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<h1>lib/cache.c</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * lib/cache.c Caching Module</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00006"></a>00006 <span class="comment"> * License as published by the Free Software Foundation version 2.1</span>
<a name="l00007"></a>00007 <span class="comment"> * of the License.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch></span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment">/**</span>
<a name="l00013"></a>00013 <span class="comment"> * @ingroup cache_mngt</span>
<a name="l00014"></a>00014 <span class="comment"> * @defgroup cache Cache</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * @code</span>
<a name="l00017"></a>00017 <span class="comment"> * Cache Management | | Type Specific Cache Operations</span>
<a name="l00018"></a>00018 <span class="comment"> * </span>
<a name="l00019"></a>00019 <span class="comment"> * | | +----------------+ +------------+</span>
<a name="l00020"></a>00020 <span class="comment"> * | request update | | msg_parser |</span>
<a name="l00021"></a>00021 <span class="comment"> * | | +----------------+ +------------+</span>
<a name="l00022"></a>00022 <span class="comment"> * +- - - - -^- - - - - - - -^- -|- - - -</span>
<a name="l00023"></a>00023 <span class="comment"> * nl_cache_update: | | | |</span>
<a name="l00024"></a>00024 <span class="comment"> * 1) --------- co_request_update ------+ | |</span>
<a name="l00025"></a>00025 <span class="comment"> * | | |</span>
<a name="l00026"></a>00026 <span class="comment"> * 2) destroy old cache +----------- pp_cb ---------|---+</span>
<a name="l00027"></a>00027 <span class="comment"> * | | |</span>
<a name="l00028"></a>00028 <span class="comment"> * 3) ---------- nl_recvmsgs ----------+ +- cb_valid -+</span>
<a name="l00029"></a>00029 <span class="comment"> * +--------------+ | | | |</span>
<a name="l00030"></a>00030 <span class="comment"> * | nl_cache_add |<-----+ + - - -v- -|- - - - - - - - - - -</span>
<a name="l00031"></a>00031 <span class="comment"> * +--------------+ | | +-------------+</span>
<a name="l00032"></a>00032 <span class="comment"> * | nl_recvmsgs |</span>
<a name="l00033"></a>00033 <span class="comment"> * | | +-----|-^-----+</span>
<a name="l00034"></a>00034 <span class="comment"> * +---v-|---+</span>
<a name="l00035"></a>00035 <span class="comment"> * | | | nl_recv |</span>
<a name="l00036"></a>00036 <span class="comment"> * +---------+</span>
<a name="l00037"></a>00037 <span class="comment"> * | | Core Netlink</span>
<a name="l00038"></a>00038 <span class="comment"> * @endcode</span>
<a name="l00039"></a>00039 <span class="comment"> * </span>
<a name="l00040"></a>00040 <span class="comment"> * @{</span>
<a name="l00041"></a>00041 <span class="comment"> */</span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="preprocessor">#include <netlink-local.h></span>
<a name="l00044"></a>00044 <span class="preprocessor">#include <netlink/netlink.h></span>
<a name="l00045"></a>00045 <span class="preprocessor">#include <netlink/cache.h></span>
<a name="l00046"></a>00046 <span class="preprocessor">#include <netlink/object.h></span>
<a name="l00047"></a>00047 <span class="preprocessor">#include <netlink/utils.h></span>
<a name="l00048"></a>00048 <span class="comment"></span>
<a name="l00049"></a>00049 <span class="comment">/**</span>
<a name="l00050"></a>00050 <span class="comment"> * @name Access Functions</span>
<a name="l00051"></a>00051 <span class="comment"> * @{</span>
<a name="l00052"></a>00052 <span class="comment"> */</span>
<a name="l00053"></a>00053 <span class="comment"></span>
<a name="l00054"></a>00054 <span class="comment">/**</span>
<a name="l00055"></a>00055 <span class="comment"> * Return the number of items in the cache</span>
<a name="l00056"></a>00056 <span class="comment"> * @arg cache cache handle</span>
<a name="l00057"></a>00057 <span class="comment"> */</span>
<a name="l00058"></a><a class="code" href="group__cache.html#ga47554223760ce5293c5c3dc8bf07cac8">00058</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#ga47554223760ce5293c5c3dc8bf07cac8" title="Return the number of items in the cache.">nl_cache_nitems</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 <span class="keywordflow">return</span> cache->c_nitems;
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 <span class="comment"></span>
<a name="l00063"></a>00063 <span class="comment">/**</span>
<a name="l00064"></a>00064 <span class="comment"> * Return the number of items matching a filter in the cache</span>
<a name="l00065"></a>00065 <span class="comment"> * @arg cache Cache object.</span>
<a name="l00066"></a>00066 <span class="comment"> * @arg filter Filter object.</span>
<a name="l00067"></a>00067 <span class="comment"> */</span>
<a name="l00068"></a><a class="code" href="group__cache.html#ga57a3c518ce67e5e1db978a6eb039413f">00068</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#ga57a3c518ce67e5e1db978a6eb039413f" title="Return the number of items matching a filter in the cache.">nl_cache_nitems_filter</a>(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_object *filter)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 <span class="keyword">struct </span><a class="code" href="structnl__object__ops.html" title="Object Operations.">nl_object_ops</a> *ops;
<a name="l00071"></a>00071 <span class="keyword">struct </span>nl_object *obj;
<a name="l00072"></a>00072 <span class="keywordtype">int</span> nitems = 0;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keywordflow">if</span> (cache->c_ops == NULL)
<a name="l00075"></a>00075 BUG();
<a name="l00076"></a>00076
<a name="l00077"></a>00077 ops = cache->c_ops->co_obj_ops;
<a name="l00078"></a>00078
<a name="l00079"></a>00079 nl_list_for_each_entry(obj, &cache->c_items, ce_list) {
<a name="l00080"></a>00080 <span class="keywordflow">if</span> (filter && !<a class="code" href="group__object.html#gad4d9124deaff34511d03f3b73fef040c" title="Match a filter against an object.">nl_object_match_filter</a>(obj, filter))
<a name="l00081"></a>00081 <span class="keywordflow">continue</span>;
<a name="l00082"></a>00082
<a name="l00083"></a>00083 nitems++;
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="keywordflow">return</span> nitems;
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088 <span class="comment"></span>
<a name="l00089"></a>00089 <span class="comment">/**</span>
<a name="l00090"></a>00090 <span class="comment"> * Returns \b true if the cache is empty.</span>
<a name="l00091"></a>00091 <span class="comment"> * @arg cache Cache to check</span>
<a name="l00092"></a>00092 <span class="comment"> * @return \a true if the cache is empty, otherwise \b false is returned.</span>
<a name="l00093"></a>00093 <span class="comment"> */</span>
<a name="l00094"></a><a class="code" href="group__cache.html#ga921e4e1d4781714a47ad4c00e8a3bed2">00094</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#ga921e4e1d4781714a47ad4c00e8a3bed2" title="Returns true if the cache is empty.">nl_cache_is_empty</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 <span class="keywordflow">return</span> nl_list_empty(&cache->c_items);
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098 <span class="comment"></span>
<a name="l00099"></a>00099 <span class="comment">/**</span>
<a name="l00100"></a>00100 <span class="comment"> * Return the operations set of the cache</span>
<a name="l00101"></a>00101 <span class="comment"> * @arg cache cache handle</span>
<a name="l00102"></a>00102 <span class="comment"> */</span>
<a name="l00103"></a><a class="code" href="group__cache.html#ga20673ac0b3b5717b38e71dad37e2cb93">00103</a> <span class="keyword">struct </span><a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *<a class="code" href="group__cache.html#ga20673ac0b3b5717b38e71dad37e2cb93" title="Return the operations set of the cache.">nl_cache_get_ops</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00104"></a>00104 {
<a name="l00105"></a>00105 <span class="keywordflow">return</span> cache->c_ops;
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 <span class="comment"></span>
<a name="l00108"></a>00108 <span class="comment">/**</span>
<a name="l00109"></a>00109 <span class="comment"> * Return the first element in the cache</span>
<a name="l00110"></a>00110 <span class="comment"> * @arg cache cache handle</span>
<a name="l00111"></a>00111 <span class="comment"> */</span>
