forked from premiere/premiere-libtorrent
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HTML
198 lines
8.8 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="author" content="Arvid Norberg, arvid@rasterbar.com" />
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<div class="document" id="time">
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<ul>
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<li class="first"><a href="/">Home</a></li>
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<div id="main">
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<h1 class="title">Time</h1>
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<table class="docinfo" frame="void" rules="none">
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<col class="docinfo-name" />
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<col class="docinfo-content" />
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<tbody valign="top">
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<tr><th class="docinfo-name">Author:</th>
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<td>Arvid Norberg, <a class="last reference external" href="mailto:arvid@rasterbar.com">arvid@rasterbar.com</a></td></tr>
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<tr><th class="docinfo-name">Version:</th>
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<td>1.0.0</td></tr>
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</tbody>
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</table>
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<div class="contents topic" id="table-of-contents">
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<p class="topic-title first">Table of contents</p>
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<ul class="simple">
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<li><a class="reference internal" href="#time-duration" id="id17">time_duration</a></li>
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<li><a class="reference internal" href="#ptime" id="id18">ptime</a></li>
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</ul>
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</div>
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<p>This section contains fundamental time types used internall by
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libtorrent and exposed through various places in the API. The two
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basic types are <tt class="docutils literal">ptime</tt> and <tt class="docutils literal">time_duration</tt>. The first represents
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a point in time and the second the difference between two points
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in time.</p>
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<p>The internal representation of these types is implementation defined
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and they can only be constructed via one of the construction functions
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that take a well defined time unit (seconds, minutes, etc.). They can
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only be turned into well defined time units by the accessor functions
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(total_microseconds(), etc.).</p>
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<div class="note">
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<p class="first admonition-title">Note</p>
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<p class="last">In a future version of libtorrent, these types will be replaced
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by the standard timer types from <tt class="docutils literal"><span class="pre">std::chrono</span></tt>.</p>
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</div>
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<a name="time_duration"></a><div class="section" id="time-duration">
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<h1>time_duration</h1>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/ptime.hpp">libtorrent/ptime.hpp</a>"</p>
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<p>libtorrent <a class="reference external" href="reference-Time.html#time_duration">time_duration</a> type</p>
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<pre class="literal-block">
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struct time_duration
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{
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time_duration& <strong>operator-=</strong> (time_duration const& c);
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time_duration <strong>operator+</strong> (time_duration const& c);
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time_duration& <strong>operator+=</strong> (time_duration const& c);
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time_duration <strong>operator/</strong> (int rhs) const;
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explicit <strong>time_duration</strong> (boost::int64_t d);
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time_duration <strong>operator-</strong> (time_duration const& c);
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time_duration& <strong>operator*=</strong> (int v);
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};
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</pre>
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<a name="ptime"></a></div>
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<div class="section" id="ptime">
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<h1>ptime</h1>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/ptime.hpp">libtorrent/ptime.hpp</a>"</p>
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<p>This type represents a point in time.</p>
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<pre class="literal-block">
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struct ptime
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{
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ptime& <strong>operator-=</strong> (time_duration rhs);
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ptime& <strong>operator+=</strong> (time_duration rhs);
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};
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</pre>
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<a name="is_negative()"></a><div class="section" id="is-negative">
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<h2>is_negative()</h2>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/ptime.hpp">libtorrent/ptime.hpp</a>"</p>
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<pre class="literal-block">
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inline bool <strong>is_negative</strong> (time_duration dt);
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</pre>
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<a name="operator+()"></a>
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<a name="operator-()"></a></div>
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<div class="section" id="operator-operator">
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<h2>operator+() operator-()</h2>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/ptime.hpp">libtorrent/ptime.hpp</a>"</p>
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<pre class="literal-block">
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inline ptime <strong>operator+</strong> (time_duration lhs, ptime rhs);
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inline ptime <strong>operator+</strong> (ptime lhs, time_duration rhs);
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inline time_duration <strong>operator-</strong> (ptime lhs, ptime rhs);
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inline ptime <strong>operator-</strong> (ptime lhs, time_duration rhs);
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</pre>
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<a name="time_now()"></a></div>
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<div class="section" id="time-now">
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<h2>time_now()</h2>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/time.hpp">libtorrent/time.hpp</a>"</p>
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<pre class="literal-block">
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ptime const& <strong>time_now</strong> ();
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</pre>
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<p>returns the current time, as represented by <a class="reference external" href="reference-Time.html#ptime">ptime</a>. The
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resolution of this timer is about 100 ms.</p>
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<a name="time_now_hires()"></a></div>
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<div class="section" id="time-now-hires">
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<h2>time_now_hires()</h2>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/time.hpp">libtorrent/time.hpp</a>"</p>
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<pre class="literal-block">
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ptime <strong>time_now_hires</strong> ();
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</pre>
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<p>returns the current time as represented by <a class="reference external" href="reference-Time.html#ptime">ptime</a>. This is
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more expensive than <a class="reference external" href="reference-Time.html#time_now()">time_now()</a>, but provides as high resolution
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as the operating system can provide.</p>
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<a name="min_time()"></a>
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<a name="max_time()"></a></div>
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<div class="section" id="min-time-max-time">
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<h2>min_time() max_time()</h2>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/time.hpp">libtorrent/time.hpp</a>"</p>
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<pre class="literal-block">
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ptime <strong>max_time</strong> ();
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ptime <strong>min_time</strong> ();
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</pre>
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<p>the earliest and latest possible time points
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representable by <a class="reference external" href="reference-Time.html#ptime">ptime</a>.</p>
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<a name="microsec()"></a>
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<a name="minutes()"></a>
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<a name="hours()"></a>
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<a name="milliseconds()"></a>
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<a name="seconds()"></a></div>
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<div class="section" id="microsec-minutes-hours-milliseconds-seconds">
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<h2>microsec() minutes() hours() milliseconds() seconds()</h2>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/time.hpp">libtorrent/time.hpp</a>"</p>
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<pre class="literal-block">
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time_duration <strong>microsec</strong> (boost::int64_t s);
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time_duration <strong>seconds</strong> (boost::int64_t s);
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time_duration <strong>milliseconds</strong> (boost::int64_t s);
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time_duration <strong>minutes</strong> (boost::int64_t s);
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time_duration <strong>hours</strong> (boost::int64_t s);
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</pre>
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<p>returns a <a class="reference external" href="reference-Time.html#time_duration">time_duration</a> representing the specified number of seconds, milliseconds
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microseconds, minutes and hours.</p>
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<a name="total_seconds()"></a>
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<a name="total_microseconds()"></a>
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<a name="total_milliseconds()"></a></div>
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<div class="section" id="total-seconds-total-microseconds-total-milliseconds">
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<h2>total_seconds() total_microseconds() total_milliseconds()</h2>
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<p>Declared in "<a class="reference external" href="../include/libtorrent/time.hpp">libtorrent/time.hpp</a>"</p>
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<pre class="literal-block">
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boost::int64_t <strong>total_seconds</strong> (time_duration td);
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boost::int64_t <strong>total_milliseconds</strong> (time_duration td);
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boost::int64_t <strong>total_microseconds</strong> (time_duration td);
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</pre>
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<p>returns the number of seconds, milliseconds and microseconds
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a <a class="reference external" href="reference-Time.html#time_duration">time_duration</a> represents.</p>
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</div>
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</div>
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<span>Copyright © 2005-2013 Rasterbar Software.</span>
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