Class Innodb::LSN
In: lib/innodb/lsn.rb
Parent: Object

A Log Sequence Number and its byte offset into the log group.

Methods

advance   delta   location   new   record?   reposition  

Constants

LOG_HEADER_SIZE = Innodb::Log::LOG_HEADER_SIZE   Short alias for the size of a log file header.
LOG_BLOCK_SIZE = Innodb::LogBlock::BLOCK_SIZE   Short aliases for the sizes of the subparts of a log block.
LOG_BLOCK_HEADER_SIZE = Innodb::LogBlock::HEADER_SIZE
LOG_BLOCK_TRAILER_SIZE = Innodb::LogBlock::TRAILER_SIZE
LOG_BLOCK_DATA_SIZE = Innodb::LogBlock::DATA_SIZE
LOG_BLOCK_FRAME_SIZE = LOG_BLOCK_HEADER_SIZE + LOG_BLOCK_TRAILER_SIZE

External Aliases

lsn_no -> no
  Alias :lsn_no attribute.

Attributes

lsn_no  [R]  The Log Sequence Number.

Public Class methods

new(lsn, offset)

Initialize coordinates.

Public Instance methods

advance(count_lsn_no, group)

Advance by a given LSN amount.

delta(length)

Returns the LSN delta for the given amount of data.

location(group)

Returns the location coordinates of this LSN.

record?(group)

Whether LSN might point to log record data.

[Validate]