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<li class="navelem"><a class="el" href="dir_1efe588324fc547683bba4a3f1bac847.html">core</a></li><li class="navelem"><a class="el" href="dir_508bd2a9867f606940156debe4946ca8.html">Index</a></li> </ul>
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<div class="title">ConcurrentMergeScheduler.cs</div> </div>
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<a href="_concurrent_merge_scheduler_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/* </span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * contributor license agreements. See the NOTICE file distributed with</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * this work for additional information regarding copyright ownership.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * (the &quot;License&quot;); you may not use this file except in compliance with</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * limitations under the License.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">using</span> System.Collections.Generic;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">using</span> Lucene.Net.Support;</div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="code" href="_concurrent_merge_scheduler_8cs.html#ac7fdd4fc5daf7ce3e6be563664f8bf64"> 20</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_syns2_index_8cs.html#aada057080323f6e867d8f9c189276716">Directory</a> = Lucene.Net.Store.Directory;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">namespace </span>Lucene.Net.Index</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;{</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html"> 35</a></span>&#160; <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html" title="A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...">ConcurrentMergeScheduler</a>:<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_scheduler.html" title="Expert: IndexWriter uses an instance implementing this interface to execute the merges selected by a ...">MergeScheduler</a></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">private</span> <span class="keywordtype">int</span> mergeThreadPriority = - 1;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> IList&lt;MergeThread&gt; mergeThreads = <span class="keyword">new</span> List&lt;MergeThread&gt;();</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="comment">// Max number of threads allowed to be merging at once</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keyword">private</span> <span class="keywordtype">int</span> _maxThreadCount = 1;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <a class="code" href="_syns2_index_8cs.html#aada057080323f6e867d8f9c189276716">Directory</a> dir;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">private</span> <span class="keywordtype">bool</span> closed;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html" title="An IndexWriter creates and maintains an index. The create argument to the constructor determines whet...">IndexWriter</a> writer;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">int</span> mergeThreadCount;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; </div>
<div class="line"><a name="l00051"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a6f2680341ad3b70093048c700a20c547"> 51</a></span>&#160; <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html" title="A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...">ConcurrentMergeScheduler</a>()</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">if</span> (allInstances != null)</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="comment">// Only for testing</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; AddMyself();</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; }</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">int</span> MaxThreadCount</div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a00bce375f5065894f2d27c004fdf7bde"> 67</a></span>&#160; {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keyword">set</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordflow">if</span> (value &lt; 1)</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">&quot;count should be at least 1&quot;</span>);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; _maxThreadCount = value;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keyword">get</span> { <span class="keywordflow">return</span> _maxThreadCount; }</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; [System.Diagnostics.CodeAnalysis.SuppressMessage(<span class="stringliteral">&quot;Microsoft.Design&quot;</span>, <span class="stringliteral">&quot;CA1024:UsePropertiesWhereAppropriate&quot;</span>)]</div>
<div class="line"><a name="l00083"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a7fcf498de36692b17bd112b4432c0000"> 83</a></span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">int</span> GetMergeThreadPriority()</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; {</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; InitMergeThreadPriority();</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> mergeThreadPriority;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; </div>
<div class="line"><a name="l00093"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a129766f32d6acc9b245a74b3f2826d6c"> 93</a></span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetMergeThreadPriority(<span class="keywordtype">int</span> pri)</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keywordflow">if</span> (pri &gt; (<span class="keywordtype">int</span>) System.Threading.ThreadPriority.Highest || pri &lt; (<span class="keywordtype">int</span>) System.Threading.ThreadPriority.Lowest)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">&quot;priority must be in range &quot;</span> + (<span class="keywordtype">int</span>) System.Threading.ThreadPriority.Lowest + <span class="stringliteral">&quot; .. &quot;</span> + (<span class="keywordtype">int</span>) System.Threading.ThreadPriority.Highest + <span class="stringliteral">&quot; inclusive&quot;</span>);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; mergeThreadPriority = pri;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordtype">int</span> numThreads = MergeThreadCount();</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; numThreads; i++)</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html">MergeThread</a> merge = mergeThreads[i];</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; merge.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a64415b8121d29915162353968133e9aa">SetThreadPriority</a>(pri);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; }</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keyword">private</span> <span class="keywordtype">bool</span> Verbose()</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">return</span> writer != null &amp;&amp; writer.Verbose;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; }</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keyword">private</span> <span class="keywordtype">void</span> Message(System.String message)</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; writer.Message(<span class="stringliteral">&quot;CMS: &quot;</span> + message);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; }</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keyword">private</span> <span class="keywordtype">void</span> InitMergeThreadPriority()</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; {</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordflow">if</span> (mergeThreadPriority == - 1)</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="comment">// Default to slightly higher priority than our</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="comment">// calling thread</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; mergeThreadPriority = 1 + (System.Int32) <a class="code" href="class_lucene_1_1_net_1_1_support_1_1_thread_class.html" title="Support class used to handle threads ">ThreadClass</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_thread_class.html#ab6a0f57399d2c3a42a135745e9e3b80f" title="Gets the currently running thread ">Current</a>().<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_thread_class.html#ad09f9cc805ad24c2ac18cb1a47286f44" title="Gets or sets a value indicating the scheduling priority of a thread ">Priority</a>;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keywordflow">if</span> (mergeThreadPriority &gt; (<span class="keywordtype">int</span>) System.Threading.ThreadPriority.Highest)</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; mergeThreadPriority = (int) System.Threading.ThreadPriority.Highest;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; }</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; }</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; }</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; </div>
