2 // System.Threading.Overlapped.cs
5 // Dick Porter (dick@ximian.com)
6 // Gonzalo Paniagua Javier (gonzalo@ximian.com);
8 // (C) Ximian, Inc. http://www.ximian.com
9 // (C) 2004 Novell, Inc. (http://www.novell.com)
13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
15 // Permission is hereby granted, free of charge, to any person obtaining
16 // a copy of this software and associated documentation files (the
17 // "Software"), to deal in the Software without restriction, including
18 // without limitation the rights to use, copy, modify, merge, publish,
19 // distribute, sublicense, and/or sell copies of the Software, and to
20 // permit persons to whom the Software is furnished to do so, subject to
21 // the following conditions:
23 // The above copyright notice and this permission notice shall be
24 // included in all copies or substantial portions of the Software.
26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System.Runtime.InteropServices;
36 using System.Security.Permissions;
38 namespace System.Threading
40 public class Overlapped
51 public Overlapped(int offsetLo, int offsetHi, int hEvent, IAsyncResult ar)
60 unsafe public static void Free (NativeOverlapped *nativeOverlappedPtr)
62 if ((IntPtr) nativeOverlappedPtr == IntPtr.Zero)
63 throw new ArgumentNullException ("nativeOverlappedPtr");
65 Marshal.FreeHGlobal ((IntPtr) nativeOverlappedPtr);
69 unsafe public static Overlapped Unpack (NativeOverlapped *nativeOverlappedPtr)
71 if ((IntPtr) nativeOverlappedPtr == IntPtr.Zero)
72 throw new ArgumentNullException ("nativeOverlappedPtr");
74 Overlapped result = new Overlapped ();
75 result.offsetL = nativeOverlappedPtr->OffsetLow;
76 result.offsetH = nativeOverlappedPtr->OffsetHigh;
77 result.evt = nativeOverlappedPtr->EventHandle;
82 [MonoTODO ("Security - we need to propagate the call stack")]
83 unsafe public NativeOverlapped *Pack (IOCompletionCallback iocb)
85 NativeOverlapped *result = (NativeOverlapped *) Marshal.AllocHGlobal (Marshal.SizeOf (typeof (NativeOverlapped)));
86 result->OffsetLow = offsetL;
87 result->OffsetHigh = offsetH;
88 result->EventHandle = evt;
93 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
94 unsafe public NativeOverlapped *UnsafePack (IOCompletionCallback iocb)
96 // no need to propagate the call stack in the unsafe version
100 public IAsyncResult AsyncResult {
102 set { ares = value; }
105 public int EventHandle {
110 public int OffsetHigh {
111 get { return offsetH; }
112 set { offsetH = value; }
115 public int OffsetLow {
116 get { return offsetL; }
117 set { offsetL = value; }