<!doctype html>
<html>
<head>
<title>../../OgreMain/src/OgreAlignedAllocator.cpp</title>
<style type="text/css">
body { color:#000000; background-color:#ffffff }
body { font-family:Helvetica, sans-serif; font-size:10pt }
h1 { font-size:14pt }
.code { border-collapse:collapse; width:100%; }
.code { font-family: "Monospace", monospace; font-size:10pt }
.code { line-height: 1.2em }
.comment { color: green; font-style: oblique }
.keyword { color: blue }
.string_literal { color: red }
.directive { color: darkmagenta }
.expansion { display: none; }
.macro:hover .expansion { display: block; border: 2px solid #FF0000; padding: 2px; background-color:#FFF0F0; font-weight: normal; -webkit-border-radius:5px; -webkit-box-shadow:1px 1px 7px #000; position: absolute; top: -1em; left:10em; z-index: 1 }
.macro { color: darkmagenta; background-color:LemonChiffon; position: relative }
.num { width:2.5em; padding-right:2ex; background-color:#eeeeee }
.num { text-align:right; font-size:8pt }
.num { color:#444444 }
.line { padding-left: 1ex; border-left: 3px solid #ccc }
.line { white-space: pre }
.msg { -webkit-box-shadow:1px 1px 7px #000 }
.msg { -webkit-border-radius:5px }
.msg { font-family:Helvetica, sans-serif; font-size:8pt }
.msg { float:left }
.msg { padding:0.25em 1ex 0.25em 1ex }
.msg { margin-top:10px; margin-bottom:10px }
.msg { font-weight:bold }
.msg { max-width:60em; word-wrap: break-word; white-space: pre-wrap }
.msgT { padding:0x; spacing:0x }
.msgEvent { background-color:#fff8b4; color:#000000 }
.msgControl { background-color:#bbbbbb; color:#000000 }
.mrange { background-color:#dfddf3 }
.mrange { border-bottom:1px solid #6F9DBE }
.PathIndex { font-weight: bold; padding:0px 5px; margin-right:5px; }
.PathIndex { -webkit-border-radius:8px }
.PathIndexEvent { background-color:#bfba87 }
.PathIndexControl { background-color:#8c8c8c }
.PathNav a { text-decoration:none; font-size: larger }
.CodeInsertionHint { font-weight: bold; background-color: #10dd10 }
.CodeRemovalHint { background-color:#de1010 }
.CodeRemovalHint { border-bottom:1px solid #6F9DBE }
table.simpletable {
padding: 5px;
font-size:12pt;
margin:20px;
border-collapse: collapse; border-spacing: 0px;
}
td.rowname {
text-align:right; font-weight:bold; color:#444444;
padding-right:2ex; }
</style>
</head>
<body>
<!-- BUGDESC Potential leak of memory pointed to by 'p' -->
<!-- BUGTYPE Memory leak -->
<!-- BUGCATEGORY Memory Error -->
<!-- BUGFILE f:\---OGRE\ogre_src_v1-8-1\-Build-\OgreMain/../../OgreMain/src/OgreAlignedAllocator.cpp -->
<!-- FILENAME OgreAlignedAllocator.cpp -->
<!-- FUNCTIONNAME allocate -->
<!-- BUGLINE 61 -->
<!-- BUGCOLUMN 20 -->
<!-- BUGPATHLENGTH 3 -->
<!-- BUGMETAEND -->
<!-- REPORTHEADER -->
<h3>Bug Summary</h3>
<table class="simpletable">
<tr><td class="rowname">File:</td><td>f:\---OGRE\ogre_src_v1-8-1\-Build-\OgreMain/../../OgreMain/src/OgreAlignedAllocator.cpp</td></tr>
<tr><td class="rowname">Location:</td><td><a href="#EndPath">line 61, column 20</a></td></tr>
<tr><td class="rowname">Description:</td><td>Potential leak of memory pointed to by 'p'</td></tr>
</table>
<!-- REPORTSUMMARYEXTRA -->
<h3>Annotated Source Code</h3>
<table class="code">
<tr><td class="num" id="LN1">1</td><td class="line"><span class='comment'>/*</span>
</td></tr>
<tr><td class="num" id="LN2">2</td><td class="line"><span class='comment'>-----------------------------------------------------------------------------</span>
</td></tr>
<tr><td class="num" id="LN3">3</td><td class="line"><span class='comment'>This source file is part of OGRE</span>