<a name="l00112"></a><a class="code" href="group__cache.html#ga2d7a6e36cf61c536b0b664afa04fe001">00112</a> <span class="keyword">struct </span>nl_object *<a class="code" href="group__cache.html#ga2d7a6e36cf61c536b0b664afa04fe001" title="Return the first element in the cache.">nl_cache_get_first</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="keywordflow">if</span> (nl_list_empty(&cache->c_items))
<a name="l00115"></a>00115 <span class="keywordflow">return</span> NULL;
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">return</span> nl_list_entry(cache->c_items.next,
<a name="l00118"></a>00118 <span class="keyword">struct</span> nl_object, ce_list);
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 <span class="comment"></span>
<a name="l00121"></a>00121 <span class="comment">/**</span>
<a name="l00122"></a>00122 <span class="comment"> * Return the last element in the cache</span>
<a name="l00123"></a>00123 <span class="comment"> * @arg cache cache handle</span>
<a name="l00124"></a>00124 <span class="comment"> */</span>
<a name="l00125"></a><a class="code" href="group__cache.html#gac0767be207d9a57600939544da48c33f">00125</a> <span class="keyword">struct </span>nl_object *<a class="code" href="group__cache.html#gac0767be207d9a57600939544da48c33f" title="Return the last element in the cache.">nl_cache_get_last</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (nl_list_empty(&cache->c_items))
<a name="l00128"></a>00128 <span class="keywordflow">return</span> NULL;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keywordflow">return</span> nl_list_entry(cache->c_items.prev,
<a name="l00131"></a>00131 <span class="keyword">struct</span> nl_object, ce_list);
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 <span class="comment"></span>
<a name="l00134"></a>00134 <span class="comment">/**</span>
<a name="l00135"></a>00135 <span class="comment"> * Return the next element in the cache</span>
<a name="l00136"></a>00136 <span class="comment"> * @arg obj current object</span>
<a name="l00137"></a>00137 <span class="comment"> */</span>
<a name="l00138"></a><a class="code" href="group__cache.html#ga22a6394070bffe8df63b81d0cb0a4dc2">00138</a> <span class="keyword">struct </span>nl_object *<a class="code" href="group__cache.html#ga22a6394070bffe8df63b81d0cb0a4dc2" title="Return the next element in the cache.">nl_cache_get_next</a>(<span class="keyword">struct</span> nl_object *obj)
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 <span class="keywordflow">if</span> (nl_list_at_tail(obj, &obj->ce_cache->c_items, ce_list))
<a name="l00141"></a>00141 <span class="keywordflow">return</span> NULL;
<a name="l00142"></a>00142 <span class="keywordflow">else</span>
<a name="l00143"></a>00143 <span class="keywordflow">return</span> nl_list_entry(obj->ce_list.next,
<a name="l00144"></a>00144 <span class="keyword">struct</span> nl_object, ce_list);
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 <span class="comment"></span>
<a name="l00147"></a>00147 <span class="comment">/**</span>
<a name="l00148"></a>00148 <span class="comment"> * Return the previous element in the cache</span>
<a name="l00149"></a>00149 <span class="comment"> * @arg obj current object</span>
<a name="l00150"></a>00150 <span class="comment"> */</span>
<a name="l00151"></a><a class="code" href="group__cache.html#ga683817f4551540a0e035f76bb40696fb">00151</a> <span class="keyword">struct </span>nl_object *<a class="code" href="group__cache.html#ga683817f4551540a0e035f76bb40696fb" title="Return the previous element in the cache.">nl_cache_get_prev</a>(<span class="keyword">struct</span> nl_object *obj)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <span class="keywordflow">if</span> (nl_list_at_head(obj, &obj->ce_cache->c_items, ce_list))
<a name="l00154"></a>00154 <span class="keywordflow">return</span> NULL;
<a name="l00155"></a>00155 <span class="keywordflow">else</span>
<a name="l00156"></a>00156 <span class="keywordflow">return</span> nl_list_entry(obj->ce_list.prev,
<a name="l00157"></a>00157 <span class="keyword">struct</span> nl_object, ce_list);
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159 <span class="comment"></span>
<a name="l00160"></a>00160 <span class="comment">/** @} */</span>
<a name="l00161"></a>00161 <span class="comment"></span>
<a name="l00162"></a>00162 <span class="comment">/**</span>
<a name="l00163"></a>00163 <span class="comment"> * @name Cache Creation/Deletion</span>
<a name="l00164"></a>00164 <span class="comment"> * @{</span>
<a name="l00165"></a>00165 <span class="comment"> */</span>
<a name="l00166"></a>00166 <span class="comment"></span>
<a name="l00167"></a>00167 <span class="comment">/**</span>
<a name="l00168"></a>00168 <span class="comment"> * Allocate an empty cache</span>
<a name="l00169"></a>00169 <span class="comment"> * @arg ops cache operations to base the cache on</span>
<a name="l00170"></a>00170 <span class="comment"> * </span>
<a name="l00171"></a>00171 <span class="comment"> * @return A newly allocated and initialized cache.</span>
<a name="l00172"></a>00172 <span class="comment"> */</span>
<a name="l00173"></a><a class="code" href="group__cache.html#ga9520ae0f2158db3c081f34c851d92252">00173</a> <span class="keyword">struct </span>nl_cache *<a class="code" href="group__cache.html#ga9520ae0f2158db3c081f34c851d92252" title="Allocate an empty cache.">nl_cache_alloc</a>(<span class="keyword">struct</span> <a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops)
<a name="l00174"></a>00174 {
<a name="l00175"></a>00175 <span class="keyword">struct </span>nl_cache *cache;
<a name="l00176"></a>00176
<a name="l00177"></a>00177 cache = calloc(1, <span class="keyword">sizeof</span>(*cache));
<a name="l00178"></a>00178 <span class="keywordflow">if</span> (!cache) {
<a name="l00179"></a>00179 nl_errno(ENOMEM);
<a name="l00180"></a>00180 <span class="keywordflow">return</span> NULL;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182
<a name="l00183"></a>00183 nl_init_list_head(&cache->c_items);
<a name="l00184"></a>00184 cache->c_ops = ops;
<a name="l00185"></a>00185
<a name="l00186"></a>00186 NL_DBG(2, <span class="stringliteral">"Allocated cache %p <%s>.\n"</span>, cache, nl_cache_name(cache));
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="keywordflow">return</span> cache;
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190 <span class="comment"></span>
<a name="l00191"></a>00191 <span class="comment">/**</span>
<a name="l00192"></a>00192 <span class="comment"> * Allocate an empty cache based on type name</span>
<a name="l00193"></a>00193 <span class="comment"> * @arg kind Name of cache type</span>
<a name="l00194"></a>00194 <span class="comment"> * @return A newly allocated and initialized cache.</span>
<a name="l00195"></a>00195 <span class="comment"> */</span>
<a name="l00196"></a><a class="code" href="group__cache.html#ga8f50f55c63db05b184645ee6bff23649">00196</a> <span class="keyword">struct </span>nl_cache *<a class="code" href="group__cache.html#ga8f50f55c63db05b184645ee6bff23649" title="Allocate an empty cache based on type name.">nl_cache_alloc_name</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *kind)
<a name="l00197"></a>00197 {
<a name="l00198"></a>00198 <span class="keyword">struct </span><a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops;
<a name="l00199"></a>00199
<a name="l00200"></a>00200 ops = <a class="code" href="group__cache__mngt.html#ga7657cf661e569b4b43842a82e409b5fd" title="Lookup the set cache operations of a certain cache type.">nl_cache_ops_lookup</a>(kind);
<a name="l00201"></a>00201 <span class="keywordflow">if</span> (!ops) {
<a name="l00202"></a>00202 nl_error(ENOENT, <span class="stringliteral">"Unable to lookup cache \"%s\""</span>, kind);
<a name="l00203"></a>00203 <span class="keywordflow">return</span> NULL;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205
<a name="l00206"></a>00206 <span class="keywordflow">return</span> <a class="code" href="group__cache.html#ga9520ae0f2158db3c081f34c851d92252" title="Allocate an empty cache.">nl_cache_alloc</a>(ops);
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208 <span class="comment"></span>
<a name="l00209"></a>00209 <span class="comment">/**</span>
<a name="l00210"></a>00210 <span class="comment"> * Allocate a new cache containing a subset of a cache</span>
<a name="l00211"></a>00211 <span class="comment"> * @arg orig Original cache to be based on</span>
<a name="l00212"></a>00212 <span class="comment"> * @arg filter Filter defining the subset to be filled into new cache</span>
<a name="l00213"></a>00213 <span class="comment"> * @return A newly allocated cache or NULL.</span>
<a name="l00214"></a>00214 <span class="comment"> */</span>
