<?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="generator" content="Docutils 0.6: http://docutils.sourceforge.net/" /> <title>Parallel BGL Concept Global Descriptor</title> <link rel="stylesheet" href="../../../../rst.css" type="text/css" /> </head> <body> <div class="document" id="logo-concept-global-descriptor"> <h1 class="title"><a class="reference external" href="http://www.osl.iu.edu/research/pbgl"><img align="middle" alt="Parallel BGL" class="align-middle" src="pbgl-logo.png" /></a> Concept Global Descriptor</h1> <!-- Copyright (C) 2004-2008 The Trustees of Indiana University. Use, modification and distribution is subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> <div class="contents topic" id="contents"> <p class="topic-title first">Contents</p> <ul class="simple"> <li><a class="reference internal" href="#description" id="id1">Description</a></li> <li><a class="reference internal" href="#refinement-of" id="id2">Refinement of</a></li> <li><a class="reference internal" href="#notation" id="id3">Notation</a></li> <li><a class="reference internal" href="#associated-types" id="id4">Associated types</a></li> <li><a class="reference internal" href="#valid-expressions" id="id5">Valid Expressions</a></li> </ul> </div> <div class="section" id="description"> <h1><a class="toc-backref" href="#id1">Description</a></h1> <p>A global descriptor is an object that represents an entity that is owned by some process and may reside in an address space not accessible to the currently-executing process. The global descriptor consists of two parts: the <em>owner</em> of the entity, which is the identifier of that process in which the entity resides, and a <em>local descriptor</em>, that uniquely identifies the entity with the address space of the owner.</p> </div> <div class="section" id="refinement-of"> <h1><a class="toc-backref" href="#id2">Refinement of</a></h1> <blockquote> <ul class="simple"> <li><a class="reference external" href="http://www.sgi.com/tech/stl/DefaultConstructible.html">Default Constructible</a></li> <li><a class="reference external" href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a></li> </ul> </blockquote> </div> <div class="section" id="notation"> <h1><a class="toc-backref" href="#id3">Notation</a></h1> <dl class="docutils"> <dt>X</dt> <dd>A type that models the Global Descriptor concept.</dd> <dt>x</dt> <dd>Object of type X</dd> </dl> </div> <div class="section" id="associated-types"> <h1><a class="toc-backref" href="#id4">Associated types</a></h1> <table border="1" class="docutils"> <colgroup> <col width="23%" /> <col width="29%" /> <col width="48%" /> </colgroup> <tbody valign="top"> <tr><td>Process ID type</td> <td><tt class="docutils literal"><span class="pre">process_id_type</span></tt></td> <td>Determined by the process group associated with type X.</td> </tr> <tr><td>Local descriptor type</td> <td><tt class="docutils literal"><span class="pre">local_type</span></tt></td> <td>Determined by the data structure the descriptor accesses. Must model <a class="reference external" href="http://www.sgi.com/tech/stl/EqualityComparable.html">Equality Comparable</a> and <a class="reference external" href="http://www.sgi.com/tech/stl/CopyConstructible.html">Copy Constructible</a>.</td> </tr> </tbody> </table> </div> <div class="section" id="valid-expressions"> <h1><a class="toc-backref" href="#id5">Valid Expressions</a></h1> <table border="1" class="docutils"> <colgroup> <col width="17%" /> <col width="22%" /> <col width="22%" /> <col width="39%" /> </colgroup> <thead valign="bottom"> <tr><th class="head">Name</th> <th class="head">Expression</th> <th class="head">Type</th> <th class="head">Semantics</th> </tr> </thead> <tbody valign="top"> <tr><td>Owner</td> <td><tt class="docutils literal"><span class="pre">owner(x)</span></tt></td> <td><tt class="docutils literal"><span class="pre">process_id_type</span></tt></td> <td>Returns the owner of <tt class="docutils literal"><span class="pre">x</span></tt>.</td> </tr> <tr><td>Local descriptor</td> <td><tt class="docutils literal"><span class="pre">local(x)</span></tt></td> <td><tt class="docutils literal"><span class="pre">local_type</span></tt></td> <td>Returns the local descriptor uniquely identifying <tt class="docutils literal"><span class="pre">x</span></tt>.</td> </tr> </tbody> </table> <hr class="docutils" /> <p>Copyright (C) 2005 The Trustees of Indiana University.</p> <p>Authors: Douglas Gregor and Andrew Lumsdaine</p> </div> </div> <div class="footer"> <hr class="footer" /> Generated on: 2009-05-31 00:22 UTC. 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