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| |
| <h1 id="Lucene_Net_Store_MMapDirectory" data-uid="Lucene.Net.Store.MMapDirectory" class="text-break">Class MMapDirectory |
| </h1> |
| <div class="markdown level0 summary"><p>File-based <a class="xref" href="Lucene.Net.Store.Directory.html">Directory</a> implementation that uses |
| <span class="xref">System.IO.MemoryMappedFiles.MemoryMappedFile</span> for reading, and |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.FSIndexOutput.html">FSDirectory.FSIndexOutput</a> for writing.</p> |
| <p><strong>NOTE</strong>: memory mapping uses up a portion of the |
| virtual memory address space in your process equal to the |
| size of the file being mapped. Before using this class, |
| be sure your have plenty of virtual address space, e.g. by |
| using a 64 bit runtime, or a 32 bit runtime with indexes that are |
| guaranteed to fit within the address space. |
| On 32 bit platforms also consult <a class="xref" href="Lucene.Net.Store.MMapDirectory.html#Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_System_Int32_">MMapDirectory(DirectoryInfo, LockFactory, Int32)</a> |
| if you have problems with mmap failing because of fragmented |
| address space. If you get an <span class="xref">System.OutOfMemoryException</span>, it is recommended |
| to reduce the chunk size, until it works. |
| <p> |
| <strong>NOTE:</strong> Accessing this class either directly or |
| indirectly from a thread while it's interrupted can close the |
| underlying channel immediately if at the same time the thread is |
| blocked on IO. The channel will remain closed and subsequent access |
| to <a class="xref" href="Lucene.Net.Store.MMapDirectory.html">MMapDirectory</a> will throw a <span class="xref">System.ObjectDisposedException</span>. |
| </p> |
| </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"><a class="xref" href="Lucene.Net.Store.Directory.html">Directory</a></div> |
| <div class="level2"><a class="xref" href="Lucene.Net.Store.BaseDirectory.html">BaseDirectory</a></div> |
| <div class="level3"><a class="xref" href="Lucene.Net.Store.FSDirectory.html">FSDirectory</a></div> |
| <div class="level4"><span class="xref">MMapDirectory</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> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_DEFAULT_READ_CHUNK_SIZE">FSDirectory.DEFAULT_READ_CHUNK_SIZE</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_m_directory">FSDirectory.m_directory</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_Open_System_IO_DirectoryInfo_">FSDirectory.Open(DirectoryInfo)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_Open_System_String_">FSDirectory.Open(String)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_Open_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_">FSDirectory.Open(DirectoryInfo, LockFactory)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_Open_System_String_Lucene_Net_Store_LockFactory_">FSDirectory.Open(String, LockFactory)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_SetLockFactory_Lucene_Net_Store_LockFactory_">FSDirectory.SetLockFactory(LockFactory)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_ListAll_System_IO_DirectoryInfo_">FSDirectory.ListAll(DirectoryInfo)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_ListAll">FSDirectory.ListAll()</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_FileExists_System_String_">FSDirectory.FileExists(String)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_FileLength_System_String_">FSDirectory.FileLength(String)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_DeleteFile_System_String_">FSDirectory.DeleteFile(String)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_CreateOutput_System_String_Lucene_Net_Store_IOContext_">FSDirectory.CreateOutput(String, IOContext)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_EnsureCanWrite_System_String_">FSDirectory.EnsureCanWrite(String)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_OnIndexOutputClosed_Lucene_Net_Store_FSDirectory_FSIndexOutput_">FSDirectory.OnIndexOutputClosed(FSDirectory.FSIndexOutput)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_Sync_System_Collections_Generic_ICollection_System_String__">FSDirectory.Sync(ICollection<String>)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_GetLockID">FSDirectory.GetLockID()</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_Dispose_System_Boolean_">FSDirectory.Dispose(Boolean)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_Directory">FSDirectory.Directory</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_ToString">FSDirectory.ToString()</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.FSDirectory.html#Lucene_Net_Store_FSDirectory_ReadChunkSize">FSDirectory.ReadChunkSize</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.BaseDirectory.html#Lucene_Net_Store_BaseDirectory_IsOpen">BaseDirectory.IsOpen</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.BaseDirectory.html#Lucene_Net_Store_BaseDirectory_m_lockFactory">BaseDirectory.m_lockFactory</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.BaseDirectory.html#Lucene_Net_Store_BaseDirectory_MakeLock_System_String_">BaseDirectory.MakeLock(String)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.BaseDirectory.html#Lucene_Net_Store_BaseDirectory_ClearLock_System_String_">BaseDirectory.ClearLock(String)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.BaseDirectory.html#Lucene_Net_Store_BaseDirectory_LockFactory">BaseDirectory.LockFactory</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