<a name="l00215"></a><a class="code" href="group__cache.html#ga5ea44d636362abb91193084ec71a2668">00215</a> <span class="keyword">struct </span>nl_cache *<a class="code" href="group__cache.html#ga5ea44d636362abb91193084ec71a2668" title="Allocate a new cache containing a subset of a cache.">nl_cache_subset</a>(<span class="keyword">struct</span> nl_cache *orig,
<a name="l00216"></a>00216 <span class="keyword">struct</span> nl_object *filter)
<a name="l00217"></a>00217 {
<a name="l00218"></a>00218 <span class="keyword">struct </span>nl_cache *cache;
<a name="l00219"></a>00219 <span class="keyword">struct </span><a class="code" href="structnl__object__ops.html" title="Object Operations.">nl_object_ops</a> *ops;
<a name="l00220"></a>00220 <span class="keyword">struct </span>nl_object *obj;
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="keywordflow">if</span> (!filter)
<a name="l00223"></a>00223 BUG();
<a name="l00224"></a>00224
<a name="l00225"></a>00225 cache = <a class="code" href="group__cache.html#ga9520ae0f2158db3c081f34c851d92252" title="Allocate an empty cache.">nl_cache_alloc</a>(orig->c_ops);
<a name="l00226"></a>00226 <span class="keywordflow">if</span> (!cache)
<a name="l00227"></a>00227 <span class="keywordflow">return</span> NULL;
<a name="l00228"></a>00228
<a name="l00229"></a>00229 ops = orig->c_ops->co_obj_ops;
<a name="l00230"></a>00230
<a name="l00231"></a>00231 nl_list_for_each_entry(obj, &orig->c_items, ce_list) {
<a name="l00232"></a>00232 <span class="keywordflow">if</span> (!<a class="code" href="group__object.html#gad4d9124deaff34511d03f3b73fef040c" title="Match a filter against an object.">nl_object_match_filter</a>(obj, filter))
<a name="l00233"></a>00233 <span class="keywordflow">continue</span>;
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <a class="code" href="group__cache.html#ga5edfe88c7223702e3fbb909584bd87db" title="Add object to a cache.">nl_cache_add</a>(cache, obj);
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <span class="keywordflow">return</span> cache;
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240 <span class="comment"></span>
<a name="l00241"></a>00241 <span class="comment">/**</span>
<a name="l00242"></a>00242 <span class="comment"> * Clear a cache.</span>
<a name="l00243"></a>00243 <span class="comment"> * @arg cache cache to clear</span>
<a name="l00244"></a>00244 <span class="comment"> *</span>
<a name="l00245"></a>00245 <span class="comment"> * Removes all elements of a cache.</span>
<a name="l00246"></a>00246 <span class="comment"> */</span>
<a name="l00247"></a><a class="code" href="group__cache.html#gad22be4bd392afc8daca60a80f24a277b">00247</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#gad22be4bd392afc8daca60a80f24a277b" title="Clear a cache.">nl_cache_clear</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00248"></a>00248 {
<a name="l00249"></a>00249 <span class="keyword">struct </span>nl_object *obj, *tmp;
<a name="l00250"></a>00250
<a name="l00251"></a>00251 NL_DBG(1, <span class="stringliteral">"Clearing cache %p <%s>...\n"</span>, cache, nl_cache_name(cache));
<a name="l00252"></a>00252
<a name="l00253"></a>00253 nl_list_for_each_entry_safe(obj, tmp, &cache->c_items, ce_list)
<a name="l00254"></a>00254 <a class="code" href="group__cache.html#ga8d1f1d2c3b355a7f129d9cd6f7da2b52" title="Removes an object from a cache.">nl_cache_remove</a>(obj);
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256 <span class="comment"></span>
<a name="l00257"></a>00257 <span class="comment">/**</span>
<a name="l00258"></a>00258 <span class="comment"> * Free a cache.</span>
<a name="l00259"></a>00259 <span class="comment"> * @arg cache Cache to free.</span>
<a name="l00260"></a>00260 <span class="comment"> *</span>
<a name="l00261"></a>00261 <span class="comment"> * Removes all elements of a cache and frees all memory.</span>
<a name="l00262"></a>00262 <span class="comment"> *</span>
<a name="l00263"></a>00263 <span class="comment"> * @note Use this function if you are working with allocated caches.</span>
<a name="l00264"></a>00264 <span class="comment"> */</span>
<a name="l00265"></a><a class="code" href="group__cache.html#ga530c896db26d72001d011114b1e6cfaa">00265</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#ga530c896db26d72001d011114b1e6cfaa" title="Free a cache.">nl_cache_free</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00266"></a>00266 {
<a name="l00267"></a>00267 <a class="code" href="group__cache.html#gad22be4bd392afc8daca60a80f24a277b" title="Clear a cache.">nl_cache_clear</a>(cache);
<a name="l00268"></a>00268 NL_DBG(1, <span class="stringliteral">"Freeing cache %p <%s>...\n"</span>, cache, nl_cache_name(cache));
<a name="l00269"></a>00269 free(cache);
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271 <span class="comment"></span>
<a name="l00272"></a>00272 <span class="comment">/** @} */</span>
<a name="l00273"></a>00273 <span class="comment"></span>
<a name="l00274"></a>00274 <span class="comment">/**</span>
<a name="l00275"></a>00275 <span class="comment"> * @name Cache Modifications</span>
<a name="l00276"></a>00276 <span class="comment"> * @{</span>
<a name="l00277"></a>00277 <span class="comment"> */</span>
<a name="l00278"></a>00278
<a name="l00279"></a>00279 <span class="keyword">static</span> <span class="keywordtype">int</span> __cache_add(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_object *obj)
<a name="l00280"></a>00280 {
<a name="l00281"></a>00281 obj->ce_cache = cache;
<a name="l00282"></a>00282
<a name="l00283"></a>00283 nl_list_add_tail(&obj->ce_list, &cache->c_items);
<a name="l00284"></a>00284 cache->c_nitems++;
<a name="l00285"></a>00285
<a name="l00286"></a>00286 NL_DBG(1, <span class="stringliteral">"Added %p to cache %p <%s>.\n"</span>,
<a name="l00287"></a>00287 obj, cache, nl_cache_name(cache));
<a name="l00288"></a>00288
<a name="l00289"></a>00289 <span class="keywordflow">return</span> 0;
<a name="l00290"></a>00290 }
<a name="l00291"></a>00291 <span class="comment"></span>
<a name="l00292"></a>00292 <span class="comment">/**</span>
<a name="l00293"></a>00293 <span class="comment"> * Add object to a cache.</span>
<a name="l00294"></a>00294 <span class="comment"> * @arg cache Cache to add object to</span>
<a name="l00295"></a>00295 <span class="comment"> * @arg obj Object to be added to the cache</span>
<a name="l00296"></a>00296 <span class="comment"> *</span>
<a name="l00297"></a>00297 <span class="comment"> * Adds the given object to the specified cache. The object is cloned</span>
<a name="l00298"></a>00298 <span class="comment"> * if it has been added to another cache already.</span>
<a name="l00299"></a>00299 <span class="comment"> *</span>
<a name="l00300"></a>00300 <span class="comment"> * @return 0 or a negative error code.</span>
<a name="l00301"></a>00301 <span class="comment"> */</span>
<a name="l00302"></a><a class="code" href="group__cache.html#ga5edfe88c7223702e3fbb909584bd87db">00302</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#ga5edfe88c7223702e3fbb909584bd87db" title="Add object to a cache.">nl_cache_add</a>(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_object *obj)
<a name="l00303"></a>00303 {
<a name="l00304"></a>00304 <span class="keyword">struct </span>nl_object *<span class="keyword">new</span>;
<a name="l00305"></a>00305
<a name="l00306"></a>00306 <span class="keywordflow">if</span> (cache->c_ops->co_obj_ops != obj->ce_ops)
<a name="l00307"></a>00307 <span class="keywordflow">return</span> nl_error(EINVAL, <span class="stringliteral">"Object mismatches cache type"</span>);
<a name="l00308"></a>00308
<a name="l00309"></a>00309 <span class="keywordflow">if</span> (!nl_list_empty(&obj->ce_list)) {
<a name="l00310"></a>00310 <span class="keyword">new</span> = <a class="code" href="group__object.html#ga90d86d45c53d2be6ba927bec662159d7" title="Allocate a new object and copy all data from an existing object.">nl_object_clone</a>(obj);
<a name="l00311"></a>00311 <span class="keywordflow">if</span> (!<span class="keyword">new</span>)
<a name="l00312"></a>00312 <span class="keywordflow">return</span> nl_errno(ENOMEM);
<a name="l00313"></a>00313 } <span class="keywordflow">else</span> {
<a name="l00314"></a>00314 <a class="code" href="group__object.html#gabd5767ac47ec6f09d1ac643f44eb8bfd" title="Acquire a reference on a object.">nl_object_get</a>(obj);
<a name="l00315"></a>00315 <span class="keyword">new</span> = obj;
<a name="l00316"></a>00316 }
<a name="l00317"></a>00317
<a name="l00318"></a>00318 <span class="keywordflow">return</span> __cache_add(cache, <span class="keyword">new</span>);
