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man/sd_journal_get_realtime_usec.html
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  <a href="systemd.directives.html">Directives </a>·
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  <a href="../python-systemd/index.html">Python </a>·
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  <a href="../libudev/index.html">libudev </a>·
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  <a href="../libudev/index.html">gudev </a><hr><div class="refentry"><a name="sd_journal_get_realtime_usec"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sd_journal_get_realtime_usec, sd_journal_get_monotonic_usec — Read timestamps from the current journal entry</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include &lt;systemd/sd-journal.h&gt;</pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_journal_get_realtime_usec</b>(</code></td><td>sd_journal* <var class="pdparam">j</var>, </td></tr><tr><td> </td><td>uint64_t* <var class="pdparam">usec</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_journal_get_monotonic_usec</b>(</code></td><td>sd_journal* <var class="pdparam">j</var>, </td></tr><tr><td> </td><td>uint64_t* <var class="pdparam">usec</var>, </td></tr><tr><td> </td><td>sd_id128_t* <var class="pdparam">boot_id</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idp3970288"></a><h2>Description</h2><p><code class="function">sd_journal_get_realtime_usec()</code>
 
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  <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 202</span><hr><div class="refentry"><a name="sd_journal_get_realtime_usec"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sd_journal_get_realtime_usec, sd_journal_get_monotonic_usec — Read timestamps from the current journal entry</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include &lt;systemd/sd-journal.h&gt;</pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_journal_get_realtime_usec</b>(</code></td><td>sd_journal* <var class="pdparam">j</var>, </td></tr><tr><td> </td><td>uint64_t* <var class="pdparam">usec</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_journal_get_monotonic_usec</b>(</code></td><td>sd_journal* <var class="pdparam">j</var>, </td></tr><tr><td> </td><td>uint64_t* <var class="pdparam">usec</var>, </td></tr><tr><td> </td><td>sd_id128_t* <var class="pdparam">boot_id</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idp124800"></a><h2>Description</h2><p><code class="function">sd_journal_get_realtime_usec()</code>
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                gets the realtime (wallclock) timestamp of the
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                current journal entry.  It takes two arguments: the
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                journal context object and a pointer to a 64 Bit
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                system boot.</p><p>Note that these functions will not work before
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                <a href="sd_journal_next.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_next</span>(3)</span></a>
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                (or related call) has been called at least
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                once, in order to position the read pointer at a valid entry.</p></div><div class="refsect1"><a name="idp3977184"></a><h2>Return Value</h2><p><code class="function">sd_journal_get_realtime_usec()</code>
 
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                once, in order to position the read pointer at a valid entry.</p></div><div class="refsect1"><a name="idp3963552"></a><h2>Return Value</h2><p><code class="function">sd_journal_get_realtime_usec()</code>
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                and
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                <code class="function">sd_journal_get_monotonic_usec()</code>
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                returns 0 on success or a negative errno-style error
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                code. If the boot ID parameter was passed NULL and the
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                monotonic timestamp of the current journal entry is
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                not of the current system boot, -ESTALE is returned by <code class="function">sd_journal_get_monotonic_usec()</code>.</p></div><div class="refsect1"><a name="idp26416"></a><h2>Notes</h2><p>The
 
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                not of the current system boot, -ESTALE is returned by <code class="function">sd_journal_get_monotonic_usec()</code>.</p></div><div class="refsect1"><a name="idp3967072"></a><h2>Notes</h2><p>The
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                <code class="function">sd_journal_get_realtime_usec()</code>
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                and
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                <code class="function">sd_journal_get_monotonic_usec()</code>
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                be compiled and linked to with the
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                <code class="literal">libsystemd-journal</code>
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                <a href="pkg-config.html"><span class="citerefentry"><span class="refentrytitle">pkg-config</span>(1)</span></a>
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                file.</p></div><div class="refsect1"><a name="idp30768"></a><h2>See Also</h2><p>
 
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                file.</p></div><div class="refsect1"><a name="idp3971472"></a><h2>See Also</h2><p>
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                        <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
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                        <a href="sd-journal.html"><span class="citerefentry"><span class="refentrytitle">sd-journal</span>(3)</span></a>,
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                        <a href="sd_journal_open.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_open</span>(3)</span></a>,