boost-react-native-bundle
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<dt><span class="section"><a href="appendices.html#chrono.appendices.history">Appendix: History</a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.rationale">Appendix: Rationale</a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.implementation">Appendix: Implementation
Notes</a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.faq">Appendix: FAQ</a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.acknowledgements">Appendix: Acknowledgements</a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.todo">Appendix: Future plans</a></span></dt>
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<a name="chrono.appendices.history"></a><a class="link" href="appendices.html#chrono.appendices.history" title="Appendix: History">Appendix: History</a>
</h3></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_2_0_4__july_12__2014___1_56__"><span class="bold"><strong>Version 2.0.4, July 12, 2014 - 1.56</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_2_0_3__september_29__2013___1_55__"><span class="bold"><strong>Version 2.0.3, September 29, 2013 - 1.55</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_2_0_2__june_15__2013___1_54__"><span class="bold"><strong>Version 2.0.2, June 15, 2013 - 1.54</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_2_0_1__january_18__2013___1_53__"><span class="bold"><strong>Version 2.0.1, January 18, 2013 - 1.53</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_2_0_0__october_23__2012___1_52__"><span class="bold"><strong>Version 2.0.0, October 23, 2012 - 1.52</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_1_2_3__august_1__2012___1_51__"><span class="bold"><strong>Version 1.2.3, August 1, 2012 - 1.51</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_1_2_2__april_1__2012___1_50__"><span class="bold"><strong>Version 1.2.2, April 1, 2012 - 1.50</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_1_2_1__february_1__2012___1_49__"><span class="bold"><strong>Version 1.2.1, February 1, 2012 - 1.49</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_1_2_0__october_17__2011__"><span class="bold"><strong>Version 1.2.0, October 17, 2011</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_1_1_0__mars_17__2011__"><span class="bold"><strong>Version 1.1.0, Mars 17, 2011</strong></span> </a></span></dt>
<dt><span class="section"><a href="appendices.html#chrono.appendices.history.__version_1_0_0__january_6__2011__"><span class="bold"><strong>Version 1.0.0, January 6, 2011</strong></span> </a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_2_0_4__july_12__2014___1_56__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_2_0_4__july_12__2014___1_56__" title="Version 2.0.4, July 12, 2014 - 1.56"><span class="bold"><strong>Version 2.0.4, July 12, 2014 - 1.56</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6918" target="_top">#6918</a>
Boost Chrono compilation failure on HP uX due to undefined pthread_getcpuclockid
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8006" target="_top">#8006</a>
Boost::Chrono Assertion at startup - steady_clock::now() - Windows
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9337" target="_top">#9337</a>
chrono::process_cpu_clock time points wrong by factor 1000 on Linux
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9342" target="_top">#9342</a>
Regression on process_cpu_clock::timepoint io on V2
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9419" target="_top">#9419</a>
boost::chrono::floor()/round() and negative durations is wrong
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9698" target="_top">#9698</a>
boost::chrono::thread_clock not declared in OSX
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9720" target="_top">#9720</a>
boost::this_thread::sleep_for() sometimes returns immediately on win32
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9859" target="_top">#9859</a>
Remove references to gcc-mingw
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9918" target="_top">#9918</a>
chrono compilation error on Solaris, funciton timegm
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9811" target="_top">#9811</a>
boost/boost/chrono/duration.hpp:355:56: error: call to non-constexpr
function 'static std::numeric_limits<float>::_Ty std::numeric_limits<float>::max()'
/home/zosun/input_service/inputservices-core-service/other/boost/boost/chrono/duration.hpp:
In static member function 'static constexpr double boost::chrono::detail::chrono_numeric_limits<double,
true>::lowest()':
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/10069" target="_top">#10069</a>
Overflow in chrono clocks on 32bit