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320 <span class="comment"></span>
<a name="l00321"></a>00321 <span class="comment">/**</span>
<a name="l00322"></a>00322 <span class="comment"> * Move object from one cache to another</span>
<a name="l00323"></a>00323 <span class="comment"> * @arg cache Cache to move object to.</span>
<a name="l00324"></a>00324 <span class="comment"> * @arg obj Object subject to be moved</span>
<a name="l00325"></a>00325 <span class="comment"> *</span>
<a name="l00326"></a>00326 <span class="comment"> * Removes the given object from its associated cache if needed</span>
<a name="l00327"></a>00327 <span class="comment"> * and adds it to the new cache.</span>
<a name="l00328"></a>00328 <span class="comment"> *</span>
<a name="l00329"></a>00329 <span class="comment"> * @return 0 on success or a negative error code.</span>
<a name="l00330"></a>00330 <span class="comment"> */</span>
<a name="l00331"></a><a class="code" href="group__cache.html#gaf4b615bcbd1fb764bcb01c980a7ed3c4">00331</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#gaf4b615bcbd1fb764bcb01c980a7ed3c4" title="Move object from one cache to another.">nl_cache_move</a>(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_object *obj)
<a name="l00332"></a>00332 {
<a name="l00333"></a>00333 <span class="keywordflow">if</span> (cache->c_ops->co_obj_ops != obj->ce_ops)
<a name="l00334"></a>00334 <span class="keywordflow">return</span> nl_error(EINVAL, <span class="stringliteral">"Object mismatches cache type"</span>);
<a name="l00335"></a>00335
<a name="l00336"></a>00336 NL_DBG(3, <span class="stringliteral">"Moving object %p to cache %p\n"</span>, obj, cache);
<a name="l00337"></a>00337
<a name="l00338"></a>00338 <span class="comment">/* Acquire reference, if already in a cache this will be</span>
<a name="l00339"></a>00339 <span class="comment"> * reverted during removal */</span>
<a name="l00340"></a>00340 <a class="code" href="group__object.html#gabd5767ac47ec6f09d1ac643f44eb8bfd" title="Acquire a reference on a object.">nl_object_get</a>(obj);
<a name="l00341"></a>00341
<a name="l00342"></a>00342 <span class="keywordflow">if</span> (!nl_list_empty(&obj->ce_list))
<a name="l00343"></a>00343 <a class="code" href="group__cache.html#ga8d1f1d2c3b355a7f129d9cd6f7da2b52" title="Removes an object from a cache.">nl_cache_remove</a>(obj);
<a name="l00344"></a>00344
<a name="l00345"></a>00345 <span class="keywordflow">return</span> __cache_add(cache, obj);
<a name="l00346"></a>00346 }
<a name="l00347"></a>00347 <span class="comment"></span>
<a name="l00348"></a>00348 <span class="comment">/**</span>
<a name="l00349"></a>00349 <span class="comment"> * Removes an object from a cache.</span>
<a name="l00350"></a>00350 <span class="comment"> * @arg obj Object to remove from its cache</span>
<a name="l00351"></a>00351 <span class="comment"> *</span>
<a name="l00352"></a>00352 <span class="comment"> * Removes the object \c obj from the cache it is assigned to, since</span>
<a name="l00353"></a>00353 <span class="comment"> * an object can only be assigned to one cache at a time, the cache</span>
<a name="l00354"></a>00354 <span class="comment"> * must ne be passed along with it.</span>
<a name="l00355"></a>00355 <span class="comment"> */</span>
<a name="l00356"></a><a class="code" href="group__cache.html#ga8d1f1d2c3b355a7f129d9cd6f7da2b52">00356</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#ga8d1f1d2c3b355a7f129d9cd6f7da2b52" title="Removes an object from a cache.">nl_cache_remove</a>(<span class="keyword">struct</span> nl_object *obj)
<a name="l00357"></a>00357 {
<a name="l00358"></a>00358 <span class="keyword">struct </span>nl_cache *cache = obj->ce_cache;
<a name="l00359"></a>00359
<a name="l00360"></a>00360 <span class="keywordflow">if</span> (cache == NULL)
<a name="l00361"></a>00361 <span class="keywordflow">return</span>;
<a name="l00362"></a>00362
<a name="l00363"></a>00363 nl_list_del(&obj->ce_list);
<a name="l00364"></a>00364 obj->ce_cache = NULL;
<a name="l00365"></a>00365 <a class="code" href="group__object.html#ga9905da094bf4c03cf4ac78aeaa86a12b" title="Release a reference from an object.">nl_object_put</a>(obj);
<a name="l00366"></a>00366 cache->c_nitems--;
<a name="l00367"></a>00367
<a name="l00368"></a>00368 NL_DBG(1, <span class="stringliteral">"Deleted %p from cache %p <%s>.\n"</span>,
<a name="l00369"></a>00369 obj, cache, nl_cache_name(cache));
<a name="l00370"></a>00370 }
<a name="l00371"></a>00371 <span class="comment"></span>
<a name="l00372"></a>00372 <span class="comment">/**</span>
<a name="l00373"></a>00373 <span class="comment"> * Search for an object in a cache</span>
<a name="l00374"></a>00374 <span class="comment"> * @arg cache Cache to search in.</span>
<a name="l00375"></a>00375 <span class="comment"> * @arg needle Object to look for.</span>
<a name="l00376"></a>00376 <span class="comment"> *</span>
<a name="l00377"></a>00377 <span class="comment"> * Iterates over the cache and looks for an object with identical</span>
<a name="l00378"></a>00378 <span class="comment"> * identifiers as the needle.</span>
<a name="l00379"></a>00379 <span class="comment"> *</span>
<a name="l00380"></a>00380 <span class="comment"> * @return Reference to object or NULL if not found.</span>
<a name="l00381"></a>00381 <span class="comment"> * @note The returned object must be returned via nl_object_put().</span>
<a name="l00382"></a>00382 <span class="comment"> */</span>
<a name="l00383"></a><a class="code" href="group__cache.html#ga746f17a6442477f1dbd6513de884000a">00383</a> <span class="keyword">struct </span>nl_object *<a class="code" href="group__cache.html#ga746f17a6442477f1dbd6513de884000a" title="Search for an object in a cache.">nl_cache_search</a>(<span class="keyword">struct</span> nl_cache *cache,
<a name="l00384"></a>00384 <span class="keyword">struct</span> nl_object *needle)
<a name="l00385"></a>00385 {
<a name="l00386"></a>00386 <span class="keyword">struct </span>nl_object *obj;
<a name="l00387"></a>00387
<a name="l00388"></a>00388 nl_list_for_each_entry(obj, &cache->c_items, ce_list) {
<a name="l00389"></a>00389 <span class="keywordflow">if</span> (<a class="code" href="group__object.html#gaab17e2f7a53ad9eb9cae3d0a60e41074" title="Check if the identifiers of two objects are identical.">nl_object_identical</a>(obj, needle)) {
<a name="l00390"></a>00390 <a class="code" href="group__object.html#gabd5767ac47ec6f09d1ac643f44eb8bfd" title="Acquire a reference on a object.">nl_object_get</a>(obj);
<a name="l00391"></a>00391 <span class="keywordflow">return</span> obj;
<a name="l00392"></a>00392 }
<a name="l00393"></a>00393 }
<a name="l00394"></a>00394
<a name="l00395"></a>00395 <span class="keywordflow">return</span> NULL;
<a name="l00396"></a>00396 }
<a name="l00397"></a>00397
<a name="l00398"></a>00398 <span class="comment"></span>
<a name="l00399"></a>00399 <span class="comment">/** @} */</span>
<a name="l00400"></a>00400 <span class="comment"></span>
<a name="l00401"></a>00401 <span class="comment">/**</span>
<a name="l00402"></a>00402 <span class="comment"> * @name Synchronization</span>
<a name="l00403"></a>00403 <span class="comment"> * @{</span>
<a name="l00404"></a>00404 <span class="comment"> */</span>
<a name="l00405"></a>00405 <span class="comment"></span>
<a name="l00406"></a>00406 <span class="comment">/**</span>
<a name="l00407"></a>00407 <span class="comment"> * Request a full dump from the kernel to fill a cache</span>
<a name="l00408"></a>00408 <span class="comment"> * @arg handle Netlink handle</span>
<a name="l00409"></a>00409 <span class="comment"> * @arg cache Cache subjected to be filled.</span>
<a name="l00410"></a>00410 <span class="comment"> *</span>
<a name="l00411"></a>00411 <span class="comment"> * Send a dumping request to the kernel causing it to dump all objects</span>
<a name="l00412"></a>00412 <span class="comment"> * related to the specified cache to the netlink socket.</span>
<a name="l00413"></a>00413 <span class="comment"> *</span>
<a name="l00414"></a>00414 <span class="comment"> * Use nl_cache_pickup() to read the objects from the socket and fill them</span>
<a name="l00415"></a>00415 <span class="comment"> * into a cache.</span>
<a name="l00416"></a>00416 <span class="comment"> */</span>
<a name="l00417"></a><a class="code" href="group__cache.html#ga2fd14cd1dc39ee624c518e15dfe61f82">00417</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#ga2fd14cd1dc39ee624c518e15dfe61f82" title="Request a full dump from the kernel to fill a cache.">nl_cache_request_full_dump</a>(<span class="keyword">struct</span> nl_handle *handle, <span class="keyword">struct</span> nl_cache *cache)
