carto
/
grpc


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135
							<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.17"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>GRPC PHP: GRPC C STYLE GUIDE</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectalign" style="padding-left: 0.5em;">
   <div id="projectname">GRPC PHP
   &#160;<span id="projectnumber">1.31.0</span>
   </div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.17 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
  initMenu('',true,false,'search.php','Search');
  $(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

</div><!-- top -->
<div class="PageDoc"><div class="header">
  <div class="headertitle">
<div class="title">GRPC C STYLE GUIDE </div>  </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><h1><a class="anchor" id="autotoc_md33"></a>
Background</h1>
<p>Here we document style rules for C usage in the gRPC Core library.</p>
<h1><a class="anchor" id="autotoc_md34"></a>
General</h1>
<ul>
<li>Layout rules are defined by clang-format, and all code should be passed through clang-format. A (docker-based) script to do so is included in <a href="../tools/distrib/clang_format_code.sh">tools/distrib/clang_format_code.sh</a>.</li>
</ul>
<h1><a class="anchor" id="autotoc_md35"></a>
Header Files</h1>
<ul>
<li>Public header files (those in the include/grpc tree) should compile as pedantic C89.</li>
<li>Public header files should be includable from C++ programs. That is, they should include the following: <div class="fragment"><div class="line"><span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div>
<div class="line"><span class="preprocessor"># endif</span></div>
<div class="line"> </div>
<div class="line"><span class="comment">/* ... body of file ... */</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line">}</div>
<div class="line"><span class="preprocessor"># endif</span></div>
</div><!-- fragment --></li>
<li>Header files should be self-contained and end in .h.</li>
<li><p class="startli">All header files should have a <code>#define</code> guard to prevent multiple inclusion. To guarantee uniqueness they should be based on the file's path.</p>
<p class="startli">For public headers: <code>include/grpc/grpc.h</code> → <code>GRPC_GRPC_H</code></p>
<p class="startli">For private headers: <code>src/core/lib/channel/channel_stack.h</code> → <code>GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H</code></p>
</li>
</ul>
<h1><a class="anchor" id="autotoc_md36"></a>
Variable Initialization</h1>
<p>When declaring a (non-static) pointer variable, always initialize it to <code>NULL</code>. Even in the case of static pointer variables, it's recommended to explicitly initialize them to <code>NULL</code>.</p>
<h1><a class="anchor" id="autotoc_md37"></a>
C99 Features</h1>
<ul>
<li>Variable sized arrays are not allowed.</li>
<li>Do not use the 'inline' keyword.</li>
<li>Flexible array members are allowed (<a href="https://en.wikipedia.org/wiki/Flexible_array_member">https://en.wikipedia.org/wiki/Flexible_array_member</a>).</li>
</ul>
<h1><a class="anchor" id="autotoc_md38"></a>
Comments</h1>
<p>Within public header files, only <code>/* */</code> comments are allowed.</p>
<p>Within implementation files and private headers, either single line <code>//</code> or multi line <code>/* */</code> comments are allowed. Only one comment style per file is allowed however (i.e. if single line comments are used anywhere within a file, ALL comments within that file must be single line comments).</p>
<h1><a class="anchor" id="autotoc_md39"></a>
Symbol Names</h1>
<ul>
<li>Non-static functions must be prefixed by <code>grpc_</code></li>
<li>Static functions must <em>not</em> be prefixed by <code>grpc_</code></li>
<li>Typenames of <code>struct</code>s , <code>union</code>s, and <code>enum</code>s must be prefixed by <code>grpc_</code> if they are declared in a header file. They must not be prefixed by <code>grpc_</code> if they are declared in a source file.</li>
<li>Enumeration values and <code>#define</code> names must be uppercase. All other values must be lowercase.</li>
<li>Enumeration values or <code>#define</code> names defined in a header file must be prefixed with <code>GRPC_</code> (except for <code>#define</code> macros that are being used to substitute functions; those should follow the general rules for functions). Enumeration values or <code>#define</code>s defined in source files must not be prefixed with <code>GRPC_</code>.</li>
<li>Multiple word identifiers use underscore as a delimiter, <em>never</em> camel case. E.g. <code>variable_name</code>.</li>
</ul>
<h1><a class="anchor" id="autotoc_md40"></a>
Functions</h1>
<ul>
<li>The use of <a href="http://man7.org/linux/man-pages/man3/atexit.3.html"><code>atexit()</code></a> is in forbidden in libgrpc. </li>
</ul>
</div></div><!-- contents -->
</div><!-- PageDoc -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Fri Aug 14 2020 19:53:54 for GRPC PHP by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.17
</small></address>
</body>
</html>