83 lines
2.8 KiB
C#
83 lines
2.8 KiB
C#
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//
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// Mono.Unix/FileHandleOperations.cs
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//
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// Authors:
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// Jonathan Pryor (jonpryor@vt.edu)
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//
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// (C) 2005 Jonathan Pryor
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.IO;
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using System.Text;
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using Mono.Unix;
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namespace Mono.Unix {
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public sealed /* static */ class FileHandleOperations
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{
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private FileHandleOperations () {}
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public static void AdviseFileAccessPattern (int fd, FileAccessPattern pattern, long offset, long len)
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{
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int r = Native.Syscall.posix_fadvise (fd, offset, len,
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(Native.PosixFadviseAdvice) pattern);
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UnixMarshal.ThrowExceptionForLastErrorIf (r);
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}
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public static void AdviseFileAccessPattern (int fd, FileAccessPattern pattern)
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{
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AdviseFileAccessPattern (fd, pattern, 0, 0);
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}
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public static void AdviseFileAccessPattern (FileStream file, FileAccessPattern pattern, long offset, long len)
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{
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if (file == null)
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throw new ArgumentNullException ("file");
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int r = Native.Syscall.posix_fadvise (file.Handle.ToInt32(), offset, len,
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(Native.PosixFadviseAdvice) pattern);
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UnixMarshal.ThrowExceptionForLastErrorIf (r);
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}
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public static void AdviseFileAccessPattern (FileStream file, FileAccessPattern pattern)
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{
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AdviseFileAccessPattern (file, pattern, 0, 0);
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}
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public static void AdviseFileAccessPattern (UnixStream stream, FileAccessPattern pattern, long offset, long len)
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{
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if (stream == null)
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throw new ArgumentNullException ("stream");
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int r = Native.Syscall.posix_fadvise (stream.Handle, offset, len,
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(Native.PosixFadviseAdvice) pattern);
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UnixMarshal.ThrowExceptionForLastErrorIf (r);
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}
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public static void AdviseFileAccessPattern (UnixStream stream, FileAccessPattern pattern)
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{
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AdviseFileAccessPattern (stream, pattern, 0, 0);
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}
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}
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}
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// vim: noexpandtab
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