<a name="l00418"></a>00418 {
<a name="l00419"></a>00419 NL_DBG(2, <span class="stringliteral">"Requesting dump from kernel for cache %p <%s>...\n"</span>,
<a name="l00420"></a>00420 cache, nl_cache_name(cache));
<a name="l00421"></a>00421
<a name="l00422"></a>00422 <span class="keywordflow">if</span> (cache->c_ops->co_request_update == NULL)
<a name="l00423"></a>00423 <span class="keywordflow">return</span> nl_error(EOPNOTSUPP, <span class="stringliteral">"Operation not supported"</span>);
<a name="l00424"></a>00424
<a name="l00425"></a>00425 <span class="keywordflow">return</span> cache->c_ops->co_request_update(cache, handle);
<a name="l00426"></a>00426 }
<a name="l00427"></a>00427 <span class="comment"></span>
<a name="l00428"></a>00428 <span class="comment">/** @cond SKIP */</span>
<a name="l00429"></a>00429 <span class="keyword">struct </span>update_xdata {
<a name="l00430"></a>00430 <span class="keyword">struct </span><a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops;
<a name="l00431"></a>00431 <span class="keyword">struct </span><a class="code" href="structnl__parser__param.html">nl_parser_param</a> *params;
<a name="l00432"></a>00432 };
<a name="l00433"></a>00433
<a name="l00434"></a>00434 <span class="keyword">static</span> <span class="keywordtype">int</span> update_msg_parser(<span class="keyword">struct</span> nl_msg *msg, <span class="keywordtype">void</span> *arg)
<a name="l00435"></a>00435 {
<a name="l00436"></a>00436 <span class="keyword">struct </span>update_xdata *x = arg;
<a name="l00437"></a>00437
<a name="l00438"></a>00438 <span class="keywordflow">return</span> nl_cache_parse(x->ops, &msg->nm_src, msg->nm_nlh, x->params);
<a name="l00439"></a>00439 }<span class="comment"></span>
<a name="l00440"></a>00440 <span class="comment">/** @endcond */</span>
<a name="l00441"></a>00441
<a name="l00442"></a>00442 <span class="keywordtype">int</span> __cache_pickup(<span class="keyword">struct</span> nl_handle *handle, <span class="keyword">struct</span> nl_cache *cache,
<a name="l00443"></a>00443 <span class="keyword">struct</span> <a class="code" href="structnl__parser__param.html">nl_parser_param</a> *param)
<a name="l00444"></a>00444 {
<a name="l00445"></a>00445 <span class="keywordtype">int</span> err;
<a name="l00446"></a>00446 <span class="keyword">struct </span>nl_cb *cb;
<a name="l00447"></a>00447 <span class="keyword">struct </span>update_xdata x = {
<a name="l00448"></a>00448 .ops = cache->c_ops,
<a name="l00449"></a>00449 .params = param,
<a name="l00450"></a>00450 };
<a name="l00451"></a>00451
<a name="l00452"></a>00452 NL_DBG(1, <span class="stringliteral">"Picking up answer for cache %p <%s>...\n"</span>,
<a name="l00453"></a>00453 cache, nl_cache_name(cache));
<a name="l00454"></a>00454
<a name="l00455"></a>00455 cb = <a class="code" href="group__cb.html#gad438f32bb0f83bd1d15f53e9525f1f65" title="Clone an existing callback handle.">nl_cb_clone</a>(handle->h_cb);
<a name="l00456"></a>00456 <span class="keywordflow">if</span> (cb == NULL)
<a name="l00457"></a>00457 <span class="keywordflow">return</span> nl_get_errno();
<a name="l00458"></a>00458
<a name="l00459"></a>00459 <a class="code" href="group__cb.html#gabe7b2516f28fbb8bb9c5b1ea2dfaf1d3" title="Set up a callback.">nl_cb_set</a>(cb, <a class="code" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a6e1f371d16186a460f25ea9bb1306c47" title="Message is valid.">NL_CB_VALID</a>, <a class="code" href="group__cb.html#ggaba3fabad0c62db483941101e1a18d14da22448271a402b4c4a55733ef4884c038" title="Customized handler specified by the user.">NL_CB_CUSTOM</a>, update_msg_parser, &x);
<a name="l00460"></a>00460
<a name="l00461"></a>00461 err = <a class="code" href="group__nl.html#ga1bb066e1772b89f79fe1d76a4ef243a6" title="Receive a set of messages from a netlink socket.">nl_recvmsgs</a>(handle, cb);
<a name="l00462"></a>00462 <span class="keywordflow">if</span> (err < 0)
<a name="l00463"></a>00463 NL_DBG(2, <span class="stringliteral">"While picking up for %p <%s>, recvmsgs() returned "</span> \
<a name="l00464"></a>00464 <span class="stringliteral">"%d: %s"</span>, cache, nl_cache_name(cache),
<a name="l00465"></a>00465 err, <a class="code" href="group__utils.html#ga4586cbc3086399f08e42708098ea2045" title="Return error message for an error code.">nl_geterror</a>());
<a name="l00466"></a>00466
<a name="l00467"></a>00467 nl_cb_put(cb);
<a name="l00468"></a>00468
<a name="l00469"></a>00469 <span class="keywordflow">return</span> err;
<a name="l00470"></a>00470 }
<a name="l00471"></a>00471
<a name="l00472"></a>00472 <span class="keyword">static</span> <span class="keywordtype">int</span> pickup_cb(<span class="keyword">struct</span> nl_object *c, <span class="keyword">struct</span> <a class="code" href="structnl__parser__param.html">nl_parser_param</a> *p)
<a name="l00473"></a>00473 {
<a name="l00474"></a>00474 <span class="keywordflow">return</span> <a class="code" href="group__cache.html#ga5edfe88c7223702e3fbb909584bd87db" title="Add object to a cache.">nl_cache_add</a>((<span class="keyword">struct</span> nl_cache *) p->pp_arg, c);
<a name="l00475"></a>00475 }
<a name="l00476"></a>00476 <span class="comment"></span>
<a name="l00477"></a>00477 <span class="comment">/**</span>
<a name="l00478"></a>00478 <span class="comment"> * Pickup a netlink dump response and put it into a cache.</span>
<a name="l00479"></a>00479 <span class="comment"> * @arg handle Netlink handle.</span>
<a name="l00480"></a>00480 <span class="comment"> * @arg cache Cache to put items into.</span>
<a name="l00481"></a>00481 <span class="comment"> *</span>
<a name="l00482"></a>00482 <span class="comment"> * Waits for netlink messages to arrive, parses them and puts them into</span>
<a name="l00483"></a>00483 <span class="comment"> * the specified cache.</span>
<a name="l00484"></a>00484 <span class="comment"> *</span>
<a name="l00485"></a>00485 <span class="comment"> * @return 0 on success or a negative error code.</span>
<a name="l00486"></a>00486 <span class="comment"> */</span>
<a name="l00487"></a><a class="code" href="group__cache.html#gae9ee72b56b5d3e215403105c858b9479">00487</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#gae9ee72b56b5d3e215403105c858b9479" title="Pickup a netlink dump response and put it into a cache.">nl_cache_pickup</a>(<span class="keyword">struct</span> nl_handle *handle, <span class="keyword">struct</span> nl_cache *cache)
<a name="l00488"></a>00488 {
<a name="l00489"></a>00489 <span class="keyword">struct </span><a class="code" href="structnl__parser__param.html">nl_parser_param</a> p = {
<a name="l00490"></a>00490 .pp_cb = pickup_cb,
<a name="l00491"></a>00491 .pp_arg = cache,
<a name="l00492"></a>00492 };
<a name="l00493"></a>00493
<a name="l00494"></a>00494 <span class="keywordflow">return</span> __cache_pickup(handle, cache, &p);
<a name="l00495"></a>00495 }
<a name="l00496"></a>00496
<a name="l00497"></a>00497 <span class="keyword">static</span> <span class="keywordtype">int</span> cache_include(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_object *obj,
<a name="l00498"></a>00498 <span class="keyword">struct</span> <a class="code" href="structnl__msgtype.html" title="Message type to cache action association.">nl_msgtype</a> *type, change_func_t cb)
<a name="l00499"></a>00499 {
<a name="l00500"></a>00500 <span class="keyword">struct </span>nl_object *old;
<a name="l00501"></a>00501
<a name="l00502"></a>00502 <span class="keywordflow">switch</span> (type-><a class="code" href="structnl__msgtype.html#a5d312dd2e16f5ef1301e9e59c9e14965" title="Cache action to take.">mt_act</a>) {
<a name="l00503"></a>00503 <span class="keywordflow">case</span> NL_ACT_NEW:
<a name="l00504"></a>00504 <span class="keywordflow">case</span> NL_ACT_DEL:
<a name="l00505"></a>00505 old = <a class="code" href="group__cache.html#ga746f17a6442477f1dbd6513de884000a" title="Search for an object in a cache.">nl_cache_search</a>(cache, obj);
<a name="l00506"></a>00506 <span class="keywordflow">if</span> (old) {
<a name="l00507"></a>00507 <a class="code" href="group__cache.html#ga8d1f1d2c3b355a7f129d9cd6f7da2b52" title="Removes an object from a cache.">nl_cache_remove</a>(old);
<a name="l00508"></a>00508 <span class="keywordflow">if</span> (type-><a class="code" href="structnl__msgtype.html#a5d312dd2e16f5ef1301e9e59c9e14965" title="Cache action to take.">mt_act</a> == NL_ACT_DEL) {
<a name="l00509"></a>00509 <span class="keywordflow">if</span> (cb)
<a name="l00510"></a>00510 cb(cache, old, NL_ACT_DEL);
