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<div id="projectname">libaaruformat<span id="projectnumber">&#160;1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<a href="lru_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Created by claunia on 2/10/22.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span> </div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#ifndef LIBAARUFORMAT_LRU_H</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#define LIBAARUFORMAT_LRU_H</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &lt;uthash.h&gt;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span></div>
<div class="foldopen" id="foldopen00026" data-start="{" data-end="};">
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"><a class="line" href="structCacheEntry.html"> 26</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structCacheEntry.html">CacheEntry</a></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span>{</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"><a class="line" href="structCacheEntry.html#aeb007cfa604b485f120ec1f7526c95f4"> 28</a></span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="structCacheEntry.html#aeb007cfa604b485f120ec1f7526c95f4">key</a>; </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"><a class="line" href="structCacheEntry.html#a7d6d1ed0aab03cffbb34aff16f6f3d56"> 29</a></span> <span class="keywordtype">void</span> *<a class="code hl_variable" href="structCacheEntry.html#a7d6d1ed0aab03cffbb34aff16f6f3d56">value</a>; </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"><a class="line" href="structCacheEntry.html#ae7e5f03fa52b88d99e27e2433623b4f5"> 30</a></span> UT_hash_handle <a class="code hl_variable" href="structCacheEntry.html#ae7e5f03fa52b88d99e27e2433623b4f5">hh</a>; </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span>};</div>
</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span></div>
<div class="foldopen" id="foldopen00045" data-start="{" data-end="};">
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="structCacheHeader.html"> 45</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structCacheHeader.html">CacheHeader</a></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>{</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"><a class="line" href="structCacheHeader.html#ad3b962f8ce6c6115143cf581c7936e55"> 47</a></span> uint64_t <a class="code hl_variable" href="structCacheHeader.html#ad3b962f8ce6c6115143cf581c7936e55">max_items</a>; </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"><a class="line" href="structCacheHeader.html#a44229bb929d8949f3c2700d07123d224"> 48</a></span> <span class="keyword">struct </span><a class="code hl_struct" href="structCacheEntry.html">CacheEntry</a> *<a class="code hl_variable" href="structCacheHeader.html#a44229bb929d8949f3c2700d07123d224">cache</a>; </div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>};</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="keywordtype">void</span> *<a class="code hl_function" href="lru_8h.html#ac7008173fc7e392fa825c69410920f0a">find_in_cache</a>(<span class="keyword">struct</span> <a class="code hl_struct" href="structCacheHeader.html">CacheHeader</a> *cache, <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="structCacheEntry.html#aeb007cfa604b485f120ec1f7526c95f4">key</a>);</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keywordtype">void</span> <a class="code hl_function" href="lru_8h.html#a962bb6b97fb208cbd8a5932afb60e680">add_to_cache</a>(<span class="keyword">struct</span> <a class="code hl_struct" href="structCacheHeader.html">CacheHeader</a> *cache, <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="structCacheEntry.html#aeb007cfa604b485f120ec1f7526c95f4">key</a>, <span class="keywordtype">void</span> *<a class="code hl_variable" href="structCacheEntry.html#a7d6d1ed0aab03cffbb34aff16f6f3d56">value</a>);</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="keywordtype">void</span> *<a class="code hl_function" href="lru_8h.html#a8cb7ac8e057627210732ee61d2966e35">find_in_cache_uint64</a>(<span class="keyword">struct</span> <a class="code hl_struct" href="structCacheHeader.html">CacheHeader</a> *cache, uint64_t <a class="code hl_variable" href="structCacheEntry.html#aeb007cfa604b485f120ec1f7526c95f4">key</a>);</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="keywordtype">void</span> <a class="code hl_function" href="lru_8h.html#a0735969939ca80db3fe439ed92b787bb">add_to_cache_uint64</a>(<span class="keyword">struct</span> <a class="code hl_struct" href="structCacheHeader.html">CacheHeader</a> *cache, uint64_t <a class="code hl_variable" href="structCacheEntry.html#aeb007cfa604b485f120ec1f7526c95f4">key</a>, <span class="keywordtype">void</span> *<a class="code hl_variable" href="structCacheEntry.html#a7d6d1ed0aab03cffbb34aff16f6f3d56">value</a>);</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="preprocessor">#endif </span><span class="comment">// LIBAARUFORMAT_LRU_H</span></div>
