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<h1 id="Lucene_Net_Util_DisposableThreadLocal_1" data-uid="Lucene.Net.Util.DisposableThreadLocal`1" class="text-break">Class DisposableThreadLocal&lt;T&gt;
</h1>
<div class="markdown level0 summary"><p>Java&apos;s builtin ThreadLocal has a serious flaw:
it can take an arbitrarily long amount of time to
dereference the things you had stored in it, even once the
ThreadLocal instance itself is no longer referenced.
This is because there is single, master map stored for
each thread, which all ThreadLocals share, and that
master map only periodically purges &quot;stale&quot; entries.
<p>
While not technically a memory leak, because eventually
the memory will be reclaimed, it can take a long time
and you can easily hit <span class="xref">System.OutOfMemoryException</span> because from the
GC&apos;s standpoint the stale entries are not reclaimable.
<p>
This class works around that, by only enrolling
WeakReference values into the ThreadLocal, and
separately holding a hard reference to each stored
value. When you call <a class="xref" href="Lucene.Net.Util.DisposableThreadLocal-1.html#Lucene_Net_Util_DisposableThreadLocal_1_Dispose">Dispose()</a>, these hard
references are cleared and then GC is freely able to
reclaim space by objects stored in it.
<p>
You should not call <a class="xref" href="Lucene.Net.Util.DisposableThreadLocal-1.html#Lucene_Net_Util_DisposableThreadLocal_1_Dispose">Dispose()</a> until all
threads are done using the instance.
<p>
<div class="lucene-block lucene-internal">This is a Lucene.NET INTERNAL API, use at your own risk</div></div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><span class="xref">System.Object</span></div>
<div class="level1"><span class="xref">DisposableThreadLocal&lt;T&gt;</span></div>
</div>
<div classs="implements">
<h5>Implements</h5>
<div><span class="xref">System.IDisposable</span></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
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<span class="xref">System.Object.Equals(System.Object)</span>
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<span class="xref">System.Object.Equals(System.Object, System.Object)</span>
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<span class="xref">System.Object.GetHashCode()</span>
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<span class="xref">System.Object.GetType()</span>
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<span class="xref">System.Object.MemberwiseClone()</span>
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<span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
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<span class="xref">System.Object.ToString()</span>
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</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Util.html">Lucene.Net.Util</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.dll</h6>
<h5 id="Lucene_Net_Util_DisposableThreadLocal_1_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public class DisposableThreadLocal&lt;T&gt; : IDisposable</code></pre>
</div>
<h5 class="typeParameters">Type Parameters</h5>
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<th>Name</th>
<th>Description</th>
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<td><span class="parametername">T</span></td>
<td></td>
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<h3 id="methods">Methods
</h3>
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<h4 id="Lucene_Net_Util_DisposableThreadLocal_1_Dispose" data-uid="Lucene.Net.Util.DisposableThreadLocal`1.Dispose">Dispose()</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
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<pre><code class="lang-csharp hljs">public void Dispose()</code></pre>
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<h4 id="Lucene_Net_Util_DisposableThreadLocal_1_Get" data-uid="Lucene.Net.Util.DisposableThreadLocal`1.Get">Get()</h4>
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<h5 class="decalaration">Declaration</h5>
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<pre><code class="lang-csharp hljs">public virtual T Get()</code></pre>
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<h5 class="returns">Returns</h5>
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<h4 id="Lucene_Net_Util_DisposableThreadLocal_1_InitialValue" data-uid="Lucene.Net.Util.DisposableThreadLocal`1.InitialValue">InitialValue()</h4>
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<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">protected virtual T InitialValue()</code></pre>
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<th>Type</th>
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<h4 id="Lucene_Net_Util_DisposableThreadLocal_1_Set__0_" data-uid="Lucene.Net.Util.DisposableThreadLocal`1.Set(`0)">Set(T)</h4>
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<h5 class="decalaration">Declaration</h5>
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<pre><code class="lang-csharp hljs">public virtual void Set(T object)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
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<th>Type</th>
<th>Name</th>
<th>Description</th>
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<td><span class="xref">T</span></td>
<td><span class="parametername">object</span></td>
<td></td>
</tr>
</tbody>
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<h3 id="implements">Implements</h3>
<div>
<span class="xref">System.IDisposable</span>
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