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/10151" target="_top">#10151</a>
timegm function not available on QNX
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_2_0_3__september_29__2013___1_55__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_2_0_3__september_29__2013___1_55__" title="Version 2.0.3, September 29, 2013 - 1.55"><span class="bold"><strong>Version 2.0.3, September 29, 2013 - 1.55</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7868" target="_top">#7868</a>
chrono_io parses time incorrectly (1.53 and 1.52)
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9028" target="_top">#9028</a>
Typo in boost/chrono/stopwatches/formatters/base_formatter.hpp
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9147" target="_top">#9147</a>
uninitialized std::tm
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9274" target="_top">#9274</a>
lost of precission on system_clock input.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/9276" target="_top">#9276</a>
output from a system_clock::time_point get a time_point that is one
day later than expected.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_2_0_2__june_15__2013___1_54__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_2_0_2__june_15__2013___1_54__" title="Version 2.0.2, June 15, 2013 - 1.54"><span class="bold"><strong>Version 2.0.2, June 15, 2013 - 1.54</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8079" target="_top">#8079</a>
Chrono memory leak
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8318" target="_top">#8318</a>
BOOST_FORCEINLINE constructors of time_point and duration
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8367" target="_top">#8367</a>
chrono does not compile with clang from XCode 4.5.2 with -std=c++11
-stdlib=libc++ and -arch armv7
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8370" target="_top">#8370</a>
typo in chrono reference
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8435" target="_top">#8435</a>
Can't compile Chrono on HP-UX due to no CLOCK_REALTIME macro.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8690" target="_top">#8690</a>
duration_units_default - lost return types constness in overridden
methods.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8691" target="_top">#8691</a>
iostate is not checked after scan_keyword call.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/8696" target="_top">#8696</a>
chrono compilation error on Solaris/gcc.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_2_0_1__january_18__2013___1_53__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_2_0_1__january_18__2013___1_53__" title="Version 2.0.1, January 18, 2013 - 1.53"><span class="bold"><strong>Version 2.0.1, January 18, 2013 - 1.53</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Deprecated:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
The chrono i/o version included in Boost.Chrono 1.2.x has been completly
refactored in version 2.0.0
</li>
<li class="listitem">
chrono I/O: The manipulators <a class="link" href="reference.html#chrono.reference.io_v1.chrono_io_hpp.manipulators" title="I/O Manipulators"><code class="computeroutput"><span class="identifier">duration_short</span></code></a>, <a class="link" href="reference.html#chrono.reference.io_v1.chrono_io_hpp.manipulators" title="I/O Manipulators"><code class="computeroutput"><span class="identifier">duration_long</span></code></a> are depreceated.
You should use the parameterized form <a class="link" href="reference.html#chrono.reference.io.duration_io_hpp.manipulators.duration_fmt" title="Template Class duration_fmt"><code class="computeroutput"><span class="identifier">duration_fmt</span></code></a> or the renamed
manipulators __duration_symbol and __duration_prefix instead.
</li>
<li class="listitem">
chrono I/O: The <a class="link" href="reference.html#chrono.reference.io_v1.chrono_io_hpp.duration_punct" title="Template Class duration_punct<>"><code class="computeroutput"><span class="identifier">duration_punct</span></code></a><> facet
is depreceated. You should use the <a class="link" href="reference.html#chrono.reference.io.ios_state_hpp.sag.get_duration_style" title="Non Member Function get_duration_style(std::ios_base &)"><code class="computeroutput"><span class="identifier">get_duration_style</span></code></a> free function
to get the informations and use the <a class="link" href="reference.html#chrono.reference.io.duration_units_hpp.duration_units" title="Template Class duration_units"><code class="computeroutput"><span class="identifier">duration_units</span></code></a> facet for localization
purposes.
</li>
</ul></div>
<p>
When BOOST_CHRONO_VERSION==2 the preceding deprecated functions are not
available.