</td></tr>
<tr><td class="num" id="LN4">4</td><td class="line"> <span class='comment'>(Object-oriented Graphics Rendering Engine)</span>
</td></tr>
<tr><td class="num" id="LN5">5</td><td class="line"><span class='comment'>For the latest info, see http://www.ogre3d.org/</span>
</td></tr>
<tr><td class="num" id="LN6">6</td><td class="line">
</td></tr>
<tr><td class="num" id="LN7">7</td><td class="line"><span class='comment'>Copyright (c) 2000-2012 Torus Knot Software Ltd</span>
</td></tr>
<tr><td class="num" id="LN8">8</td><td class="line">
</td></tr>
<tr><td class="num" id="LN9">9</td><td class="line"><span class='comment'>Permission is hereby granted, free of charge, to any person obtaining a copy</span>
</td></tr>
<tr><td class="num" id="LN10">10</td><td class="line"><span class='comment'>of this software and associated documentation files (the "Software"), to deal</span>
</td></tr>
<tr><td class="num" id="LN11">11</td><td class="line"><span class='comment'>in the Software without restriction, including without limitation the rights</span>
</td></tr>
<tr><td class="num" id="LN12">12</td><td class="line"><span class='comment'>to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
</td></tr>
<tr><td class="num" id="LN13">13</td><td class="line"><span class='comment'>copies of the Software, and to permit persons to whom the Software is</span>
</td></tr>
<tr><td class="num" id="LN14">14</td><td class="line"><span class='comment'>furnished to do so, subject to the following conditions:</span>
</td></tr>
<tr><td class="num" id="LN15">15</td><td class="line">
</td></tr>
<tr><td class="num" id="LN16">16</td><td class="line"><span class='comment'>The above copyright notice and this permission notice shall be included in</span>
</td></tr>
<tr><td class="num" id="LN17">17</td><td class="line"><span class='comment'>all copies or substantial portions of the Software.</span>
</td></tr>
<tr><td class="num" id="LN18">18</td><td class="line">
</td></tr>
<tr><td class="num" id="LN19">19</td><td class="line"><span class='comment'>THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
</td></tr>
<tr><td class="num" id="LN20">20</td><td class="line"><span class='comment'>IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
</td></tr>
<tr><td class="num" id="LN21">21</td><td class="line"><span class='comment'>FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
</td></tr>
<tr><td class="num" id="LN22">22</td><td class="line"><span class='comment'>AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
</td></tr>
<tr><td class="num" id="LN23">23</td><td class="line"><span class='comment'>LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span>
</td></tr>
<tr><td class="num" id="LN24">24</td><td class="line"><span class='comment'>OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN</span>
</td></tr>
<tr><td class="num" id="LN25">25</td><td class="line"><span class='comment'>THE SOFTWARE.</span>
</td></tr>
<tr><td class="num" id="LN26">26</td><td class="line"><span class='comment'>-----------------------------------------------------------------------------</span>
</td></tr>
<tr><td class="num" id="LN27">27</td><td class="line"><span class='comment'>*/</span>
</td></tr>
<tr><td class="num" id="LN28">28</td><td class="line"><span class='directive'>#include "OgreStableHeaders.h"</span>
</td></tr>
<tr><td class="num" id="LN29">29</td><td class="line">
</td></tr>
<tr><td class="num" id="LN30">30</td><td class="line"><span class='directive'>#include "OgrePrerequisites.h"</span>
</td></tr>
