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<title>Chapter 16. Boost.Interprocess</title>
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<div class="chapter">
<div class="titlepage"><div>
<div><h2 class="title">
<a name="interprocess"></a>Chapter 16. Boost.Interprocess</h2></div>
<div><div class="author"><h3 class="author">
<span class="firstname">Ion</span> <span class="surname">Gaztanaga</span>
</h3></div></div>
<div><p class="copyright">Copyright © 2005-2015 Ion Gaztanaga</p></div>
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<a name="interprocess.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>)
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<div class="toc">
<p><b>Table of Contents</b></p>
<dl class="toc">
<dt><span class="section"><a href="interprocess.html#interprocess.intro">Introduction</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess.html#interprocess.intro.introduction_building_interprocess">Building
Boost.Interprocess</a></span></dt>
<dt><span class="section"><a href="interprocess.html#interprocess.intro.tested_compilers">Tested compilers</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/quick_guide.html">Quick Guide for the Impatient</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/quick_guide.html#interprocess.quick_guide.qg_memory_pool">Using shared
memory as a pool of unnamed memory blocks</a></span></dt>
<dt><span class="section"><a href="interprocess/quick_guide.html#interprocess.quick_guide.qg_named_interprocess">Creating
named shared memory objects</a></span></dt>
<dt><span class="section"><a href="interprocess/quick_guide.html#interprocess.quick_guide.qg_offset_ptr">Using an offset
smart pointer for shared memory</a></span></dt>
<dt><span class="section"><a href="interprocess/quick_guide.html#interprocess.quick_guide.qg_interprocess_container">Creating
vectors in shared memory</a></span></dt>
<dt><span class="section"><a href="interprocess/quick_guide.html#interprocess.quick_guide.qg_interprocess_map">Creating
maps in shared memory</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/some_basic_explanations.html">Some basic explanations</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/some_basic_explanations.html#interprocess.some_basic_explanations.processes_and_threads">Processes
And Threads</a></span></dt>
<dt><span class="section"><a href="interprocess/some_basic_explanations.html#interprocess.some_basic_explanations.sharing_information">Sharing
information between processes</a></span></dt>
<dt><span class="section"><a href="interprocess/some_basic_explanations.html#interprocess.some_basic_explanations.persistence">Persistence
Of Interprocess Mechanisms</a></span></dt>
<dt><span class="section"><a href="interprocess/some_basic_explanations.html#interprocess.some_basic_explanations.names">Names Of
Interprocess Mechanisms</a></span></dt>
<dt><span class="section"><a href="interprocess/some_basic_explanations.html#interprocess.some_basic_explanations.constructors_destructors_and_resource_lifetime">Constructors,
destructors and lifetime of Interprocess named resources</a></span></dt>
<dt><span class="section"><a href="interprocess/some_basic_explanations.html#interprocess.some_basic_explanations.permissions">Permissions</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/sharedmemorybetweenprocesses.html">Sharing memory
between processes</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/sharedmemorybetweenprocesses.html#interprocess.sharedmemorybetweenprocesses.sharedmemory">Shared
memory</a></span></dt>
<dt><span class="section"><a href="interprocess/sharedmemorybetweenprocesses.html#interprocess.sharedmemorybetweenprocesses.mapped_file">Memory
Mapped Files</a></span></dt>
<dt><span class="section"><a href="interprocess/sharedmemorybetweenprocesses.html#interprocess.sharedmemorybetweenprocesses.mapped_region">More
About Mapped Regions</a></span></dt>
<dt><span class="section"><a href="interprocess/sharedmemorybetweenprocesses.html#interprocess.sharedmemorybetweenprocesses.mapped_region_object_limitations">Limitations
When Constructing Objects In Mapped Regions</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/offset_ptr.html">Mapping Address Independent Pointer:
offset_ptr</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html">Synchronization
mechanisms</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.synchronization_mechanisms_overview">Synchronization
mechanisms overview</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.mutexes">Mutexes</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.conditions">Conditions</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.semaphores">Semaphores</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.sharable_upgradable_mutexes">Sharable
and Upgradable Mutexes</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.lock_conversions">Lock
Transfers Through Move Semantics</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.file_lock">File
Locks</a></span></dt>
<dt><span class="section"><a href="interprocess/synchronization_mechanisms.html#interprocess.synchronization_mechanisms.message_queue">Message
Queue</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/managed_memory_segments.html">Managed Memory Segments</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/managed_memory_segments.html#interprocess.managed_memory_segments.making_ipc_easy">Making
Interprocess Data Communication Easy</a></span></dt>
<dt><span class="section"><a href="interprocess/managed_memory_segments.html#interprocess.managed_memory_segments.managed_shared_memory">Managed
Shared Memory</a></span></dt>
<dt><span class="section"><a href="interprocess/managed_memory_segments.html#interprocess.managed_memory_segments.managed_mapped_files">Managed
Mapped File</a></span></dt>
<dt><span class="section"><a href="interprocess/managed_memory_segments.html#interprocess.managed_memory_segments.managed_memory_segment_features">Managed
Memory Segment Features</a></span></dt>
<dt><span class="section"><a href="interprocess/managed_memory_segments.html#interprocess.managed_memory_segments.managed_memory_segment_advanced_features">Managed
Memory Segment Advanced Features</a></span></dt>
<dt><span class="section"><a href="interprocess/managed_memory_segments.html#interprocess.managed_memory_segments.managed_heap_memory_external_buffer">Managed
