of all the page IDs added to the block since the last checkpoint. More... | |
lsn_t | m_reset_lsn {LSN_MAX} |
Start LSN or the last reset LSN of the group. More... | |
In memory data block in Page ID archiving system.
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inline |
Constructor: Initialize elements.
[in] | blk_buf | buffer for data block |
[in] | size | buffer size |
[in] | type | block type |
bool Arch_Block::add_page | ( | buf_page_t * | page, |
Arch_Page_Pos * | pos | ||
) |
Add page ID to current block.
[in] | page | page from buffer pool |
[in] | pos | Archiver current position |
void Arch_Block::add_reset | ( | lsn_t | reset_lsn, |
Arch_Page_Pos | reset_pos | ||
) |
void Arch_Block::begin_write | ( | Arch_Page_Pos | pos | ) |
Set the block ready to begin writing page ID.
[in] | pos | position to initiate block number |
void Arch_Block::copy_data | ( | const Arch_Block * | block | ) |
Do a deep copy of the members of the block passed as the parameter.
void Arch_Block::end_write | ( | ) |
End writing to a block.
Change state to ARCH_BLOCK_READY_TO_FLUSH
dberr_t Arch_Block::flush | ( | Arch_Group * | file_group, |
Arch_Blk_Flush_Type | type | ||
) |
Flush this block to the file group.
[in] | file_group | current archive group |
[in] | type | flush type |
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Get the block number from the block header.
[in] | block | block from where to fetch the block number |
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Get the checksum stored in the block header.
[in] | block | block from where to fetch the checksum |
bool Arch_Block::get_data | ( | Arch_Page_Pos * | read_pos, |
uint | read_len, | ||
byte * | read_buff | ||
) |
Copy page Ids from this block at read position to a buffer.
[in] | read_pos | current read position |
[in] | read_len | length of data to copy |
[out] | read_buff | buffer to copy page IDs. Caller must allocate the buffer. |
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Get block data length from the block header.
[in] | block | block from where to get the data length |
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Get file index of the file the block belongs to.
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Fetch the offset for a block in the archive file.
[in] | block_num | block number |
[in] | type | type of block |
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Get oldest LSN among the pages that are added to this block.
Get the reset lsn stored in the block header.
[in] | block | block from where to fetch the reset lsn |
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Get current state of the block.
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Get the stop lsn stored in the block header.
[in] | block | block from where to fetch the stop lsn |
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Get block type from the block header.
[in] | block | block from where to get the type |
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Check if the block can be flushed or not.
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Check if block is initialised or not.
bool Arch_Block::set_data | ( | uint | read_len, |
byte * | read_buff, | ||
uint | read_offset | ||
) |
Copy page Ids from a buffer to this block.
[in] | read_len | length of data to copy |
[in] | read_buff | buffer to copy page IDs from |
[in] | read_offset | offset from where to write |
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Set the data length of the block.
[in] | data_len | data length |
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Set current block flushed.
Must hold page archiver sys operation mutex.
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Set the reset length of the block.
[in] | reset_lsn | reset lsn |
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Check if the block data is valid.
[in] | block | block to be validated |
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private |
Block data buffer.
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Block data length in bytes.
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Unique block number.
Oldest LSN of all the page IDs added to the block since the last checkpoint.
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Total block size in bytes.
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State of the block.
Checkpoint lsn at the time the last page ID was added to the block.
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Type of block.