<tr><td class="num" id="LN31">31</td><td class="line"><span class='directive'>#include "OgreAlignedAllocator.h"</span>
</td></tr>
<tr><td class="num" id="LN32">32</td><td class="line">
</td></tr>
<tr><td class="num" id="LN33">33</td><td class="line"><span class='directive'>#include "OgrePlatformInformation.h"</span>
</td></tr>
<tr><td class="num" id="LN34">34</td><td class="line"><span class='directive'>#include "OgreBitwise.h"</span>
</td></tr>
<tr><td class="num" id="LN35">35</td><td class="line">
</td></tr>
<tr><td class="num" id="LN36">36</td><td class="line"><span class='comment'>/**</span>
</td></tr>
<tr><td class="num" id="LN37">37</td><td class="line"><span class='comment'>*</span>
</td></tr>
<tr><td class="num" id="LN38">38</td><td class="line"><span class='comment'>* |___2___|3|_________5__________|__6__|</span>
</td></tr>
<tr><td class="num" id="LN39">39</td><td class="line"><span class='comment'>* ^ ^</span>
</td></tr>
<tr><td class="num" id="LN40">40</td><td class="line"><span class='comment'>* 1 4</span>
</td></tr>
<tr><td class="num" id="LN41">41</td><td class="line"><span class='comment'>*</span>
</td></tr>
<tr><td class="num" id="LN42">42</td><td class="line"><span class='comment'>* 1 -> Pointer to start of the block allocated by new.</span>
</td></tr>
<tr><td class="num" id="LN43">43</td><td class="line"><span class='comment'>* 2 -> Gap used to get 4 aligned on given alignment</span>
</td></tr>
<tr><td class="num" id="LN44">44</td><td class="line"><span class='comment'>* 3 -> Byte offset between 1 and 4</span>
</td></tr>
<tr><td class="num" id="LN45">45</td><td class="line"><span class='comment'>* 4 -> Pointer to the start of data block.</span>
</td></tr>
<tr><td class="num" id="LN46">46</td><td class="line"><span class='comment'>* 5 -> Data block.</span>
</td></tr>
<tr><td class="num" id="LN47">47</td><td class="line"><span class='comment'>* 6 -> Wasted memory at rear of data block.</span>
</td></tr>
<tr><td class="num" id="LN48">48</td><td class="line"><span class='comment'>*/</span>
</td></tr>
<tr><td class="num" id="LN49">49</td><td class="line">
</td></tr>
<tr><td class="num" id="LN50">50</td><td class="line"><span class='keyword'>namespace</span> Ogre {
</td></tr>
<tr><td class="num" id="LN51">51</td><td class="line">
</td></tr>
<tr><td class="num" id="LN52">52</td><td class="line"> <span class='comment'>//---------------------------------------------------------------------</span>
</td></tr>
<tr><td class="num" id="LN53">53</td><td class="line"> <span class='keyword'>void</span>* AlignedMemory::allocate(size_t size, size_t alignment)
</td></tr>
<tr><td class="num" id="LN54">54</td><td class="line"> {
</td></tr>
<tr><td class="num" id="LN55">55</td><td class="line"> <span class='macro'>assert(0 < alignment && alignment <= 128 && Bitwise::isPO2(alignment))<span class='expansion'>((void)0)</span></span>;
</td></tr>
<tr><td class="num" id="LN56">56</td><td class="line">
</td></tr>
<tr><td class="num" id="LN57">57</td><td class="line"> <span class='keyword'>unsigned</span> <span class='keyword'>char</span>* p = <span class="mrange"><span class='keyword'>new</span> <span class='keyword'>unsigned</span> <span class='keyword'>char</span>[size + alignment]</span>;
</td></tr>
<tr><td class="num"></td><td class="line"><div id="Path2" class="msg msgEvent" style="margin-left:28ex"><table class="msgT"><tr><td valign="top"><div class="PathIndex PathIndexEvent">2</div></td><td><div class="PathNav"><a href="#Path1" title="Previous event (1)">←</a></div></td></td><td>Memory is allocated</td><td><div class="PathNav"><a href="#EndPath" title="Next event (3)">→</a></div></td></tr></table></div></td></tr>