.BaseDirectory.html#Lucene_Net_Store_BaseDirectory_EnsureOpen">BaseDirectory.EnsureOpen()</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.Directory.html#Lucene_Net_Store_Directory_OpenChecksumInput_System_String_Lucene_Net_Store_IOContext_">Directory.OpenChecksumInput(String, IOContext)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.Directory.html#Lucene_Net_Store_Directory_Dispose">Directory.Dispose()</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Store.Directory.html#Lucene_Net_Store_Directory_Copy_Lucene_Net_Store_Directory_System_String_System_String_Lucene_Net_Store_IOContext_">Directory.Copy(Directory, String, String, IOContext)</a> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object, System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.GetHashCode()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.GetType()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.MemberwiseClone()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span> |
| </div> |
| </div> |
| <h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Store.html">Lucene.Net.Store</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.dll</h6> |
| <h5 id="Lucene_Net_Store_MMapDirectory_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public class MMapDirectory : FSDirectory, IDisposable</code></pre> |
| </div> |
| <h3 id="constructors">Constructors |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.%23ctor(System.IO.DirectoryInfo)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L81">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory__ctor_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor(System.IO.DirectoryInfo)">MMapDirectory(DirectoryInfo)</h4> |
| <div class="markdown level1 summary"><p>Create a new <a class="xref" href="Lucene.Net.Store.MMapDirectory.html">MMapDirectory</a> for the named location and <a class="xref" href="Lucene.Net.Store.NativeFSLockFactory.html">NativeFSLockFactory</a>.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public MMapDirectory(DirectoryInfo path)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.DirectoryInfo</span></td> |
| <td><span class="parametername">path</span></td> |
| <td><p>the path of the directory </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.IOException</span></td> |
| <td><p>if there is a low-level I/O error </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.%23ctor(System.IO.DirectoryInfo%2CLucene.Net.Store.LockFactory)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L71">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory__ctor_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor(System.IO.DirectoryInfo,Lucene.Net.Store.LockFactory)">MMapDirectory(DirectoryInfo, LockFactory)</h4> |
| <div class="markdown level1 summary"><p>Create a new <a class="xref" href="Lucene.Net.Store.MMapDirectory.html">MMapDirectory</a> for the named location.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public MMapDirectory(DirectoryInfo path, LockFactory lockFactory)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.DirectoryInfo</span></td> |
| <td><span class="parametername">path</span></td> |
| <td><p>the path of the directory </p> |
| </td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.LockFactory.html">LockFactory</a></td> |
| <td><span class="parametername">lockFactory</span></td> |
| <td><p>the lock factory to use, or null for the default |
| (<a class="xref" href="Lucene.Net.Store.NativeFSLockFactory.html">NativeFSLockFactory</a>); </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.IOException</span></td> |
| <td><p>if there is a low-level I/O error </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_System_Int32_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.%23ctor(System.IO.DirectoryInfo%2CLucene.Net.Store.LockFactory%2CSystem.Int32)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L106">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory__ctor_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_System_Int32_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor(System.IO.DirectoryInfo,Lucene.Net.Store.LockFactory,System.Int32)">MMapDirectory(DirectoryInfo, LockFactory, Int32)</h4> |
| <div class="markdown level1 summary"><p>Create a new <a class="xref" href="Lucene.Net.Store.MMapDirectory.html">MMapDirectory</a> for the named location, specifying the |
| maximum chunk size used for memory mapping.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public MMapDirectory(DirectoryInfo path, LockFactory lockFactory, int maxChunkSize)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.DirectoryInfo</span></td> |
| <td><span class="parametername">path</span></td> |
| <td><p>the path of the directory </p> |
| </td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.LockFactory.html">LockFactory</a></td> |
| <td><span class="parametername">lockFactory</span></td> |
| <td><p>the lock factory to use, or <code>null</code> for the default |
| (<a class="xref" href="Lucene.Net.Store.NativeFSLockFactory.html">NativeFSLockFactory</a>); </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">maxChunkSize</span></td> |
| <td><p>maximum chunk size (default is 1 GiBytes for |
| 64 bit runtimes and 256 MiBytes for 32 bit runtimes) used for memory mapping. |
| <p> |
| Especially on 32 bit platform, the address space can be very fragmented, |
| so large index files cannot be mapped. Using a lower chunk size makes |
| the directory implementation a little bit slower (as the correct chunk |
