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| <title>Parallel BGL Concept Global Descriptor</title> |
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| <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 |
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| <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> |
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| Generated on: 2009-05-31 00:22 UTC. |
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