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<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="interprocess.acknowledgements_notes"></a><a class="link" href="acknowledgements_notes.html" title="Acknowledgements, notes and links">Acknowledgements,
notes and links</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows">Notes
for Windows users</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_linux">Notes
for Linux users</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.thanks_to">Thanks
to...</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes">Release
Notes</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links">Books
and interesting links</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements">Future
improvements...</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.notes_windows"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows" title="Notes for Windows users">Notes
for Windows users</a>
</h3></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows.notes_windows_com_init">COM
Initialization</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows.notes_windows_shm_folder">Shared
memory emulation folder</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows.boost_use_windows_h">BOOST_USE_WINDOWS_H
support</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.notes_windows.notes_windows_com_init"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows.notes_windows_com_init" title="COM Initialization">COM
Initialization</a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> uses the Windows COM
library to implement some features and initializes it with concurrency
model <code class="computeroutput"><span class="identifier">COINIT_APARTMENTTHREADED</span></code>.
If the COM library was already initialized by the calling thread for another
concurrency model, <span class="bold"><strong>Boost.Interprocess</strong></span>
handles this gracefully and uses COM calls for the already initialized
model. If for some reason, you want <span class="bold"><strong>Boost.Interprocess</strong></span>
to initialize the COM library with another model, define the macro <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_WINDOWS_COINIT_MODEL</span></code>
before including <span class="bold"><strong>Boost.Interprocess</strong></span> to
one of these values:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<code class="computeroutput"><span class="identifier">COINIT_APARTMENTTHREADED_BIPC</span></code>
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">COINIT_MULTITHREADED_BIPC</span></code>
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">COINIT_DISABLE_OLE1DDE_BIPC</span></code>
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">COINIT_SPEED_OVER_MEMORY_BIPC</span></code>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.notes_windows.notes_windows_shm_folder"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows.notes_windows_shm_folder" title="Shared memory emulation folder">Shared
memory emulation folder</a>
</h4></div></div></div>
<p>
Shared memory (<code class="computeroutput"><span class="identifier">shared_memory_object</span></code>)
is implemented in windows using memory mapped files, placed in a shared
directory in the shared documents folder (<code class="computeroutput"><span class="identifier">SOFTWARE</span><span class="special">\</span><span class="identifier">Microsoft</span><span class="special">\</span><span class="identifier">Windows</span><span class="special">\</span><span class="identifier">CurrentVersion</span><span class="special">\</span><span class="identifier">Explorer</span><span class="special">\</span><span class="identifier">Shell</span> <span class="identifier">Folders</span><span class="special">\</span><span class="identifier">Common</span> <span class="identifier">AppData</span></code>).
This directory name is the last bootup time obtained via COM calls (if
<code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_BOOTSTAMP_IS_LASTBOOTUPTIME</span></code>)
defined or searching the system log for a startup event (the default implementation),
so that each bootup shared memory is created in a new folder obtaining
kernel persistence shared memory.
</p>
<p>
If using <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_BOOTSTAMP_IS_LASTBOOTUPTIME</span></code>,
due to COM implementation related errors, in Boost 1.48 &amp; Boost 1.49
the bootup-time folder was dumped and files were directly created in shared
documents folder, reverting to filesystem persistence shared memory. Boost
1.50 fixed those issues and recovered bootup time directory and kernel
persistence. If you need to reproduce Boost 1.48 &amp; Boost 1.49 behaviour
to communicate with applications compiled with that version, comment <code class="computeroutput"><span class="preprocessor">#define</span> <span class="identifier">BOOST_INTERPROCESS_HAS_KERNEL_BOOTTIME</span></code>
directive in the Windows configuration part of <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">interprocess</span><span class="special">/</span><span class="identifier">detail</span><span class="special">/</span><span class="identifier">workaround</span><span class="special">.</span><span class="identifier">hpp</span></code>.
</p>
<p>
If using the default implementation, (<code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_BOOTSTAMP_IS_LASTBOOTUPTIME</span></code>
undefined) and the Startup Event is not found, this might be due to some
buggy software that floods or erases the event log.
</p>
<p>
In any error case (shared documents folder is not defined or bootup time
could not be obtained, the library throws an error. You still can use
<span class="bold"><strong>Boost.Interprocess</strong></span> definining your own
directory as the shared directory. Just define <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_SHARED_DIR_PATH</span></code>
when using the library and that path will be used to place shared memory
files.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.notes_windows.boost_use_windows_h"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_windows.boost_use_windows_h" title="BOOST_USE_WINDOWS_H support">BOOST_USE_WINDOWS_H
support</a>
</h4></div></div></div>
<p>
If <code class="computeroutput"><span class="identifier">BOOST_USE_WINDOWS_H</span></code>
is defined, &lt;windows.h&gt; and other windows SDK files are included,
otherwise the library declares needed functions and structures to reduce
the impact of including those heavy headers.
</p>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.notes_linux"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_linux" title="Notes for Linux users">Notes
for Linux users</a>
</h3></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_linux.notes_linux_shm_folder">Shared
memory emulation folder</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_linux.notes_linux_overcommit">Overcommit</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.notes_linux.notes_linux_shm_folder"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_linux.notes_linux_shm_folder" title="Shared memory emulation folder">Shared
memory emulation folder</a>
</h4></div></div></div>
<p>
On systems without POSIX shared memory support shared memory objects are
implemented as memory mapped files, using a directory placed in "/tmp"
that can include (if <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_HAS_KERNEL_BOOTTIME</span></code>
is defined) the last bootup time (if the Os supports it). As in Windows,
in any error case obtaining this directory the library throws an error
. You still can use <span class="bold"><strong>Boost.Interprocess</strong></span>
definining your own directory as the shared directory. Just define <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_SHARED_DIR_PATH</span></code> when
using the library and that path will be used to place shared memory files.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.notes_linux.notes_linux_overcommit"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.notes_linux.notes_linux_overcommit" title="Overcommit">Overcommit</a>
</h4></div></div></div>
<p>
The committed address space is the total amount of virtual memory (swap
or physical memory/RAM) that the kernel might have to supply if all applications
decide to access all of the memory they've requested from the kernel. By
default, Linux allows processes to commit more virtual memory than available
in the system. If that memory is not accessed, no physical memory + swap
is actually used.
