1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2<html xmlns="http://www.w3.org/1999/xhtml"> 3<head> 4<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> 5<meta http-equiv="X-UA-Compatible" content="IE=9"/> 6<meta name="generator" content="Doxygen 1.8.12"/> 7<meta name="viewport" content="width=device-width, initial-scale=1"/> 8<title>libcbor: src/cbor/internal/memory_utils.h File Reference</title> 9<link href="tabs.css" rel="stylesheet" type="text/css"/> 10<script type="text/javascript" src="jquery.js"></script> 11<script type="text/javascript" src="dynsections.js"></script> 12<link href="search/search.css" rel="stylesheet" type="text/css"/> 13<script type="text/javascript" src="search/searchdata.js"></script> 14<script type="text/javascript" src="search/search.js"></script> 15<link href="doxygen.css" rel="stylesheet" type="text/css" /> 16<link href="customdoxygen.css" rel="stylesheet" type="text/css"/> 17</head> 18<body> 19<div id="top"><!-- do not remove this div, it is closed by doxygen! --> 20<div id="titlearea"> 21<table cellspacing="0" cellpadding="0"> 22 <tbody> 23 <tr style="height: 56px;"> 24 <td id="projectalign" style="padding-left: 0.5em;"> 25 <div id="projectname">libcbor 26  <span id="projectnumber">0.5.0</span> 27 </div> 28 <div id="projectbrief">libcbor is a C library for parsing and generating CBOR, the general-purpose schema-less binary data format.</div> 29 </td> 30 </tr> 31 </tbody> 32</table> 33</div> 34<!-- end header part --> 35<!-- Generated by Doxygen 1.8.12 --> 36<script type="text/javascript"> 37var searchBox = new SearchBox("searchBox", "search",false,'Search'); 38</script> 39<script type="text/javascript" src="menudata.js"></script> 40<script type="text/javascript" src="menu.js"></script> 41<script type="text/javascript"> 42$(function() { 43 initMenu('',true,false,'search.php','Search'); 44 $(document).ready(function() { init_search(); }); 45}); 46</script> 47<div id="main-nav"></div> 48<!-- window showing the filter options --> 49<div id="MSearchSelectWindow" 50 onmouseover="return searchBox.OnSearchSelectShow()" 51 onmouseout="return searchBox.OnSearchSelectHide()" 52 onkeydown="return searchBox.OnSearchSelectKey(event)"> 53</div> 54 55<!-- iframe showing the search results (closed by default) --> 56<div id="MSearchResultsWindow"> 57<iframe src="javascript:void(0)" frameborder="0" 58 name="MSearchResults" id="MSearchResults"> 59</iframe> 60</div> 61 62<div id="nav-path" class="navpath"> 63 <ul> 64<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_cb565ba51d82ea933604984cbab6233d.html">cbor</a></li><li class="navelem"><a class="el" href="dir_3ebe94c85f6786bf802771098c1d09bb.html">internal</a></li> </ul> 65</div> 66</div><!-- top --> 67<div class="header"> 68 <div class="summary"> 69<a href="#func-members">Functions</a> </div> 70 <div class="headertitle"> 71<div class="title">memory_utils.h File Reference</div> </div> 72</div><!--header--> 73<div class="contents"> 74<div class="textblock"><code>#include <string.h></code><br /> 75<code>#include <stdbool.h></code><br /> 76</div> 77<p><a href="memory__utils_8h_source.html">Go to the source code of this file.</a></p> 78<table class="memberdecls"> 79<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> 80Functions</h2></td></tr> 81<tr class="memitem:abdee08be3f4cff35a94279fda66c4778"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="memory__utils_8h.html#abdee08be3f4cff35a94279fda66c4778">_cbor_safe_to_multiply</a> (size_t a, size_t b)</td></tr> 82<tr class="memdesc:abdee08be3f4cff35a94279fda66c4778"><td class="mdescLeft"> </td><td class="mdescRight">Can a and b be multiplied without overflowing size_t? <a href="#abdee08be3f4cff35a94279fda66c4778">More...</a><br /></td></tr> 83<tr class="separator:abdee08be3f4cff35a94279fda66c4778"><td class="memSeparator" colspan="2"> </td></tr> 84<tr class="memitem:a7bfbe0ac179b30f38bfeb9fe432ad4ec"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="memory__utils_8h.html#a7bfbe0ac179b30f38bfeb9fe432ad4ec">_cbor_alloc_multiple</a> (size_t item_size, size_t item_count)</td></tr> 85<tr class="memdesc:a7bfbe0ac179b30f38bfeb9fe432ad4ec"><td class="mdescLeft"> </td><td class="mdescRight">Overflow-proof contiguous array allocation. <a href="#a7bfbe0ac179b30f38bfeb9fe432ad4ec">More...</a><br /></td></tr> 86<tr class="separator:a7bfbe0ac179b30f38bfeb9fe432ad4ec"><td class="memSeparator" colspan="2"> </td></tr> 87<tr class="memitem:afd7a22ccd3b44d6ff668e14c3a006e40"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="memory__utils_8h.html#afd7a22ccd3b44d6ff668e14c3a006e40">_cbor_realloc_multiple</a> (void *pointer, size_t item_size, size_t item_count)</td></tr> 88<tr class="memdesc:afd7a22ccd3b44d6ff668e14c3a006e40"><td class="mdescLeft"> </td><td class="mdescRight">Overflow-proof contiguous array reallocation. <a href="#afd7a22ccd3b44d6ff668e14c3a006e40">More...