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| <div class="title">lru-cache.inline.h</div> </div> |
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| <a href="lru-cache_8inline_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2015 Cloudera Inc.</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</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">// Unless required by applicable law or agreed to in writing, software</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// See the License for the specific language governing permissions and</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// limitations under the License.</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#ifndef IMPALA_UTIL_LRU_CACHE_INLINE_H_</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor"></span><span class="preprocessor">#define IMPALA_UTIL_LRU_CACHE_INLINE_H_</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>impala {</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Key, <span class="keyword">typename</span> Value></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"><a class="line" href="classimpala_1_1FifoMultimap.html#a68dd48a3280a3a6f09d0c1a621204801"> 21</a></span> <a class="code" href="classimpala_1_1FifoMultimap.html#a68dd48a3280a3a6f09d0c1a621204801">FifoMultimap<Key, Value>::~FifoMultimap</a>() {</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordflow">for</span> (<span class="keyword">typename</span> ListType::iterator b = lru_list_.begin(),</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  e = lru_list_.end(); b != e; ++b) {</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  deleter_(&(b->second));</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  }</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> }</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="keyword">template</span> <<span class="keyword">typename</span> Key, <span class="keyword">typename</span> Value></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="classimpala_1_1FifoMultimap.html#a681f6bfd8901130fbf4627d2ce5e1ac5"> 29</a></span> <span class="keywordtype">void</span> <a class="code" href="classimpala_1_1FifoMultimap.html#a681f6bfd8901130fbf4627d2ce5e1ac5">FifoMultimap<Key, Value>::Put</a>(<span class="keyword">const</span> Key& k, <span class="keyword">const</span> Value& v) {</div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  boost::lock_guard<SpinLock> g(<a class="code" href="namespaceimpala.html#a420d4837428729719338ca91ed375f3c">lock_</a>);</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (lru_list_.size() >= capacity_) EvictValue();</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">const</span> <a class="code" href="classimpala_1_1FifoMultimap.html#a106732050ce52789ad086e06ab32fa3e">ValueType</a>& kv_pair = std::make_pair(k, v);</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">const</span> <span class="keyword">typename</span> MapType::value_type& val =</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  std::make_pair(k, lru_list_.insert(lru_list_.end(), kv_pair));</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// Find an insert hint to use with the insert operation</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">typename</span> MapType::iterator it = cache_.lower_bound(k);</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">if</span> (it == cache_.end() || it->first != k) {</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  cache_.insert(val);</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// If the insert hint is sufficiently good, the element will be inserted before in the</span></div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// sequence of elements having the same key</span></div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  cache_.insert(it, val);</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</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> </div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Key, <span class="keyword">typename</span> Value></div> |
| <div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classimpala_1_1FifoMultimap.html#ae2291140eb56002a26db4017141b346a"> 47</a></span> <span class="keywordtype">bool</span> <a class="code" href="classimpala_1_1FifoMultimap.html#ae2291140eb56002a26db4017141b346a">FifoMultimap<Key, Value>::Pop</a>(<span class="keyword">const</span> Key& k, Value* out) {</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  boost::lock_guard<SpinLock> g(<a class="code" href="namespaceimpala.html#a420d4837428729719338ca91ed375f3c">lock_</a>);</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// Find the first value under key k.</span></div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">typename</span> MapType::iterator it = cache_.lower_bound(k);</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">if</span> (it == cache_.end() || it->first != k) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">typename</span> ListType::iterator lit = it->second;</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  cache_.erase(it);</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  *out = lit->second;</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  lru_list_.erase(lit);</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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> </div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Key, <span class="keyword">typename</span> Value></div> |