<tr><td class="num" id="LN58">58</td><td class="line"> size_t offset = alignment - (size_t(p) & (alignment-1));
</td></tr>
<tr><td class="num" id="LN59">59</td><td class="line">
</td></tr>
<tr><td class="num" id="LN60">60</td><td class="line"> <span class='keyword'>unsigned</span> <span class='keyword'>char</span>* result = p + offset;
</td></tr>
<tr><td class="num" id="LN61">61</td><td class="line"> result[-1] = (<span class='keyword'>unsigned</span> <span class='keyword'>char</span>)offset;
</td></tr>
<tr><td class="num"></td><td class="line"><div id="EndPath" class="msg msgEvent" style="margin-left:20ex"><table class="msgT"><tr><td valign="top"><div class="PathIndex PathIndexEvent">3</div></td><td><div class="PathNav"><a href="#Path2" title="Previous event (2)">←</a></div></td></td><td>Potential leak of memory pointed to by 'p'</td></tr></table></div></td></tr>
<tr><td class="num" id="LN62">62</td><td class="line">
</td></tr>
<tr><td class="num" id="LN63">63</td><td class="line"> <span class='keyword'>return</span> result;
</td></tr>
<tr><td class="num" id="LN64">64</td><td class="line"> }
</td></tr>
<tr><td class="num" id="LN65">65</td><td class="line"> <span class='comment'>//---------------------------------------------------------------------</span>
</td></tr>
<tr><td class="num" id="LN66">66</td><td class="line"> <span class='keyword'>void</span>* AlignedMemory::allocate(size_t size)
</td></tr>
<tr><td class="num" id="LN67">67</td><td class="line"> {
</td></tr>
<tr><td class="num" id="LN68">68</td><td class="line"> <span class='keyword'>return</span> <span class="mrange">allocate(size, <span class='macro'>OGRE_SIMD_ALIGNMENT<span class='expansion'>16</span></span>)</span>;
</td></tr>
<tr><td class="num"></td><td class="line"><div id="Path1" class="msg msgEvent" style="margin-left:16ex"><table class="msgT"><tr><td valign="top"><div class="PathIndex PathIndexEvent">1</div></td><td>Calling 'AlignedMemory::allocate'</td><td><div class="PathNav"><a href="#Path2" title="Next event (2)">→</a></div></td></tr></table></div></td></tr>
<tr><td class="num" id="LN69">69</td><td class="line"> }
</td></tr>
<tr><td class="num" id="LN70">70</td><td class="line"> <span class='comment'>//---------------------------------------------------------------------</span>
</td></tr>
<tr><td class="num" id="LN71">71</td><td class="line"> <span class='keyword'>void</span> AlignedMemory::deallocate(<span class='keyword'>void</span>* p)
</td></tr>
<tr><td class="num" id="LN72">72</td><td class="line"> {
</td></tr>
<tr><td class="num" id="LN73">73</td><td class="line"> <span class='keyword'>if</span> (p)
</td></tr>
<tr><td class="num" id="LN74">74</td><td class="line"> {
</td></tr>
<tr><td class="num" id="LN75">75</td><td class="line"> <span class='keyword'>unsigned</span> <span class='keyword'>char</span>* mem = (<span class='keyword'>unsigned</span> <span class='keyword'>char</span>*)p;
</td></tr>
<tr><td class="num" id="LN76">76</td><td class="line"> mem = mem - mem[-1];
</td></tr>
<tr><td class="num" id="LN77">77</td><td class="line"> <span class='keyword'>delete</span> [] mem;
</td></tr>
<tr><td class="num" id="LN78">78</td><td class="line"> }
</td></tr>
<tr><td class="num" id="LN79">79</td><td class="line"> }
</td></tr>
<tr><td class="num" id="LN80">80</td><td class="line">
</td></tr>
<tr><td class="num" id="LN81">81</td><td class="line">}
</td></tr>
</table></body></html>