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<div class="title">memory_buffer_alloc.c</div> </div>
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<a href="memory__buffer__alloc_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Buffer-based memory allocator</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (C) 2006-2014, Brainspark B.V.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This file is part of PolarSSL (http://www.polarssl.org)</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * You should have received a copy of the GNU General Public License along</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#if !defined(POLARSSL_CONFIG_FILE)</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="config_8h.html">polarssl/config.h</a>"</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"></span><span class="preprocessor">#include POLARSSL_CONFIG_FILE</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C)</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="memory__buffer__alloc_8h.html">polarssl/memory_buffer_alloc.h</a>"</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <string.h></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span><span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span><span class="preprocessor">#include <execinfo.h></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#if defined(POLARSSL_THREADING_C)</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="threading_8h.html">polarssl/threading.h</a>"</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#if defined(POLARSSL_PLATFORM_C)</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="platform_8h.html">polarssl/platform.h</a>"</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor"></span><span class="preprocessor">#define polarssl_fprintf fprintf</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">/* Implementation that should never be optimized out by the compiler */</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">static</span> <span class="keywordtype">void</span> polarssl_zeroize( <span class="keywordtype">void</span> *v, <span class="keywordtype">size_t</span> n ) {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p = v; <span class="keywordflow">while</span>( n-- ) *p++ = 0;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor">#define MAGIC1 0xFF00AA55</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor"></span><span class="preprocessor">#define MAGIC2 0xEE119966</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor"></span><span class="preprocessor">#define MAX_BT 20</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>_memory_header memory_header;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">struct </span>_memory_header</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">size_t</span> magic1;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">size_t</span> size;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">size_t</span> alloc;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  memory_header *prev;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  memory_header *next;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  memory_header *prev_free;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  memory_header *next_free;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor"></span> <span class="keywordtype">char</span> **trace;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">size_t</span> trace_count;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor"></span> <span class="keywordtype">size_t</span> magic2;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> };</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">typedef</span> <span class="keyword">struct</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">size_t</span> len;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  memory_header *first;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  memory_header *first_free;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordtype">size_t</span> current_alloc_size;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">int</span> verify;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor"></span> <span class="keywordtype">size_t</span> malloc_count;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">size_t</span> free_count;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">size_t</span> total_used;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">size_t</span> maximum_used;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordtype">size_t</span> header_count;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">size_t</span> maximum_header_count;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(POLARSSL_THREADING_C)</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="preprocessor"></span> threading_mutex_t mutex;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> buffer_alloc_ctx;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">static</span> buffer_alloc_ctx heap;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span> debug_header( memory_header *hdr )</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="preprocessor"></span> <span class="keywordtype">size_t</span> i;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"HDR: PTR(%10u), PREV(%10u), NEXT(%10u), "</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="stringliteral">"ALLOC(%u), SIZE(%10u)\n"</span>,</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  (<span class="keywordtype">size_t</span>) hdr, (<span class="keywordtype">size_t</span>) hdr->prev, (<span class="keywordtype">size_t</span>) hdr->next,</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  hdr->alloc, hdr->size );</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">" FPREV(%10u), FNEXT(%10u)\n"</span>,</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  (<span class="keywordtype">size_t</span>) hdr->prev_free, (<span class="keywordtype">size_t</span>) hdr->next_free );</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"TRACE: \n"</span> );</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">for</span>( i = 0; i < hdr->trace_count; i++ )</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"%s\n"</span>, hdr->trace[i] );</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"\n"</span> );</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">static</span> <span class="keywordtype">void</span> debug_chain()</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> {</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  memory_header *cur = heap.first;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"\nBlock list\n"</span> );</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">while</span>( cur != NULL )</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  debug_header( cur );</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  cur = cur->next;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  }</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"Free