<div class="line"><a name="l00136"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a88d621fb655c97580aacb71a3d2df8a0"> 136</a></span>&#160; <span class="keyword">protected</span> <span class="keyword">override</span> <span class="keywordtype">void</span> Dispose(<span class="keywordtype">bool</span> disposing)</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="comment">//if (disposing)</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="comment">//{</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; closed = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="comment">//}</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a9e818d02ac77fd9e0d491d295f153082"> 144</a></span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> Sync()</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; {</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="keywordflow">while</span> (MergeThreadCount() &gt; 0)</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; {</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; Message(<span class="stringliteral">&quot;now wait for threads; currently &quot;</span> + mergeThreads.Count + <span class="stringliteral">&quot; still running&quot;</span>);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keywordtype">int</span> count = mergeThreads.Count;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; count; i++)</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; Message(<span class="stringliteral">&quot; &quot;</span> + i + <span class="stringliteral">&quot;: &quot;</span> + mergeThreads[i]);</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; System.Threading.Monitor.Wait(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; }</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keyword">private</span> <span class="keywordtype">int</span> MergeThreadCount()</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; {</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="keywordtype">int</span> count = 0;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; <span class="keywordtype">int</span> numThreads = mergeThreads.Count;</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; numThreads; i++)</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; {</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <span class="keywordflow">if</span> (mergeThreads[i].IsAlive)</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; {</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; count++;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; }</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordflow">return</span> count;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; }</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; }</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; </div>
<div class="line"><a name="l00182"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a14b248589abdaced8adf640b4f3292ea"> 182</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> Merge(<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html" title="An IndexWriter creates and maintains an index. The create argument to the constructor determines whet...">IndexWriter</a> writer)</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; {</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="comment">// TODO: .NET doesn&#39;t support this</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="comment">// assert !Thread.holdsLock(writer);</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; this.writer = writer;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; </div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; InitMergeThreadPriority();</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; dir = writer.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html#a3b1c7cb1f5060b72d2cd346870525c3c" title="Returns the Directory used by this index. ">Directory</a>;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="comment">// First, quickly run through the newly proposed merges</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="comment">// and add any orthogonal merges (ie a merge not</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="comment">// involving segments already pending to be merged) to</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="comment">// the queue. If we are way behind on merging, many of</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="comment">// these newly proposed merges will likely already be</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <span class="comment">// registered.</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; </div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; {</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; Message(<span class="stringliteral">&quot;now merge&quot;</span>);</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; Message(<span class="stringliteral">&quot; index: &quot;</span> + writer.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html#a19dbab4393010c63c8a8e97080359dee">SegString</a>());</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; }</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; </div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <span class="comment">// Iterate, pulling from the IndexWriter&#39;s queue of</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; <span class="comment">// pending merges, until it&#39;s empty:</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="keywordflow">while</span> (<span class="keyword">true</span>)</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; {</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="comment">// TODO: we could be careful about which merges to do in</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="comment">// the BG (eg maybe the &quot;biggest&quot; ones) vs FG, which</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="comment">// merges to do first (the easiest ones?), etc.</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge merge = writer.GetNextMerge();</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordflow">if</span> (merge == null)</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; {</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; Message(<span class="stringliteral">&quot; no more merges pending; now return&quot;</span>);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; return ;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; }</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="comment">// We do this w/ the primary thread to keep</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="comment">// deterministic assignment of segment names</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; writer.MergeInit(merge);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; <span class="keywordtype">bool</span> success = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; {</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; <span class="keywordflow">while</span> (MergeThreadCount() &gt;= _maxThreadCount)</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; {</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; Message(<span class="stringliteral">&quot; too many merge threads running; stalling...