2009-09-04 Zoltan Varga <vargaz@gmail.com>

	* SafeBuffer.cs: New net 4.0 class.

svn path=/trunk/mcs/; revision=141368

diff --git a/mcs/class/corlib/System.Runtime.InteropServices/ChangeLog b/mcs/class/corlib/System.Runtime.InteropServices/ChangeLog
index 7b51aa9efb0234fc8f67abf01054e5e164452373..006d30bcd1d085fb8580caea21b8a66cf49a79d4 100644 (file)
--- a/mcs/class/corlib/System.Runtime.InteropServices/ChangeLog
+++ b/mcs/class/corlib/System.Runtime.InteropServices/ChangeLog
@@ -1,3 +1,7 @@
+2009-09-04  Zoltan Varga  <vargaz@gmail.com>
+
+       * SafeBuffer.cs: New net 4.0 class.
+
 2009-04-17 Tom Hindle <tom_hindle@sil.org>
 
        * Marshal.cs: Improved GetExceptionForHR to return real C# exceptions in 

diff --git a/mcs/class/corlib/System.Runtime.InteropServices/SafeBuffer.cs b/mcs/class/corlib/System.Runtime.InteropServices/SafeBuffer.cs
new file mode 100644 (file)
index 0000000..54b16f6
--- /dev/null
+++ b/mcs/class/corlib/System.Runtime.InteropServices/SafeBuffer.cs
@@ -0,0 +1,103 @@
+//
+// SafeBuffer.cs
+//
+// Authors:
+//     Zoltan Varga (vargaz@gmail.com)
+//
+// Copyright (C) 2009, Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+#if NET_4_0
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+using Microsoft.Win32.SafeHandles;
+
+namespace System.Runtime.InteropServices
+{
+       [CLSCompliant (false)]
+       public abstract class SafeBuffer : SafeHandleZeroOrMinusOneIsInvalid, IDisposable {
+               ulong byte_length;
+               bool inited;
+
+               protected SafeBuffer (bool ownsHandle) : base (ownsHandle) {
+               }
+
+               public void Initialize (ulong numBytes) {
+                       byte_length = numBytes;
+                       inited = true;
+               }
+
+               public void Initialize (uint numElements, uint sizeOfEachElement) {
+                       Initialize (numElements * sizeOfEachElement);
+               }
+
+               public void Initialize<T> (uint numElements) where T : struct {
+                       Initialize (numElements, (uint)Marshal.SizeOf (typeof (T)));
+               }
+
+               public unsafe void AcquirePointer (ref byte* pointer) {
+                       if (!inited)
+                               throw new InvalidOperationException ();
+                       bool success = false;
+
+                       DangerousAddRef (ref success);
+                       if (success)
+                               pointer = (byte*)handle;
+               }
+
+               public void ReleasePointer () {
+                       if (!inited)
+                               throw new InvalidOperationException ();
+                       DangerousRelease ();
+               }
+
+               public ulong ByteLength {
+                       get {
+                               return byte_length;
+                       }
+               }
+
+               [MonoTODO]
+               public T Read<T> (ulong byteOffset) where T : struct {
+                       throw new NotImplementedException ();
+               }
+
+               [MonoTODO]
+               public void ReadArray<T> (ulong byteOffset, T[] array, int index, int count) where T : struct {
+                       throw new NotImplementedException ();
+               }
+
+               [MonoTODO]
+               public void Write<T> (ulong byteOffset, T value) where T : struct {
+                       throw new NotImplementedException ();
+               }
+
+               [MonoTODO]
+               public void WriteArray<T> (ulong byteOffset, T[] array, int index, int count) where T : struct {
+                       throw new NotImplementedException ();
+               }
+       }
+}
+
+#endif
\ No newline at end of file