<a name="l00511"></a>00511 <a class="code" href="group__object.html#ga9905da094bf4c03cf4ac78aeaa86a12b" title="Release a reference from an object.">nl_object_put</a>(old);
<a name="l00512"></a>00512 }
<a name="l00513"></a>00513 }
<a name="l00514"></a>00514
<a name="l00515"></a>00515 <span class="keywordflow">if</span> (type-><a class="code" href="structnl__msgtype.html#a5d312dd2e16f5ef1301e9e59c9e14965" title="Cache action to take.">mt_act</a> == NL_ACT_NEW) {
<a name="l00516"></a>00516 <a class="code" href="group__cache.html#gaf4b615bcbd1fb764bcb01c980a7ed3c4" title="Move object from one cache to another.">nl_cache_move</a>(cache, obj);
<a name="l00517"></a>00517 <span class="keywordflow">if</span> (old == NULL && cb)
<a name="l00518"></a>00518 cb(cache, obj, NL_ACT_NEW);
<a name="l00519"></a>00519 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (old) {
<a name="l00520"></a>00520 <span class="keywordflow">if</span> (<a class="code" href="group__object.html#ga0ee9c6a43d27a40ef64e964184576aeb" title="Compute bitmask representing difference in attribute values.">nl_object_diff</a>(old, obj) && cb)
<a name="l00521"></a>00521 cb(cache, obj, NL_ACT_CHANGE);
<a name="l00522"></a>00522
<a name="l00523"></a>00523 <a class="code" href="group__object.html#ga9905da094bf4c03cf4ac78aeaa86a12b" title="Release a reference from an object.">nl_object_put</a>(old);
<a name="l00524"></a>00524 }
<a name="l00525"></a>00525 }
<a name="l00526"></a>00526 <span class="keywordflow">break</span>;
<a name="l00527"></a>00527 <span class="keywordflow">default</span>:
<a name="l00528"></a>00528 NL_DBG(2, <span class="stringliteral">"Unknown action associated to object %p\n"</span>, obj);
<a name="l00529"></a>00529 <span class="keywordflow">return</span> 0;
<a name="l00530"></a>00530 }
<a name="l00531"></a>00531
<a name="l00532"></a>00532 <span class="keywordflow">return</span> 0;
<a name="l00533"></a>00533 }
<a name="l00534"></a>00534
<a name="l00535"></a>00535 <span class="keywordtype">int</span> nl_cache_include(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_object *obj,
<a name="l00536"></a>00536 change_func_t change_cb)
<a name="l00537"></a>00537 {
<a name="l00538"></a>00538 <span class="keyword">struct </span><a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops = cache->c_ops;
<a name="l00539"></a>00539 <span class="keywordtype">int</span> i;
<a name="l00540"></a>00540
<a name="l00541"></a>00541 <span class="keywordflow">if</span> (ops->co_obj_ops != obj->ce_ops)
<a name="l00542"></a>00542 <span class="keywordflow">return</span> nl_error(EINVAL, <span class="stringliteral">"Object mismatches cache type"</span>);
<a name="l00543"></a>00543
<a name="l00544"></a>00544 <span class="keywordflow">for</span> (i = 0; ops->co_msgtypes[i].<a class="code" href="structnl__msgtype.html#a2b51527c3258ef4231b84d856a7c4164" title="Netlink message type.">mt_id</a> >= 0; i++)
<a name="l00545"></a>00545 <span class="keywordflow">if</span> (ops->co_msgtypes[i].<a class="code" href="structnl__msgtype.html#a2b51527c3258ef4231b84d856a7c4164" title="Netlink message type.">mt_id</a> == obj->ce_msgtype)
<a name="l00546"></a>00546 <span class="keywordflow">return</span> cache_include(cache, obj, &ops->co_msgtypes[i],
<a name="l00547"></a>00547 change_cb);
<a name="l00548"></a>00548
<a name="l00549"></a>00549 <span class="keywordflow">return</span> nl_errno(EINVAL);
<a name="l00550"></a>00550 }
<a name="l00551"></a>00551
<a name="l00552"></a>00552 <span class="keyword">static</span> <span class="keywordtype">int</span> resync_cb(<span class="keyword">struct</span> nl_object *c, <span class="keyword">struct</span> <a class="code" href="structnl__parser__param.html">nl_parser_param</a> *p)
<a name="l00553"></a>00553 {
<a name="l00554"></a>00554 <span class="keyword">struct </span>nl_cache_assoc *ca = p->pp_arg;
<a name="l00555"></a>00555
<a name="l00556"></a>00556 <span class="keywordflow">return</span> nl_cache_include(ca->ca_cache, c, ca->ca_change);
<a name="l00557"></a>00557 }
<a name="l00558"></a>00558
<a name="l00559"></a>00559 <span class="keywordtype">int</span> nl_cache_resync(<span class="keyword">struct</span> nl_handle *handle, <span class="keyword">struct</span> nl_cache *cache,
<a name="l00560"></a>00560 change_func_t change_cb)
<a name="l00561"></a>00561 {
<a name="l00562"></a>00562 <span class="keyword">struct </span>nl_object *obj, *next;
<a name="l00563"></a>00563 <span class="keyword">struct </span>nl_cache_assoc ca = {
<a name="l00564"></a>00564 .ca_cache = cache,
<a name="l00565"></a>00565 .ca_change = change_cb,
<a name="l00566"></a>00566 };
<a name="l00567"></a>00567 <span class="keyword">struct </span><a class="code" href="structnl__parser__param.html">nl_parser_param</a> p = {
<a name="l00568"></a>00568 .pp_cb = resync_cb,
<a name="l00569"></a>00569 .pp_arg = &ca,
<a name="l00570"></a>00570 };
<a name="l00571"></a>00571 <span class="keywordtype">int</span> err;
<a name="l00572"></a>00572
<a name="l00573"></a>00573 NL_DBG(1, <span class="stringliteral">"Resyncing cache %p <%s>...\n"</span>, cache, nl_cache_name(cache));
<a name="l00574"></a>00574
<a name="l00575"></a>00575 <span class="comment">/* Mark all objects so we can see if some of them are obsolete */</span>
<a name="l00576"></a>00576 <a class="code" href="group__cache.html#gaf72b8b81e5b84440bb7534c8cd00b9d2" title="Mark all objects in a cache.">nl_cache_mark_all</a>(cache);
<a name="l00577"></a>00577
<a name="l00578"></a>00578 err = <a class="code" href="group__cache.html#ga2fd14cd1dc39ee624c518e15dfe61f82" title="Request a full dump from the kernel to fill a cache.">nl_cache_request_full_dump</a>(handle, cache);
<a name="l00579"></a>00579 <span class="keywordflow">if</span> (err < 0)
<a name="l00580"></a>00580 <span class="keywordflow">goto</span> errout;
<a name="l00581"></a>00581
<a name="l00582"></a>00582 err = __cache_pickup(handle, cache, &p);
<a name="l00583"></a>00583 <span class="keywordflow">if</span> (err < 0)
<a name="l00584"></a>00584 <span class="keywordflow">goto</span> errout;
<a name="l00585"></a>00585
<a name="l00586"></a>00586 nl_list_for_each_entry_safe(obj, next, &cache->c_items, ce_list)
<a name="l00587"></a>00587 if (<a class="code" href="group__object.html#gad4e3c7a399395cc2f8d5ea61138484e5" title="Return true if object is marked.">nl_object_is_marked</a>(obj))
<a name="l00588"></a>00588 <a class="code" href="group__cache.html#ga8d1f1d2c3b355a7f129d9cd6f7da2b52" title="Removes an object from a cache.">nl_cache_remove</a>(obj);
<a name="l00589"></a>00589
<a name="l00590"></a>00590 NL_DBG(1, "Finished resyncing %p <%s>\n", cache, nl_cache_name(cache));
<a name="l00591"></a>00591
<a name="l00592"></a>00592 err = 0;
<a name="l00593"></a>00593 errout:
<a name="l00594"></a>00594 return err;
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596 <span class="comment"></span>
<a name="l00597"></a>00597 <span class="comment">/** @} */</span>
<a name="l00598"></a>00598 <span class="comment"></span>
<a name="l00599"></a>00599 <span class="comment">/**</span>
<a name="l00600"></a>00600 <span class="comment"> * @name Parsing</span>
<a name="l00601"></a>00601 <span class="comment"> * @{</span>
<a name="l00602"></a>00602 <span class="comment"> */</span>
<a name="l00603"></a>00603 <span class="comment"></span>
<a name="l00604"></a>00604 <span class="comment">/** @cond SKIP */</span>
<a name="l00605"></a>00605 <span class="keywordtype">int</span> nl_cache_parse(struct <a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops, struct <a class="code" href="structsockaddr__nl.html" title="Netlink socket address.">sockaddr_nl</a> *who,
<a name="l00606"></a>00606 struct <a class="code" href="structnlmsghdr.html" title="Netlink message header.">nlmsghdr</a> *nlh, struct <a class="code" href="structnl__parser__param.html">nl_parser_param</a> *params)
<a name="l00607"></a>00607 {
<a name="l00608"></a>00608 <span class="keywordtype">int</span> i, err;
<a name="l00609"></a>00609
<a name="l00610"></a>00610 <span class="keywordflow">if</span> (!nlmsg_valid_hdr(nlh, ops->co_hdrsize)) {
<a name="l00611"></a>00611 err = nl_error(EINVAL, <span class="stringliteral">"netlink message too short to be "</span>
<a name="l00612"></a>00612 <span class="stringliteral">"of kind %s"</span>, ops->co_name);
<a name="l00613"></a>00613 <span class="keywordflow">goto</span> errout;
<a name="l00614"></a>00614 }
<a name="l00615"></a>00615
<a name="l00616"></a>00616 <span class="keywordflow">for</span> (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++) {
<a name="l00617"></a>00617 <span class="keywordflow">if</span> (ops->co_msgtypes[i].mt_id == nlh->nlmsg_type) {