&quot;</span>);</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; System.Threading.Monitor.Wait(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; </div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; </div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; }</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; </div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; Message(<span class="stringliteral">&quot; consider merge &quot;</span> + merge.SegString(dir));</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; System.Diagnostics.Debug.Assert(MergeThreadCount() &lt; _maxThreadCount);</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="comment">// OK to spawn a new merge thread to handle this</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="comment">// merge:</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html">MergeThread</a> merger = GetMergeThread(writer, merge);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; mergeThreads.Add(merger);</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; <span class="keywordflow">if</span> (Verbose())</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; Message(<span class="stringliteral">&quot; launch new thread [&quot;</span> + merger.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_thread_class.html#a7b25ff3108e5dbcbc8dad5f6d7c6fe57" title="Gets or sets the name of the thread ">Name</a> + <span class="stringliteral">&quot;]&quot;</span>);</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; </div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; merger.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_thread_class.html#a49f536710bf6797e6e0d417b38e17f0c" title="Causes the operating system to change the state of the current thread instance to ThreadState...">Start</a>();</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; success = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; }</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; }</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="keywordflow">finally</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; {</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; <span class="keywordflow">if</span> (!success)</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; writer.MergeFinish(merge);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; }</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; }</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; }</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; }</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> DoMerge(<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge merge)</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; {</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; writer.Merge(merge);</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; }</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; </div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">virtual</span> MergeThread GetMergeThread(<a class="code" href="_syns2_index_8cs.html#a7d90824eac5b2433e714cc9faeb34d1b">IndexWriter</a> writer, MergePolicy.OneMerge merge)</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; {</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; {</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; var thread = <span class="keyword">new</span> MergeThread(<span class="keyword">this</span>, writer, merge);</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; thread.SetThreadPriority(mergeThreadPriority);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; thread.IsBackground = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; thread.Name = <span class="stringliteral">&quot;Lucene Merge Thread #&quot;</span> + mergeThreadCount++;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="keywordflow">return</span> thread;</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; }</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; }</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; </div>
<div class="line"><a name="l00286"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html"> 286</a></span>&#160; <span class="keyword">public</span> <span class="comment">/*protected internal*/</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html">MergeThread</a>:<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_thread_class.html" title="Support class used to handle threads ">ThreadClass</a></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; {</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; <span class="keyword">private</span> <span class="keywordtype">void</span> InitBlock(<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html" title="A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...">ConcurrentMergeScheduler</a> enclosingInstance)</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; {</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; this.enclosingInstance = enclosingInstance;</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160; }</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html" title="A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...">ConcurrentMergeScheduler</a> enclosingInstance;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html" title="A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...">ConcurrentMergeScheduler</a> Enclosing_Instance</div>
<div class="line"><a name="l00294"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a3257ae253854d6031b7d45af3b4b10b7"> 294</a></span>&#160; {</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="keyword">get</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; {</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; <span class="keywordflow">return</span> enclosingInstance;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; }</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; }</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; </div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html" title="An IndexWriter creates and maintains an index. The create argument to the constructor determines whet...">IndexWriter</a> writer;</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge startMerge;</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge runningMerge;</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; </div>
<div class="line"><a name="l00306"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a7aa5027be2473953d0aa8a749e818631"> 306</a></span>&#160; <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html">MergeThread</a>(<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html" title="A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...">ConcurrentMergeScheduler</a> enclosingInstance, <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html" title="An IndexWriter creates and maintains an index. The create argument to the constructor determines whet...">IndexWriter</a> writer, <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge startMerge)</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; {</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; InitBlock(enclosingInstance);</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; this.writer = writer;</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; this.startMerge = startMerge;</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; }</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; </div>
<div class="line"><a name="l00313"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a70192172081e0404718a4378f12e0731"> 313</a></span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetRunningMerge(<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge merge)</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; {</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; {</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; runningMerge = merge;</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; }</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; }</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge RunningMerge</div>