</p>
<p>
The reason for this behaviour is that Linux tries to optimize memory usage
on forked processes; fork() creates a full copy of the process space, but
with overcommitted memory, in this new forked instance only pages which
have been written to actually need to be allocated by the kernel. If applications
access more memory than available, then the kernel must free memory in
the hard way: the OOM (Out Of Memory)-killer picks some processes to kill
in order to recover memory.
</p>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> has no way to change
this behaviour and users might suffer the OOM-killer when accessing shared
memory. According to the <a href="http://www.kernel.org/doc/Documentation/vm/overcommit-accounting" target="_top">Kernel
documentation</a>, the Linux kernel supports several overcommit modes.
If you need non-kill guarantees in your application, you should change
this overcommit behaviour.
</p>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.thanks_to"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.thanks_to" title="Thanks to...">Thanks
to...</a>
</h3></div></div></div>
<p>
Many people have contributed with ideas and revisions, so this is the place
to thank them:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Thanks to all people who have shown interest in the library and have
downloaded and tested the snapshots.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Francis Andre</strong></span> and <span class="bold"><strong>Anders Hybertz</strong></span> for their ideas and suggestions.
Many of them are not implemented yet but I hope to include them when
library gets some stability.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Matt Doyle</strong></span>, <span class="bold"><strong>Steve
LoBasso</strong></span>, <span class="bold"><strong>Glenn Schrader</strong></span>,
<span class="bold"><strong>Hiang Swee Chiang</strong></span>, <span class="bold"><strong>Phil
Endecott</strong></span>, <span class="bold"><strong>Rene Rivera</strong></span>, <span class="bold"><strong>Harold Pirtle</strong></span>, <span class="bold"><strong>Paul Ryan</strong></span>,
<span class="bold"><strong>Shumin Wu</strong></span>, <span class="bold"><strong>Michal
Wozniak</strong></span>, <span class="bold"><strong>Peter Johnson</strong></span>,
<span class="bold"><strong>Alex Ott</strong></span>, <span class="bold"><strong>Shane
Guillory</strong></span>, <span class="bold"><strong>Steven Wooding</strong></span>
and <span class="bold"><strong>Kim Barrett</strong></span> for their bug fixes
and library testing.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Martin Adrian</strong></span> who suggested
the use of Interprocess framework for user defined buffers.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Synge Todo</strong></span> for his boostbook-doxygen
patch to improve Interprocess documentation.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Olaf Krzikalla</strong></span> for his Intrusive
library. I have taken some ideas to improve red black tree implementation
from his library.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Daniel James</strong></span> for his unordered_map/set
family and his help with allocators. His great unordered implementation
has been a reference to design exception safe containers.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Howard Hinnant</strong></span> for his amazing
help, specially explaining allocator swapping, move semantics and for
developing upgradable mutex and lock transfer features.
</li>
<li class="listitem">
Thanks to <span class="bold"><strong>Pavel Vozenilek</strong></span> for his continuous
review process, suggestions, code and help. He is the major supporter
of Interprocess library. The library has grown with his many and great
advices.
</li>
<li class="listitem">
And finally, thank you to all Boosters. <span class="bold"><strong>Long live
to C++!</strong></span>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.release_notes"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes" title="Release Notes">Release
Notes</a>
</h3></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_58_00">Boost
1.58 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_57_00">Boost
1.57 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_56_00">Boost
1.56 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_55_00">Boost
1.55 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_54_00">Boost
1.54 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_53_00">Boost
1.53 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_52_00">Boost
1.52 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_51_00">Boost
1.51 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_50_00">Boost
1.50 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_49_00">Boost
1.49 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_48_00">Boost
1.48 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_46_00">Boost
1.46 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_45_00">Boost
1.45 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_41_00">Boost
1.41 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_40_00">Boost
1.40 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_39_00">Boost
1.39 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_38_00">Boost
1.38 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_37_00">Boost
1.37 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_36_00">Boost
1.36 Release</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_35_00">Boost
1.35 Release</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_58_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_58_00" title="Boost 1.58 Release">Boost
1.58 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Reduced some compile-time dependencies. Updated to Boost.Container
changes.
</li>
<li class="listitem">
Fixed bugs:
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; "><li class="listitem">
<a href="https://github.com/boostorg/interprocess/pull/13" target="_top">GitHub
Pull #13 (<span class="emphasis"><em>"haiku: we don't have XSI shared memory,
so don't try to use it"</em></span>)</a>.
</li></ul></div>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_57_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_57_00" title="Boost 1.57 Release">Boost
1.57 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Removed <code class="computeroutput"><span class="identifier">unique_ptr</span></code>,
now forwards boost::interprocess::unique_ptr to the general purpose
<code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">movelib</span><span class="special">::</span><span class="identifier">unique_ptr</span></code> class from <span class="bold"><strong>Boost.Move</strong></span>.
This implementation is closer to the standard <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">unique_ptr</span></code>
implementation and it's better maintained.
</li>
<li class="listitem">
Fixed bugs:
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/10262" target="_top">Trac
#10262 (<span class="emphasis"><em>"AIX 6.1 bug with variable definition
hz"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/10229" target="_top">Trac
#10229 (<span class="emphasis"><em>"Compiling errors in interprocess\detail\os_file_functions.hpp"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/10506" target="_top">Trac
#10506 (<span class="emphasis"><em>"Infinite loop in create_or_open_file"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://github.com/boostorg/interprocess/pull/11" target="_top">GitHub
Pull #11 (<span class="emphasis"><em>"Compile fix for BOOST_USE_WINDOWS_H"</em></span>)</a>.