</p>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7546" target="_top">#7546</a>
time_point<system_clock> output version 2 fails to compile assigned
viboes Bugs Boost 1.53.0 --
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7547" target="_top">#7547</a>
time_point<system_clock> input version 2 fails to compile assigned
viboes Bugs Boost 1.53.0 --
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7868" target="_top">#7868</a>
chrono_io parses time incorrectly (1.53 and 1.52)
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_2_0_0__october_23__2012___1_52__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_2_0_0__october_23__2012___1_52__" title="Version 2.0.0, October 23, 2012 - 1.52"><span class="bold"><strong>Version 2.0.0, October 23, 2012 - 1.52</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>New Features:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
Enhance chrono I/O
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5980" target="_top">#5980</a>
Enhance chrono I/O with H. Hinnant proposal <a href="http://home.roadrunner.com/~hinnant/bloomington/chrono_io.html" target="_top">proposal</a>
which has the advantage to provide I/O for system clocks using
the Gregorian Calendar.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5981" target="_top">#5981</a>
Add i/o state savers for duration and time_point formatting state.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7059" target="_top">#7059</a>
Add low level i/o facilities.
</li>
</ul></div>
</li></ul></div>
<p>
<span class="bold"><strong>Deprecated:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
The chrono i/o version included in Boost.Chrono 1.2.x has been completly
refactored in version 2.0.0
</li>
<li class="listitem">
chrono I/O: The manipulators <a class="link" href="reference.html#chrono.reference.io_v1.chrono_io_hpp.manipulators" title="I/O Manipulators"><code class="computeroutput"><span class="identifier">duration_short</span></code></a>, <a class="link" href="reference.html#chrono.reference.io_v1.chrono_io_hpp.manipulators" title="I/O Manipulators"><code class="computeroutput"><span class="identifier">duration_long</span></code></a> are depreceated.
You should use the parameterized form <a class="link" href="reference.html#chrono.reference.io.duration_io_hpp.manipulators.duration_fmt" title="Template Class duration_fmt"><code class="computeroutput"><span class="identifier">duration_fmt</span></code></a> or the renamed
manipulators __duration_symbol and __duration_prefix instead.
</li>
<li class="listitem">
chrono I/O: The <a class="link" href="reference.html#chrono.reference.io_v1.chrono_io_hpp.duration_punct" title="Template Class duration_punct<>"><code class="computeroutput"><span class="identifier">duration_punct</span></code></a><> facet
is depreceated. You should use the <a class="link" href="reference.html#chrono.reference.io.ios_state_hpp.sag.get_duration_style" title="Non Member Function get_duration_style(std::ios_base &)"><code class="computeroutput"><span class="identifier">get_duration_style</span></code></a> free function
to get the informations and use the <a class="link" href="reference.html#chrono.reference.io.duration_units_hpp.duration_units" title="Template Class duration_units"><code class="computeroutput"><span class="identifier">duration_units</span></code></a> facet for localization
purposes.
</li>
</ul></div>
<p>
When BOOST_CHRONO_VERSION==2 the preceding deprecated functions are not
available.
</p>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7381" target="_top">#7381</a>
C++11 compliance: unresolved symbol when assigning a constexpr duration
to a non-const local variable.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7479" target="_top">#7479</a>
Compiles fails with compilers supporting constexpr fails if the standard
library doesn't provides the constexpr interface
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7493" target="_top">#7493</a>
compile fail on intel-linux-12.1.3.0x because of bug on explicit bool
conversion
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7542" target="_top">#7542</a>
Missing -lpthread in chrono/io tester Sandia-clang-trunk
</li>
</ul></div>
<p>
<span class="bold"><strong>Would not fix:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6871" target="_top">#6871</a>
chrono_io.hpp: operator<<(ostream& os, ...) modifies the
state of os.
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; "><li class="listitem">
The neww io interface provided in version 2 solves this issue.
You should move to the new version.
