releases/1.0.1/cpp-client-api/status_8h.html - kudu-site - Git at Google

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 <h1>include/kudu/util/status.h File Reference</h1><code>#include &lt;stdint.h&gt;</code><br/>
 <code>#include &lt;string&gt;</code><br/>
 <code>#include &quot;kudu/client/stubs.h&quot;</code><br/>
 <code>#include &quot;kudu/util/kudu_export.h&quot;</code><br/>
 <code>#include &quot;kudu/util/slice.h&quot;</code><br/>

 <p><a href="status_8h_source.html">Go to the source code of this file.</a></p>
 <table border="0" cellpadding="0" cellspacing="0">
 <tr><td colspan="2"><h2>Classes</h2></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1Status.html">kudu::Status</a></td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A representation of an operation's outcome.  <a href="classkudu_1_1Status.html#_details">More...</a><br/></td></tr>
 <tr><td colspan="2"><h2>Defines</h2></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a0de56a3f0e9d83b8ffdd63eac83c54ab">KUDU_RETURN_NOT_OK</a>(s)</td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the given status if it is not <code>OK</code>.  <a href="#a0de56a3f0e9d83b8ffdd63eac83c54ab"></a><br/></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#af66b8458f1d3f1264c1da86744e29e46">KUDU_RETURN_NOT_OK_PREPEND</a>(s, msg)</td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the given status if it is not OK, but first clone it and prepend the given message.  <a href="#af66b8458f1d3f1264c1da86744e29e46"></a><br/></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a58d31c81bf1101a3ead737e9a4a4f223">KUDU_RETURN_NOT_OK_RET</a>(to_call, to_return)</td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return <code>to_return</code> if <code>to_call</code> returns a bad status. The substitution for 'to_return' may reference the variable <code>s</code> for the bad status.  <a href="#a58d31c81bf1101a3ead737e9a4a4f223"></a><br/></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a1e64fec5ef85c0c738f6ac3f398f607e">KUDU_WARN_NOT_OK</a>(to_call, warning_prefix)</td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Emit a warning if <code>to_call</code> returns a bad status.  <a href="#a1e64fec5ef85c0c738f6ac3f398f607e"></a><br/></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#abbd85cc2c5535627091bb06a21918150">KUDU_LOG_AND_RETURN</a>(level, status)</td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Log the given status and return immediately.  <a href="#abbd85cc2c5535627091bb06a21918150"></a><br/></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a706c9f6ef1715b8f7a9185fb3c247d3f">KUDU_CHECK_OK_PREPEND</a>(to_call, msg)</td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">If <code>to_call</code> returns a bad status, CHECK immediately with a logged message of <code>msg</code> followed by the status.  <a href="#a706c9f6ef1715b8f7a9185fb3c247d3f"></a><br/></td></tr>
 <tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac503ba85e942147294cdc82087da60f6"></a><!-- doxytag: member="status.h::KUDU_CHECK_OK" ref="ac503ba85e942147294cdc82087da60f6" args="(s)" -->
 #define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#ac503ba85e942147294cdc82087da60f6">KUDU_CHECK_OK</a>(s)&nbsp;&nbsp;&nbsp;KUDU_CHECK_OK_PREPEND(s, &quot;Bad status&quot;)</td></tr>
 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">If the status is bad, CHECK immediately, appending the status to the logged message. <br/></td></tr>
 </table>
 <hr/><a name="_details"></a><h2>Detailed Description</h2>
 <p>This header is used in both the Kudu build as well as in builds of applications that use the Kudu C++ client. In the latter we need to be careful to "namespace" our macros, to avoid colliding or overriding with similarly named macros belonging to the application.</p>
 <p>KUDU_HEADERS_USE_SHORT_STATUS_MACROS handles this behavioral change. When defined, we're building Kudu and: </p>
 <ul>
 <li>Non-namespaced macros are allowed and mapped to the namespaced versions defined above. </li>
 <li>Namespaced versions of glog macros are mapped to the real glog macros (otherwise the macros are defined in the C++ client stubs). </li>
 </ul>
 <hr/><h2>Define Documentation</h2>
 <a class="anchor" id="a706c9f6ef1715b8f7a9185fb3c247d3f"></a><!-- doxytag: member="status.h::KUDU_CHECK_OK_PREPEND" ref="a706c9f6ef1715b8f7a9185fb3c247d3f" args="(to_call, msg)" -->
 <div class="memitem">
 <div class="memproto">
       <table class="memname">
         <tr>
           <td class="memname">#define KUDU_CHECK_OK_PREPEND</td>
           <td>(</td>
           <td class="paramtype">to_call, </td>
         </tr>
         <tr>
           <td class="paramkey"></td>
           <td></td>
           <td class="paramtype">msg&nbsp;</td>
           <td class="paramname"></td>
           <td>&nbsp;)&nbsp;</td>
           <td></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">
 <b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
     const ::kudu::Status&amp; _s = (to_call);                   \
     KUDU_CHECK(_s.ok()) &lt;&lt; (msg) &lt;&lt; <span class="stringliteral">&quot;: &quot;</span> &lt;&lt; _s.ToString();  \
   } <span class="keywordflow">while</span> (0);
 </pre></div>
 <p>If <code>to_call</code> returns a bad status, CHECK immediately with a logged message of <code>msg</code> followed by the status. </p>