list\n"</span> );</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  cur = heap.first_free;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">while</span>( cur != NULL )</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  {</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  debug_header( cur );</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  cur = cur->next_free;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_MEMORY_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">static</span> <span class="keywordtype">int</span> verify_header( memory_header *hdr )</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">if</span>( hdr->magic1 != MAGIC1 )</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: MAGIC1 mismatch\n"</span> );</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span>( hdr->magic2 != MAGIC2 )</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  {</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: MAGIC2 mismatch\n"</span> );</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">if</span>( hdr->alloc > 1 )</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  {</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: alloc has illegal value\n"</span> );</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span>( hdr->prev != NULL && hdr->prev == hdr->next )</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  {</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: prev == next\n"</span> );</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">if</span>( hdr->prev_free != NULL && hdr->prev_free == hdr->next_free )</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  {</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: prev_free == next_free\n"</span> );</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  }</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> }</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">static</span> <span class="keywordtype">int</span> verify_chain()</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  memory_header *prv = heap.first, *cur = heap.first->next;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">if</span>( verify_header( heap.first ) != 0 )</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: verification of first header "</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="stringliteral">"failed\n"</span> );</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  }</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span>( heap.first->prev != NULL )</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: verification failed: "</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="stringliteral">"first->prev != NULL\n"</span> );</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">while</span>( cur != NULL )</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  {</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span>( verify_header( cur ) != 0 )</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  {</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: verification of header "</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="stringliteral">"failed\n"</span> );</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">if</span>( cur->prev != prv )</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: verification failed: "</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="stringliteral">"cur->prev != prv\n"</span> );</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="preprocessor"></span> <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  prv = cur;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  cur = cur->next;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> }</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="keyword">static</span> <span class="keywordtype">void</span> *buffer_alloc_malloc( <span class="keywordtype">size_t</span> len )</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> {</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  memory_header *<span class="keyword">new</span>, *cur = heap.first_free;</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="preprocessor"></span> <span class="keywordtype">void</span> *trace_buffer[MAX_BT];</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordtype">size_t</span> trace_cnt;</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">if</span>( heap.buf == NULL || heap.first == NULL )</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">return</span>( NULL );</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> </div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">if</span>( len % <a class="code" href="memory__buffer__alloc_8h.html#a3207cb8b170cc1fe695783d1809c32a4">POLARSSL_MEMORY_ALIGN_MULTIPLE</a> )</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  {</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  len -= len % <a class="code" href="memory__buffer__alloc_8h.html#a3207cb8b170cc1fe695783d1809c32a4">POLARSSL_MEMORY_ALIGN_MULTIPLE</a>;</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  len += <a class="code" href="memory__buffer__alloc_8h.html#a3207cb8b170cc1fe695783d1809c32a4">POLARSSL_MEMORY_ALIGN_MULTIPLE</a>;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  }</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="comment">// Find block that fits</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">while</span>( cur != NULL )</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  {</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">if</span>( cur->size >= len )</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  cur = cur->next_free;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  }</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">if</span>( cur == NULL )</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">return</span>( NULL );</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">if</span>( cur->alloc != 0 )</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  {</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: block in free_list but allocated "</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="stringliteral">"data\n"</span> );</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="preprocessor"></span> exit( 1 );</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  }</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="preprocessor"></span> heap.malloc_count++;</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="comment">// Found location, split block if > memory_header + 4 room left</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordflow">if</span>( cur->size - len < <span class="keyword">sizeof</span>(memory_header) +</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  POLARSSL_MEMORY_ALIGN_MULTIPLE )</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  {</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  cur->alloc = 1;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="comment">// Remove from free_list</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordflow">if</span>( cur->prev_free != NULL )</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  cur->prev_free->next_free = cur->next_free;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  heap.first_free = cur->next_free;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> </div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">if</span>( cur->next_free != NULL )</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  cur->next_free->prev_free = cur->prev_free;</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  cur->prev_free = NULL;</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  cur->next_free = NULL;</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="preprocessor"></span> heap.total_used += cur->size;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">if</span>( heap.total_used > heap.maximum_used )</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  heap.maximum_used = heap.total_used;</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="preprocessor"></span> trace_cnt = backtrace( trace_buffer, MAX_BT );</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  cur->trace = backtrace_symbols( trace_buffer, trace_cnt );</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  cur->trace_count = trace_cnt;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">if</span>( ( heap.verify & <a class="code" href="memory__buffer__alloc_8h.html#a129f05dbba09d85d2b880faeca2a6eff">MEMORY_VERIFY_ALLOC</a> ) && verify_chain() != 0 )</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  exit( 1 );</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> </div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">return</span>( ( (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) cur ) + <span class="keyword">sizeof</span>(memory_header) );</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  }</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> </div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  p = ( (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) cur ) + <span class="keyword">sizeof</span>(memory_header) + len;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keyword">new</span> = (memory_header *) p;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">new</span>->size = cur->size - len - <span class="keyword">sizeof</span>(memory_header);</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keyword">new</span>->alloc = 0;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keyword">new</span>->prev = cur;</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keyword">new</span>->next = cur->next;</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="preprocessor"></span> <span class="keyword">new</span>->trace = NULL;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keyword">new</span>->trace_count = 0;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="preprocessor"></span> <span class="keyword">new</span>->magic1 = MAGIC1;</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keyword">new</span>->magic2 = MAGIC2;</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordflow">if</span>( new->next != NULL )</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keyword">new</span>->next->prev = <span class="keyword">new</span>;</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> </div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="comment">// Replace cur with new in free_list</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keyword">new</span>->prev_free = cur->prev_free;</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keyword">new</span>->next_free = cur->next_free;</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordflow">if</span>( new->prev_free != NULL )</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keyword">new</span>->prev_free->next_free = <span class="keyword">new</span>;</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  heap.first_free = <span class="keyword">new</span>;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> </div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">if</span>( new->next_free != NULL )</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keyword">new</span>->next_free->prev_free = <span class="keyword">new</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  cur->alloc = 1;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  cur->size = len;</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  cur->next = <span class="keyword">new</span>;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  cur->prev_free = NULL;</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  cur->next_free = NULL;</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="preprocessor"></span> heap.header_count++;</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordflow">if</span>( heap.header_count > heap.maximum_header_count )</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  heap.maximum_header_count = heap.header_count;</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  heap.total_used += cur->size;</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordflow">if</span>( heap.total_used > heap.maximum_used )</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  heap.maximum_used = heap.total_used;</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="preprocessor"></span><span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="preprocessor"></span> trace_cnt = backtrace( trace_buffer, MAX_BT );</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  cur->trace = backtrace_symbols( trace_buffer, trace_cnt );</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  cur->trace_count = trace_cnt;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span>( ( heap.verify & <a class="code" href="memory__buffer__alloc_8h.html#a129f05dbba09d85d2b880faeca2a6eff">MEMORY_VERIFY_ALLOC</a> ) && verify_chain() != 0 )</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  exit( 1 );</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keywordflow">return</span>( ( (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) cur ) + <span class="keyword">sizeof</span>(memory_header) );</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> }</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> </div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> <span class="keyword">static</span> <span class="keywordtype">void</span> buffer_alloc_free( <span class="keywordtype">void</span> *ptr )</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> {</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  memory_header *hdr, *old = NULL;</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) ptr;</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span> </div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">if</span>( ptr == NULL || heap.buf == NULL || heap.first == NULL )</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span> </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">if</span>( p < heap.buf || p > heap.buf + heap.len )</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  {</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: polarssl_free() outside of managed "</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="stringliteral">"space\n"</span> );</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="preprocessor"></span> exit( 1 );</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  }</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> </div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  p -= <span class="keyword">sizeof</span>(memory_header);</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  hdr = (memory_header *) p;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">if</span>( verify_header( hdr ) != 0 )</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  exit( 1 );</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> </div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">if</span>( hdr->alloc != 1 )</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  {</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="preprocessor"></span> <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"FATAL: polarssl_free() on unallocated "</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="stringliteral">"data\n"</span> );</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="preprocessor"></span> exit( 1 );</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  }</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> </div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  hdr->alloc = 0;</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> </div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> <span class="preprocessor"></span> heap.free_count++;</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  heap.total_used -= hdr->size;</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="comment">// Regroup with block before</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">if</span>( hdr->prev != NULL && hdr->prev->alloc == 0 )</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  {</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="preprocessor"></span> heap.header_count--;</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="preprocessor"></span> hdr->prev->size += <span class="keyword">sizeof</span>(memory_header) + hdr->size;</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  hdr->prev->next = hdr->next;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  old = hdr;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  hdr = hdr->prev;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> </div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="keywordflow">if</span>( hdr->next != NULL )</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  hdr->next->prev = hdr;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> </div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="preprocessor"></span> free( old->trace );</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="preprocessor"></span> memset( old, 0, <span class="keyword">sizeof</span>(memory_header) );</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> </div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="comment">// Regroup with block after</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">if</span>( hdr->next != NULL && hdr->next->alloc == 0 )</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  {</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> <span class="preprocessor"></span> heap.header_count--;</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="preprocessor"></span> hdr->size += <span class="keyword">sizeof</span>(memory_header) + hdr->next->size;</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  old = hdr->next;</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  hdr->next = hdr->next->next;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> </div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="keywordflow">if</span>( hdr->prev_free != NULL || hdr->next_free != NULL )</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  {</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="keywordflow">if</span>( hdr->prev_free != NULL )</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  hdr->prev_free->next_free = hdr->next_free;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  heap.first_free = hdr->next_free;</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> </div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">if</span>( hdr->next_free != NULL )</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  hdr->next_free->prev_free = hdr->prev_free;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  }</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span> </div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  hdr->prev_free = old->prev_free;</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  hdr->next_free = old->next_free;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span> </div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keywordflow">if</span>( hdr->prev_free != NULL )</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  hdr->prev_free->next_free = hdr;</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  heap.first_free = hdr;</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span> </div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">if</span>( hdr->next_free != NULL )</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  hdr->next_free->prev_free = hdr;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span> </div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordflow">if</span>( hdr->next != NULL )</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  hdr->next->prev = hdr;</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span> </div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span> <span class="preprocessor"></span> free( old->trace );</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <span class="preprocessor"></span> memset( old, 0, <span class="keyword">sizeof</span>(memory_header) );</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  }</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> </div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">// Prepend to free_list if we have not merged</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="comment">// (Does not have to stay in same order as prev / next list)</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordflow">if</span>( old == NULL )</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  {</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  hdr->next_free = heap.first_free;</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  heap.first_free->prev_free = hdr;</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  heap.first_free = hdr;</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  }</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> </div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_BACKTRACE)</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> <span