<div class="line"><a name="l00322"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a9a5ec5f4255d4aac073e1a0d56cac0fe"> 322</a></span>&#160; {</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; <span class="keyword">get</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; {</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; {</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; <span class="keywordflow">return</span> runningMerge;</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; }</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; }</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; }</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160;</div>
<div class="line"><a name="l00332"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a64415b8121d29915162353968133e9aa"> 332</a></span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetThreadPriority(<span class="keywordtype">int</span> pri)</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; {</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160; {</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; Priority = (System.Threading.ThreadPriority) pri;</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; }</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; <span class="keywordflow">catch</span> (System.NullReferenceException)</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; {</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; <span class="comment">// Strangely, Sun&#39;s JDK 1.5 on Linux sometimes</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; <span class="comment">// throws NPE out of here...</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160; }</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160; <span class="keywordflow">catch</span> (System.Security.SecurityException)</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; {</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; <span class="comment">// Ignore this because we will still run fine with</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; <span class="comment">// normal thread priority</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; }</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; }</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; </div>
<div class="line"><a name="l00350"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a74f091770be3ca42df76ec540f363fc4"> 350</a></span>&#160; <span class="keyword">override</span> <span class="keyword">public</span> <span class="keywordtype">void</span> Run()</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; {</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; <span class="comment">// First time through the while loop we do the merge</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; <span class="comment">// that we were started with:</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge merge = this.startMerge;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; </div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160; {</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; </div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; <span class="keywordflow">if</span> (Enclosing_Instance.Verbose())</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; Enclosing_Instance.Message(<span class="stringliteral">&quot; merge thread: start&quot;</span>);</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; <span class="keywordflow">while</span> (<span class="keyword">true</span>)</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; {</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; SetRunningMerge(merge);</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; Enclosing_Instance.DoMerge(merge);</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; </div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; <span class="comment">// Subsequent times through the loop we do any new</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; <span class="comment">// merge that writer says is necessary:</span></div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; merge = writer.GetNextMerge();</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; <span class="keywordflow">if</span> (merge != null)</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; {</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160; writer.MergeInit(merge);</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; <span class="keywordflow">if</span> (Enclosing_Instance.Verbose())</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; Enclosing_Instance.Message(<span class="stringliteral">&quot; merge thread: do another merge &quot;</span> + merge.SegString(Enclosing_Instance.dir));</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; }</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160; }</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; <span class="keywordflow">if</span> (Enclosing_Instance.Verbose())</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160; Enclosing_Instance.Message(<span class="stringliteral">&quot; merge thread: done&quot;</span>);</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; }</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; <span class="keywordflow">catch</span> (System.Exception exc)</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160; {</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; <span class="comment">// Ignore the exception if it was due to abort:</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; <span class="keywordflow">if</span> (!(exc is <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.MergeAbortedException))</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160; {</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; <span class="keywordflow">if</span> (!Enclosing_Instance.suppressExceptions)</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; {</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; <span class="comment">// suppressExceptions is normally only set during</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; <span class="comment">// testing.</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; Lucene.Net.Index.ConcurrentMergeScheduler.anyExceptions = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; Enclosing_Instance.HandleMergeException(exc);</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; }</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; }</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; <span class="keywordflow">finally</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; {</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; lock (Enclosing_Instance)</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; {</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; System.Threading.Monitor.PulseAll(Enclosing_Instance);</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; Enclosing_Instance.mergeThreads.Remove(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; <span class="keywordtype">bool</span> removed = !Enclosing_Instance.mergeThreads.Contains(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; System.Diagnostics.Debug.Assert(removed);</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; }</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; }</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; }</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; </div>