| <div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classimpala_1_1FifoMultimap.html#ac3d5d8aa9ac065be23d97af6360f758d"> 60</a></span> <span class="keywordtype">void</span> <a class="code" href="classimpala_1_1FifoMultimap.html#ac3d5d8aa9ac065be23d97af6360f758d">FifoMultimap<Key, Value>::EvictValue</a>() {</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">typename</span> ListType::iterator to_evict = lru_list_.begin();</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// Find all elements under this key, until C++11 the order of the elements is not</span></div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// guaranteed.</span></div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  std::pair<typename MapType::iterator, typename MapType::iterator> range =</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  cache_.equal_range(to_evict->first);</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// Search until the value is found in the range of the same key.</span></div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">while</span> (range.first != range.second) {</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">if</span> (range.first->second == to_evict) {</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  cache_.erase(range.first);</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  ++range.first;</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  DCHECK(range.first != range.second); <span class="comment">// LCOV_EXCL_LINE</span></div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  deleter_(&(*to_evict).second);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  lru_list_.erase(to_evict);</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span> }</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span> }</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="preprocessor">#endif // IMPALA_UTIL_LRU_CACHE_INLINE_H_</span></div> |
| <div class="ttc" id="classimpala_1_1FifoMultimap_html_a681f6bfd8901130fbf4627d2ce5e1ac5"><div class="ttname"><a href="classimpala_1_1FifoMultimap.html#a681f6bfd8901130fbf4627d2ce5e1ac5">impala::FifoMultimap::Put</a></div><div class="ttdeci">void Put(const Key &k, const Value &v)</div><div class="ttdef"><b>Definition:</b> <a href="lru-cache_8inline_8h_source.html#l00029">lru-cache.inline.h:29</a></div></div> |
| <div class="ttc" id="classimpala_1_1FifoMultimap_html_ae2291140eb56002a26db4017141b346a"><div class="ttname"><a href="classimpala_1_1FifoMultimap.html#ae2291140eb56002a26db4017141b346a">impala::FifoMultimap::Pop</a></div><div class="ttdeci">bool Pop(const Key &k, Value *out)</div><div class="ttdef"><b>Definition:</b> <a href="lru-cache_8inline_8h_source.html#l00047">lru-cache.inline.h:47</a></div></div> |
| <div class="ttc" id="namespaceimpala_html_a420d4837428729719338ca91ed375f3c"><div class="ttname"><a href="namespaceimpala.html#a420d4837428729719338ca91ed375f3c">impala::lock_</a></div><div class="ttdeci">boost::mutex lock_</div><div class="ttdoc">protects all fields below </div><div class="ttdef"><b>Definition:</b> <a href="coordinator_8h_source.html#l00233">coordinator.h:233</a></div></div> |
| <div class="ttc" id="classimpala_1_1FifoMultimap_html_ac3d5d8aa9ac065be23d97af6360f758d"><div class="ttname"><a href="classimpala_1_1FifoMultimap.html#ac3d5d8aa9ac065be23d97af6360f758d">impala::FifoMultimap::EvictValue</a></div><div class="ttdeci">void EvictValue()</div><div class="ttdef"><b>Definition:</b> <a href="lru-cache_8inline_8h_source.html#l00060">lru-cache.inline.h:60</a></div></div> |
| <div class="ttc" id="classimpala_1_1FifoMultimap_html_a68dd48a3280a3a6f09d0c1a621204801"><div class="ttname"><a href="classimpala_1_1FifoMultimap.html#a68dd48a3280a3a6f09d0c1a621204801">impala::FifoMultimap::~FifoMultimap</a></div><div class="ttdeci">~FifoMultimap()</div><div class="ttdoc">Walk the list of elements and call the deleter function for each element. </div><div class="ttdef"><b>Definition:</b> <a href="lru-cache_8inline_8h_source.html#l00021">lru-cache.inline.h:21</a></div></div> |
| <div class="ttc" id="classimpala_1_1FifoMultimap_html_a106732050ce52789ad086e06ab32fa3e"><div class="ttname"><a href="classimpala_1_1FifoMultimap.html#a106732050ce52789ad086e06ab32fa3e">impala::FifoMultimap::ValueType</a></div><div class="ttdeci">std::pair< Key, Value > ValueType</div><div class="ttdef"><b>Definition:</b> <a href="lru-cache_8h_source.html#l00063">lru-cache.h:63</a></div></div> |
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