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Namhyeon, Go
9d2fb432f7
Add the package ManagedEsent (microsoft/ManagedEsent@d358c07), and WelsonJS.Esent
59 lines
2.3 KiB
C#
59 lines
2.3 KiB
C#
//-----------------------------------------------------------------------
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// <copyright file="Windows81Grbits.cs" company="Microsoft Corporation">
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// Copyright (c) Microsoft Corporation.
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// </copyright>
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//-----------------------------------------------------------------------
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namespace Microsoft.Isam.Esent.Interop.Windows81
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{
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using System;
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using Microsoft.Isam.Esent.Interop.Windows8;
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/// <summary>
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/// Options for <see cref="Windows81Param.EnableShrinkDatabase"/>.
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/// </summary>
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[Flags]
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public enum ShrinkDatabaseGrbit
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{
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/// <summary>
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/// Does not reduce the size of the database during normal operations.
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/// </summary>
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Off = 0x0,
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/// <summary>
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/// Turns on the database shrinking functionality. If this parameter is not
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/// set, then <see cref="Windows8Api.JetResizeDatabase"/> will be unable to reclaim
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/// space to the file system.
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/// Uses the file system's Sparse Files feature to release space
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/// in the middle of a file. When enough rows or tables get free up by
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/// the Version Store Cleanup task, and space is reclaimed, the database
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/// engine will attempt to return it to the file system, via sparse files.
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/// Sparse files are currently only available on NTFS and ReFS file systems.
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/// </summary>
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On = 0x1,
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/// <summary>
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/// After space is release from a table to a the root Available Extent, the database
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/// engine will attempt to release the space back to the file system. This parameter
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/// requires that <see cref="On"/> is also specified.
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/// </summary>
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Realtime = 0x2,
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}
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/// <summary>
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/// Options that have been introduced in Windows 8.1.
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/// </summary>
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public static class Windows81Grbits
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{
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/// <summary>
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/// Only shrink the database to the desired size.
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/// If the resize call would grow the database, do nothing.
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/// In order to use this functionality, <see cref="InstanceParameters.EnableShrinkDatabase"/>
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/// must be set to <see cref="ShrinkDatabaseGrbit.On"/>. Otherwise, an exception may
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/// be thrown.
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/// </summary>
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public const ResizeDatabaseGrbit OnlyShrink = (ResizeDatabaseGrbit)0x2;
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}
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}
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