Class Innodb::Inode
In: lib/innodb/inode.rb
Parent: Object

Methods

==   allocated?   dump   each_list   fill_factor   frag_array   frag_array_n_used   frag_array_pages   free   fseg_id   full   inspect   list   lists   magic_n   new   new_from_cursor   not_full   not_full_n_used   offset   page_number_array   total_pages   used_pages  

Constants

FRAG_ARRAY_N_SLOTS = 32   The number of "slots" (each representing one page) in the fragment array within each Inode entry.
FRAG_SLOT_SIZE = 4   The size (in bytes) of each slot in the fragment array.
MAGIC_N_VALUE = 97937874   A magic number which helps determine if an Inode structure is in use and populated with valid data.
SIZE = (16 + (3 * Innodb::List::BASE_NODE_SIZE) + (FRAG_ARRAY_N_SLOTS * FRAG_SLOT_SIZE))   The size (in bytes) of an Inode entry.

Attributes

space  [RW] 

Public Class methods

new_from_cursor(space, cursor)

Construct a new Inode by reading an FSEG header from a cursor.

page_number_array(size, cursor)

Read an array of page numbers (32-bit integers, which may be nil) from the provided cursor.

Public Instance methods

==(other)

Compare one Innodb::Inode to another.

allocated?()

Helper method to determine if an Inode is in use. Inodes that are not in use have an fseg_id of 0.

dump()

Dump a summary of this object for debugging purposes.

each_list() {|name, list(name)| ...}

Iterate through all lists, yielding the list name and the list itself.

fill_factor()

Calculate the fill factor of this fseg, in percent.

frag_array_n_used()

Helper method to count non-nil fragment pages.

frag_array_pages()

Helper method to return an array of only non-nil fragment pages.

list(name)

Return a list from the fseg, given its name as a symbol.

lists()

Return an array of lists within an fseg.

total_pages()

Calculate the total number of pages within this fseg.

used_pages()

Calculate the total number of pages in use (not free) within this fseg.

[Validate]