2 // Mono.Unix/FileHandleOperations.cs
5 // Jonathan Pryor (jonpryor@vt.edu)
7 // (C) 2005 Jonathan Pryor
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 public sealed /* static */ class FileHandleOperations
38 private FileHandleOperations () {}
40 public static void AdviseFileAccessPattern (int fd, FileAccessPattern pattern, long offset, long len)
42 int r = Native.Syscall.posix_fadvise (fd, offset, len,
43 (Native.PosixFadviseAdvice) pattern);
44 UnixMarshal.ThrowExceptionForLastErrorIf (r);
47 public static void AdviseFileAccessPattern (int fd, FileAccessPattern pattern)
49 AdviseFileAccessPattern (fd, pattern, 0, 0);
52 public static void AdviseFileAccessPattern (FileStream file, FileAccessPattern pattern, long offset, long len)
55 throw new ArgumentNullException ("file");
56 int r = Native.Syscall.posix_fadvise (file.Handle.ToInt32(), offset, len,
57 (Native.PosixFadviseAdvice) pattern);
58 UnixMarshal.ThrowExceptionForLastErrorIf (r);
61 public static void AdviseFileAccessPattern (FileStream file, FileAccessPattern pattern)
63 AdviseFileAccessPattern (file, pattern, 0, 0);
66 public static void AdviseFileAccessPattern (UnixStream stream, FileAccessPattern pattern, long offset, long len)
69 throw new ArgumentNullException ("stream");
70 int r = Native.Syscall.posix_fadvise (stream.Handle, offset, len,
71 (Native.PosixFadviseAdvice) pattern);
72 UnixMarshal.ThrowExceptionForLastErrorIf (r);
75 public static void AdviseFileAccessPattern (UnixStream stream, FileAccessPattern pattern)
77 AdviseFileAccessPattern (stream, pattern, 0, 0);