</li>
</ul></div>
</li>
<li class="listitem">
Reorganized Doxygen marks to obtain a better header reference.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_56_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_56_00" title="Boost 1.56 Release">Boost
1.56 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fixed bugs:
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9221" target="_top">Trac
#9221 (<span class="emphasis"><em>"message_queue deadlock on linux"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9226" target="_top">Trac
#9226 (<span class="emphasis"><em>"On some computers, Common Appdata is empty
in registry, so boost interprocess cannot work"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9262" target="_top">Trac
#9262 (<span class="emphasis"><em>"windows_intermodule_singleton breaks when
calling a Debug dll from a Release executable"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9284" target="_top">Trac
#9284 (<span class="emphasis"><em>"WaitForSingleObject(mutex) must handle
WAIT_ABANDONED"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9285" target="_top">Trac
#9285 (<span class="emphasis"><em>"CreateMutex returns NULL if fails"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9288" target="_top">Trac
#9288 (<span class="emphasis"><em>"timed_wait does not check if it has expired"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9408" target="_top">Trac
#9408 (<span class="emphasis"><em>"Android does not support XSI_SHARED_MEMORY_OBJECTS"</em></span></a>).
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9729" target="_top">Trac
#9729 (<span class="emphasis"><em>"crash on managed_external_buffer object
construction"</em></span></a>).
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9767" target="_top">Trac
#9767 (<span class="emphasis"><em>"bootstamp generation causes error in case
of corrupt Windows Event Log"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9835" target="_top">Trac
#9835 (<span class="emphasis"><em>"Boost Interprocess fails to compile with
Android NDK GCC 4.8, -Werror=unused-variable"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9911" target="_top">Trac
#9911 (<span class="emphasis"><em>"get_tmp_base_dir(...) failure"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/9946" target="_top">Trac
#9946 (<span class="emphasis"><em>"ret_ptr uninitialized in init_atomic_func,
fini_atomic_func"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/10011" target="_top">Trac
#10011 (<span class="emphasis"><em>"segment_manager::find( unique_instance_t*
) fails to compile"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/10021" target="_top">Trac
#10021 (<span class="emphasis"><em>"Interprocess and BOOST_USE_WINDOWS_H"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://svn.boost.org/trac/boost/ticket/10230" target="_top">Trac
#10230 (<span class="emphasis"><em>"No Sleep in interprocess::winapi"</em></span>)</a>.
</li>
<li class="listitem">
<a href="https://github.com/boostorg/interprocess/pull/2" target="_top">GitHub
Pull #2</a> (<span class="emphasis"><em>"Provide support for the Cray
C++ compiler. The Cray compiler defines __GNUC__"</em></span>]).
</li>
<li class="listitem">
<a href="https://github.com/boostorg/interprocess/pull/3" target="_top">GitHub
Pull #3</a> (<span class="emphasis"><em>"Fix/mingw interprocess_exception
throw in file_wrapper::priv_open_or_create"</em></span>]).
</li>
</ul></div>
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: <a href="https://svn.boost.org/trac/boost/ticket/9221" target="_top">#9221</a>
showed that <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_MSG_QUEUE_CIRCULAR_INDEX</span></code>
option of message queue, was completely broken so an ABI break was
necessary to have a working implementation.
</li>
<li class="listitem">
Simplified, refactored and unified (timed_)lock code based on try_lock().
There were several bugs when handling timeout expirations.
</li>
<li class="listitem">
Changed the implementation of condition variables' destructors to allow
POSIX semantics (the condition variable can be destroyed after all
waiting threads have been woken up)..
</li>
<li class="listitem">
Added <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_SHARED_DIR_PATH</span></code>
option to define the shared directory used to place shared memory objects
when implemented as memory mapped files.
</li>
<li class="listitem">
Added support for <code class="computeroutput"><span class="identifier">BOOST_USE_WINDOWS_H</span></code>.
When this macro is defined Interprocess does not declare used Windows
API function and types, includes all needed windows SDK headers and
uses types and functions declared by the Windows SDK.
</li>
<li class="listitem">
Added <code class="computeroutput"><span class="identifier">get_size</span></code> to
<code class="computeroutput">::boost:interprocess:windows_shared_memory</code>.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_55_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_55_00" title="Boost 1.55 Release">Boost
1.55 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/7156" target="_top">#7156</a>
(<span class="emphasis"><em>"interprocess buffer streams leak memory on construction"</em></span>]).
<a href="https://svn.boost.org/trac/boost/ticket/7164" target="_top">#7164</a>
(<span class="emphasis"><em>"Two potential bugs with b::int::vector of b::i::weak_ptr"</em></span>]).
<a href="https://svn.boost.org/trac/boost/ticket/7860" target="_top">#7860</a>
(<span class="emphasis"><em>"smart_ptr's yield_k and spinlock utilities can improve
spinlock-based sychronization primitives"</em></span>]). <a href="https://svn.boost.org/trac/boost/ticket/8277" target="_top">#8277</a> (<span class="emphasis"><em>"docs
for named_mutex erroneously refer to interprocess_mutex"</em></span>]).
<a href="https://svn.boost.org/trac/boost/ticket/8976" target="_top">#8976</a>
(<span class="emphasis"><em>"shared_ptr fails to compile if used with a scoped_allocator"</em></span>]).
<a href="https://svn.boost.org/trac/boost/ticket/9008" target="_top">#9008</a>
(<span class="emphasis"><em>"conditions variables fast enough only when opening
a multiprocess browser"</em></span>]). <a href="https://svn.boost.org/trac/boost/ticket/9065" target="_top">#9065</a>
(<span class="emphasis"><em>"atomic_cas32 inline assembly wrong on ppc32"</em></span>]).
<a href="https://svn.boost.org/trac/boost/ticket/9073" target="_top">#9073</a>
(<span class="emphasis"><em>"Conflict names 'realloc'"</em></span>]).