<a name="l00618"></a>00618 err = ops->co_msg_parser(ops, who, nlh, params);
<a name="l00619"></a>00619 <span class="keywordflow">if</span> (err != -ENOENT)
<a name="l00620"></a>00620 <span class="keywordflow">goto</span> errout;
<a name="l00621"></a>00621 }
<a name="l00622"></a>00622 }
<a name="l00623"></a>00623
<a name="l00624"></a>00624
<a name="l00625"></a>00625 err = nl_error(EINVAL, <span class="stringliteral">"Unsupported netlink message type %d"</span>,
<a name="l00626"></a>00626 nlh->nlmsg_type);
<a name="l00627"></a>00627 errout:
<a name="l00628"></a>00628 <span class="keywordflow">return</span> err;
<a name="l00629"></a>00629 }<span class="comment"></span>
<a name="l00630"></a>00630 <span class="comment">/** @endcond */</span>
<a name="l00631"></a>00631 <span class="comment"></span>
<a name="l00632"></a>00632 <span class="comment">/**</span>
<a name="l00633"></a>00633 <span class="comment"> * Parse a netlink message and add it to the cache.</span>
<a name="l00634"></a>00634 <span class="comment"> * @arg cache cache to add element to</span>
<a name="l00635"></a>00635 <span class="comment"> * @arg msg netlink message</span>
<a name="l00636"></a>00636 <span class="comment"> *</span>
<a name="l00637"></a>00637 <span class="comment"> * Parses a netlink message by calling the cache specific message parser</span>
<a name="l00638"></a>00638 <span class="comment"> * and adds the new element to the cache.</span>
<a name="l00639"></a>00639 <span class="comment"> *</span>
<a name="l00640"></a>00640 <span class="comment"> * @return 0 or a negative error code.</span>
<a name="l00641"></a>00641 <span class="comment"> */</span>
<a name="l00642"></a><a class="code" href="group__cache.html#ga6fb98385ab2fb543b1720ce84ab559db">00642</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#ga6fb98385ab2fb543b1720ce84ab559db" title="Parse a netlink message and add it to the cache.">nl_cache_parse_and_add</a>(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_msg *msg)
<a name="l00643"></a>00643 {
<a name="l00644"></a>00644 <span class="keyword">struct </span><a class="code" href="structnl__parser__param.html">nl_parser_param</a> p = {
<a name="l00645"></a>00645 .pp_cb = pickup_cb,
<a name="l00646"></a>00646 .pp_arg = cache,
<a name="l00647"></a>00647 };
<a name="l00648"></a>00648
<a name="l00649"></a>00649 <span class="keywordflow">return</span> nl_cache_parse(cache->c_ops, NULL, <a class="code" href="group__msg.html#gaa5f29579d86d2bdab26c312b44b56de7" title="Return actual netlink message.">nlmsg_hdr</a>(msg), &p);
<a name="l00650"></a>00650 }
<a name="l00651"></a>00651 <span class="comment"></span>
<a name="l00652"></a>00652 <span class="comment">/**</span>
<a name="l00653"></a>00653 <span class="comment"> * (Re)fill a cache with the contents in the kernel.</span>
<a name="l00654"></a>00654 <span class="comment"> * @arg handle netlink handle</span>
<a name="l00655"></a>00655 <span class="comment"> * @arg cache cache to update</span>
<a name="l00656"></a>00656 <span class="comment"> *</span>
<a name="l00657"></a>00657 <span class="comment"> * Clears the specified cache and fills it with the current state in</span>
<a name="l00658"></a>00658 <span class="comment"> * the kernel.</span>
<a name="l00659"></a>00659 <span class="comment"> *</span>
<a name="l00660"></a>00660 <span class="comment"> * @return 0 or a negative error code.</span>
<a name="l00661"></a>00661 <span class="comment"> */</span>
<a name="l00662"></a><a class="code" href="group__cache.html#gaf5bd584017847e6ef69ec36739a6aaf0">00662</a> <span class="keywordtype">int</span> <a class="code" href="group__cache.html#gaf5bd584017847e6ef69ec36739a6aaf0" title="(Re)fill a cache with the contents in the kernel.">nl_cache_refill</a>(<span class="keyword">struct</span> nl_handle *handle, <span class="keyword">struct</span> nl_cache *cache)
<a name="l00663"></a>00663 {
<a name="l00664"></a>00664 <span class="keywordtype">int</span> err;
<a name="l00665"></a>00665
<a name="l00666"></a>00666 err = <a class="code" href="group__cache.html#ga2fd14cd1dc39ee624c518e15dfe61f82" title="Request a full dump from the kernel to fill a cache.">nl_cache_request_full_dump</a>(handle, cache);
<a name="l00667"></a>00667 <span class="keywordflow">if</span> (err < 0)
<a name="l00668"></a>00668 <span class="keywordflow">return</span> err;
<a name="l00669"></a>00669
<a name="l00670"></a>00670 NL_DBG(2, <span class="stringliteral">"Upading cache %p <%s>, request sent, waiting for dump...\n"</span>,
<a name="l00671"></a>00671 cache, nl_cache_name(cache));
<a name="l00672"></a>00672 <a class="code" href="group__cache.html#gad22be4bd392afc8daca60a80f24a277b" title="Clear a cache.">nl_cache_clear</a>(cache);
<a name="l00673"></a>00673
<a name="l00674"></a>00674 <span class="keywordflow">return</span> <a class="code" href="group__cache.html#gae9ee72b56b5d3e215403105c858b9479" title="Pickup a netlink dump response and put it into a cache.">nl_cache_pickup</a>(handle, cache);
<a name="l00675"></a>00675 }
<a name="l00676"></a>00676 <span class="comment"></span>
<a name="l00677"></a>00677 <span class="comment">/** @} */</span>
<a name="l00678"></a>00678 <span class="comment"></span>
<a name="l00679"></a>00679 <span class="comment">/**</span>
<a name="l00680"></a>00680 <span class="comment"> * @name Utillities</span>
<a name="l00681"></a>00681 <span class="comment"> * @{</span>
<a name="l00682"></a>00682 <span class="comment"> */</span>
<a name="l00683"></a>00683 <span class="comment"></span>
<a name="l00684"></a>00684 <span class="comment">/**</span>
<a name="l00685"></a>00685 <span class="comment"> * Mark all objects in a cache</span>
<a name="l00686"></a>00686 <span class="comment"> * @arg cache Cache to mark all objects in</span>
<a name="l00687"></a>00687 <span class="comment"> */</span>
<a name="l00688"></a><a class="code" href="group__cache.html#gaf72b8b81e5b84440bb7534c8cd00b9d2">00688</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#gaf72b8b81e5b84440bb7534c8cd00b9d2" title="Mark all objects in a cache.">nl_cache_mark_all</a>(<span class="keyword">struct</span> nl_cache *cache)
<a name="l00689"></a>00689 {
<a name="l00690"></a>00690 <span class="keyword">struct </span>nl_object *obj;
<a name="l00691"></a>00691
<a name="l00692"></a>00692 NL_DBG(2, <span class="stringliteral">"Marking all objects in cache %p <%s>...\n"</span>,
<a name="l00693"></a>00693 cache, nl_cache_name(cache));
<a name="l00694"></a>00694
<a name="l00695"></a>00695 nl_list_for_each_entry(obj, &cache->c_items, ce_list)
<a name="l00696"></a>00696 <a class="code" href="group__object.html#gadbc633bb8ae194050473818e0484613d" title="Add mark to object.">nl_object_mark</a>(obj);
<a name="l00697"></a>00697 }
<a name="l00698"></a>00698 <span class="comment"></span>
<a name="l00699"></a>00699 <span class="comment">/** @} */</span>
<a name="l00700"></a>00700 <span class="comment"></span>
<a name="l00701"></a>00701 <span class="comment">/**</span>
<a name="l00702"></a>00702 <span class="comment"> * @name Dumping</span>
<a name="l00703"></a>00703 <span class="comment"> * @{</span>
<a name="l00704"></a>00704 <span class="comment"> */</span>
<a name="l00705"></a>00705 <span class="comment"></span>
<a name="l00706"></a>00706 <span class="comment">/**</span>
<a name="l00707"></a>00707 <span class="comment"> * Dump all elements of a cache.</span>
<a name="l00708"></a>00708 <span class="comment"> * @arg cache cache to dump</span>
<a name="l00709"></a>00709 <span class="comment"> * @arg params dumping parameters</span>
<a name="l00710"></a>00710 <span class="comment"> *</span>
<a name="l00711"></a>00711 <span class="comment"> * Dumps all elements of the \a cache to the file descriptor \a fd.</span>
<a name="l00712"></a>00712 <span class="comment"> */</span>
<a name="l00713"></a><a class="code" href="group__cache.html#ga8e7a06ddf0139ee1c9304721793772d1">00713</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#ga8e7a06ddf0139ee1c9304721793772d1" title="Dump all elements of a cache.">nl_cache_dump</a>(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> <a class="code" href="structnl__dump__params.html" title="Dumping parameters.">nl_dump_params</a> *params)
<a name="l00714"></a>00714 {
<a name="l00715"></a>00715 <a class="code" href="group__cache.html#ga5d7082fb0e848926ef73bd531187d50f" title="Dump all elements of a cache (filtered).">nl_cache_dump_filter</a>(cache, params, NULL);
<a name="l00716"></a>00716 }
<a name="l00717"></a>00717 <span class="comment"></span>
<a name="l00718"></a>00718 <span class="comment">/**</span>