Heap Memory And Managed External Buffer</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/allocators_containers.html">Allocators, containers
and memory allocation algorithms</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/allocators_containers.html#interprocess.allocators_containers.allocator_introduction">Introduction
to Interprocess allocators</a></span></dt>
<dt><span class="section"><a href="interprocess/allocators_containers.html#interprocess.allocators_containers.stl_allocators_segregated_storage">Segregated
storage node allocators</a></span></dt>
<dt><span class="section"><a href="interprocess/allocators_containers.html#interprocess.allocators_containers.stl_allocators_adaptive">Adaptive
pool node allocators</a></span></dt>
<dt><span class="section"><a href="interprocess/allocators_containers.html#interprocess.allocators_containers.containers_explained">Interprocess
and containers in managed memory segments</a></span></dt>
<dt><span class="section"><a href="interprocess/allocators_containers.html#interprocess.allocators_containers.additional_containers">Boost
containers compatible with Boost.Interprocess</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/memory_algorithms.html">Memory allocation algorithms</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/memory_algorithms.html#interprocess.memory_algorithms.simple_seq_fit">simple_seq_fit:
A simple shared memory management algorithm</a></span></dt>
<dt><span class="section"><a href="interprocess/memory_algorithms.html#interprocess.memory_algorithms.rbtree_best_fit">rbtree_best_fit:
Best-fit logarithmic-time complexity allocation</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/streams.html">Direct iostream formatting: vectorstream
and bufferstream</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/streams.html#interprocess.streams.vectorstream">Formatting directly
in your character vector: vectorstream</a></span></dt>
<dt><span class="section"><a href="interprocess/streams.html#interprocess.streams.bufferstream">Formatting directly
in your character buffer: bufferstream</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/interprocess_smart_ptr.html">Ownership smart pointers</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/interprocess_smart_ptr.html#interprocess.interprocess_smart_ptr.intrusive_ptr">Intrusive
pointer</a></span></dt>
<dt><span class="section"><a href="interprocess/interprocess_smart_ptr.html#interprocess.interprocess_smart_ptr.scoped_ptr">Scoped
pointer</a></span></dt>
<dt><span class="section"><a href="interprocess/interprocess_smart_ptr.html#interprocess.interprocess_smart_ptr.shared_ptr">Shared
pointer and weak pointer</a></span></dt>
<dt><span class="section"><a href="interprocess/interprocess_smart_ptr.html#interprocess.interprocess_smart_ptr.unique_ptr">Unique
pointer</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/architecture.html">Architecture and internals</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/architecture.html#interprocess.architecture.basic_guidelines">Basic guidelines</a></span></dt>
<dt><span class="section"><a href="interprocess/architecture.html#interprocess.architecture.architecture_algorithm_to_managed">From
the memory algorithm to the managed segment</a></span></dt>
<dt><span class="section"><a href="interprocess/architecture.html#interprocess.architecture.allocators_containers">Allocators
and containers</a></span></dt>
<dt><span class="section"><a href="interprocess/architecture.html#interprocess.architecture.performance">Performance of
Boost.Interprocess</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/customizing_interprocess.html">Customizing Boost.Interprocess</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/customizing_interprocess.html#interprocess.customizing_interprocess.custom_interprocess_alloc">Writing
a new shared memory allocation algorithm</a></span></dt>
<dt><span class="section"><a href="interprocess/customizing_interprocess.html#interprocess.customizing_interprocess.custom_allocators">Building
custom STL compatible allocators for Boost.Interprocess</a></span></dt>
<dt><span class="section"><a href="interprocess/customizing_interprocess.html#interprocess.customizing_interprocess.custom_indexes">Building
custom indexes</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html">Acknowledgements,
notes and links</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows">Notes
for Windows users</a></span></dt>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_linux">Notes
for Linux users</a></span></dt>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_freebsd">Notes
for FreeBSD users</a></span></dt>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html#interprocess.acknowledgements_notes.thanks_to">Thanks
to...</a></span></dt>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes">Release
Notes</a></span></dt>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links">Books
and interesting links</a></span></dt>
<dt><span class="section"><a href="interprocess/acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements">Future
improvements...</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="interprocess/indexes_reference.html">Indexes and Reference</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="interprocess/indexes_reference.html#interprocess.indexes_reference.index">Indexes</a></span></dt>
<dt><span class="section"><a href="interprocess/indexes_reference.html#boost_interprocess_header_reference">Boost.Interprocess Header Reference</a></span></dt>
</dl></dd>
</dl>
</div>
<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="interprocess.intro"></a><a class="link" href="interprocess.html#interprocess.intro" title="Introduction">Introduction</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="interprocess.html#interprocess.intro.introduction_building_interprocess">Building
Boost.Interprocess</a></span></dt>
<dt><span class="section"><a href="interprocess.html#interprocess.intro.tested_compilers">Tested compilers</a></span></dt>
</dl></div>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> simplifies the use of common
interprocess communication and synchronization mechanisms and offers a wide
range of them:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Shared memory.