</li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_54_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_54_00" title="Boost 1.54 Release">Boost
1.54 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Added support for platform-specific flags to mapped_region (ticket
#8030)
</li>
<li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/7484" target="_top">#7484</a>,
<a href="https://svn.boost.org/trac/boost/ticket/7598" target="_top">#7598</a>,
<a href="https://svn.boost.org/trac/boost/ticket/7682" target="_top">#7682</a>,
<a href="https://svn.boost.org/trac/boost/ticket/7923" target="_top">#7923</a>,
<a href="https://svn.boost.org/trac/boost/ticket/7924" target="_top">#7924</a>,
<a href="https://svn.boost.org/trac/boost/ticket/7928" target="_top">#7928</a>,
<a href="https://svn.boost.org/trac/boost/ticket/7936" target="_top">#7936</a>,
<a href="https://svn.boost.org/trac/boost/ticket/8521" target="_top">#8521</a>,
<a href="https://svn.boost.org/trac/boost/ticket/8595" target="_top">#8595</a>.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: Changed bootstamp function
in Windows to use EventLog service start time as system bootup time.
Previously used <code class="computeroutput"><span class="identifier">LastBootupTime</span></code>
from WMI was unstable with time synchronization and hibernation and
unusable in practice. If you really need to obtain pre Boost 1.54 behaviour
define <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_BOOTSTAMP_IS_LASTBOOTUPTIME</span></code>
from command line or <code class="computeroutput"><span class="identifier">detail</span><span class="special">/</span><span class="identifier">workaround</span><span class="special">.</span><span class="identifier">hpp</span></code>.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_53_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_53_00" title="Boost 1.53 Release">Boost
1.53 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fixed GCC -Wshadow warnings.
</li>
<li class="listitem">
Experimental multiple allocation interface improved and changed again.
Still unstable.
</li>
<li class="listitem">
Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: changed node pool allocators
internals for improved efficiency.
</li>
<li class="listitem">
Fixed bug <a href="https://svn.boost.org/trac/boost/ticket/7795" target="_top">#7795</a>.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_52_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_52_00" title="Boost 1.52 Release">Boost
1.52 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Added <code class="computeroutput"><span class="identifier">shrink_by</span></code> and
<code class="computeroutput"><span class="identifier">advise</span></code> functions in
<code class="computeroutput"><span class="identifier">mapped_region</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking:</strong></span> Reimplemented <code class="computeroutput"><span class="identifier">message_queue</span></code> with a circular buffer
index (the old behavior used an ordered array, leading to excessive
copies). This should greatly increase performance but breaks ABI. Old
behaviour/ABI can be used undefining macro <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_MSG_QUEUE_CIRCULAR_INDEX</span></code>
in <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">interprocess</span><span class="special">/</span><span class="identifier">detail</span><span class="special">/</span><span class="identifier">workaround</span><span class="special">.</span><span class="identifier">hpp</span></code>
</li>
<li class="listitem">
Improved <code class="computeroutput"><span class="identifier">message_queue</span></code>
insertion time avoiding priority search for common cases (both array
and circular buffer configurations).
</li>
<li class="listitem">
Implemented <code class="computeroutput"><span class="identifier">interproces_sharable_mutex</span></code>
and <code class="computeroutput"><span class="identifier">interproces_condition_any</span></code>.
</li>
<li class="listitem">
Improved <code class="computeroutput"><span class="identifier">offset_ptr</span></code>
performance.
</li>
<li class="listitem">
Added integer overflow checks.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_51_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_51_00" title="Boost 1.51 Release">Boost
1.51 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Synchronous and asynchronous flushing for <code class="computeroutput"><span class="identifier">mapped_region</span><span class="special">::</span><span class="identifier">flush</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>Source &amp; ABI breaking</strong></span>: Removed
<code class="computeroutput"><span class="identifier">get_offset</span></code> method from
<code class="computeroutput"><span class="identifier">mapped_region</span></code> as it
has no practical utility and <code class="computeroutput"><span class="identifier">m_offset</span></code>
member was not for anything else.
</li>
<li class="listitem">
<span class="bold"><strong>Source &amp; ABI breaking</strong></span>: Removed
<code class="computeroutput"><span class="identifier">flush</span></code> from <code class="computeroutput"><span class="identifier">managed_shared_memory</span></code>. as it is unspecified
according to POSIX: <a href="http://pubs.opengroup.org/onlinepubs/009695399/functions/msync.html" target="_top"><span class="emphasis"><em>"The
effect of msync() on a shared memory object or a typed memory object
is unspecified"</em></span> </a>.
</li>
<li class="listitem">
Fixed bug <a href="https://svn.boost.org/trac/boost/ticket/7152" target="_top">#7152</a>,
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_50_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_50_00" title="Boost 1.50 Release">Boost
1.50 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/3750" target="_top">#3750</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6727" target="_top">#6727</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6648" target="_top">#6648</a>,
</li>
<li class="listitem">
Shared memory in windows has again kernel persistence: kernel bootstamp
and WMI has received some fixes and optimizations. This causes incompatibility
with Boost 1.48 and 1.49 but the user can comment <code class="computeroutput"><span class="preprocessor">#define</span>
<span class="identifier">BOOST_INTERPROCESS_HAS_KERNEL_BOOTTIME</span></code>
in the windows configuration part to get Boost 1.48 &amp; Boost 1.49
behaviour.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_49_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_49_00" title="Boost 1.49 Release">Boost
1.49 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/6531" target="_top">#6531</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6412" target="_top">#6412</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6398" target="_top">#6398</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6340" target="_top">#6340</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6319" target="_top">#6319</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6287" target="_top">#6287</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6265" target="_top">#6265</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6233" target="_top">#6233</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6147" target="_top">#6147</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6134" target="_top">#6134</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6058" target="_top">#6058</a>,
<a href="https://svn.boost.org/trac/boost/ticket/6054" target="_top">#6054</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5772" target="_top">#5772</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5738" target="_top">#5738</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5622" target="_top">#5622</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5552" target="_top">#5552</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5518" target="_top">#5518</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4655" target="_top">#4655</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4452" target="_top">#4452</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4383" target="_top">#4383</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4297" target="_top">#4297</a>.