class="preprocessor"></span> hdr->trace = NULL;</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  hdr->trace_count = 0;</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keywordflow">if</span>( ( heap.verify & <a class="code" href="memory__buffer__alloc_8h.html#adc781138868927caa03bfe4b58c4e80d">MEMORY_VERIFY_FREE</a> ) && verify_chain() != 0 )</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  exit( 1 );</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span> }</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> </div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span> <span class="keywordtype">void</span> <a class="code" href="memory__buffer__alloc_8h.html#a0cfecc13142981464f1f746863542a86">memory_buffer_set_verify</a>( <span class="keywordtype">int</span> verify )</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> {</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  heap.verify = verify;</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> }</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span> </div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span> <span class="keywordtype">int</span> <a class="code" href="memory__buffer__alloc_8h.html#a9bf18c3768a4c35d6df53bc781b18d1a">memory_buffer_alloc_verify</a>()</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> {</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordflow">return</span> verify_chain();</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> }</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> </div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="preprocessor">#if defined(POLARSSL_MEMORY_DEBUG)</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="preprocessor"></span><span class="keywordtype">void</span> memory_buffer_alloc_status()</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> {</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr,</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="stringliteral">"Current use: %u blocks / %u bytes, max: %u blocks / "</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="stringliteral">"%u bytes (total %u bytes), malloc / free: %u / %u\n"</span>,</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  heap.header_count, heap.total_used,</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  heap.maximum_header_count, heap.maximum_used,</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  heap.maximum_header_count * <span class="keyword">sizeof</span>( memory_header )</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  + heap.maximum_used,</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  heap.malloc_count, heap.free_count );</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span> </div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="keywordflow">if</span>( heap.first->next == NULL )</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"All memory de-allocated in stack buffer\n"</span> );</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  {</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <a class="code" href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a>( stderr, <span class="stringliteral">"Memory currently allocated:\n"</span> );</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  debug_chain();</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  }</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> }</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_MEMORY_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> <span class="preprocessor">#if defined(POLARSSL_THREADING_C)</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span> *buffer_alloc_malloc_mutexed( <span class="keywordtype">size_t</span> len )</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> {</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keywordtype">void</span> *buf;</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <a class="code" href="threading_8h.html#a20d968ec5d48ea16cfab980204e3cb90">polarssl_mutex_lock</a>( &heap.mutex );</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  buf = buffer_alloc_malloc( len );</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <a class="code" href="threading_8h.html#a3f71f2d457fdf4f03268eb731abf3a98">polarssl_mutex_unlock</a>( &heap.mutex );</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="keywordflow">return</span>( buf );</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span> }</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span> </div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> <span class="keyword">static</span> <span class="keywordtype">void</span> buffer_alloc_free_mutexed( <span class="keywordtype">void</span> *ptr )</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span> {</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <a class="code" href="threading_8h.html#a20d968ec5d48ea16cfab980204e3cb90">polarssl_mutex_lock</a>( &heap.mutex );</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  buffer_alloc_free( ptr );</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <a class="code" href="threading_8h.html#a3f71f2d457fdf4f03268eb731abf3a98">polarssl_mutex_unlock</a>( &heap.mutex );</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span> }</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_THREADING_C */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span> <span class="keywordtype">int</span> <a class="code" href="memory__buffer__alloc_8h.html#af2745e4cbfe3339911913ed02dccce91">memory_buffer_alloc_init</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> len )</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span> {</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  memset( &heap, 0, <span class="keyword">sizeof</span>(buffer_alloc_ctx) );</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  memset( buf, 0, len );</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span> </div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span> <span class="preprocessor">#if defined(POLARSSL_THREADING_C)</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span> <span class="preprocessor"></span> <a class="code" href="threading_8h.html#aa6c63dc2e1bfeab14346ded406410603">polarssl_mutex_init</a>( &heap.mutex );</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  platform_set_malloc_free( buffer_alloc_malloc_mutexed,</div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  buffer_alloc_free_mutexed );</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span> <span class="preprocessor"></span> platform_set_malloc_free( buffer_alloc_malloc, buffer_alloc_free );</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keywordflow">if</span>( (<span class="keywordtype">size_t</span>) buf % POLARSSL_MEMORY_ALIGN_MULTIPLE )</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  {</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  buf += POLARSSL_MEMORY_ALIGN_MULTIPLE</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  - (size_t) buf % POLARSSL_MEMORY_ALIGN_MULTIPLE;</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  len -= (size_t) buf % POLARSSL_MEMORY_ALIGN_MULTIPLE;</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  }</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> </div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  heap.buf = buf;</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  heap.len = len;</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span> </div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  heap.first = (memory_header *) buf;</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  heap.first->size = len - <span class="keyword">sizeof</span>(memory_header);</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  heap.first->magic1 = MAGIC1;</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  heap.first->magic2 = MAGIC2;</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  heap.first_free = heap.first;</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span> }</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span> <span class="keywordtype">void</span> <a class="code" href="memory__buffer__alloc_8h.html#a422e29785ed0ae2e31ca9688a0f18267">memory_buffer_alloc_free</a>()</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span> {</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span> <span class="preprocessor">#if defined(POLARSSL_THREADING_C)</span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> <span class="preprocessor"></span> <a class="code" href="threading_8h.html#aaf60b0265d71e36e1429c513e2890a0f">polarssl_mutex_free</a>( &heap.mutex );</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> <span class="preprocessor"></span> polarssl_zeroize( &heap, <span class="keyword">sizeof</span>(buffer_alloc_ctx) );</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span> }</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> </div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_MEMORY_BUFFER_ALLOC_C */</span><span class="preprocessor"></span></div>
<div class="ttc" id="memory__buffer__alloc_8h_html_a3207cb8b170cc1fe695783d1809c32a4"><div class="ttname"><a href="memory__buffer__alloc_8h.html#a3207cb8b170cc1fe695783d1809c32a4">POLARSSL_MEMORY_ALIGN_MULTIPLE</a></div><div class="ttdeci">#define POLARSSL_MEMORY_ALIGN_MULTIPLE</div><div class="ttdoc">Align on multiples of this value. </div><div class="ttdef"><b>Definition:</b> <a href="memory__buffer__alloc_8h_source.html#l00047">memory_buffer_alloc.h:47</a></div></div>
<div class="ttc" id="threading_8h_html_a20d968ec5d48ea16cfab980204e3cb90"><div class="ttname"><a href="threading_8h.html#a20d968ec5d48ea16cfab980204e3cb90">polarssl_mutex_lock</a></div><div class="ttdeci">int(* polarssl_mutex_lock)(threading_mutex_t *mutex)</div></div>
<div class="ttc" id="memory__buffer__alloc_8h_html_a422e29785ed0ae2e31ca9688a0f18267"><div class="ttname"><a href="memory__buffer__alloc_8h.html#a422e29785ed0ae2e31ca9688a0f18267">memory_buffer_alloc_free</a></div><div class="ttdeci">void memory_buffer_alloc_free(void)</div><div class="ttdoc">Free the mutex for thread-safety and clear remaining memory. </div></div>
<div class="ttc" id="config_8h_html"><div class="ttname"><a href="config_8h.html">config.h</a></div><div class="ttdoc">Configuration options (set of defines) </div></div>
<div class="ttc" id="platform_8h_html"><div class="ttname"><a href="platform_8h.html">platform.h</a></div><div class="ttdoc">PolarSSL Platform abstraction layer. </div></div>
<div class="ttc" id="memory__buffer__alloc_8h_html_a0cfecc13142981464f1f746863542a86"><div class="ttname"><a href="memory__buffer__alloc_8h.html#a0cfecc13142981464f1f746863542a86">memory_buffer_set_verify</a></div><div class="ttdeci">void memory_buffer_set_verify(int verify)</div><div class="ttdoc">Determine when the allocator should automatically verify the state of the entire chain of headers / m...</div></div>
<div class="ttc" id="memory__buffer__alloc_8h_html_af2745e4cbfe3339911913ed02dccce91"><div class="ttname"><a href="memory__buffer__alloc_8h.html#af2745e4cbfe3339911913ed02dccce91">memory_buffer_alloc_init</a></div><div class="ttdeci">int memory_buffer_alloc_init(unsigned char *buf, size_t len)</div><div class="ttdoc">Initialize use of stack-based memory allocator. </div></div>
<div class="ttc" id="memory__buffer__alloc_8h_html_adc781138868927caa03bfe4b58c4e80d"><div class="ttname"><a href="memory__buffer__alloc_8h.html#adc781138868927caa03bfe4b58c4e80d">MEMORY_VERIFY_FREE</a></div><div class="ttdeci">#define MEMORY_VERIFY_FREE</div><div class="ttdef"><b>Definition:</b> <a href="memory__buffer__alloc_8h_source.html#l00054">memory_buffer_alloc.h:54</a></div></div>
<div class="ttc" id="threading_8h_html"><div class="ttname"><a href="threading_8h.html">threading.h</a></div><div class="ttdoc">Threading abstraction layer. </div></div>
<div class="ttc" id="memory__buffer__alloc_8h_html_a129f05dbba09d85d2b880faeca2a6eff"><div class="ttname"><a href="memory__buffer__alloc_8h.html#a129f05dbba09d85d2b880faeca2a6eff">MEMORY_VERIFY_ALLOC</a></div><div class="ttdeci">#define MEMORY_VERIFY_ALLOC</div><div class="ttdef"><b>Definition:</b> <a href="memory__buffer__alloc_8h_source.html#l00053">memory_buffer_alloc.h:53</a></div></div>
<div class="ttc" id="memory__buffer__alloc_8h_html_a9bf18c3768a4c35d6df53bc781b18d1a"><div class="ttname"><a href="memory__buffer__alloc_8h.html#a9bf18c3768a4c35d6df53bc781b18d1a">memory_buffer_alloc_verify</a></div><div class="ttdeci">int memory_buffer_alloc_verify(void)</div><div class="ttdoc">Verifies that all headers in the memory buffer are correct and contain sane values. </div></div>
<div class="ttc" id="memory__buffer__alloc_8h_html"><div class="ttname"><a href="memory__buffer__alloc_8h.html">memory_buffer_alloc.h</a></div><div class="ttdoc">Buffer-based memory allocator. </div></div>
<div class="ttc" id="threading_8h_html_aaf60b0265d71e36e1429c513e2890a0f"><div class="ttname"><a href="threading_8h.html#aaf60b0265d71e36e1429c513e2890a0f">polarssl_mutex_free</a></div><div class="ttdeci">int(* polarssl_mutex_free)(threading_mutex_t *mutex)</div></div>
<div class="ttc" id="threading_8h_html_a3f71f2d457fdf4f03268eb731abf3a98"><div class="ttname"><a href="threading_8h.html#a3f71f2d457fdf4f03268eb731abf3a98">polarssl_mutex_unlock</a></div><div class="ttdeci">int(* polarssl_mutex_unlock)(threading_mutex_t *mutex)</div></div>
<div class="ttc" id="threading_8h_html_aa6c63dc2e1bfeab14346ded406410603"><div class="ttname"><a href="threading_8h.html#aa6c63dc2e1bfeab14346ded406410603">polarssl_mutex_init</a></div><div class="ttdeci">int(* polarssl_mutex_init)(threading_mutex_t *mutex)</div></div>
<div class="ttc" id="platform_8h_html_a1cf50644470132d69e084ce34f4182fe"><div class="ttname"><a href="platform_8h.html#a1cf50644470132d69e084ce34f4182fe">polarssl_fprintf</a></div><div class="ttdeci">#define polarssl_fprintf</div><div class="ttdef"><b>Definition:</b> <a href="platform_8h_source.html#l00121">platform.h:121</a></div></div>
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