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<title>Parallel BGL Simple Triggers</title>
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<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> Simple Triggers</h1>
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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="#introduction" id="id1">Introduction</a></li>
<li><a class="reference internal" href="#where-defined" id="id2">Where Defined</a></li>
<li><a class="reference internal" href="#reference" id="id3">Reference</a></li>
</ul>
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<div class="section" id="introduction">
<h1><a class="toc-backref" href="#id1">Introduction</a></h1>
<p>Triggers in the <a class="reference external" href="process_group.html">process group</a> interface are used to asynchronously
receive and process messages destined for distributed data
structures. The trigger interface is relatively versatile, permitting
one to attach any function object to handle requests. The
<tt class="docutils literal"><span class="pre">simple_trigger</span></tt> function simplifies a common case for triggers:
attaching a trigger that invokes a specific member function of the
distributed data structure.</p>
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<div class="section" id="where-defined">
<h1><a class="toc-backref" href="#id2">Where Defined</a></h1>
<p>Header <tt class="docutils literal"><span class="pre">&lt;boost/graph/parallel/simple_trigger.hpp&gt;</span></tt></p>
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<div class="section" id="reference">
<h1><a class="toc-backref" href="#id3">Reference</a></h1>
<blockquote>
<pre class="literal-block">
template&lt;typename ProcessGroup, typename Class, typename T&gt;
void
simple_trigger(ProcessGroup&amp; pg, int tag, Class* self,
void (Class::*pmf)(int source, int tag, const T&amp; data,
trigger_receive_context context))
template&lt;typename ProcessGroup, typename Class, typename T, typename Result&gt;
void
simple_trigger(ProcessGroup&amp; pg, int tag, Class* self,
Result (Class::*pmf)(int source, int tag, const T&amp; data,
trigger_receive_context context))
</pre>
</blockquote>
<p>The <tt class="docutils literal"><span class="pre">simple_trigger</span></tt> function registers a trigger that invokes the
given member function (<tt class="docutils literal"><span class="pre">pmf</span></tt>) on the object <tt class="docutils literal"><span class="pre">self</span></tt> whenever a
message is received. If the member function has a return value, then
the trigger has a reply, and can only be used via out-of-band sends
that expect a reply. Otherwise, the member function returns <tt class="docutils literal"><span class="pre">void</span></tt>,
and the function is registered as a normal trigger.</p>
<hr class="docutils" />
<p>Copyright (C) 2007 Douglas Gregor</p>
<p>Copyright (C) 2007 Matthias Troyer</p>
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