</li>
<li class="listitem">
Fixed timed functions in mutex implementations to fulfill POSIX requirements:
<span class="emphasis"><em>Under no circumstance shall the function fail with a timeout
if the mutex can be locked immediately. The validity of the abs_timeout
parameter need not be checked if the mutex can be locked immediately.</em></span>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_48_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_48_00" title="Boost 1.48 Release">Boost
1.48 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/2796" target="_top">#2796</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4031" target="_top">#4031</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4251" target="_top">#4251</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4452" target="_top">#4452</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4895" target="_top">#4895</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5077" target="_top">#5077</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5120" target="_top">#5120</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5123" target="_top">#5123</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5230" target="_top">#5230</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5197" target="_top">#5197</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5287" target="_top">#5287</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5294" target="_top">#5294</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5306" target="_top">#5306</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5308" target="_top">#5308</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5392" target="_top">#5392</a>,
<a href="https://svn.boost.org/trac/boost/ticket/5409" target="_top">#5409</a>,
</li>
<li class="listitem">
Added support to customize offset_ptr and allow creating custom managed
segments that might be shared between 32 and 64 bit processes.
</li>
<li class="listitem">
Shared memory in windows has again filesystem lifetime: kernel bootstamp
and WMI use to get a reliable timestamp was causing a lot of trouble.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_46_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_46_00" title="Boost 1.46 Release">Boost
1.46 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/4557" target="_top">#4557</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4979" target="_top">#4979</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4907" target="_top">#4907</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4895" target="_top">#4895</a>.
</li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_45_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_45_00" title="Boost 1.45 Release">Boost
1.45 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/1080" target="_top">#1080</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3284" target="_top">#3284</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3439" target="_top">#3439</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3448" target="_top">#3448</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3582" target="_top">#3582</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3682" target="_top">#3682</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3829" target="_top">#3829</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3846" target="_top">#3846</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3914" target="_top">#3914</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3947" target="_top">#3947</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3950" target="_top">#3950</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3951" target="_top">#3951</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3985" target="_top">#3985</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4010" target="_top">#4010</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4417" target="_top">#4417</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4019" target="_top">#4019</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4039" target="_top">#4039</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4218" target="_top">#4218</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4230" target="_top">#4230</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4250" target="_top">#4250</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4297" target="_top">#4297</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4350" target="_top">#4350</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4352" target="_top">#4352</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4426" target="_top">#4426</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4516" target="_top">#4516</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4524" target="_top">#4524</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4557" target="_top">#4557</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4606" target="_top">#4606</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4685" target="_top">#4685</a>,
<a href="https://svn.boost.org/trac/boost/ticket/4694" target="_top">#4694</a>.
</li>
<li class="listitem">
Added support for standard rvalue reference move semantics (tested
on GCC 4.5 and VC10).
</li>
<li class="listitem">
Permissions can be detailed for interprocess named resources.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">mapped_region</span><span class="special">::</span><span class="identifier">flush</span></code> initiates disk flushing but
does not guarantee it's completed when returns, since it is not portable.
</li>
<li class="listitem">
FreeBSD and MacOS now use posix semaphores to implement named semaphores
and mutex.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_41_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_41_00" title="Boost 1.41 Release">Boost
1.41 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Support for POSIX shared memory in Mac OS.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: Generic <code class="computeroutput"><span class="identifier">semaphore</span></code> and <code class="computeroutput"><span class="identifier">named_semaphore</span></code>
now implemented more efficiently with atomic operations.
</li>
<li class="listitem">
More robust file opening in Windows platforms with active Anti-virus
software.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_40_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_40_00" title="Boost 1.40 Release">Boost
1.40 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Windows shared memory is created in Shared Documents folder so that
it can be shared between services and processes
</li>
<li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/2967" target="_top">#2967</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2973" target="_top">#2973</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2992" target="_top">#2992</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3138" target="_top">#3138</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3166" target="_top">#3166</a>,
<a href="https://svn.boost.org/trac/boost/ticket/3205" target="_top">#3205</a>.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_39_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_39_00" title="Boost 1.39 Release">Boost
1.39 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Added experimental <code class="computeroutput"><span class="identifier">stable_vector</span></code>
container.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">shared_memory_object</span><span class="special">::</span><span class="identifier">remove</span></code>
has now POSIX <code class="computeroutput"><span class="identifier">unlink</span></code>
semantics and <code class="computeroutput"><span class="identifier">file_mapping</span><span class="special">::</span><span class="identifier">remove</span></code>
was added to obtain POSIX <code class="computeroutput"><span class="identifier">unlink</span></code>
semantics with mapped files.
</li>
<li class="listitem">
Shared memory in windows has now kernel lifetime instead of filesystem
lifetime: shared memory will disappear when the system reboots.
</li>
<li class="listitem">
Updated move semantics.
</li>
<li class="listitem">
Fixed bugs <a href="https://svn.boost.org/trac/boost/ticket/2722" target="_top">#2722</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2729" target="_top">#2729</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2766" target="_top">#2766</a>,
<a href="https://svn.boost.org/trac/boost/ticket/1390" target="_top">#1390</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2589" target="_top">#2589</a>,
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_38_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_38_00" title="Boost 1.38 Release">Boost
1.38 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Updated documentation to show rvalue-references funcions instead of
emulation functions.
</li>
<li class="listitem">
More non-copyable classes are now movable.
</li>
<li class="listitem">
Move-constructor and assignments now leave moved object in default-constructed
state instead of just swapping contents.
</li>
<li class="listitem">
Several bugfixes ( <a href="https://svn.boost.org/trac/boost/ticket/2391" target="_top">#2391</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2431" target="_top">#2431</a>,
<a href="https://svn.boost.org/trac/boost/ticket/1390" target="_top">#1390</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2570" target="_top">#2570</a>,
<a href="https://svn.boost.org/trac/boost/ticket/2528" target="_top">#2528</a>.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_37_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_37_00" title="Boost 1.37 Release">Boost
1.37 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Containers can be used now in recursive types.
