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Segment Class Reference

This class contains information about a storage segment on disk. More...

#include <segment.h>

Collaboration diagram for Segment:

[legend]List of all members.

Public Attributes
Segment_header *	header
void *	buffer
unsigned int	first_block
unsigned int	curr_page_block
unsigned int	pages_count
unsigned int	index

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Detailed Description

This class contains information about a storage segment on disk.

The disk is divided up into a series of fixed-size segments, and each segment contains several data pages. A Segment object in memory provides information about a single storage segment on disk. It contains a copy of the segment's header and a buffer containing its page data.

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Member Data Documentation

void* Segment::buffer

contains the segment's page data.

unsigned int Segment::curr_page_block

disk block of current page.

unsigned int Segment::first_block

block number of segment on disk.

Segment_header* Segment::header

copy of segment's metadata.

unsigned int Segment::index

0th segment is 0, 1st segment is 1.

unsigned int Segment::pages_count

number of pages stored in segment.

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The documentation for this class was generated from the following file:

• segment.h

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Torsion Operating System, Copyright (C) 2000-2002 Dan Helfman