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 <span id="projectnumber">3.2.21</span>
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<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"> * lib/cache_mngt.c Cache Management</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"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * License as published by the Free Software Foundation version 2.1</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * of the License.</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"> * Copyright (c) 2003-2012 Thomas Graf <tgraf@suug.ch></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"></span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * @ingroup core</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * @defgroup cache_mngt Caching System</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"> * Related sections in the development guide:</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * - @core_doc{core_cache, Caching System}</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * @{</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"> * Header</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * ------</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * ~~~~{.c}</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * #include <netlink/cache.h></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * ~~~~</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <netlink-private/netlink.h></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <netlink/netlink.h></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <netlink/cache.h></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <netlink/utils.h></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">static</span> <span class="keyword">struct </span>nl_cache_ops *cache_ops;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">static</span> NL_RW_LOCK(cache_ops_lock);</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * @name Cache Operations Sets</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">struct </span>nl_cache_ops *__nl_cache_ops_lookup(<span class="keyword">const</span> <span class="keywordtype">char</span> *name)</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">for</span> (ops = cache_ops; ops; ops = ops->co_next)</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (!strcmp(ops->co_name, name))</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> ops;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"></span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * Increment reference counter</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * @arg ops Cache operations</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga7a1309f9bcfe7994f9b923bc44f09db0"> 56</a></span> <span class="keywordtype">void</span> <a class="code" href="group__cache__mngt.html#ga7a1309f9bcfe7994f9b923bc44f09db0" title="Increment reference counter.">nl_cache_ops_get</a>(<span class="keyword">struct</span> nl_cache_ops *ops)</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  ops->co_refcnt++;</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="comment"></span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * Decrement reference counter</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> * @arg ops Cache operations</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#gade704ebd88e2db2ef68e59a1271f6dbf"> 65</a></span> <span class="keywordtype">void</span> <a class="code" href="group__cache__mngt.html#gade704ebd88e2db2ef68e59a1271f6dbf" title="Decrement reference counter.">nl_cache_ops_put</a>(<span class="keyword">struct</span> nl_cache_ops *ops)</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>  ops->co_refcnt--;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * Lookup cache operations by name</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * @arg name name of the cache type</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * @attention This function is not safe, it does not increment the reference</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> * counter. Please use nl_cache_ops_lookup_safe().</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * @return The cache operations or NULL if not found.</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga7657cf661e569b4b43842a82e409b5fd"> 79</a></span> <span class="keyword">struct </span>nl_cache_ops *<a class="code" href="group__cache__mngt.html#ga7657cf661e569b4b43842a82e409b5fd" title="Lookup cache operations by name.">nl_cache_ops_lookup</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name)</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">struct </span>nl_cache_ops *ops;</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>  nl_read_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  ops = __nl_cache_ops_lookup(name);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  nl_read_unlock(&cache_ops_lock);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> ops;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> }</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"></span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * Lookup cache operations by name</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> * @arg name name of the cache type</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> * @note The reference counter of the returned cache operation is incremented</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * and must be decremented after use with nl_cache_ops_put().</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> * @return The cache operations or NULL if not found.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#gab0445ba79fcf3928b6ba402297b1a773"> 99</a></span> <span class="keyword">struct </span>nl_cache_ops *<a class="code" href="group__cache__mngt.html#gab0445ba79fcf3928b6ba402297b1a773" title="Lookup cache operations by name.">nl_cache_ops_lookup_safe</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name)</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</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>  nl_write_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> ((ops = __nl_cache_ops_lookup(name)))</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="group__cache__mngt.html#ga7a1309f9bcfe7994f9b923bc44f09db0" title="Increment reference counter.">nl_cache_ops_get</a>(ops);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  nl_write_unlock(&cache_ops_lock);</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="keywordflow">return</span> ops;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">static</span> <span class="keyword">struct </span>nl_cache_ops *__cache_ops_associate(<span class="keywordtype">int</span> protocol, <span class="keywordtype">int</span> msgtype)</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> {</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">for</span> (ops = cache_ops; ops; ops = ops->co_next) {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (ops->co_protocol != protocol)</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">for</span> (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++)</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">if</span> (ops->co_msgtypes[i].mt_id == msgtype)</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> ops;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">return</span> NULL;</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="comment"></span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * Associate protocol and message type to cache operations</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * @arg protocol netlink protocol</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * @arg msgtype netlink message type</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * @attention This function is not safe, it does not increment the reference</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> * counter. Please use nl_cache_ops_associate_safe().