</li>
<li class="listitem">
Added <code class="computeroutput"><span class="identifier">BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION</span></code>
macro option to force the use of generic emulation code for process-shared
synchronization primitives instead of native POSIX functions.
</li>
<li class="listitem">
Added placement insertion members to containers
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">posix_time</span><span class="special">::</span><span class="identifier">pos_inf</span></code> value is now handled portably
for timed functions.
</li>
<li class="listitem">
Update some function parameters from <code class="computeroutput"><span class="identifier">iterator</span></code>
to <code class="computeroutput"><span class="identifier">const_iterator</span></code> in
containers to keep up with the draft of the next standard.
</li>
<li class="listitem">
Documentation fixes.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_36_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_36_00" title="Boost 1.36 Release">Boost
1.36 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Added anonymous shared memory for UNIX systems.
</li>
<li class="listitem">
Fixed erroneous <code class="computeroutput"><span class="keyword">void</span></code> return
types from <code class="computeroutput"><span class="identifier">flat_map</span><span class="special">::</span><span class="identifier">erase</span><span class="special">()</span></code> functions.
</li>
<li class="listitem">
Fixed missing move semantics on managed memory classes.
</li>
<li class="listitem">
Added copy_on_write and open_read_only options for shared memory and
mapped file managed classes.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: Added to <code class="computeroutput"><span class="identifier">mapped_region</span></code> the mode used to create
it.
</li>
<li class="listitem">
Corrected instantiation errors in void allocators.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">shared_ptr</span></code> is movable
and supports aliasing.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_35_00"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.release_notes.release_notes_boost_1_35_00" title="Boost 1.35 Release">Boost
1.35 Release</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Added auxiliary utilities to ease the definition and construction of
<code class="computeroutput"><a class="link" href="../boost/interprocess/shared_ptr.html" title="Class template shared_ptr">shared_ptr</a></code>,
<code class="computeroutput">weak_ptr</code>
and <code class="computeroutput"><span class="identifier">unique_ptr</span></code>. Added
explanations and examples of these smart pointers in the documentation.
</li>
<li class="listitem">
Optimized vector:
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
1) Now works with raw pointers as much as possible when using
allocators defining <code class="computeroutput"><span class="identifier">pointer</span></code>
as an smart pointer. This increases performance and improves
compilation times.
</li>
<li class="listitem">
2) A bit of metaprogramming to avoid using move_iterator when
the type has trivial copy constructor or assignment and improve
performance.
</li>
<li class="listitem">
3) Changed custom algorithms with standard ones to take advantage
of optimized standard algorithms.
</li>
<li class="listitem">
4) Removed unused code.
</li>
</ul></div>
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: Containers don't derive
from allocators, to avoid problems with allocators that might define
virtual functions with the same names as container member functions.
That would convert container functions in virtual functions and might
disallow some of them if the returned type does not lead to a covariant
return. Allocators are now stored as base classes of internal structs.
</li>
<li class="listitem">
Implemented <code class="computeroutput"><a class="link" href="../boost/interprocess/named_mutex.html" title="Class named_mutex">named_mutex</a></code>
and <code class="computeroutput"><a class="link" href="../boost/interprocess/named_semaphore.html" title="Class named_semaphore">named_semaphore</a></code>
with POSIX named semaphores in systems supporting that option. <code class="computeroutput"><a class="link" href="../boost/interprocess/named_condition.html" title="Class named_condition">named_condition</a></code>
has been accordingly changed to support interoperability with <code class="computeroutput"><a class="link" href="../boost/interprocess/named_mutex.html" title="Class named_mutex">named_mutex</a></code>.
</li>
<li class="listitem">
Reduced template bloat for node and adaptive allocators extracting
node implementation to a class that only depends on the memory algorithm,
instead of the segment manager + node size + node number...
</li>
<li class="listitem">
Fixed bug in <code class="computeroutput"><span class="identifier">mapped_region</span></code>
in UNIX when mapping address was provided but the region was mapped
in another address.
</li>
<li class="listitem">
Added <code class="computeroutput"><span class="identifier">aligned_allocate</span></code>
and <code class="computeroutput"><span class="identifier">allocate_many</span></code> functions
to managed memory segments.
</li>
<li class="listitem">
Improved documentation about managed memory segments.
</li>
<li class="listitem">
<span class="bold"><strong>Boost.Interprocess</strong></span> containers are
now documented in the Reference section.
</li>
<li class="listitem">
Correction of typos and documentation errors.
</li>
<li class="listitem">
Added <code class="computeroutput"><span class="identifier">get_instance_name</span></code>,
<code class="computeroutput"><span class="identifier">get_instance_length</span></code>
and <code class="computeroutput"><span class="identifier">get_instance_type</span></code>
functions to managed memory segments.
</li>
<li class="listitem">
Corrected suboptimal buffer expansion bug in <code class="computeroutput"><span class="identifier">rbtree_best_fit</span></code>.
</li>
<li class="listitem">
Added iteration of named and unique objects in a segment manager.
</li>
<li class="listitem">
Fixed leak in <code class="computeroutput">vector</code>.
</li>
<li class="listitem">
Added support for Solaris.
</li>
<li class="listitem">
Optimized <code class="computeroutput"><a class="link" href="../boost/interprocess/segment_manager.html" title="Class template segment_manager">segment_manager</a></code>
to avoid code bloat associated with templated instantiations.
</li>
<li class="listitem">
Fixed bug for UNIX: No slash ('/') was being added as the first character
for shared memory names, leading to errors in some UNIX systems.
</li>
<li class="listitem">
Fixed bug in VC-8.0: Broken function inlining in core offset_ptr functions.
</li>
<li class="listitem">
Code examples changed to use new BoostBook code import features.
</li>
<li class="listitem">
Added aligned memory allocation function to memory algorithms.