</li></ul></div>
</li></ul></div>
<p>
<span class="bold"><strong>Known bugs not fixed yet:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7525" target="_top">#7525</a>
Wrong clock_string<system_clock>::since() on Windows
</li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_1_2_3__august_1__2012___1_51__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_1_2_3__august_1__2012___1_51__" title="Version 1.2.3, August 1, 2012 - 1.51"><span class="bold"><strong>Version 1.2.3, August 1, 2012 - 1.51</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6918" target="_top">#6918</a>
Boost Chrono compilation failure on HP uX due to undefined pthread_getcpuclockid.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6241" target="_top">#6241</a>
boost::chrono compilation problems without std::wstring support.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6987" target="_top">#6987</a>
Documentation & C++11.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7041" target="_top">#7041</a>
time_point.hpp depends on Boost.System.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7042" target="_top">#7042</a>
Avoiding time_point and duration dependency on time.h and CLOCK_REALTIME.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7058" target="_top">#7058</a>
Make it work when BOOST_NO_EXCEPTIONS is defined.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7069" target="_top">#7069</a>
Misspellings in clock_string<thread_clock>.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/7081" target="_top">#7081</a>
WinError.h capitalization in boost/detail/win/basic_types.hpp.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_1_2_2__april_1__2012___1_50__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_1_2_2__april_1__2012___1_50__" title="Version 1.2.2, April 1, 2012 - 1.50"><span class="bold"><strong>Version 1.2.2, April 1, 2012 - 1.50</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6361" target="_top">#6361</a>
integer overflow in boost::chrono::process_real_cpu_clock::now() under
Windows 32bits.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6628" target="_top">#6628</a>
compiler warning in process_cpu_clocks.hpp.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6666" target="_top">#6666</a>
thread_clock.hpp needs pthread.h.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_1_2_1__february_1__2012___1_49__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_1_2_1__february_1__2012___1_49__" title="Version 1.2.1, February 1, 2012 - 1.49"><span class="bold"><strong>Version 1.2.1, February 1, 2012 - 1.49</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6092" target="_top">#6092</a>
Input from non integral durations makes the compiler fail.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6093" target="_top">#6093</a>
[1/3]second fails as valid duration input.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6113" target="_top">#6113</a>
duplicate symbol when BOOST_CHRONO_HEADER_ONLY is defined.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6243" target="_top">#6243</a>
Sandia-pgi-11.9: more than one instance of overloaded function "min"
matches.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/6257" target="_top">#6257</a>
process_cpu_clock::now() on linux gives time_points 1/1000 times.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_1_2_0__october_17__2011__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_1_2_0__october_17__2011__" title="Version 1.2.0, October 17, 2011"><span class="bold"><strong>Version 1.2.0, October 17, 2011</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>New Features:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5979" target="_top">#5979</a>
Added chrono rounding utilities as defined By Howard Hinnant <a href="http://home.roadrunner.com/~hinnant/duration_io/chrono_util.html" target="_top">here</a>.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5978" target="_top">#5978</a>
Added BOOST_CHRONO_HAS_PROCESS_CLOCKS to know if process clocks are
available.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5998" target="_top">#5998</a>
Make possible to don't provide hybrid error handling.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5906" target="_top">#5906</a>
Take in account the constexpr as defined in the standard.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5907" target="_top">#5907</a>
Take in account noexcept for compilers supporting it.
</li>
</ul></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/2114" target="_top">#2114</a>
Enable visibility support (Boost.Chorno part)
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5669" target="_top">#5669</a>
Intel compiler failure to compile duration.hpp
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5909" target="_top">#5909</a>
process_cpu_clock::now() on MAC gives time_points 1/1000 times.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5946" target="_top">#5946</a>
Process real cpu clock returns the system steady clock (windows).
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5974" target="_top">#5974</a>
Process real cpu clock should use clock() instead of times() in MAC
which is twice faster and have better resolution.