<a name="l00719"></a>00719 <span class="comment"> * Dump all elements of a cache (filtered).</span>
<a name="l00720"></a>00720 <span class="comment"> * @arg cache cache to dump</span>
<a name="l00721"></a>00721 <span class="comment"> * @arg params dumping parameters (optional)</span>
<a name="l00722"></a>00722 <span class="comment"> * @arg filter filter object</span>
<a name="l00723"></a>00723 <span class="comment"> *</span>
<a name="l00724"></a>00724 <span class="comment"> * Dumps all elements of the \a cache to the file descriptor \a fd</span>
<a name="l00725"></a>00725 <span class="comment"> * given they match the given filter \a filter.</span>
<a name="l00726"></a>00726 <span class="comment"> */</span>
<a name="l00727"></a><a class="code" href="group__cache.html#ga5d7082fb0e848926ef73bd531187d50f">00727</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#ga5d7082fb0e848926ef73bd531187d50f" title="Dump all elements of a cache (filtered).">nl_cache_dump_filter</a>(<span class="keyword">struct</span> nl_cache *cache,
<a name="l00728"></a>00728 <span class="keyword">struct</span> <a class="code" href="structnl__dump__params.html" title="Dumping parameters.">nl_dump_params</a> *params,
<a name="l00729"></a>00729 <span class="keyword">struct</span> nl_object *filter)
<a name="l00730"></a>00730 {
<a name="l00731"></a>00731 <span class="keywordtype">int</span> type = params ? params-><a class="code" href="structnl__dump__params.html#ae36d840078202bf028a6611d2e1f4ea5" title="Specifies the type of dump that is requested.">dp_type</a> : <a class="code" href="group__utils.html#ggacfb5566c73f0965c5241d7d49bc717e9a1445106c7af529b2c99ee289fbcd3179" title="Dump all attributes but no statistics.">NL_DUMP_FULL</a>;
<a name="l00732"></a>00732 <span class="keyword">struct </span><a class="code" href="structnl__object__ops.html" title="Object Operations.">nl_object_ops</a> *ops;
<a name="l00733"></a>00733 <span class="keyword">struct </span>nl_object *obj;
<a name="l00734"></a>00734
<a name="l00735"></a>00735 NL_DBG(2, <span class="stringliteral">"Dumping cache %p <%s> filter %p\n"</span>,
<a name="l00736"></a>00736 cache, nl_cache_name(cache), filter);
<a name="l00737"></a>00737
<a name="l00738"></a>00738 <span class="keywordflow">if</span> (type > NL_DUMP_MAX || type < 0)
<a name="l00739"></a>00739 BUG();
<a name="l00740"></a>00740
<a name="l00741"></a>00741 <span class="keywordflow">if</span> (cache->c_ops == NULL)
<a name="l00742"></a>00742 BUG();
<a name="l00743"></a>00743
<a name="l00744"></a>00744 ops = cache->c_ops->co_obj_ops;
<a name="l00745"></a>00745 <span class="keywordflow">if</span> (!ops-><a class="code" href="structnl__object__ops.html#a0a3d28af43d7f75cda0b8cbc23ad7432" title="Dumping functions.">oo_dump</a>[type])
<a name="l00746"></a>00746 <span class="keywordflow">return</span>;
<a name="l00747"></a>00747
<a name="l00748"></a>00748 nl_list_for_each_entry(obj, &cache->c_items, ce_list) {
<a name="l00749"></a>00749 <span class="keywordflow">if</span> (filter && !<a class="code" href="group__object.html#gad4d9124deaff34511d03f3b73fef040c" title="Match a filter against an object.">nl_object_match_filter</a>(obj, filter))
<a name="l00750"></a>00750 <span class="keywordflow">continue</span>;
<a name="l00751"></a>00751
<a name="l00752"></a>00752 NL_DBG(4, <span class="stringliteral">"Dumping object %p...\n"</span>, obj);
<a name="l00753"></a>00753 dump_from_ops(obj, params);
<a name="l00754"></a>00754 }
<a name="l00755"></a>00755 }
<a name="l00756"></a>00756 <span class="comment"></span>
<a name="l00757"></a>00757 <span class="comment">/** @} */</span>
<a name="l00758"></a>00758 <span class="comment"></span>
<a name="l00759"></a>00759 <span class="comment">/**</span>
<a name="l00760"></a>00760 <span class="comment"> * @name Iterators</span>
<a name="l00761"></a>00761 <span class="comment"> * @{</span>
<a name="l00762"></a>00762 <span class="comment"> */</span>
<a name="l00763"></a>00763 <span class="comment"></span>
<a name="l00764"></a>00764 <span class="comment">/**</span>
<a name="l00765"></a>00765 <span class="comment"> * Call a callback on each element of the cache.</span>
<a name="l00766"></a>00766 <span class="comment"> * @arg cache cache to iterate on</span>
<a name="l00767"></a>00767 <span class="comment"> * @arg cb callback function</span>
<a name="l00768"></a>00768 <span class="comment"> * @arg arg argument passed to callback function</span>
<a name="l00769"></a>00769 <span class="comment"> *</span>
<a name="l00770"></a>00770 <span class="comment"> * Calls a callback function \a cb on each element of the \a cache.</span>
<a name="l00771"></a>00771 <span class="comment"> * The argument \a arg is passed on the callback function.</span>
<a name="l00772"></a>00772 <span class="comment"> */</span>
<a name="l00773"></a><a class="code" href="group__cache.html#ga3a0cdf3c64b41a601ee693abea8b9a17">00773</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#ga3a0cdf3c64b41a601ee693abea8b9a17" title="Call a callback on each element of the cache.">nl_cache_foreach</a>(<span class="keyword">struct</span> nl_cache *cache,
<a name="l00774"></a>00774 <span class="keywordtype">void</span> (*cb)(<span class="keyword">struct</span> nl_object *, <span class="keywordtype">void</span> *), <span class="keywordtype">void</span> *arg)
<a name="l00775"></a>00775 {
<a name="l00776"></a>00776 <a class="code" href="group__cache.html#ga5f0cc9367329f85137b2191c2889d41c" title="Call a callback on each element of the cache (filtered).">nl_cache_foreach_filter</a>(cache, NULL, cb, arg);
<a name="l00777"></a>00777 }
<a name="l00778"></a>00778 <span class="comment"></span>
<a name="l00779"></a>00779 <span class="comment">/**</span>
<a name="l00780"></a>00780 <span class="comment"> * Call a callback on each element of the cache (filtered).</span>
<a name="l00781"></a>00781 <span class="comment"> * @arg cache cache to iterate on</span>
<a name="l00782"></a>00782 <span class="comment"> * @arg filter filter object</span>
<a name="l00783"></a>00783 <span class="comment"> * @arg cb callback function</span>
<a name="l00784"></a>00784 <span class="comment"> * @arg arg argument passed to callback function</span>
<a name="l00785"></a>00785 <span class="comment"> *</span>
<a name="l00786"></a>00786 <span class="comment"> * Calls a callback function \a cb on each element of the \a cache</span>
<a name="l00787"></a>00787 <span class="comment"> * that matches the \a filter. The argument \a arg is passed on</span>
<a name="l00788"></a>00788 <span class="comment"> * to the callback function.</span>
<a name="l00789"></a>00789 <span class="comment"> */</span>
<a name="l00790"></a><a class="code" href="group__cache.html#ga5f0cc9367329f85137b2191c2889d41c">00790</a> <span class="keywordtype">void</span> <a class="code" href="group__cache.html#ga5f0cc9367329f85137b2191c2889d41c" title="Call a callback on each element of the cache (filtered).">nl_cache_foreach_filter</a>(<span class="keyword">struct</span> nl_cache *cache, <span class="keyword">struct</span> nl_object *filter,
<a name="l00791"></a>00791 <span class="keywordtype">void</span> (*cb)(<span class="keyword">struct</span> nl_object *, <span class="keywordtype">void</span> *), <span class="keywordtype">void</span> *arg)
<a name="l00792"></a>00792 {
<a name="l00793"></a>00793 <span class="keyword">struct </span>nl_object *obj, *tmp;
<a name="l00794"></a>00794 <span class="keyword">struct </span><a class="code" href="structnl__object__ops.html" title="Object Operations.">nl_object_ops</a> *ops;
<a name="l00795"></a>00795
<a name="l00796"></a>00796 <span class="keywordflow">if</span> (cache->c_ops == NULL)
<a name="l00797"></a>00797 BUG();
<a name="l00798"></a>00798
<a name="l00799"></a>00799 ops = cache->c_ops->co_obj_ops;
<a name="l00800"></a>00800
<a name="l00801"></a>00801 nl_list_for_each_entry_safe(obj, tmp, &cache->c_items, ce_list) {
<a name="l00802"></a>00802 <span class="keywordflow">if</span> (filter && !<a class="code" href="group__object.html#gad4d9124deaff34511d03f3b73fef040c" title="Match a filter against an object.">nl_object_match_filter</a>(obj, filter))
<a name="l00803"></a>00803 <span class="keywordflow">continue</span>;
<a name="l00804"></a>00804
<a name="l00805"></a>00805 cb(obj, arg);
<a name="l00806"></a>00806 }
<a name="l00807"></a>00807 }
<a name="l00808"></a>00808 <span class="comment"></span>
<a name="l00809"></a>00809 <span class="comment">/** @} */</span>
<a name="l00810"></a>00810 <span class="comment"></span>
<a name="l00811"></a>00811 <span class="comment">/** @} */</span>
</pre></div></div>
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