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Full Discussion: Atomicity
Top Forums Programming Atomicity Post 51097 by S.P.Prasad on Tuesday 11th of May 2004 01:33:28 AM
Old 05-11-2004
Please visit the link within this post.

_check_lock and _clear_lock on AIX


I tested the code implementing the routines and the code behaves fine in Unit testing.

Also if someone can explain me in detail "The word variable must be aligned on a full word boundary." as stated in the page. Please correct me if I am worng - "A group of related bytes that are treated as a single addressable unit or entity in memory is called as a WORD. Hence size of a word varies from one computer to another, depending on the CPU. For computers with a 16-bit CPU, a word is 16 bits (2 bytes)."

Single Word = Single addressable unit by CPU
Word Boundary = Address completely divisible by number of bytes that represents a single addressable unit.

Example Single Word length = 16 bits then a word boundary is any address that is completely divisible by 16, which would mean that the variable referenced here should begin at 0,16,32,48,64 ... and so on memory locations and the variable should consume 16 bits of memory.

Am I correct? What extra care should I take into account during coding?

Please let me know whether these are a proven set of standard 'C' routines. Please let me know your honest opinions before I put it into the production system and have a go.

Thanks in advance

Last edited by S.P.Prasad; 05-11-2004 at 05:11 AM..
 
Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME
Graphics::Primitive::Insets - Space between things DESCRIPTION
Graphics::Primitive::Insets represents the amount of space that surrounds something. This object can be used to represent either padding or margins (in the CSS sense, one being inside the bounding box, the other being outside) SYNOPSIS
use Graphics::Primitive::Insets; my $insets = Graphics::Primitive::Insets->new({ top => 5, bottom => 5, left => 5, right => 5 }); METHODS
Constructor new Creates a new Graphics::Primitive::Insets. Instance Methods as_array Return these insets as an array in the form of top, right, bottom and left. bottom Set/Get the inset from the bottom. equal_to Determine if these Insets are equal to another. left Set/Get the inset from the left. right Set/Get the inset from the right. top Set/Get the inset from the top. zero Sets all the insets (top, left, bottom, right) to 0. AUTHOR
Cory Watson, "<gphat@cpan.org>" SEE ALSO
perl(1) COPYRIGHT &; LICENSE Copyright 2008-2010 by Cory G Watson. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.3 2010-08-21 Graphics::Primitive::Insets(3pm)
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