</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> * @see nl_cache_ops_associate_safe()</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> * @return The cache operations or NULL if no match found.</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga92ddd84e94041733d8def0492b0afc1e"> 140</a></span> <span class="keyword">struct </span>nl_cache_ops *<a class="code" href="group__cache__mngt.html#ga92ddd84e94041733d8def0492b0afc1e" title="Associate protocol and message type to cache operations.">nl_cache_ops_associate</a>(<span class="keywordtype">int</span> protocol, <span class="keywordtype">int</span> msgtype)</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  nl_read_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  ops = __cache_ops_associate(protocol, msgtype);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  nl_read_unlock(&cache_ops_lock);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">return</span> ops;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> }</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"></span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> * Associate protocol and message type to cache operations</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> * @arg protocol netlink protocol</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> * @arg msgtype netlink message type</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> * Searches the registered cache operations for a matching protocol</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> * and message type.</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"> * @note The reference counter of the returned cache operation is incremented</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> * and must be decremented after use with nl_cache_ops_put().</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> * @return The cache operations or NULL if no no match was found.</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga42ba9343cc5a131a425cf6082e748eea"> 164</a></span> <span class="keyword">struct </span>nl_cache_ops *<a class="code" href="group__cache__mngt.html#ga42ba9343cc5a131a425cf6082e748eea" title="Associate protocol and message type to cache operations.">nl_cache_ops_associate_safe</a>(<span class="keywordtype">int</span> protocol, <span class="keywordtype">int</span> msgtype)</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>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  nl_write_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> ((ops = __cache_ops_associate(protocol, msgtype)))</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <a class="code" href="group__cache__mngt.html#ga7a1309f9bcfe7994f9b923bc44f09db0" title="Increment reference counter.">nl_cache_ops_get</a>(ops);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  nl_write_unlock(&cache_ops_lock);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">return</span> ops;</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="comment"></span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> * Lookup message type cache association</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment"> * @arg ops cache operations</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"> * @arg msgtype netlink message type</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"> * Searches for a matching message type association ing the specified</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"> * cache operations.</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"> * @attention The guranteed lifetime of the returned message type is bound</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment"> * to the lifetime of the underlying cache operations.</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> * @return A message type association or NULL.</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga8c4f353b471c72ce5158ad89318eb910"> 189</a></span> <span class="keyword">struct </span>nl_msgtype *<a class="code" href="group__cache__mngt.html#ga8c4f353b471c72ce5158ad89318eb910" title="Lookup message type cache association.">nl_msgtype_lookup</a>(<span class="keyword">struct</span> nl_cache_ops *ops, <span class="keywordtype">int</span> msgtype)</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="keywordtype">int</span> i;</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>  <span class="keywordflow">for</span> (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++)</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> (ops->co_msgtypes[i].mt_id == msgtype)</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">return</span> &ops->co_msgtypes[i];</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> }</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="comment">/* Must hold cache_ops_lock */</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">static</span> <span class="keyword">struct </span>nl_cache_ops *cache_ops_lookup_for_obj(<span class="keyword">struct</span> nl_object_ops *obj_ops)</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> {</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">for</span> (ops = cache_ops; ops; ops = ops->co_next)</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">if</span> (ops->co_obj_ops == obj_ops)</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">return</span> ops;</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="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"></span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment"> * Call a function for each registered cache operation</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment"> * @arg cb Callback function to be called</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment"> * @arg arg User specific argument.</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga36353f3e7b601bbcb6853bd194e59c67"> 218</a></span> <span class="keywordtype">void</span> <a class="code" href="group__cache__mngt.html#ga36353f3e7b601bbcb6853bd194e59c67" title="Call a function for each registered cache operation.">nl_cache_ops_foreach</a>(<span class="keywordtype">void</span> (*cb)(<span class="keyword">struct</span> nl_cache_ops *, <span class="keywordtype">void</span> *), <span class="keywordtype">void</span> *arg)</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="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  nl_read_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">for</span> (ops = cache_ops; ops; ops = ops->co_next)</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  cb(ops, arg);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  nl_read_unlock(&cache_ops_lock);</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="comment"></span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment"> * Set default flags for caches of this type</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment"> * @arg ops Cache ops</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"> * @arg flags Flags to set</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment"> * The cache operation flags will be derived to all caches allocates</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment"> * based on this set of cache operations.