 </div>
 </div>
 <a class="anchor" id="abbd85cc2c5535627091bb06a21918150"></a><!-- doxytag: member="status.h::KUDU_LOG_AND_RETURN" ref="abbd85cc2c5535627091bb06a21918150" args="(level, status)" -->
 <div class="memitem">
 <div class="memproto">
       <table class="memname">
         <tr>
           <td class="memname">#define KUDU_LOG_AND_RETURN</td>
           <td>(</td>
           <td class="paramtype">level, </td>
         </tr>
         <tr>
           <td class="paramkey"></td>
           <td></td>
           <td class="paramtype">status&nbsp;</td>
           <td class="paramname"></td>
           <td>&nbsp;)&nbsp;</td>
           <td></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">
 <b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
     const ::kudu::Status&amp; _s = (status);        \
     KUDU_LOG(level) &lt;&lt; _s.ToString(); \
     <span class="keywordflow">return</span> _s; \
   } <span class="keywordflow">while</span> (0);
 </pre></div>
 <p>Log the given status and return immediately. </p>

 </div>
 </div>
 <a class="anchor" id="a0de56a3f0e9d83b8ffdd63eac83c54ab"></a><!-- doxytag: member="status.h::KUDU_RETURN_NOT_OK" ref="a0de56a3f0e9d83b8ffdd63eac83c54ab" args="(s)" -->
 <div class="memitem">
 <div class="memproto">
       <table class="memname">
         <tr>
           <td class="memname">#define KUDU_RETURN_NOT_OK</td>
           <td>(</td>
           <td class="paramtype">s&nbsp;</td>
           <td class="paramname"></td>
           <td>&nbsp;)&nbsp;</td>
           <td></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">
 <b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
     const ::kudu::Status&amp; _s = (s);             \
     <span class="keywordflow">if</span> (PREDICT_FALSE(!_s.ok())) <span class="keywordflow">return</span> _s;     \
   } <span class="keywordflow">while</span> (0);
 </pre></div>
 <p>Return the given status if it is not <code>OK</code>. </p>

 </div>
 </div>
 <a class="anchor" id="af66b8458f1d3f1264c1da86744e29e46"></a><!-- doxytag: member="status.h::KUDU_RETURN_NOT_OK_PREPEND" ref="af66b8458f1d3f1264c1da86744e29e46" args="(s, msg)" -->
 <div class="memitem">
 <div class="memproto">
       <table class="memname">
         <tr>
           <td class="memname">#define KUDU_RETURN_NOT_OK_PREPEND</td>
           <td>(</td>
           <td class="paramtype">s, </td>
         </tr>
         <tr>
           <td class="paramkey"></td>
           <td></td>
           <td class="paramtype">msg&nbsp;</td>
           <td class="paramname"></td>
           <td>&nbsp;)&nbsp;</td>
           <td></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">
 <b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
     const ::kudu::Status&amp; _s = (s);                              \
     <span class="keywordflow">if</span> (PREDICT_FALSE(!_s.ok())) <span class="keywordflow">return</span> _s.CloneAndPrepend(msg); \
   } <span class="keywordflow">while</span> (0);
 </pre></div>
 <p>Return the given status if it is not OK, but first clone it and prepend the given message. </p>

