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<title>Chapter 39. Thread 4.8.0</title>
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<div class="chapter">
<div class="titlepage"><div>
<div><h2 class="title">
<a name="thread"></a>Chapter 39. Thread 4.8.0</h2></div>
<div><div class="author"><h3 class="author">
<span class="firstname">Anthony</span> <span class="surname">Williams</span>
</h3></div></div>
<div><div class="author"><h3 class="author">
<span class="firstname">Vicente J.</span> <span class="surname">Botet Escriba</span>
</h3></div></div>
<div><p class="copyright">Copyright © 2007 -11 Anthony Williams</p></div>
<div><p class="copyright">Copyright © 2011 -17 Vicente J. Botet Escriba</p></div>
<div><div class="legalnotice">
<a name="thread.legal"></a><p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p>
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<div class="toc">
<p><b>Table of Contents</b></p>
<dl class="toc">
<dt><span class="section"><a href="thread.html#thread.overview">Overview</a></span></dt>
<dt><span class="section"><a href="thread/build.html">Using and building the library</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/build.html#thread.build.configuration">Configuration</a></span></dt>
<dt><span class="section"><a href="thread/build.html#thread.build.limitations">Limitations</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="thread/changes.html">History</a></span></dt>
<dt><span class="section"><a href="thread/future.html">Future</a></span></dt>
<dt><span class="section"><a href="thread/thread_management.html">Thread Management</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/thread_management.html#thread.thread_management.synopsis">Synopsis</a></span></dt>
<dt><span class="section"><a href="thread/thread_management.html#thread.thread_management.tutorial">Tutorial</a></span></dt>
<dt><span class="section"><a href="thread/thread_management.html#thread.thread_management.thread">Class <code class="computeroutput"><span class="identifier">thread</span></code></a></span></dt>
<dt><span class="section"><a href="thread/thread_management.html#thread.thread_management.this_thread">Namespace <code class="computeroutput"><span class="identifier">this_thread</span></code></a></span></dt>
<dt><span class="section"><a href="thread/thread_management.html#thread.thread_management.threadgroup">Class <code class="computeroutput"><span class="identifier">thread_group</span></code> EXTENSION</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="thread/ScopedThreads.html">Scoped Threads</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/ScopedThreads.html#thread.ScopedThreads.motivation">Motivation</a></span></dt>
<dt><span class="section"><a href="thread/ScopedThreads.html#thread.ScopedThreads.tutorial">Tutorial</a></span></dt>
<dt><span class="section"><a href="thread/ScopedThreads.html#thread.ScopedThreads.thread_functors">Free Thread Functors</a></span></dt>
<dt><span class="section"><a href="thread/ScopedThreads.html#thread.ScopedThreads.strict_scoped_thread">Class <code class="computeroutput"><span class="identifier">strict_scoped_thread</span></code></a></span></dt>
<dt><span class="section"><a href="thread/ScopedThreads.html#thread.ScopedThreads.scoped_thread">Class <code class="computeroutput"><span class="identifier">scoped_thread</span></code></a></span></dt>
<dt><span class="section"><a href="thread/ScopedThreads.html#thread.ScopedThreads.non_member_swap">Non-member function
<code class="computeroutput"><span class="identifier">swap</span><span class="special">(</span><span class="identifier">scoped_thread</span><span class="special">&,</span><span class="identifier">scoped_thread</span><span class="special">&)</span></code></a></span></dt>
</dl></dd>
<dt><span class="section"><a href="thread/synchronization.html">Synchronization</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.tutorial">Tutorial</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.mutex_concepts">Mutex Concepts</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.lock_option">Lock Options</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.lock_guard">Lock Guard</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.with_lock_guard">With Lock Guard</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.lock_concepts">Lock Concepts</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.locks">Lock Types</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.other_locks">Other Lock Types
- EXTENSION</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.lock_functions">Lock functions</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.lock_factories">Lock Factories
- EXTENSION</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.mutex_types">Mutex Types</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.condvar_ref">Condition Variables</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.once">One-time Initialization</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.barriers">Barriers -- EXTENSION</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.latches">Latches -- EXPERIMENTAL</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.executors">Executors and Schedulers