</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga4f374df7ea34d127a0d934dedd2682be"> 236</a></span> <span class="keywordtype">void</span> <a class="code" href="group__cache__mngt.html#ga4f374df7ea34d127a0d934dedd2682be" title="Set default flags for caches of this type.">nl_cache_ops_set_flags</a>(<span class="keyword">struct</span> nl_cache_ops *ops, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> flags)</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> {</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  nl_write_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  ops->co_flags |= flags;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  nl_write_unlock(&cache_ops_lock);</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> <span class="comment"></span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment"> * Register a set of cache operations</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment"> * @arg ops cache operations</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment"> * Called by users of caches to announce the avaibility of</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment"> * a certain cache type.</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> <span class="comment"> * @return 0 on success or a negative error code.</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga390eeb1fa61634cf1c216792c6df63c3"> 252</a></span> <span class="keywordtype">int</span> <a class="code" href="group__cache__mngt.html#ga390eeb1fa61634cf1c216792c6df63c3" title="Register a set of cache operations.">nl_cache_mngt_register</a>(<span class="keyword">struct</span> nl_cache_ops *ops)</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> {</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">if</span> (!ops->co_name || !ops->co_obj_ops)</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span> -NLE_INVAL;</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>  nl_write_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">if</span> (__nl_cache_ops_lookup(ops->co_name)) {</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  nl_write_unlock(&cache_ops_lock);</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">return</span> -NLE_EXIST;</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  }</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  ops->co_refcnt = 0;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  ops->co_next = cache_ops;</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  cache_ops = ops;</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  nl_write_unlock(&cache_ops_lock);</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>  NL_DBG(1, <span class="stringliteral">"Registered cache operations %s\n"</span>, ops->co_name);</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>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> }</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment"></span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment"> * Unregister a set of cache operations</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"> * @arg ops cache operations</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment"> * Called by users of caches to announce a set of</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment"> * cache operations is no longer available. The</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment"> * specified cache operations must have been registered</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment"> * previously using nl_cache_mngt_register()</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment"> * @return 0 on success or a negative error code</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga09f56b767b3868b7e0cf8559863dde77"> 284</a></span> <span class="keywordtype">int</span> <a class="code" href="group__cache__mngt.html#ga09f56b767b3868b7e0cf8559863dde77" title="Unregister a set of cache operations.">nl_cache_mngt_unregister</a>(<span class="keyword">struct</span> nl_cache_ops *ops)</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> {</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keyword">struct </span>nl_cache_ops *t, **tp;</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordtype">int</span> err = 0;</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  nl_write_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span> (ops->co_refcnt > 0) {</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  err = -NLE_BUSY;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">goto</span> errout;</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  }</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordflow">for</span> (tp = &cache_ops; (t=*tp) != NULL; tp = &t->co_next)</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">if</span> (t == ops)</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">if</span> (!t) {</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  err = -NLE_NOCACHE;</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">goto</span> errout;</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> </div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  NL_DBG(1, <span class="stringliteral">"Unregistered cache operations %s\n"</span>, ops->co_name);</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>  *tp = t->co_next;</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> errout:</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  nl_write_unlock(&cache_ops_lock);</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment"></span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="comment">/** @} */</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment"></span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="comment"> * @name Global Cache Provisioning/Requiring</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="comment"></span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="comment"> * Provide a cache for global use</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="comment"> * @arg cache cache to provide</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="comment"> * Offers the specified cache to be used by other modules.</span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> <span class="comment"> * Only one cache per type may be shared at a time,</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="comment"> * a previsouly provided caches will be overwritten.</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00329"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga6a5f7016b2aa9485979e2de38076014d"> 329</a></span> <span class="keywordtype">void</span> <a class="code" href="group__cache__mngt.html#ga6a5f7016b2aa9485979e2de38076014d" title="Provide a cache for global use.">nl_cache_mngt_provide</a>(<span class="keyword">struct</span> nl_cache *cache)</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> {</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  nl_write_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> </div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  ops = cache_ops_lookup_for_obj(cache->c_ops->co_obj_ops);</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">if</span> (!ops)</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  BUG();</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <a class="code" href="group__cache.html#ga56d5d8e6268b4e6608141d6bea58cdf1" title="Increase reference counter of cache.">nl_cache_get</a>(cache);</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">/*</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="comment"> * Hold a reference to the cache operations to ensure the</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment"> * ops don't go away while we use it to store the cache pointer.</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordflow">if</span> (!ops->co_major_cache)</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <a class="code" href="group__cache__mngt.html#ga7a1309f9bcfe7994f9b923bc44f09db0" title="Increment reference counter.">nl_cache_ops_get</a>(ops);</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> </div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  ops->co_major_cache = cache;</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> </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  nl_write_unlock(&cache_ops_lock);</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> <span class="comment"></span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="comment"> * Unprovide a cache for global use</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="comment"> * @arg cache cache to unprovide</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment"> * Cancels the offer to use a cache globally. The</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="comment"> * cache will no longer be returned via lookups but</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="comment"> * may still be in use.