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<h1 id="firstHeading" class="firstHeading">timespec_get</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="c.html">c</a>&lrm; | <a href="c-chrono.html">chrono</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code>&lt;time.h&gt;</code></div>
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<div><span class="mw-geshi c source-c"><span class="kw4">int</span> timespec_get<span class="br0">(</span> <span class="kw1">struct</span> timespec <span class="sy2">*</span>ts, <span class="kw4">int</span> base <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
<td><span class="t-mark-rev t-since-c11">(C11 &#36215;)</span></td>
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<div><span class="mw-geshi c source-c"><span class="co2">#define TIME_UTC /* implementation-defined */</span></span></div>
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<td><span class="t-mark-rev t-since-c11">(C11 &#36215;)</span></td>
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<div class="t-li1"><span class="t-li">1)</span> &#20462;&#25913; <code>ts</code> &#25152;&#25351;&#21521;&#30340; <span class="t-lc">struct timespec</span> &#23545;&#35937;&#65292;&#20197;&#20445;&#26377;&#20197;&#26102;&#38388;&#22522;&#24213; <code>base</code> &#34920;&#31034;&#30340;&#24403;&#21069;&#26085;&#21382;&#26102;&#38388;&#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> &#23637;&#24320;&#25104;&#36866;&#29992;&#20316; <code>timespec_get</code> &#30340; <code>base</code> &#21442;&#25968;&#30340;&#20540;&#12290;</div>
<p>&#23454;&#29616;&#21487;&#20197;&#25552;&#20379;&#20854;&#20182;&#20197; <code>TIME_</code> &#20026;&#39318;&#30340;&#23439;&#24120;&#37327;&#65292;&#20197;&#25351;&#31034;&#26102;&#38388;&#22522;&#24213;&#12290;</p>
<p>&#33509; <code>base</code> &#31561;&#20110; <code>TIME_UTC</code> &#65292;&#21017;</p>
<ul>
<li>&#35774; <span class="t-c"><span class="mw-geshi c source-c">ts<span class="sy2">-</span><span class="sy1">&gt;</span>tv_sec</span></span> &#20026;&#23454;&#29616;&#23450;&#20041;&#30340;&#32426;&#20803;&#21518;&#30340;&#31186;&#25968;&#65292;&#25130;&#26029;&#21040;&#25972;&#25968;&#20540;&#12290;</li>
<li>&#35774; <span class="t-c"><span class="mw-geshi c source-c">ts<span class="sy2">-</span><span class="sy1">&gt;</span>tv_nsec</span></span> &#25104;&#21592;&#20026;&#32435;&#31186;&#25968;&#30340;&#25972;&#25968;&#20540;&#65292;&#25353;&#29031;&#31995;&#32479;&#26102;&#38047;&#30340;&#35299;&#26512;&#24230;&#33293;&#20837;&#12290;</li>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>ts</td>
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<td>&#25351;&#21521; <span class="t-c"><span class="mw-geshi c source-c"><span class="kw1">struct</span> timespec</span></span> &#31867;&#22411;&#23545;&#35937;&#30340;&#25351;&#38024;</td>
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<td>base</td>
<td>-</td>
<td><code>TIME_UTC</code> &#25110;&#20854;&#20182;&#20219;&#20309;&#25351;&#31034;&#26102;&#38388;&#22522;&#24213;&#30340;&#38750;&#38646;&#25972;&#25968;&#20540;</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#25104;&#21151;&#26159;&#36820;&#22238;<code>base</code>&#30340;&#20540;&#65292;&#21542;&#21017;&#36820;&#22238;&#38646;&#12290;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">&#27880;&#35299;</span></h3>
<p>POSIX &#20989;&#25968; <a rel="nofollow" class="external text" href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_getres.html"><code>clock_gettime(CLOCK_REALTIME, ts)</code></a> &#20134;&#21487;&#29992;&#20110;&#23558;&#20174;&#32426;&#20803;&#24320;&#22987;&#30340;&#26102;&#38388;&#20256;&#36798;&#32473; <code>struct timespec</code> &#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
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<div class="c source-c">
<pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;time.h&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw1">struct</span> timespec ts<span class="sy4">;</span>
timespec_get<span class="br0">(</span><span class="sy3">&amp;</span>ts, TIME_UTC<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">char</span> buff<span class="br0">[</span><span class="nu0">100</span><span class="br0">]</span><span class="sy4">;</span>
<a href="c-chrono-strftime.html"><span class="kw517">strftime</span></a><span class="br0">(</span>buff, <span class="kw4">sizeof</span> buff, <span class="st0">&quot;%D %T&quot;</span>, <a href="c-chrono-gmtime.html"><span class="kw519">gmtime</span></a><span class="br0">(</span><span class="sy3">&amp;</span>ts.<span class="me1">tv_sec</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<a href="c-io-fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">&quot;Current time: %s.%09ld UTC<span class="es1">\n</span>&quot;</span>, buff, ts.<span class="me1">tv_nsec</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">Current time: 02/18/15 14:34:03.048508855 UTC</pre></div>
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<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">&#24341;&#29992;</span></h3>
<div class="t-ref-std-17">
<ul>
<li>C17 &#26631;&#20934;&#65288;ISO/IEC 9899:2018&#65289;&#65306;</li>
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<dd>
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<li>7.27.2.5 The timespec_get function (p: 286)</li>
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<div class="t-ref-std-11">
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<li>C11 &#26631;&#20934;&#65288;ISO/IEC 9899:2011&#65289;&#65306;</li>
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<li>7.27.2.5 The timespec_get function (p: 390)</li>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="c-chrono-timespec.html"><span class="t-lines"><span>timespec</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
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<td>&#21333;&#20301;&#20026;&#31186;&#21644;&#32435;&#31186;&#30340;&#26102;&#38388;<br />
<span class="t-mark">(&#32467;&#26500;&#20307;)</span></td>
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<div class="t-dsc-member-div">
<div><a href="c-chrono-timespec_getres.html"><span class="t-lines"><span>timespec_getres</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c23">(C23)</span></span></span></div>
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<td>&#36820;&#22238;&#22522;&#20110;&#32473;&#23450;&#26102;&#38388;&#22522;&#24213;&#30340;&#26085;&#21382;&#26102;&#38388;&#30340;&#35299;&#26512;&#24230;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<div class="t-dsc-member-div">
<div><a href="c-chrono-time.html"><span class="t-lines"><span>time</span></span></a></div>
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<td>&#36820;&#22238;&#32426;&#20803;&#24320;&#22987;&#32463;&#36807;&#30340;&#24403;&#21069;&#31995;&#32479;&#26085;&#21382;&#26102;&#38388;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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