</li>
</ul></div>
<p>
<span class="bold"><strong>Cleanup:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5975" target="_top">#5975</a>
Reduce the combinations of header-only, shared, static link to reduce
test time by 50%.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5976" target="_top">#5976</a>
chrono_accuracy_test is not deterministic and should be removed from
the regression tests
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5977" target="_top">#5977</a>
Remove old files from Beman's version. Some old files included in the
Beman's version and not documented in the reviewed version that have
been definitely removed from the repository as
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
boost/chrono/timer.hpp,
</li>
<li class="listitem">
boost/chrono/process_times.hpp
</li>
<li class="listitem">
boost/chrono/detail/process_clock.hpp,
</li>
<li class="listitem">
boost/chrono/detail/mac/process_clock.hpp,
</li>
<li class="listitem">
boost/chrono/detail/posix/process_clock.hpp,
</li>
<li class="listitem">
boost/chrono/detail/win/process_clock.hpp,
</li>
<li class="listitem">
boost/chrono/detail/run_timer.hpp,
</li>
<li class="listitem">
boost/chrono/detail/run_timer_static.hpp,
</li>
</ul></div>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_1_1_0__mars_17__2011__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_1_1_0__mars_17__2011__" title="Version 1.1.0, Mars 17, 2011"><span class="bold"><strong>Version 1.1.0, Mars 17, 2011</strong></span> </a>
</h4></div></div></div>
<p>
<span class="bold"><strong>New Features:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/????" target="_top">#????</a>
Added time_point unary operators +,-,++,-- and binary operators +<code class="literal">,-</code>
with Rep al RHS.
</li>
<li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5323" target="_top">#5323</a>
Add Associated type difference_type for chrono::time_point.
</li>
</ul></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
<a href="http://svn.boost.org/trac/boost/ticket/5322" target="_top">#5322</a>
Explicit default constructed chrono::durations are uninitialized
</li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="chrono.appendices.history.__version_1_0_0__january_6__2011__"></a><a class="link" href="appendices.html#chrono.appendices.history.__version_1_0_0__january_6__2011__" title="Version 1.0.0, January 6, 2011"><span class="bold"><strong>Version 1.0.0, January 6, 2011</strong></span> </a>
</h4></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Moved chrono to trunk taking in account the review remarks.
</li>
<li class="listitem">
Documentation revision.
</li>
</ul></div>
<p>
<span class="bold"><strong>Features:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Boost_Chrono is now a configurable header-only library version (that
also allows the user to choose if the <code class="computeroutput"><span class="identifier">windows</span><span class="special">.</span><span class="identifier">h</span></code>
file is included or not).
</li>
<li class="listitem">
Added clock_string<> traits.
</li>
<li class="listitem">
Define chrono-io for all the clocks.
</li>
<li class="listitem">
Add input of process_times representation.
</li>
</ul></div>
<p>
<span class="bold"><strong>Implementation:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Use of detail/win files to avoid the use of windows.h file.
</li>
<li class="listitem">
Completed the error_code handling.
</li>
<li class="listitem">
Works now with BOOST_SYSTEM_NO_DEPRECATED.
</li>
</ul></div>
<p>
<span class="bold"><strong>Fixes:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fix some warnings.
</li>
<li class="listitem">
Fix original errors on Mac
</li>
<li class="listitem">
Don't fix the link with boost_system to static.
</li>
</ul></div>
<p>
<span class="bold"><strong>Test:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Added test on process and thread clocks.
</li>
<li class="listitem">
Moved to lightweight_test.hpp.
</li>
<li class="listitem">
Able to test multiple configurations.
</li>
</ul></div>
<p>
<span class="bold"><strong>Doc:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
Removed some not useful parts as the test and the tickets.
</li></ul></div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="chrono.appendices.rationale"></a><a class="link" href="appendices.html#chrono.appendices.rationale" title="Appendix: Rationale">Appendix: Rationale</a>
</h3></div></div></div>
<p>
See <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2661.htm" target="_top"><span class="bold"><strong>N2661 - A Foundation to Sleep On</strong></span></a> which is
very informative and provides motivation for key design decisions. This section
contains some extracts from this document.