 </div>
 </div>
 <a class="anchor" id="a58d31c81bf1101a3ead737e9a4a4f223"></a><!-- doxytag: member="status.h::KUDU_RETURN_NOT_OK_RET" ref="a58d31c81bf1101a3ead737e9a4a4f223" args="(to_call, to_return)" -->
 <div class="memitem">
 <div class="memproto">
       <table class="memname">
         <tr>
           <td class="memname">#define KUDU_RETURN_NOT_OK_RET</td>
           <td>(</td>
           <td class="paramtype">to_call, </td>
         </tr>
         <tr>
           <td class="paramkey"></td>
           <td></td>
           <td class="paramtype">to_return&nbsp;</td>
           <td class="paramname"></td>
           <td>&nbsp;)&nbsp;</td>
           <td></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">
 <b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
     const ::kudu::Status&amp; s = (to_call);                \
     <span class="keywordflow">if</span> (PREDICT_FALSE(!s.ok())) <span class="keywordflow">return</span> (to_return);  \
   } <span class="keywordflow">while</span> (0);
 </pre></div>
 <p>Return <code>to_return</code> if <code>to_call</code> returns a bad status. The substitution for 'to_return' may reference the variable <code>s</code> for the bad status. </p>

 </div>
 </div>
 <a class="anchor" id="a1e64fec5ef85c0c738f6ac3f398f607e"></a><!-- doxytag: member="status.h::KUDU_WARN_NOT_OK" ref="a1e64fec5ef85c0c738f6ac3f398f607e" args="(to_call, warning_prefix)" -->
 <div class="memitem">
 <div class="memproto">
       <table class="memname">
         <tr>
           <td class="memname">#define KUDU_WARN_NOT_OK</td>
           <td>(</td>
           <td class="paramtype">to_call, </td>
         </tr>
         <tr>
           <td class="paramkey"></td>
           <td></td>
           <td class="paramtype">warning_prefix&nbsp;</td>
           <td class="paramname"></td>
           <td>&nbsp;)&nbsp;</td>
           <td></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">
 <b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
     const ::kudu::Status&amp; _s = (to_call);              \
     <span class="keywordflow">if</span> (PREDICT_FALSE(!_s.ok())) { \
       KUDU_LOG(WARNING) &lt;&lt; (warning_prefix) &lt;&lt; <span class="stringliteral">&quot;: &quot;</span> &lt;&lt; _s.ToString();  \
     } \
   } <span class="keywordflow">while</span> (0);
 </pre></div>
 <p>Emit a warning if <code>to_call</code> returns a bad status. </p>

 </div>
 </div>
 </div>
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	<h1>include/kudu/util/status.h File Reference</h1><code>#include <stdint.h></code><br/>
	<code>#include <string></code><br/>
	<code>#include "kudu/client/stubs.h"</code><br/>
	<code>#include "kudu/util/kudu_export.h"</code><br/>
	<code>#include "kudu/util/slice.h"</code><br/>