</li>
<li class="listitem">
Fixed bug in <code class="computeroutput"><span class="identifier">deque</span><span class="special">::</span><span class="identifier">clear</span><span class="special">()</span></code> and <code class="computeroutput"><span class="identifier">deque</span><span class="special">::</span><span class="identifier">erase</span><span class="special">()</span></code>, they were declared private.
</li>
<li class="listitem">
Fixed bug in <code class="computeroutput"><span class="identifier">deque</span><span class="special">::</span><span class="identifier">erase</span><span class="special">()</span></code>. Thanks to Steve LoBasso.
</li>
<li class="listitem">
Fixed bug in <code class="computeroutput"><span class="identifier">atomic_dec32</span><span class="special">()</span></code>. Thanks to Glenn Schrader.
</li>
<li class="listitem">
Improved (multi)map/(multi)set constructors taking iterators. Now those
have linear time if the iterator range is already sorted.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: (multi)map/(multi)set
now reduce their node size. The color bit is embedded in the parent
pointer. Now, the size of a node is the size of 3 pointers in most
systems. This optimization is activated for raw and <code class="computeroutput"><span class="identifier">offset_ptr</span></code>
pointers.
</li>
<li class="listitem">
(multi)map/(multi)set now reuse memory from old nodes in the assignment
operator.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: Implemented node-containers
based on intrusive containers. This saves code size, since many instantiations
share the same algorithms.
</li>
<li class="listitem">
Corrected code to be compilable with Visual C++ 8.0.
</li>
<li class="listitem">
Added function to zero free memory in memory algorithms and the segment
manager. This function is useful for security reasons and to improve
compression ratios for files created with <code class="computeroutput"><span class="identifier">managed_mapped_file</span></code>.
</li>
<li class="listitem">
Added support for intrusive index types in managed memory segments.
Intrusive indexes save extra memory allocations to allocate the index
since with just one allocation, we allocate room for the value, the
name and the hook to insert the object in the index.
</li>
<li class="listitem">
Created new index type: <span class="bold"><strong>iset_index</strong></span>.
It's an index based on an intrusive set (rb-tree).
</li>
<li class="listitem">
Created new index type: <span class="bold"><strong>iunordered_set_index</strong></span>.
It's an index based on a pseudo-intrusive unordered set (hash table).
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: The intrusive index
<span class="bold"><strong>iset_index</strong></span> is now the default index
type.
</li>
<li class="listitem">
Optimized vector to take advantage of <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_trivial_destructor</span></code>.
This optimization avoids calling destructors of elements that have
a trivial destructor.
</li>
<li class="listitem">
Optimized vector to take advantage of <code class="computeroutput"><span class="identifier">has_trivial_destructor_after_move</span></code>
trait. This optimization avoids calling destructors of elements that
have a trivial destructor if the element has been moved (which is the
case of many movable types). This trick was provided by Howard Hinnant.
</li>
<li class="listitem">
Added security check to avoid integer overflow bug in allocators and
named construction functions.
</li>
<li class="listitem">
Added alignment checks to forward and backwards expansion functions.
</li>
<li class="listitem">
Fixed bug in atomic functions for PPC.
</li>
<li class="listitem">
Fixed race-condition error when creating and opening a managed segment.
</li>
<li class="listitem">
Added adaptive pools.
</li>
<li class="listitem">
<span class="bold"><strong>Source breaking</strong></span>: Changed node allocators'
template parameter order to make them easier to use.
</li>
<li class="listitem">
Added support for native windows shared memory.
</li>
<li class="listitem">
Added more tests.
</li>
<li class="listitem">
Corrected the presence of private functions in the reference section.
</li>
<li class="listitem">
Added function (<code class="computeroutput"><span class="identifier">deallocate_free_chunks</span><span class="special">()</span></code>) to manually deallocate completely
free chunks from node allocators.
</li>
<li class="listitem">
Implemented N1780 proposal to LWG issue 233: <span class="emphasis"><em>Insertion hints
in associative containers</em></span> in interprocess <code class="computeroutput">multiset</code>
and <code class="computeroutput">multimap</code>
classes.
</li>
<li class="listitem">
<span class="bold"><strong>Source breaking</strong></span>: A shared memory object
is now used including <code class="computeroutput"><span class="identifier">shared_memory_object</span><span class="special">.</span><span class="identifier">hpp</span></code>
header instead of <code class="computeroutput"><span class="identifier">shared</span>
<span class="identifier">memory</span><span class="special">.</span><span class="identifier">hpp</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: Changed global mutex
when initializing managed shared memory and memory mapped files. This
change tries to minimize deadlocks.
</li>
<li class="listitem">
<span class="bold"><strong>Source breaking</strong></span>: Changed shared memory,
memory mapped files and mapped region's open mode to a single <code class="computeroutput"><span class="identifier">mode_t</span></code> type.
</li>
<li class="listitem">
Added extra WIN32_LEAN_AND_MEAN before including DateTime headers to
avoid socket redefinition errors when using Interprocess and Asio in
windows.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: <code class="computeroutput"><span class="identifier">mapped_region</span></code>
constructor no longer requires classes derived from memory_mappable,
but classes must fulfill the MemoryMappable concept.
</li>
<li class="listitem">
Added in-place reallocation capabilities to basic_string.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: Reimplemented and optimized
small string optimization. The narrow string class has zero byte overhead
with an internal 11 byte buffer in 32 systems!
</li>
<li class="listitem">
Added move semantics to containers. Improves performance when using
containers of containers.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: End nodes of node containers
(list, slist, map/set) are now embedded in the containers instead of
allocated using the allocator. This allows no-throw move-constructors
and improves performance.
</li>
<li class="listitem">
<span class="bold"><strong>ABI breaking</strong></span>: <span class="bold"><strong>slist</strong></span>
and <span class="bold"><strong>list</strong></span> containers now have constant-time
<span class="emphasis"><em>size()</em></span> function. The size of the container is
added as a member.
