private static Transaction JitSafeGetContextTransaction(ContextData contextData)
{
SafeIUnknown safeUnknown = null;
if (contextData.WeakDefaultComContext != null)
{
safeUnknown = (SafeIUnknown)contextData.WeakDefaultComContext.Target;
}
if ((contextData.DefaultComContextState == DefaultComContextState.Unknown) || ((contextData.DefaultComContextState == DefaultComContextState.Available) && (safeUnknown == null)))
{
try
{
System.Transactions.NativeMethods.CoGetDefaultContext(-1, ref IID_IObjContext, out safeUnknown);
contextData.WeakDefaultComContext = new WeakReference(safeUnknown);
contextData.DefaultComContextState = DefaultComContextState.Available;
}
catch (EntryPointNotFoundException exception)
{
if (DiagnosticTrace.Verbose)
{
ExceptionConsumedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceBase"), exception);
}
contextData.DefaultComContextState = DefaultComContextState.Unavailable;
}
}
if (contextData.DefaultComContextState == DefaultComContextState.Available)
{
IntPtr zero = IntPtr.Zero;
System.Transactions.NativeMethods.CoGetContextToken(out zero);
if (safeUnknown.DangerousGetHandle() == zero)
{
return(null);
}
}
if (!ContextUtil.IsInTransaction)
{
return(null);
}
return(ContextUtil.SystemTransaction);
}
internal static extern void CoGetDefaultContext(Int32 aptType, ref Guid contextInterface, out SafeIUnknown safeUnknown);
internal static extern void CoGetDefaultContext(int aptType, ref Guid contextInterface, out SafeIUnknown safeUnknown);