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.c 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.c File Reference</div> </div> 72</div><!--header--> 73<div class="contents"> 74<div class="textblock"><code>#include "<a class="el" href="memory__utils_8h_source.html">memory_utils.h</a>"</code><br /> 75<code>#include "<a class="el" href="common_8h_source.html">cbor/common.h</a>"</code><br /> 76</div> 77<p><a href="memory__utils_8c_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:ab45e9067ef782bb27cf846dc94eb4669"><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="memory__utils_8c.html#ab45e9067ef782bb27cf846dc94eb4669">_cbor_highest_bit</a> (size_t number)</td></tr> 82<tr class="memdesc:ab45e9067ef782bb27cf846dc94eb4669"><td class="mdescLeft"> </td><td class="mdescRight">Highest on bit position. <a href="#ab45e9067ef782bb27cf846dc94eb4669">More...</a><br /></td></tr> 83<tr class="separator:ab45e9067ef782bb27cf846dc94eb4669"><td class="memSeparator" colspan="2"> </td></tr> 84<tr class="memitem:abdee08be3f4cff35a94279fda66c4778"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="memory__utils_8c.html#abdee08be3f4cff35a94279fda66c4778">_cbor_safe_to_multiply</a> (size_t a, size_t b)</td></tr> 85<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> 86<tr class="separator:abdee08be3f4cff35a94279fda66c4778"><td class="memSeparator" colspan="2"> </td></tr> 87<tr class="memitem:a7bfbe0ac179b30f38bfeb9fe432ad4ec"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="memory__utils_8c.html#a7bfbe0ac179b30f38bfeb9fe432ad4ec">_cbor_alloc_multiple</a> (size_t item_size, size_t item_count)</td></tr> 88<tr class="memdesc:a7bfbe0ac179b30f38bfeb9fe432ad4ec"><td class="mdescLeft"> </td><td class="mdescRight">Overflow-proof contiguous array allocation. <a href="#a7bfbe0ac179b30f38bfeb9fe432ad4ec">More...</a><br /></td></tr> 89<tr class="separator:a7bfbe0ac179b30f38bfeb9fe432ad4ec"><td class="memSeparator" colspan="2"> </td></tr> 90<tr class="memitem:afd7a22ccd3b44d6ff668e14c3a006e40"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="memory__utils_8c.html#afd7a22ccd3b44d6ff668e14c3a006e40">_cbor_realloc_multiple</a> (void *pointer, size_t item_size, size_t item_count)</td></tr> 91<tr class="memdesc:afd7a22ccd3b44d6ff668e14c3a006e40"><td class="mdescLeft"> </td><td class="mdescRight">Overflow-proof contiguous array reallocation. <a href="#afd7a22ccd3b44d6ff668e14c3a006e40">More...</a><br /></td></tr> 92<tr class="separator:afd7a22ccd3b44d6ff668e14c3a006e40"><td class="memSeparator" colspan="2"> </td></tr> 93</table> 94<h2 class="groupheader">Function Documentation</h2> 95<a id="a7bfbe0ac179b30f38bfeb9fe432ad4ec"></a> 96<h2 class="memtitle"><span class="permalink"><a href="#a7bfbe0ac179b30f38bfeb9fe432ad4ec">§ </a></span>_cbor_alloc_multiple()</h2> 97 98<div class="memitem"> 99<div class="memproto"> 100 <table class="memname"> 101 <tr> 102 <td class="memname">void* _cbor_alloc_multiple </td> 103 <td>(</td> 104 <td class="paramtype">size_t </td> 105 <td class="paramname"><em>item_size</em>, </td> 106 </tr> 107 <tr> 108 <td class="paramkey"></td> 109 <td></td> 110 <td class="paramtype">size_t </td> 111 <td class="paramname"><em>item_count</em> </td> 112 </tr> 113 <tr> 114 <td></td> 115 <td>)</td> 116 <td></td><td></td> 117 </tr> 118 </table> 119</div><div class="memdoc"> 120 121<p>Overflow-proof contiguous array allocation. </p> 122<dl class="params"><dt>Parameters</dt><dd> 123 <table class="params"> 124 <tr><td class="paramname">item_size</td><td></td></tr> 125 <tr><td class="paramname">item_count</td><td></td></tr> 