mcs/class/corlib/ReferenceSources/ExecutionContext.cs

   1
   2 using System.Security;
   3
   4 namespace System.Threading
   5 {
   6         partial class ExecutionContext
   7         {
   8                 internal static ExecutionContext Capture (ref StackCrawlMark stackMark, CaptureOptions options)
   9                 {
  10                         return Capture ((options & CaptureOptions.IgnoreSyncCtx) == 0, false);
  11                 }
  12
  13                 internal static ExecutionContext FastCapture()
  14                 {
  15                         return Capture ();
  16                 }
  17
  18                 [Flags]
  19                 internal enum CaptureOptions
  20                 {
  21                         None = 0x00,
  22
  23                         IgnoreSyncCtx = 0x01,       //Don't flow SynchronizationContext
  24
  25                         OptimizeDefaultCase = 0x02, //Faster in the typical case, but can't show the result to users
  26                                                     // because they could modify the shared default EC.
  27                                                     // Use this only if you won't be exposing the captured EC to users.
  28                 }
  29
  30                 private static readonly ExecutionContext s_dummyDefaultEC = new ExecutionContext();
  31                 static internal ExecutionContext PreAllocatedDefault
  32                 {
  33                         [SecuritySafeCritical]
  34                         get {
  35                                 return s_dummyDefaultEC;
  36                         }
  37                 }
  38
  39                 internal bool IsPreAllocatedDefault
  40                 {
  41                         get
  42                         {
  43                                 return this == s_dummyDefaultEC;
  44                         }
  45                 }
  46         }
  47 }