<div class="line"><a name="l00410"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler_1_1_merge_thread.html#a6df8768150bdc7e260c43f71cd59fc04"> 410</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> System.String ToString()</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; {</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.OneMerge merge = RunningMerge ?? startMerge;</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;merge thread: &quot;</span> + merge.SegString(Enclosing_Instance.dir);</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; }</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; }</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; </div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> HandleMergeException(System.Exception exc)</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160; {</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; <span class="comment">// When an exception is hit during merge, IndexWriter</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; <span class="comment">// removes any partial files and then allows another</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; <span class="comment">// merge to run. If whatever caused the error is not</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; <span class="comment">// transient then the exception will keep happening,</span></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; <span class="comment">// so, we sleep here to avoid saturating CPU in such</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; <span class="comment">// cases:</span></div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; System.Threading.Thread.Sleep(<span class="keyword">new</span> System.TimeSpan((System.Int64) 10000 * 250));</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; </div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_merge_policy.html" title="Expert: a MergePolicy determines the sequence of primitive merge operations to be used for overall me...">MergePolicy</a>.MergeException(exc, dir);</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; }</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; </div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; <span class="keyword">internal</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> anyExceptions = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; </div>
<div class="line"><a name="l00436"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a536904093e579aae2090efcc17bc2441"> 436</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> AnyUnhandledExceptions()</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; {</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; <span class="keywordflow">if</span> (allInstances == null)</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160; {</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.SystemException(<span class="stringliteral">&quot;setTestMode() was not called; often this is because your test case&#39;s setUp method fails to call super.setUp in LuceneTestCase&quot;</span>);</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; }</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; lock (allInstances)</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; {</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; <span class="keywordtype">int</span> count = allInstances.Count;</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; <span class="comment">// Make sure all outstanding threads are done so we see</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; <span class="comment">// any exceptions they may produce:</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; count; i++)</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160; allInstances[i].Sync();</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160; <span class="keywordtype">bool</span> v = anyExceptions;</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160; anyExceptions = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160; <span class="keywordflow">return</span> v;</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160; }</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160; }</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; </div>
<div class="line"><a name="l00455"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a3cddfec7eeaa5623a9cb1b1207413279"> 455</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">void</span> ClearUnhandledExceptions()</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; {</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; lock (allInstances)</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160; {</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160; anyExceptions = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; }</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; }</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; </div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160; <span class="keyword">private</span> <span class="keywordtype">void</span> AddMyself()</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; {</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160; lock (allInstances)</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160; {</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160; <span class="keywordtype">int</span> size = allInstances.Count;</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160; <span class="keywordtype">int</span> upto = 0;</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; size; i++)</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160; {</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html" title="A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...">ConcurrentMergeScheduler</a> other = allInstances[i];</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; <span class="keywordflow">if</span> (!(other.closed &amp;&amp; 0 == other.MergeThreadCount()))</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160; <span class="comment">// Keep this one for now: it still has threads or</span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160; <span class="comment">// may spawn new threads</span></div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; allInstances[upto++] = other;</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160; }</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160; allInstances.RemoveRange(upto, allInstances.Count - upto);</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160; allInstances.Add(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160; }</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160; }</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160; </div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160; <span class="keyword">private</span> <span class="keywordtype">bool</span> suppressExceptions;</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160; </div>
<div class="line"><a name="l00486"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a17c6203a1d190135e047a169880cc291"> 486</a></span>&#160; <span class="keyword">public</span> <span class="comment">/*internal*/</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetSuppressExceptions()</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160; {</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; suppressExceptions = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160; }</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160; </div>
<div class="line"><a name="l00492"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a4e0511bf74427ff06dd93399cb4332df"> 492</a></span>&#160; <span class="keyword">public</span> <span class="comment">/*internal*/</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> ClearSuppressExceptions()</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160; {</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160; suppressExceptions = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160; }</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160; </div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160; <span class="keyword">private</span> <span class="keyword">static</span> List&lt;ConcurrentMergeScheduler&gt; allInstances;</div>
<div class="line"><a name="l00499"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_concurrent_merge_scheduler.html#a42a6eda18cdcaec07f2a98dc9797c94a"> 499</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">void</span> SetTestMode()</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>&#160; {</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160; allInstances = <span class="keyword">new</span> List&lt;ConcurrentMergeScheduler&gt;();</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160; }</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160; }</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160;}</div>
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