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Diffstat (limited to 'libs/log/doc/html/boost/log/attributes/timer.html')
| -rw-r--r-- | libs/log/doc/html/boost/log/attributes/timer.html | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/libs/log/doc/html/boost/log/attributes/timer.html b/libs/log/doc/html/boost/log/attributes/timer.html index 2b22a405f..01b64ef29 100644 --- a/libs/log/doc/html/boost/log/attributes/timer.html +++ b/libs/log/doc/html/boost/log/attributes/timer.html @@ -6,14 +6,14 @@ <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <link rel="home" href="../../../index.html" title="Chapter 1. Boost.Log v2"> <link rel="up" href="../../../attributes.html#header.boost.log.attributes.timer_hpp" title="Header <boost/log/attributes/timer.hpp>"> -<link rel="prev" href="local_time_traits.html" title="Struct local_time_traits"> -<link rel="next" href="../result_of/extract_or_default.html" title="Struct template extract_or_default"> +<link rel="prev" href="utc_time_traits.html" title="Struct utc_time_traits"> +<link rel="next" href="../result_of/extract.html" title="Struct template extract"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr><td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td></tr></table> <hr> <div class="spirit-nav"> -<a accesskey="p" href="local_time_traits.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../attributes.html#header.boost.log.attributes.timer_hpp"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../result_of/extract_or_default.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> +<a accesskey="p" href="utc_time_traits.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../attributes.html#header.boost.log.attributes.timer_hpp"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../result_of/extract.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> </div> <div class="refentry"> <a name="boost.log.attributes.timer"></a><div class="titlepage"></div> @@ -31,28 +31,28 @@ <span class="keyword">typedef</span> <span class="identifier">utc_time_traits</span><span class="special">::</span><span class="identifier">time_type</span><span class="special">::</span><span class="identifier">time_duration_type</span> <a name="boost.log.attributes.timer.value_type"></a><span class="identifier">value_type</span><span class="special">;</span> <span class="comment">// Attribute value type. </span> <span class="comment">// <a class="link" href="timer.html#boost.log.attributes.timerconstruct-copy-destruct">construct/copy/destruct</a></span> - <a class="link" href="timer.html#idp35658560-bb"><span class="identifier">timer</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> - <span class="keyword">explicit</span> <a class="link" href="timer.html#idp35659280-bb"><span class="identifier">timer</span></a><span class="special">(</span><a class="link" href="cast_source.html" title="Class cast_source">cast_source</a> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> + <a class="link" href="timer.html#idp42326224-bb"><span class="identifier">timer</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">explicit</span> <a class="link" href="timer.html#idp42326944-bb"><span class="identifier">timer</span></a><span class="special">(</span><a class="link" href="cast_source.html" title="Class cast_source">cast_source</a> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="special">}</span><span class="special">;</span></pre></div> <div class="refsect1"> -<a name="idp91905024"></a><h2>Description</h2> +<a name="idp109123200"></a><h2>Description</h2> <p>The timer attribute calculates the time passed since its construction and returns it on value acquisition. The attribute value type is <code class="computeroutput">boost::posix_time::time_duration</code>.</p> <p>On Windows platform there are two implementations of the attribute. The default one is more precise but a bit slower. This version uses <code class="computeroutput">QueryPerformanceFrequence</code>/<code class="computeroutput">QueryPerformanceCounter</code> API to calculate elapsed time.</p> <p>There are known problems with these functions when used with some CPUs, notably AMD Athlon with Cool'n'Quiet technology enabled. See the following links for more information and possible resolutions:</p> <p><a href="http://support.microsoft.com/?scid=kb;en-us;895980" target="_top">http://support.microsoft.com/?scid=kb;en-us;895980</a> <a href="http://support.microsoft.com/?id=896256" target="_top">http://support.microsoft.com/?id=896256</a></p> <p>In case if none of these solutions apply, you are free to define <code class="computeroutput">BOOST_LOG_NO_QUERY_PERFORMANCE_COUNTER</code> macro to fall back to another implementation based on Boost.DateTime. </p> <div class="refsect2"> -<a name="idp91911360"></a><h3> +<a name="idp109129520"></a><h3> <a name="boost.log.attributes.timerconstruct-copy-destruct"></a><code class="computeroutput">timer</code> public construct/copy/destruct</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> -<pre class="literallayout"><a name="idp35658560-bb"></a><span class="identifier">timer</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> +<pre class="literallayout"><a name="idp42326224-bb"></a><span class="identifier">timer</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> <p>Constructor. Starts time counting. </p> </li> <li class="listitem"> -<pre class="literallayout"><span class="keyword">explicit</span> <a name="idp35659280-bb"></a><span class="identifier">timer</span><span class="special">(</span><a class="link" href="cast_source.html" title="Class cast_source">cast_source</a> <span class="keyword">const</span> <span class="special">&</span> source<span class="special">)</span><span class="special">;</span></pre> +<pre class="literallayout"><span class="keyword">explicit</span> <a name="idp42326944-bb"></a><span class="identifier">timer</span><span class="special">(</span><a class="link" href="cast_source.html" title="Class cast_source">cast_source</a> <span class="keyword">const</span> <span class="special">&</span> source<span class="special">)</span><span class="special">;</span></pre> <p>Constructor for casting support </p> </li> </ol></div> @@ -61,7 +61,8 @@ </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 © 2007-2014 Andrey Semashev<p> +<td align="right"><div class="copyright-footer">Copyright © 2007-2015 Andrey + Semashev<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> @@ -69,7 +70,7 @@ </tr></table> <hr> <div class="spirit-nav"> -<a accesskey="p" href="local_time_traits.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../attributes.html#header.boost.log.attributes.timer_hpp"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../result_of/extract_or_default.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> +<a accesskey="p" href="utc_time_traits.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../attributes.html#header.boost.log.attributes.timer_hpp"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../result_of/extract.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html> |