</p>
<h5>
<a name="chrono.appendices.rationale.h0"></a>
<span class="phrase"><a name="chrono.appendices.rationale.why_duration_needs_operator_"></a></span><a class="link" href="appendices.html#chrono.appendices.rationale.why_duration_needs_operator_">Why duration
needs operator%</a>
</h5>
<p>
This operator is convenient for computing where in a time frame a given duration
lies. A motivating example is converting a duration into a "broken-down"
time duration such as hours::minutes::seconds:
</p>
<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">ClockTime</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">hours</span> <span class="identifier">hours</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">minutes</span> <span class="identifier">minutes</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">seconds</span> <span class="identifier">seconds</span><span class="special">;</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="identifier">hours</span> <span class="identifier">hours_</span><span class="special">;</span>
<span class="identifier">minutes</span> <span class="identifier">minutes_</span><span class="special">;</span>
<span class="identifier">seconds</span> <span class="identifier">seconds_</span><span class="special">;</span>
<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Rep</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Period</span><span class="special">></span>
<span class="keyword">explicit</span> <span class="identifier">ClockTime</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">duration</span><span class="special"><</span><span class="identifier">Rep</span><span class="special">,</span> <span class="identifier">Period</span><span class="special">>&</span> <span class="identifier">d</span><span class="special">)</span>
<span class="special">:</span> <span class="identifier">hours_</span> <span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">duration_cast</span><span class="special"><</span><span class="identifier">hours</span><span class="special">></span> <span class="special">(</span><span class="identifier">d</span><span class="special">)),</span>
<span class="identifier">minutes_</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">duration_cast</span><span class="special"><</span><span class="identifier">minutes</span><span class="special">>(</span><span class="identifier">d</span> <span class="special">%</span> <span class="identifier">hours</span><span class="special">(</span><span class="number">1</span><span class="special">))),</span>
<span class="identifier">seconds_</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">duration_cast</span><span class="special"><</span><span class="identifier">seconds</span><span class="special">>(</span><span class="identifier">d</span> <span class="special">%</span> <span class="identifier">minutes</span><span class="special">(</span><span class="number">1</span><span class="special">)))</span>
<span class="special">{}</span>
<span class="special">};</span>
</pre>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="chrono.appendices.implementation"></a><a class="link" href="appendices.html#chrono.appendices.implementation" title="Appendix: Implementation Notes">Appendix: Implementation
Notes</a>
</h3></div></div></div>
<h5>
<a name="chrono.appendices.implementation.h0"></a>
<span class="phrase"><a name="chrono.appendices.implementation.which_apis_have_been_chosen_to_implement_each_clock_on_each_platform_"></a></span><a class="link" href="appendices.html#chrono.appendices.implementation.which_apis_have_been_chosen_to_implement_each_clock_on_each_platform_">Which
APIs have been chosen to implement each clock on each platform?</a>
</h5>
<p>
The following table presents a resume of which API is uused for each clock
on each platform
</p>
<div class="table">
<a name="chrono.appendices.implementation.clock_api_correspondence"></a><p class="title"><b>Table 6.4. Clock API correspondence</b></p>
<div class="table-contents"><table class="table" summary="Clock API correspondence">
<colgroup>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Clock
</p>
</th>
<th>
<p>
Windows Platform
</p>
</th>
<th>
<p>
Posix Platform
</p>
</th>