| may be resolved on lots of seeks) but the chance is higher that mmap |
| does not fail. On 64 bit platforms, this parameter should always |
| be <code>1 << 30</code>, as the address space is big enough. |
| <p> |
| <strong>Please note:</strong> The chunk size is always rounded down to a power of 2.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.IOException</span></td> |
| <td><p>if there is a low-level I/O error </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory__ctor_System_String_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.%23ctor(System.String)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L138">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory__ctor_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory__ctor_System_String_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor(System.String)">MMapDirectory(String)</h4> |
| <div class="markdown level1 summary"><p>Create a new <a class="xref" href="Lucene.Net.Store.MMapDirectory.html">MMapDirectory</a> for the named location and <a class="xref" href="Lucene.Net.Store.NativeFSLockFactory.html">NativeFSLockFactory</a>. |
| <p> |
| LUCENENET specific overload for convenience using string instead of <span class="xref">System.IO.DirectoryInfo</span>.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public MMapDirectory(string path)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.String</span></td> |
| <td><span class="parametername">path</span></td> |
| <td><p>the path of the directory </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.IOException</span></td> |
| <td><p>if there is a low-level I/O error </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory__ctor_System_String_Lucene_Net_Store_LockFactory_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.%23ctor(System.String%2CLucene.Net.Store.LockFactory)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L126">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory__ctor_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory__ctor_System_String_Lucene_Net_Store_LockFactory_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor(System.String,Lucene.Net.Store.LockFactory)">MMapDirectory(String, LockFactory)</h4> |
| <div class="markdown level1 summary"><p>Create a new <a class="xref" href="Lucene.Net.Store.MMapDirectory.html">MMapDirectory</a> for the named location. |
| <p> |
| LUCENENET specific overload for convenience using string instead of <span class="xref">System.IO.DirectoryInfo</span>.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public MMapDirectory(string path, LockFactory lockFactory)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.String</span></td> |
| <td><span class="parametername">path</span></td> |
| <td><p>the path of the directory </p> |
| </td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.LockFactory.html">LockFactory</a></td> |
| <td><span class="parametername">lockFactory</span></td> |
| <td><p>the lock factory to use, or null for the default |
| (<a class="xref" href="Lucene.Net.Store.NativeFSLockFactory.html">NativeFSLockFactory</a>); </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.IOException</span></td> |
| <td><p>if there is a low-level I/O error </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory__ctor_System_String_Lucene_Net_Store_LockFactory_System_Int32_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.%23ctor(System.String%2CLucene.Net.Store.LockFactory%2CSystem.Int32)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L165">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory__ctor_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory__ctor_System_String_Lucene_Net_Store_LockFactory_System_Int32_" data-uid="Lucene.Net.Store.MMapDirectory.#ctor(System.String,Lucene.Net.Store.LockFactory,System.Int32)">MMapDirectory(String, LockFactory, Int32)</h4> |
| <div class="markdown level1 summary"><p>Create a new <a class="xref" href="Lucene.Net.Store.MMapDirectory.html">MMapDirectory</a> for the named location, specifying the |
| maximum chunk size used for memory mapping. |
| <p> |
| LUCENENET specific overload for convenience using string instead of <span class="xref">System.IO.DirectoryInfo</span>.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public MMapDirectory(string path, LockFactory lockFactory, int maxChunkSize)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.String</span></td> |
| <td><span class="parametername">path</span></td> |
| <td><p>the path of the directory </p> |
| </td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.LockFactory.html">LockFactory</a></td> |
| <td><span class="parametername">lockFactory</span></td> |
| <td><p>the lock factory to use, or <code>null</code> for the default |
| (<a class="xref" href="Lucene.Net.Store.NativeFSLockFactory.html">NativeFSLockFactory</a>); </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">maxChunkSize</span></td> |
| <td><p>maximum chunk size (default is 1 GiBytes for |
| 64 bit runtimes and 256 MiBytes for 32 bit runtimes) used for memory mapping. |
| <p> |
| Especially on 32 bit platform, the address space can be very fragmented, |
| so large index files cannot be mapped. Using a lower chunk size makes |
| the directory implementation a little bit slower (as the correct chunk |
| may be resolved on lots of seeks) but the chance is higher that mmap |
| does not fail. On 64 bit platforms, this parameter should always |
| be <code>1 << 30</code>, as the address space is big enough. |
| <p> |