</li>
<li class="listitem">
Memory-mapped files.
</li>
<li class="listitem">
Semaphores, mutexes, condition variables and upgradable mutex types to
place them in shared memory and memory mapped files.
</li>
<li class="listitem">
Named versions of those synchronization objects, similar to UNIX/Windows
sem_open/CreateSemaphore API.
</li>
<li class="listitem">
File locking.
</li>
<li class="listitem">
Relative pointers.
</li>
<li class="listitem">
Message queues.
</li>
</ul></div>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> also offers higher-level
interprocess mechanisms to allocate dynamically portions of a shared memory
or a memory mapped file (in general, to allocate portions of a fixed size memory
segment). Using these mechanisms, <span class="bold"><strong>Boost.Interprocess</strong></span>
offers useful tools to construct C++ objects, including STL-like containers,
in shared memory and memory mapped files:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Dynamic creation of anonymous and named objects in a shared memory or memory
mapped file.
</li>
<li class="listitem">
STL-like containers compatible with shared memory/memory-mapped files.
</li>
<li class="listitem">
STL-like allocators ready for shared memory/memory-mapped files implementing
several memory allocation patterns (like pooling).
</li>
</ul></div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.intro.introduction_building_interprocess"></a><a class="link" href="interprocess.html#interprocess.intro.introduction_building_interprocess" title="Building Boost.Interprocess">Building
Boost.Interprocess</a>
</h3></div></div></div>
<p>
There is no need to compile <span class="bold"><strong>Boost.Interprocess</strong></span>,
since it's a header only library. Just include your Boost header directory
in your compiler include path.
</p>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> depends on <a href="http://www.boost.org/libs/date_time/" target="_top"><span class="bold"><strong>Boost.DateTime</strong></span></a>, which needs separate compilation.
However, the subset used by <span class="bold"><strong>Boost.Interprocess</strong></span>
does not need any separate compilation so the user can define <code class="computeroutput"><span class="identifier">BOOST_DATE_TIME_NO_LIB</span></code> to avoid Boost from
trying to automatically link the <span class="bold"><strong>Boost.DateTime</strong></span>.
</p>
<p>
In POSIX systems, <span class="bold"><strong>Boost.Interprocess</strong></span> uses
pthread system calls to implement classes like mutexes, condition variables,
etc... In some operating systems, these POSIX calls are implemented in separate
libraries that are not automatically linked by the compiler. For example,
in some Linux systems POSIX pthread functions are implemented in <code class="computeroutput"><span class="identifier">librt</span><span class="special">.</span><span class="identifier">a</span></code> library, so you might need to add that
library when linking an executable or shared library that uses <span class="bold"><strong>Boost.Interprocess</strong></span>. If you obtain linking errors related
to those pthread functions, please revise your system's documentation to
know which library implements them.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.intro.tested_compilers"></a><a class="link" href="interprocess.html#interprocess.intro.tested_compilers" title="Tested compilers">Tested compilers</a>
</h3></div></div></div>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> has been tested in the
following compilers/platforms:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Visual C++ >= 7.1.
</li>
<li class="listitem">
GCC >= 4.1.
</li>
</ul></div>
<div class="warning"><table border="0" summary="Warning">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Warning]" src="../../doc/src/images/warning.png"></td>
<th align="left">Warning</th>
</tr>
<tr><td align="left" valign="top"><p>
GCC < 4.3 and MSVC < 9.0 are deprecated and will be removed in the
next version.
</p></td></tr>
</table></div>
</div>
</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: December 08, 2022 at 01:12:24 GMT</small></p></td>
<td align="right"><div class="copyright-footer"></div></td>
</tr></table>
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