mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/ExceptionHandler.cs

   1 //
   2 // ExceptionHandler.cs
   3 //
   4 // Author: Duncan Mak (duncan@novell.com)
   5 //
   6 // Copyright (C) 2006 Novell, Inc (http://www.novell.com)
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining
   9 // a copy of this software and associated documentation files (the
  10 // "Software"), to deal in the Software without restriction, including
  11 // without limitation the rights to use, copy, modify, merge, publish,
  12 // distribute, sublicense, and/or sell copies of the Software, and to
  13 // permit persons to whom the Software is furnished to do so, subject to
  14 // the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be
  17 // included in all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  22 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  23 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26 //
  27
  28 using System;
  29 using System.Runtime.ConstrainedExecution;
  30
  31 namespace System.ServiceModel.Dispatcher {
  32
  33         public abstract class ExceptionHandler
  34         {
  35                 static ExceptionHandler async_handler;
  36                 static ExceptionHandler always_handler = new AlwaysHandler ();
  37                 static ExceptionHandler transport_handler = new AlwaysHandler ();
  38
  39                 protected ExceptionHandler () {}
  40
  41                 public static ExceptionHandler AlwaysHandle {
  42                         get { return always_handler; }
  43                 }
  44
  45                 class AlwaysHandler : ExceptionHandler
  46                 {
  47                         public AlwaysHandler () {}
  48
  49                         public override bool HandleException (Exception e)
  50                         {
  51                                 return true;
  52                         }
  53                 }
  54
  55                 public static ExceptionHandler AsynchronousThreadExceptionHandler {
  56
  57                         [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
  58                         get { return async_handler; }
  59
  60                         set { async_handler = value; }
  61                 }
  62
  63                 public static ExceptionHandler TransportExceptionHandler {
  64                         get { return transport_handler; }
  65                         set { transport_handler = value; }
  66                 }
  67
  68                 public abstract bool HandleException (Exception e);
  69         }
  70 }