| <strong>Please note:</strong> The chunk size is always rounded down to a power of 2.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.IOException</span></td> |
| <td><p>if there is a low-level I/O error </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h3 id="fields">Fields |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory_DEFAULT_MAX_BUFF.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.DEFAULT_MAX_BUFF%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L60">View Source</a> |
| </span> |
| <h4 id="Lucene_Net_Store_MMapDirectory_DEFAULT_MAX_BUFF" data-uid="Lucene.Net.Store.MMapDirectory.DEFAULT_MAX_BUFF">DEFAULT_MAX_BUFF</h4> |
| <div class="markdown level1 summary"><p>Default max chunk size. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public static readonly int DEFAULT_MAX_BUFF</code></pre> |
| </div> |
| <h5 class="fieldValue">Field Value</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 id="Lucene_Net_Store_MMapDirectory_DEFAULT_MAX_BUFF_seealso">See Also</h5> |
| <div class="seealso"> |
| <div><a class="xref" href="Lucene.Net.Store.MMapDirectory.html#Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_System_Int32_">MMapDirectory(DirectoryInfo, LockFactory, Int32)</a></div> |
| </div> |
| <h3 id="properties">Properties |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory_MaxChunkSize.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.MaxChunkSize%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L177">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory_MaxChunkSize_" data-uid="Lucene.Net.Store.MMapDirectory.MaxChunkSize*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory_MaxChunkSize" data-uid="Lucene.Net.Store.MMapDirectory.MaxChunkSize">MaxChunkSize</h4> |
| <div class="markdown level1 summary"><p>Returns the current mmap chunk size. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public int MaxChunkSize { get; }</code></pre> |
| </div> |
| <h5 class="propertyValue">Property Value</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 id="Lucene_Net_Store_MMapDirectory_MaxChunkSize_seealso">See Also</h5> |
| <div class="seealso"> |
| <div><a class="xref" href="Lucene.Net.Store.MMapDirectory.html#Lucene_Net_Store_MMapDirectory__ctor_System_IO_DirectoryInfo_Lucene_Net_Store_LockFactory_System_Int32_">MMapDirectory(DirectoryInfo, LockFactory, Int32)</a></div> |
| </div> |
| <h3 id="methods">Methods |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory_CreateSlicer_System_String_Lucene_Net_Store_IOContext_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.CreateSlicer(System.String%2CLucene.Net.Store.IOContext)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L189">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory_CreateSlicer_" data-uid="Lucene.Net.Store.MMapDirectory.CreateSlicer*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory_CreateSlicer_System_String_Lucene_Net_Store_IOContext_" data-uid="Lucene.Net.Store.MMapDirectory.CreateSlicer(System.String,Lucene.Net.Store.IOContext)">CreateSlicer(String, IOContext)</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public override Directory.IndexInputSlicer CreateSlicer(string name, IOContext context)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.String</span></td> |
| <td><span class="parametername">name</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.IOContext.html">IOContext</a></td> |
| <td><span class="parametername">context</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.Directory.IndexInputSlicer.html">Directory.IndexInputSlicer</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="overrides">Overrides</h5> |
| <div><a class="xref" href="Lucene.Net.Store.Directory.html#Lucene_Net_Store_Directory_CreateSlicer_System_String_Lucene_Net_Store_IOContext_">Directory.CreateSlicer(String, IOContext)</a></div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Store_MMapDirectory_OpenInput_System_String_Lucene_Net_Store_IOContext_.md&value=---%0Auid%3A%20Lucene.Net.Store.MMapDirectory.OpenInput(System.String%2CLucene.Net.Store.IOContext)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net/Store/MMapDirectory.cs/#L181">View Source</a> |
| </span> |
| <a id="Lucene_Net_Store_MMapDirectory_OpenInput_" data-uid="Lucene.Net.Store.MMapDirectory.OpenInput*"></a> |
| <h4 id="Lucene_Net_Store_MMapDirectory_OpenInput_System_String_Lucene_Net_Store_IOContext_" data-uid="Lucene.Net.Store.MMapDirectory.OpenInput(System.String,Lucene.Net.Store.IOContext)">OpenInput(String, IOContext)</h4> |
| <div class="markdown level1 summary"><p>Creates an <a class="xref" href="Lucene.Net.Store.IndexInput.html">IndexInput</a> for the file with the given name. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public override IndexInput OpenInput(string name, IOContext context)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.String</span></td> |
| <td><span class="parametername">name</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.IOContext.html">IOContext</a></td> |
| <td><span class="parametername">context</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><a class="xref" href="Lucene.Net.Store.IndexInput.html">IndexInput</a></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="overrides">Overrides</h5> |
| <div><a class="xref" href="Lucene.Net.Store.Directory.html#Lucene_Net_Store_Directory_OpenInput_System_String_Lucene_Net_Store_IOContext_">Directory.OpenInput(String, IOContext)</a></div> |
| <h3 id="implements">Implements</h3> |
| <div> |
| <span class="xref">System.IDisposable</span> |
| </div> |
| </article> |
| </div> |
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