public static T EndOperation <T>(IAsyncResult result)
{
DynamoDBAsyncResult asyncResult = result as DynamoDBAsyncResult;
if (asyncResult == null)
{
return(default(T));
}
using (asyncResult)
{
if (!asyncResult.CompletedSynchronously)
{
WaitHandle.WaitAll(new WaitHandle[] { asyncResult.AsyncWaitHandle });
}
if (asyncResult.LastException != null)
{
AWSSDKUtils.PreserveStackTrace(asyncResult.LastException);
throw asyncResult.LastException;
}
return((T)asyncResult.Return);
}
}
public static IAsyncResult BeginOperation(AsyncCall call, AsyncCallback callback, object state)
{
DynamoDBAsyncResult result = new DynamoDBAsyncResult(callback, state);
ThreadPool.QueueUserWorkItem(s => Execute(call, result));
return(result);
}
public static IAsyncResult BeginOperation(AsyncCall call, AsyncCallback callback, object state)
{
DynamoDBAsyncResult result = new DynamoDBAsyncResult(callback, state);
#if (WIN_RT || WINDOWS_PHONE)
System.Threading.Tasks.Task.Run((Action)(() => Execute(call, result)));
#else
ThreadPool.QueueUserWorkItem(s => Execute(call, result));
#endif
return(result);
}
public static void Execute(AsyncCall call, DynamoDBAsyncResult result)
{
try
{
result.Return = call();
}
catch (Exception e)
{
result.LastException = e;
result.Return = null;
}
finally
{
result.SignalWaitHandle();
if (result.Callback != null)
{
result.Callback(result);
}
}
}
public static void Execute(AsyncCall call, DynamoDBAsyncResult result)
{
try
{
result.Return = call();
}
catch (Exception e)
{
result.LastException = e;
result.Return = null;
}
finally
{
result.SignalWaitHandle();
if (result.Callback != null)
{
result.Callback(result);
}
}
}
public static IAsyncResult BeginOperation(AsyncCall call, AsyncCallback callback, object state)
{
DynamoDBAsyncResult result = new DynamoDBAsyncResult(callback, state);
ThreadPool.QueueUserWorkItem(s => Execute(call, result));
return result;
}