</span></div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga4a0c41c6fc0df3e408f80d14c0565615"> 362</a></span> <span class="keywordtype">void</span> <a class="code" href="group__cache__mngt.html#ga4a0c41c6fc0df3e408f80d14c0565615" title="Unprovide a cache for global use.">nl_cache_mngt_unprovide</a>(<span class="keyword">struct</span> nl_cache *cache)</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> {</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  nl_write_lock(&cache_ops_lock);</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  ops = cache_ops_lookup_for_obj(cache->c_ops->co_obj_ops);</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">if</span> (!ops)</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  BUG();</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (ops->co_major_cache == cache) {</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <a class="code" href="group__cache.html#ga530c896db26d72001d011114b1e6cfaa" title="Free a cache.">nl_cache_free</a>(ops->co_major_cache);</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <a class="code" href="group__cache__mngt.html#gade704ebd88e2db2ef68e59a1271f6dbf" title="Decrement reference counter.">nl_cache_ops_put</a>(ops);</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  ops->co_major_cache = NULL;</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> </div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  nl_write_unlock(&cache_ops_lock);</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> </div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> <span class="keyword">struct </span>nl_cache *__nl_cache_mngt_require(<span class="keyword">const</span> <span class="keywordtype">char</span> *name)</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> {</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keyword">struct </span>nl_cache_ops *ops;</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keyword">struct </span>nl_cache *cache = NULL;</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  ops = <a class="code" href="group__cache__mngt.html#gab0445ba79fcf3928b6ba402297b1a773" title="Lookup cache operations by name.">nl_cache_ops_lookup_safe</a>(name);</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">if</span> (ops) {</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  cache = ops->co_major_cache;</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <a class="code" href="group__cache__mngt.html#gade704ebd88e2db2ef68e59a1271f6dbf" title="Decrement reference counter.">nl_cache_ops_put</a>(ops);</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  }</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  </div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">return</span> cache;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> }</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="comment"></span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="comment"> * Return cache previously provided via nl_cache_mngt_provide()</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="comment"> * @arg name Name of cache to lookup</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="comment"> * @attention This function is not safe, it does not increment the reference</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="comment"> * counter. Please use nl_cache_mngt_require_safe().</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="comment"> * @see nl_cache_mngt_require_safe()</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> <span class="comment"> * @return Pointer to cache or NULL if none registered</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#gad06c0755c030845c3c90ed490108ea5d"> 405</a></span> <span class="keyword">struct </span>nl_cache *<a class="code" href="group__cache__mngt.html#gad06c0755c030845c3c90ed490108ea5d" title="Return cache previously provided via nl_cache_mngt_provide()">nl_cache_mngt_require</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name)</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> {</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keyword">struct </span>nl_cache *cache;</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> </div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">if</span> (!(cache = __nl_cache_mngt_require(name)))</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  NL_DBG(1, <span class="stringliteral">"Application BUG: Your application must "</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="stringliteral">"call nl_cache_mngt_provide() and\nprovide a valid "</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="stringliteral">"%s cache to be used for internal lookups.\nSee the "</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="stringliteral">" API documentation for more details.\n"</span>, name);</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keywordflow">return</span> cache;</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> }</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="comment"></span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="comment"> * Return cache previously provided via nl_cache_mngt_provide()</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="comment"> * @arg name Name of cache to lookup</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="comment"> * @note The reference counter of the returned cache is incremented</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="comment"> * and must be decremented after use with nl_cache_put().</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="comment"> * @return Pointer to cache or NULL if none registered</span></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"><a class="code" href="group__cache__mngt.html#ga7ae2963444ad3d2e41d8825fcbabaff5"> 427</a></span> <span class="keyword">struct </span>nl_cache *<a class="code" href="group__cache__mngt.html#ga7ae2963444ad3d2e41d8825fcbabaff5" title="Return cache previously provided via nl_cache_mngt_provide()">nl_cache_mngt_require_safe</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name)</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> {</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keyword">struct </span>nl_cache *cache;</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> </div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="keywordflow">if</span> ((cache = <a class="code" href="group__cache__mngt.html#gad06c0755c030845c3c90ed490108ea5d" title="Return cache previously provided via nl_cache_mngt_provide()">nl_cache_mngt_require</a>(name)))</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="group__cache.html#ga56d5d8e6268b4e6608141d6bea58cdf1" title="Increase reference counter of cache.">nl_cache_get</a>(cache);</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  </div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="keywordflow">return</span> cache;</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> }</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="comment"></span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="comment">/** @} */</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="comment"></span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="comment">/** @} */</span></div>
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