	<p><a href="status_8h_source.html">Go to the source code of this file.</a></p>
	<table border="0" cellpadding="0" cellspacing="0">
	<tr><td colspan="2"><h2>Classes</h2></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1Status.html">kudu::Status</a></td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">A representation of an operation's outcome. <a href="classkudu_1_1Status.html#_details">More...</a><br/></td></tr>
	<tr><td colspan="2"><h2>Defines</h2></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a0de56a3f0e9d83b8ffdd63eac83c54ab">KUDU_RETURN_NOT_OK</a>(s)</td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the given status if it is not <code>OK</code>. <a href="#a0de56a3f0e9d83b8ffdd63eac83c54ab"></a><br/></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#af66b8458f1d3f1264c1da86744e29e46">KUDU_RETURN_NOT_OK_PREPEND</a>(s, msg)</td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the given status if it is not OK, but first clone it and prepend the given message. <a href="#af66b8458f1d3f1264c1da86744e29e46"></a><br/></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a58d31c81bf1101a3ead737e9a4a4f223">KUDU_RETURN_NOT_OK_RET</a>(to_call, to_return)</td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">Return <code>to_return</code> if <code>to_call</code> returns a bad status. The substitution for 'to_return' may reference the variable <code>s</code> for the bad status. <a href="#a58d31c81bf1101a3ead737e9a4a4f223"></a><br/></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a1e64fec5ef85c0c738f6ac3f398f607e">KUDU_WARN_NOT_OK</a>(to_call, warning_prefix)</td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">Emit a warning if <code>to_call</code> returns a bad status. <a href="#a1e64fec5ef85c0c738f6ac3f398f607e"></a><br/></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#abbd85cc2c5535627091bb06a21918150">KUDU_LOG_AND_RETURN</a>(level, status)</td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">Log the given status and return immediately. <a href="#abbd85cc2c5535627091bb06a21918150"></a><br/></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#a706c9f6ef1715b8f7a9185fb3c247d3f">KUDU_CHECK_OK_PREPEND</a>(to_call, msg)</td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">If <code>to_call</code> returns a bad status, CHECK immediately with a logged message of <code>msg</code> followed by the status. <a href="#a706c9f6ef1715b8f7a9185fb3c247d3f"></a><br/></td></tr>
	<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac503ba85e942147294cdc82087da60f6"></a><!-- doxytag: member="status.h::KUDU_CHECK_OK" ref="ac503ba85e942147294cdc82087da60f6" args="(s)" -->
	#define </td><td class="memItemRight" valign="bottom"><a class="el" href="status_8h.html#ac503ba85e942147294cdc82087da60f6">KUDU_CHECK_OK</a>(s)   KUDU_CHECK_OK_PREPEND(s, "Bad status")</td></tr>
	<tr><td class="mdescLeft"> </td><td class="mdescRight">If the status is bad, CHECK immediately, appending the status to the logged message. <br/></td></tr>
	</table>
	<hr/><a name="_details"></a><h2>Detailed Description</h2>
	<p>This header is used in both the Kudu build as well as in builds of applications that use the Kudu C++ client. In the latter we need to be careful to "namespace" our macros, to avoid colliding or overriding with similarly named macros belonging to the application.</p>
	<p>KUDU_HEADERS_USE_SHORT_STATUS_MACROS handles this behavioral change. When defined, we're building Kudu and: </p>
	<ul>
	<li>Non-namespaced macros are allowed and mapped to the namespaced versions defined above. </li>
	<li>Namespaced versions of glog macros are mapped to the real glog macros (otherwise the macros are defined in the C++ client stubs). </li>
	</ul>
	<hr/><h2>Define Documentation</h2>
	<a class="anchor" id="a706c9f6ef1715b8f7a9185fb3c247d3f"></a><!-- doxytag: member="status.h::KUDU_CHECK_OK_PREPEND" ref="a706c9f6ef1715b8f7a9185fb3c247d3f" args="(to_call, msg)" -->
	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">#define KUDU_CHECK_OK_PREPEND</td>
	<td>(</td>
	<td class="paramtype">to_call, </td>
	</tr>
	<tr>
	<td class="paramkey"></td>
	<td></td>
	<td class="paramtype">msg </td>
	<td class="paramname"></td>
	<td> ) </td>
	<td></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">
	<b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
	const ::kudu::Status& _s = (to_call); \
	KUDU_CHECK(_s.ok()) << (msg) << <span class="stringliteral">": "</span> << _s.ToString(); \
	} <span class="keywordflow">while</span> (0);
	</pre></div>
	<p>If <code>to_call</code> returns a bad status, CHECK immediately with a logged message of <code>msg</code> followed by the status. </p>

	</div>
	</div>
	<a class="anchor" id="abbd85cc2c5535627091bb06a21918150"></a><!-- doxytag: member="status.h::KUDU_LOG_AND_RETURN" ref="abbd85cc2c5535627091bb06a21918150" args="(level, status)" -->
	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">#define KUDU_LOG_AND_RETURN</td>
	<td>(</td>
	<td class="paramtype">level, </td>
	</tr>
	<tr>
	<td class="paramkey"></td>
	<td></td>
	<td class="paramtype">status </td>
	<td class="paramname"></td>
	<td> ) </td>
	<td></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">
	<b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
	const ::kudu::Status& _s = (status); \
	KUDU_LOG(level) << _s.ToString(); \
	<span class="keywordflow">return</span> _s; \
	} <span class="keywordflow">while</span> (0);
	</pre></div>
	<p>Log the given status and return immediately. </p>