</a><br /></td></tr> 89<tr class="separator:afd7a22ccd3b44d6ff668e14c3a006e40"><td class="memSeparator" colspan="2"> </td></tr> 90</table> 91<h2 class="groupheader">Function Documentation</h2> 92<a id="a7bfbe0ac179b30f38bfeb9fe432ad4ec"></a> 93<h2 class="memtitle"><span class="permalink"><a href="#a7bfbe0ac179b30f38bfeb9fe432ad4ec">§ </a></span>_cbor_alloc_multiple()</h2> 94 95<div class="memitem"> 96<div class="memproto"> 97 <table class="memname"> 98 <tr> 99 <td class="memname">void* _cbor_alloc_multiple </td> 100 <td>(</td> 101 <td class="paramtype">size_t </td> 102 <td class="paramname"><em>item_size</em>, </td> 103 </tr> 104 <tr> 105 <td class="paramkey"></td> 106 <td></td> 107 <td class="paramtype">size_t </td> 108 <td class="paramname"><em>item_count</em> </td> 109 </tr> 110 <tr> 111 <td></td> 112 <td>)</td> 113 <td></td><td></td> 114 </tr> 115 </table> 116</div><div class="memdoc"> 117 118<p>Overflow-proof contiguous array allocation. </p> 119<dl class="params"><dt>Parameters</dt><dd> 120 <table class="params"> 121 <tr><td class="paramname">item_size</td><td></td></tr> 122 <tr><td class="paramname">item_count</td><td></td></tr> 123 </table> 124 </dd> 125</dl> 126<dl class="section return"><dt>Returns</dt><dd>Region of item_size * item_count bytes, or NULL if the total size overflows size_t or the underlying allocator failed </dd></dl> 127 128<p>Definition at line <a class="el" href="memory__utils_8c_source.html#l00030">30</a> of file <a class="el" href="memory__utils_8c_source.html">memory_utils.c</a>.</p> 129 130</div> 131</div> 132<a id="afd7a22ccd3b44d6ff668e14c3a006e40"></a> 133<h2 class="memtitle"><span class="permalink"><a href="#afd7a22ccd3b44d6ff668e14c3a006e40">§ </a></span>_cbor_realloc_multiple()</h2> 134 135<div class="memitem"> 136<div class="memproto"> 137 <table class="memname"> 138 <tr> 139 <td class="memname">void* _cbor_realloc_multiple </td> 140 <td>(</td> 141 <td class="paramtype">void * </td> 142 <td class="paramname"><em>pointer</em>, </td> 143 </tr> 144 <tr> 145 <td class="paramkey"></td> 146 <td></td> 147 <td class="paramtype">size_t </td> 148 <td class="paramname"><em>item_size</em>, </td> 149 </tr> 150 <tr> 151 <td class="paramkey"></td> 152 <td></td> 153 <td class="paramtype">size_t </td> 154 <td class="paramname"><em>item_count</em> </td> 155 </tr> 156 <tr> 157 <td></td> 158 <td>)</td> 159 <td></td><td></td> 160 </tr> 161 </table> 162</div><div class="memdoc"> 163 164<p>Overflow-proof contiguous array reallocation. </p> 165<p>This implements the OpenBSD <code>reallocarray</code> functionality.</p> 166<dl class="params"><dt>Parameters</dt><dd> 167 <table class="params"> 168 <tr><td class="paramname">pointer</td><td></td></tr> 169 <tr><td class="paramname">item_size</td><td></td></tr> 170 <tr><td class="paramname">item_count</td><td></td></tr> 171 </table> 172 </dd> 173</dl> 174<dl class="section return"><dt>Returns</dt><dd>Realloc'd of item_size * item_count bytes, or NULL if the total size overflows size_t or the underlying allocator failed </dd></dl> 175 176<p>Definition at line <a class="el" href="memory__utils_8c_source.html#l00039">39</a> of file <a class="el" href="memory__utils_8c_source.html">memory_utils.c</a>.</p> 177 178</div> 179</div> 180<a id="abdee08be3f4cff35a94279fda66c4778"></a> 181<h2 class="memtitle"><span class="permalink"><a href="#abdee08be3f4cff35a94279fda66c4778">§ </a></span>_cbor_safe_to_multiply()</h2> 182 183<div class="memitem"> 184<div class="memproto"> 185 <table class="memname"> 186 <tr> 187 <td class="memname">bool _cbor_safe_to_multiply </td> 188 <td>(</td> 189 <td class="paramtype">size_t </td> 190 <td class="paramname"><em>a</em>, </td> 191 </tr> 192 <tr> 193 <td class="paramkey"></td> 194 <td></td> 195 <td class="paramtype">size_t </td> 196 <td class="paramname"><em>b</em> </td> 197 </tr> 198 <tr> 199 <td></td> 200 <td>)</td> 201 <td></td><td></td> 202 </tr> 203 </table> 204</div><div class="memdoc"> 205 206<p>Can a and b be multiplied without overflowing size_t? </p> 207 208<p>Definition at line <a class="el" href="memory__utils_8c_source.html#l00025">25</a> of file <a class="el" href="memory__utils_8c_source.html">memory_utils.c</a>.</p> 209 210</div> 211</div> 212</div><!-- contents --> 213<!-- start footer part --> 214<hr class="footer"/><address class="footer"><small> 215Generated on Mon Feb 6 2017 00:26:19 for libcbor by  <a href="http://www.doxygen.org/index.html"> 216<img class="footer" src="doxygen.png" alt="doxygen"/> 217</a> 1.8.12 218</small></address> 219</body> 220</html> 221