-- EXPERIMENTAL</a></span></dt>
<dt><span class="section"><a href="thread/synchronization.html#thread.synchronization.futures">Futures</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="thread/thread_local_storage.html">Thread Local Storage</a></span></dt>
<dd><dl><dt><span class="section"><a href="thread/thread_local_storage.html#thread.thread_local_storage.thread_specific_ptr">Class
<code class="computeroutput"><span class="identifier">thread_specific_ptr</span></code></a></span></dt></dl></dd>
<dt><span class="section"><a href="thread/sds.html">Synchronized Data Structures</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/sds.html#thread.sds.synchronized_valuesxxx">Synchronized Values
- EXPERIMENTAL</a></span></dt>
<dt><span class="section"><a href="thread/sds.html#thread.sds.synchronized_queues">Synchronized Queues --
EXPERIMENTAL</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="thread/parallel.html">Parallel - Fork-Join -- EXPERIMENTAL</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/parallel.html#thread.parallel.fork_join">Fork-Join</a></span></dt>
<dt><span class="section"><a href="thread/parallel.html#thread.parallel.ref">Reference -- EXPERIMENTAL</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="thread/time.html">Time Requirements</a></span></dt>
<dd><dl><dt><span class="section"><a href="thread/time.html#thread.time.deprecated">Deprecated</a></span></dt></dl></dd>
<dt><span class="section"><a href="thread/emulations.html">Emulations</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/emulations.html#thread.emulations.delete"><code class="computeroutput"><span class="special">=</span><span class="keyword">delete</span></code> emulation</a></span></dt>
<dt><span class="section"><a href="thread/emulations.html#thread.emulations.move">Move semantics</a></span></dt>
<dt><span class="section"><a href="thread/emulations.html#thread.emulations.bool_explicit_conversion">Bool explicit
conversion</a></span></dt>
<dt><span class="section"><a href="thread/emulations.html#thread.emulations.scoped_enums">Scoped Enums</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="thread/acknowledgements.html">Acknowledgments</a></span></dt>
<dt><span class="section"><a href="thread/compliance.html">Conformance and Extension</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="thread/compliance.html#thread.compliance.cpp11">C++11 standard Thread library</a></span></dt>
<dt><span class="section"><a href="thread/compliance.html#thread.compliance.cxx14">C++14 standard Thread library
- accepted changes</a></span></dt>
<dt><span class="section"><a href="thread/compliance.html#thread.compliance.cxx1y">C++14 TS Extensions for Concurrency
V1 </a></span></dt>
<dt><span class="section"><a href="thread/compliance.html#thread.compliance.cxx1y0">C++1z TS Concurrency - On going
proposals</a></span></dt>
</dl></dd>
</dl>
</div>
<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="thread.overview"></a><a class="link" href="thread.html#thread.overview" title="Overview">Overview</a>
</h2></div></div></div>
<p>
<span class="bold"><strong>Boost.Thread</strong></span> enables the use of multiple threads
of execution with shared data in portable C++ code. It provides classes and
functions for managing the threads themselves, along with others for synchronizing
data between the threads or providing separate copies of data specific to individual
threads.
</p>
<p>
The <span class="bold"><strong>Boost.Thread</strong></span> library was originally written
and designed by William E. Kempf (version 1).
</p>
<p>
Anthony Williams version (version 2) was a major rewrite designed to closely
follow the proposals presented to the C++ Standards Committee, in particular
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2497.html" target="_top">N2497</a>,
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2320.html" target="_top">N2320</a>,
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2184.html" target="_top">N2184</a>,
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2139.html" target="_top">N2139</a>,
and <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2094.html" target="_top">N2094</a>
</p>
<p>
Vicente J. Botet Escriba started (version 3) the adaptation to comply with
the accepted Thread C++11 library (Make use of Boost.Chrono and Boost.Move)
and the <a href="http://home.roadrunner.com/~hinnant/bloomington/shared_mutex.html" target="_top">Shared
Locking</a> Howard Hinnant proposal except for the upward conversions.
Some minor non-standard features have been added also as thread attributes,
reverse_lock, shared_lock_guard.
</p>
<p>
In order to use the classes and functions described here, you can either include
the specific headers specified by the descriptions of each class or function,
or include the master thread library header:
</p>
<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">thread</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
</pre>
<p>
which includes all the other headers in turn.
</p>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"><p><small>Last revised: April 09, 2019 at 19:42:31 GMT</small></p></td>
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