	</div>
	</div>
	<a class="anchor" id="a0de56a3f0e9d83b8ffdd63eac83c54ab"></a><!-- doxytag: member="status.h::KUDU_RETURN_NOT_OK" ref="a0de56a3f0e9d83b8ffdd63eac83c54ab" args="(s)" -->
	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">#define KUDU_RETURN_NOT_OK</td>
	<td>(</td>
	<td class="paramtype">s </td>
	<td class="paramname"></td>
	<td> ) </td>
	<td></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">
	<b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
	const ::kudu::Status& _s = (s); \
	<span class="keywordflow">if</span> (PREDICT_FALSE(!_s.ok())) <span class="keywordflow">return</span> _s; \
	} <span class="keywordflow">while</span> (0);
	</pre></div>
	<p>Return the given status if it is not <code>OK</code>. </p>

	</div>
	</div>
	<a class="anchor" id="af66b8458f1d3f1264c1da86744e29e46"></a><!-- doxytag: member="status.h::KUDU_RETURN_NOT_OK_PREPEND" ref="af66b8458f1d3f1264c1da86744e29e46" args="(s, msg)" -->
	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">#define KUDU_RETURN_NOT_OK_PREPEND</td>
	<td>(</td>
	<td class="paramtype">s, </td>
	</tr>
	<tr>
	<td class="paramkey"></td>
	<td></td>
	<td class="paramtype">msg </td>
	<td class="paramname"></td>
	<td> ) </td>
	<td></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">
	<b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
	const ::kudu::Status& _s = (s); \
	<span class="keywordflow">if</span> (PREDICT_FALSE(!_s.ok())) <span class="keywordflow">return</span> _s.CloneAndPrepend(msg); \
	} <span class="keywordflow">while</span> (0);
	</pre></div>
	<p>Return the given status if it is not OK, but first clone it and prepend the given message. </p>

	</div>
	</div>
	<a class="anchor" id="a58d31c81bf1101a3ead737e9a4a4f223"></a><!-- doxytag: member="status.h::KUDU_RETURN_NOT_OK_RET" ref="a58d31c81bf1101a3ead737e9a4a4f223" args="(to_call, to_return)" -->
	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">#define KUDU_RETURN_NOT_OK_RET</td>
	<td>(</td>
	<td class="paramtype">to_call, </td>
	</tr>
	<tr>
	<td class="paramkey"></td>
	<td></td>
	<td class="paramtype">to_return </td>
	<td class="paramname"></td>
	<td> ) </td>
	<td></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">
	<b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
	const ::kudu::Status& s = (to_call); \
	<span class="keywordflow">if</span> (PREDICT_FALSE(!s.ok())) <span class="keywordflow">return</span> (to_return); \
	} <span class="keywordflow">while</span> (0);
	</pre></div>
	<p>Return <code>to_return</code> if <code>to_call</code> returns a bad status. The substitution for 'to_return' may reference the variable <code>s</code> for the bad status. </p>

	</div>
	</div>
	<a class="anchor" id="a1e64fec5ef85c0c738f6ac3f398f607e"></a><!-- doxytag: member="status.h::KUDU_WARN_NOT_OK" ref="a1e64fec5ef85c0c738f6ac3f398f607e" args="(to_call, warning_prefix)" -->
	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">#define KUDU_WARN_NOT_OK</td>
	<td>(</td>
	<td class="paramtype">to_call, </td>
	</tr>
	<tr>
	<td class="paramkey"></td>
	<td></td>
	<td class="paramtype">warning_prefix </td>
	<td class="paramname"></td>
	<td> ) </td>
	<td></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">
	<b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordflow">do</span> { \
	const ::kudu::Status& _s = (to_call); \
	<span class="keywordflow">if</span> (PREDICT_FALSE(!_s.ok())) { \
	KUDU_LOG(WARNING) << (warning_prefix) << <span class="stringliteral">": "</span> << _s.ToString(); \
	} \
	} <span class="keywordflow">while</span> (0);
	</pre></div>
	<p>Emit a warning if <code>to_call</code> returns a bad status. </p>

	</div>
	</div>
	</div>
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