<div class="ttc" id="alru_8h_html_a0735969939ca80db3fe439ed92b787bb"><div class="ttname"><a href="lru_8h.html#a0735969939ca80db3fe439ed92b787bb">add_to_cache_uint64</a></div><div class="ttdeci">void add_to_cache_uint64(struct CacheHeader *cache, uint64_t key, void *value)</div><div class="ttdoc">Adds a value to the cache with a uint64_t key, using string conversion.</div><div class="ttdef"><b>Definition</b> <a href="lru_8c_source.html#l00102">lru.c:102</a></div></div>
<div class="ttc" id="alru_8h_html_a8cb7ac8e057627210732ee61d2966e35"><div class="ttname"><a href="lru_8h.html#a8cb7ac8e057627210732ee61d2966e35">find_in_cache_uint64</a></div><div class="ttdeci">void * find_in_cache_uint64(struct CacheHeader *cache, uint64_t key)</div><div class="ttdoc">Finds a value in the cache by uint64_t key, using string conversion.</div><div class="ttdef"><b>Definition</b> <a href="lru_8c_source.html#l00088">lru.c:88</a></div></div>
<div class="ttc" id="alru_8h_html_a962bb6b97fb208cbd8a5932afb60e680"><div class="ttname"><a href="lru_8h.html#a962bb6b97fb208cbd8a5932afb60e680">add_to_cache</a></div><div class="ttdeci">void add_to_cache(struct CacheHeader *cache, const char *key, void *value)</div><div class="ttdoc">Adds a value to the cache with a string key, pruning if necessary.</div><div class="ttdef"><b>Definition</b> <a href="lru_8c_source.html#l00047">lru.c:47</a></div></div>
<div class="ttc" id="alru_8h_html_ac7008173fc7e392fa825c69410920f0a"><div class="ttname"><a href="lru_8h.html#ac7008173fc7e392fa825c69410920f0a">find_in_cache</a></div><div class="ttdeci">void * find_in_cache(struct CacheHeader *cache, const char *key)</div><div class="ttdoc">Finds a value in the cache by string key.</div><div class="ttdef"><b>Definition</b> <a href="lru_8c_source.html#l00024">lru.c:24</a></div></div>
<div class="ttc" id="astructCacheEntry_html"><div class="ttname"><a href="structCacheEntry.html">CacheEntry</a></div><div class="ttdoc">Single hash entry in the in-memory cache.</div><div class="ttdef"><b>Definition</b> <a href="#l00026">lru.h:27</a></div></div>
<div class="ttc" id="astructCacheEntry_html_a7d6d1ed0aab03cffbb34aff16f6f3d56"><div class="ttname"><a href="structCacheEntry.html#a7d6d1ed0aab03cffbb34aff16f6f3d56">CacheEntry::value</a></div><div class="ttdeci">void * value</div><div class="ttdoc">Opaque value pointer associated with key (not freed automatically on eviction/clear).</div><div class="ttdef"><b>Definition</b> <a href="#l00029">lru.h:29</a></div></div>
<div class="ttc" id="astructCacheEntry_html_ae7e5f03fa52b88d99e27e2433623b4f5"><div class="ttname"><a href="structCacheEntry.html#ae7e5f03fa52b88d99e27e2433623b4f5">CacheEntry::hh</a></div><div class="ttdeci">UT_hash_handle hh</div><div class="ttdoc">uthash handle linking this entry into the hash table (must remain last or per uthash docs).</div><div class="ttdef"><b>Definition</b> <a href="#l00030">lru.h:30</a></div></div>
<div class="ttc" id="astructCacheEntry_html_aeb007cfa604b485f120ec1f7526c95f4"><div class="ttname"><a href="structCacheEntry.html#aeb007cfa604b485f120ec1f7526c95f4">CacheEntry::key</a></div><div class="ttdeci">char * key</div><div class="ttdoc">Null-terminated key string (unique within the cache). May encode numeric keys.</div><div class="ttdef"><b>Definition</b> <a href="#l00028">lru.h:28</a></div></div>
<div class="ttc" id="astructCacheHeader_html"><div class="ttname"><a href="structCacheHeader.html">CacheHeader</a></div><div class="ttdoc">Cache top-level descriptor encapsulating the hash table root and capacity limit.</div><div class="ttdef"><b>Definition</b> <a href="#l00045">lru.h:46</a></div></div>
<div class="ttc" id="astructCacheHeader_html_a44229bb929d8949f3c2700d07123d224"><div class="ttname"><a href="structCacheHeader.html#a44229bb929d8949f3c2700d07123d224">CacheHeader::cache</a></div><div class="ttdeci">struct CacheEntry * cache</div><div class="ttdoc">Hash root (uthash). NULL when empty.</div><div class="ttdef"><b>Definition</b> <a href="#l00048">lru.h:48</a></div></div>
<div class="ttc" id="astructCacheHeader_html_ad3b962f8ce6c6115143cf581c7936e55"><div class="ttname"><a href="structCacheHeader.html#ad3b962f8ce6c6115143cf581c7936e55">CacheHeader::max_items</a></div><div class="ttdeci">uint64_t max_items</div><div class="ttdoc">Hard limit for number of entries (policy: enforce/ignore depends on implementation).</div><div class="ttdef"><b>Definition</b> <a href="#l00047">lru.h:47</a></div></div>
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