<th>
<p>
Mac Platform
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<a class="link" href="reference.html#chrono.reference.cpp0x.system_clocks_hpp.system_clock" title="Class system_clock"><code class="computeroutput"><span class="identifier">system_clock</span></code></a>
</p>
</td>
<td>
<p>
GetSystemTimeAsFileTime
</p>
</td>
<td>
<p>
clock_gettime( CLOCK_REALTIME)
</p>
</td>
<td>
<p>
gettimeofday
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="reference.html#chrono.reference.cpp0x.system_clocks_hpp.steady_clock" title="Class steady_clock"><code class="computeroutput"><span class="identifier">steady_clock</span></code></a>
</p>
</td>
<td>
<p>
QueryPerformanceCounter and QueryPerformanceFrequency
</p>
</td>
<td>
<p>
clock_gettime( CLOCK_STEADY)
</p>
</td>
<td>
<p>
mach_timebase_info,mach_absolute_time
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="reference.html#chrono.reference.other_clocks.process_cpu_clocks_hpp.process_real_cpu_clock" title="Class process_real_cpu_clock"><code class="computeroutput"><span class="identifier">process_real_cpu_clock</span></code></a>
</p>
</td>
<td>
<p>
GetProcessTimes
</p>
</td>
<td>
<p>
times
</p>
</td>
<td>
<p>
times
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="reference.html#chrono.reference.other_clocks.process_cpu_clocks_hpp.process_system_cpu_clock" title="Class process_system_cpu_clock"><code class="computeroutput"><span class="identifier">process_system_cpu_clock</span></code></a>
</p>
</td>
<td>
<p>
GetProcessTimes
</p>
</td>
<td>
<p>
times
</p>
</td>
<td>
<p>
times
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="reference.html#chrono.reference.other_clocks.process_cpu_clocks_hpp.process_user_cpu_clock" title="Class process_user_cpu_clock"><code class="computeroutput"><span class="identifier">process_user_cpu_clock</span></code></a>
</p>
</td>
<td>
<p>
GetProcessTimes
</p>
</td>
<td>
<p>
times
</p>
</td>
<td>
<p>
times
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="reference.html#chrono.reference.other_clocks.process_cpu_clocks_hpp.process_cpu_clock" title="Class process_cpu_clock"><code class="computeroutput"><span class="identifier">process_cpu_clock</span></code></a>
</p>
</td>
<td>
<p>
GetProcessTimes
</p>
</td>
<td>
<p>
times
</p>
</td>
<td>
<p>
times
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="reference.html#chrono.reference.other_clocks.thread_clock_hpp.thread_clock" title="Class thread_clock"><code class="computeroutput"><span class="identifier">thread_clock</span></code></a>
</p>
</td>
<td>
<p>
GetThreadTimes
</p>
</td>
<td>
<p>
clock_gettime(pthread_getcpuclockid)
</p>
</td>
<td>
<p>
clock_gettime(pthread_getcpuclockid)
</p>
</td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break">
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="chrono.appendices.faq"></a><a class="link" href="appendices.html#chrono.appendices.faq" title="Appendix: FAQ">Appendix: FAQ</a>
</h3></div></div></div>
<h5>
<a name="chrono.appendices.faq.h0"></a>
<span class="phrase"><a name="chrono.appendices.faq.why_does_process_cpu_clock_sometimes_give_more_cpu_seconds_than_real_seconds_"></a></span><a class="link" href="appendices.html#chrono.appendices.faq.why_does_process_cpu_clock_sometimes_give_more_cpu_seconds_than_real_seconds_">Why
does process_cpu_clock sometimes give more cpu seconds than real seconds?</a>
</h5>
<p>
Ask your operating system supplier. The results have been inspected with
a debugger, and both for Windows and Linux, that's what the OS appears to
be reporting at times.
</p>
<h5>
<a name="chrono.appendices.faq.h1"></a>
<span class="phrase"><a name="chrono.appendices.faq.are_integer_overflows_in_the_duration_arithmetic_detected_and_reported_"></a></span><a class="link" href="appendices.html#chrono.appendices.faq.are_integer_overflows_in_the_duration_arithmetic_detected_and_reported_">Are
integer overflows in the duration arithmetic detected and reported?</a>
</h5>
<p>
<span class="bold"><strong>Boost.Ratio</strong></span> avoids all kind of overflow
that could result of arithmetic operation and that can be simplified. The
typedefs durations don't detect overflow. You will need a duration representation
that handles overflow.