126 </table> 127 </dd> 128</dl> 129<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> 130 131<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> 132 133</div> 134</div> 135<a id="ab45e9067ef782bb27cf846dc94eb4669"></a> 136<h2 class="memtitle"><span class="permalink"><a href="#ab45e9067ef782bb27cf846dc94eb4669">§ </a></span>_cbor_highest_bit()</h2> 137 138<div class="memitem"> 139<div class="memproto"> 140 <table class="memname"> 141 <tr> 142 <td class="memname">size_t _cbor_highest_bit </td> 143 <td>(</td> 144 <td class="paramtype">size_t </td> 145 <td class="paramname"><em>number</em></td><td>)</td> 146 <td></td> 147 </tr> 148 </table> 149</div><div class="memdoc"> 150 151<p>Highest on bit position. </p> 152 153<p>Definition at line <a class="el" href="memory__utils_8c_source.html#l00014">14</a> of file <a class="el" href="memory__utils_8c_source.html">memory_utils.c</a>.</p> 154 155</div> 156</div> 157<a id="afd7a22ccd3b44d6ff668e14c3a006e40"></a> 158<h2 class="memtitle"><span class="permalink"><a href="#afd7a22ccd3b44d6ff668e14c3a006e40">§ </a></span>_cbor_realloc_multiple()</h2> 159 160<div class="memitem"> 161<div class="memproto"> 162 <table class="memname"> 163 <tr> 164 <td class="memname">void* _cbor_realloc_multiple </td> 165 <td>(</td> 166 <td class="paramtype">void * </td> 167 <td class="paramname"><em>pointer</em>, </td> 168 </tr> 169 <tr> 170 <td class="paramkey"></td> 171 <td></td> 172 <td class="paramtype">size_t </td> 173 <td class="paramname"><em>item_size</em>, </td> 174 </tr> 175 <tr> 176 <td class="paramkey"></td> 177 <td></td> 178 <td class="paramtype">size_t </td> 179 <td class="paramname"><em>item_count</em> </td> 180 </tr> 181 <tr> 182 <td></td> 183 <td>)</td> 184 <td></td><td></td> 185 </tr> 186 </table> 187</div><div class="memdoc"> 188 189<p>Overflow-proof contiguous array reallocation. </p> 190<p>This implements the OpenBSD <code>reallocarray</code> functionality.</p> 191<dl class="params"><dt>Parameters</dt><dd> 192 <table class="params"> 193 <tr><td class="paramname">pointer</td><td></td></tr> 194 <tr><td class="paramname">item_size</td><td></td></tr> 195 <tr><td class="paramname">item_count</td><td></td></tr> 196 </table> 197 </dd> 198</dl> 199<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> 200 201<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> 202 203</div> 204</div> 205<a id="abdee08be3f4cff35a94279fda66c4778"></a> 206<h2 class="memtitle"><span class="permalink"><a href="#abdee08be3f4cff35a94279fda66c4778">§ </a></span>_cbor_safe_to_multiply()</h2> 207 208<div class="memitem"> 209<div class="memproto"> 210 <table class="memname"> 211 <tr> 212 <td class="memname">bool _cbor_safe_to_multiply </td> 213 <td>(</td> 214 <td class="paramtype">size_t </td> 215 <td class="paramname"><em>a</em>, </td> 216 </tr> 217 <tr> 218 <td class="paramkey"></td> 219 <td></td> 220 <td class="paramtype">size_t </td> 221 <td class="paramname"><em>b</em> </td> 222 </tr> 223 <tr> 224 <td></td> 225 <td>)</td> 226 <td></td><td></td> 227 </tr> 228 </table> 229</div><div class="memdoc"> 230 231<p>Can a and b be multiplied without overflowing size_t? </p> 232 233<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> 234 235</div> 236</div> 237</div><!-- contents --> 238<!-- start footer part --> 239<hr class="footer"/><address class="footer"><small> 240Generated on Mon Feb 6 2017 00:26:19 for libcbor by  <a href="http://www.doxygen.org/index.html"> 241<img class="footer" src="doxygen.png" alt="doxygen"/> 242</a> 1.8.12 243</small></address> 244</body> 245</html> 246