</li>
</ul></div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.books_and_links"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links" title="Books and interesting links">Books
and interesting links</a>
</h3></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_books">Books</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_links">Links</a></span></dt>
</dl></div>
<p>
Some useful references about the C++ programming language, C++ internals,
shared memory, allocators and containers used to design <span class="bold"><strong>Boost.Interprocess</strong></span>.
</p>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.books_and_links.references_books"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_books" title="Books">Books</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Great book about multithreading, and POSIX: <span class="bold"><strong><span class="emphasis"><em>"Programming
with Posix Threads"</em></span></strong></span>, <span class="bold"><strong>David
R. Butenhof</strong></span>
</li>
<li class="listitem">
The UNIX inter-process bible: <span class="bold"><strong><span class="emphasis"><em>"UNIX
Network Programming, Volume 2: Interprocess Communications"</em></span></strong></span>,
<span class="bold"><strong>W. Richard Stevens</strong></span>
</li>
<li class="listitem">
Current STL allocator issues: <span class="bold"><strong><span class="emphasis"><em>"Effective
STL"</em></span></strong></span>, <span class="bold"><strong>Scott Meyers</strong></span>
</li>
<li class="listitem">
My C++ bible: <span class="bold"><strong><span class="emphasis"><em>"Thinking in C++,
Volume 1 &amp; 2"</em></span></strong></span>, <span class="bold"><strong>Bruce
Eckel and Chuck Allison</strong></span>
</li>
<li class="listitem">
The book every C++ programmer should read: <span class="bold"><strong><span class="emphasis"><em>"Inside
the C++ Object Model"</em></span></strong></span>, <span class="bold"><strong>Stanley
B. Lippman</strong></span>
</li>
<li class="listitem">
A must-read: <span class="bold"><strong><span class="emphasis"><em>"ISO/IEC TR 18015:
Technical Report on C++ Performance"</em></span></strong></span>, <span class="bold"><strong>ISO WG21-SC22 members.</strong></span>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.books_and_links.references_links"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.books_and_links.references_links" title="Links">Links</a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
A framework to put the STL in shared memory: <a href="http://allocator.sourceforge.net/" target="_top"><span class="emphasis"><em>"A
C++ Standard Allocator for the Standard Template Library"</em></span>
</a>.
</li>
<li class="listitem">
Instantiating C++ objects in shared memory: <a href="http://www.cs.ubc.ca/local/reading/proceedings/cascon94/htm/english/abs/hon.htm" target="_top"><span class="emphasis"><em>"Using
objects in shared memory for C++ application"</em></span> </a>.
</li>
<li class="listitem">
A shared memory allocator and relative pointer: <a href="http://home.earthlink.net/~joshwalker1/writing/SharedMemory.html" target="_top"><span class="emphasis"><em>"Taming
Shared Memory"</em></span> </a>.
</li>
</ul></div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements" title="Future improvements...">Future
improvements...</a>
</h3></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.win32_sync">Win32
synchronization is too basic</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_objectnames">Use
of wide character names on Boost.Interprocess basic resources</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_security">Security
attributes</a></span></dt>
<dt><span class="section"><a href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_ipc">Future
inter-process communications</a></span></dt>
</dl></div>
<p>
There are some Interprocess features that I would like to implement and some
<span class="bold"><strong>Boost.Interprocess</strong></span> code that can be much
better. Let's see some ideas:
</p>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.win32_sync"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.win32_sync" title="Win32 synchronization is too basic">Win32
synchronization is too basic</a>
</h4></div></div></div>
<p>
Win32 version of shared mutexes and shared conditions are based on "spin
and wait" atomic instructions. This leads to poor performance and
does not manage any issues like priority inversions. We would need very
serious help from threading experts on this. And I'm not sure that this
can be achieved in user-level software. Posix based implementations use
PTHREAD_PROCESS_SHARED attribute to place mutexes in shared memory, so
there are no such problems. I'm not aware of any implementation that simulates
PTHREAD_PROCESS_SHARED attribute for Win32. We should be able to construct
these primitives in memory mapped files, so that we can get filesystem
persistence just like with POSIX primitives.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.future_objectnames"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_objectnames" title="Use of wide character names on Boost.Interprocess basic resources">Use
of wide character names on Boost.Interprocess basic resources</a>
</h4></div></div></div>
<p>
Currently Interprocess only allows <span class="bold"><strong>char</strong></span>
based names for basic named objects. However, several operating systems
use <span class="bold"><strong>wchar_t</strong></span> names for resources (mapped
files, for example). In the future Interprocess should try to present a
portable narrow/wide char interface. To do this, it would be useful to
have a boost wstring &lt;-&gt; string conversion utilities to translate
resource names (escaping needed characters that can conflict with OS names)
in a portable way. It would be interesting also the use of <span class="bold"><strong>boost::filesystem</strong></span>
paths to avoid operating system specific issues.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.future_security"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_security" title="Security attributes">Security
attributes</a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> does not define security
attributes for shared memory and synchronization objects. Standard C++
also ignores security attributes with files so adding security attributes
would require some serious work.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="interprocess.acknowledgements_notes.future_improvements.future_ipc"></a><a class="link" href="acknowledgements_notes.html#interprocess.acknowledgements_notes.future_improvements.future_ipc" title="Future inter-process communications">Future
inter-process communications</a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Boost.Interprocess</strong></span> offers a process-shared
message queue based on <span class="bold"><strong>Boost.Interprocess</strong></span>
primitives like mutexes and conditions. I would want to develop more mechanisms,
like stream-oriented named fifo so that we can use it with a iostream-interface
wrapper (we can imitate Unix pipes).
</p>
<p>
C++ needs more complex mechanisms and it would be nice to have a stream
and datagram oriented PF_UNIX-like mechanism in C++. And for very fast
inter-process remote calls Solaris doors is an interesting alternative
to implement for C++. But the work to implement PF_UNIX-like sockets and
doors would be huge (and it might be difficult in a user-level library).
Any network expert volunteer?
</p>
</div>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2005-2012 Ion Gaztanaga<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>
</div></td>
</tr></table>
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