</p>
<h5>
<a name="chrono.appendices.faq.h2"></a>
<span class="phrase"><a name="chrono.appendices.faq.which_clocks_should_be_used_to_benchmarking_"></a></span><a class="link" href="appendices.html#chrono.appendices.faq.which_clocks_should_be_used_to_benchmarking_">Which
clocks should be used to benchmarking?</a>
</h5>
<p>
Each clock has his own features. It depends on what do you need to benchmark.
Most of the time, you could be interested in using a thread clock, but if
you need to measure code subject to synchronization a process clock would
be better. If you have a multi-process application, a system-wide clock could
be needed.
</p>
<h5>
<a name="chrono.appendices.faq.h3"></a>
<span class="phrase"><a name="chrono.appendices.faq.which_clocks_should_be_used_for_watching_"></a></span><a class="link" href="appendices.html#chrono.appendices.faq.which_clocks_should_be_used_for_watching_">Which
clocks should be used for watching?</a>
</h5>
<p>
For trace purposes, it is probably best to use a system-wide clock.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="chrono.appendices.acknowledgements"></a><a class="link" href="appendices.html#chrono.appendices.acknowledgements" title="Appendix: Acknowledgements">Appendix: Acknowledgements</a>
</h3></div></div></div>
<p>
The library's code was derived from Howard Hinnant's time2_demo prototype.
Many thanks to Howard for making his code available under the Boost license.
The original code was modified by Beman Dawes to conform to Boost conventions.
</p>
<p>
time2_demo contained this comment:
</p>
<p>
Much thanks to Andrei Alexandrescu, Walter Brown, Peter Dimov, Jeff Garland,
Terry Golubiewski, Daniel Krugler, Anthony Williams.
</p>
<p>
The file <boost/chrono_io.hpp> has been adapted from the experimental
header <code class="computeroutput"><span class="special"><</span><span class="identifier">chrono_io</span><span class="special">></span></code> from Howard Hinnant. Thanks for all Howard.
</p>
<p>
Howard Hinnant, who is the real author of the library, has provided valuable
feedback and suggestions during the development of the library. In particular,
The chrono_io_io.hpp source has been adapted from the experimental header
<code class="computeroutput"><span class="special"><</span><span class="identifier">chrono_io</span><span class="special">></span></code> from Howard Hinnant.
</p>
<p>
The acceptance review of Boost.Ratio took place between November 5th and
15th 2010. Many thanks to Anthony Williams, the review manager, and to all
the reviewers: David Deakins, John Bytheway, Roland Bock and Paul A. Bristow.
</p>
<p>
Thanks to Ronald Bock, Andrew Chinoff, Paul A. Bristow and John Bytheway
for his help polishing the documentation.
</p>
<p>
Thanks to Tom Tan for reporting some compiler issues with MSVC V10 beta and
MinGW-gcc-4.4.0 and for the many pushing for an homogeneous <code class="computeroutput"><span class="identifier">process_cpu_clock</span></code> clock.
</p>
<p>
Thanks to Ronald Bock for reporting Valgind issues and for the many suggestions
he made concerning the documentation.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="chrono.appendices.todo"></a><a class="link" href="appendices.html#chrono.appendices.todo" title="Appendix: Future plans">Appendix: Future plans</a>
</h3></div></div></div>
<h5>
<a name="chrono.appendices.todo.h0"></a>
<span class="phrase"><a name="chrono.appendices.todo.for_later_releases"></a></span><a class="link" href="appendices.html#chrono.appendices.todo.for_later_releases">For
later releases</a>
</h5>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Include Stopwatches.
</li>
<li class="listitem">
Add User defined literals for some durations.
</li>
<li class="listitem">
Include chrono::date as defined by Howard Hinnant <a href="http://home.roadrunner.com/~hinnant/bloomington/date.html" target="_top">here</a>.
</li>
</ul></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 © 2008 Howard Hinnant<br>Copyright © 2006, 2008 Beman Dawes<br>Copyright © 2009-2013 Vicente J. Botet Escriba<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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