/// <summary>
/// Performs variations via the controller on another thread or process.
/// </summary>
/// <remarks>
/// Variations may be executed on separate threads or processes
/// depending on the ApplicationType specified in <Dimensions />.
/// </remarks>
public void Perform(VariationItem variation)
{
_CurrentVariation = variation;
_variationStartSignal.Set();
_WaitForSignal(_variationDoneSignal);
}
/// <summary>
/// Loop function that runs on its own thread.
/// It continuously waits for new variations from the
/// controller proxy, and performs them here. The loop terminates
/// when the proxy signals that it is done (disposed).
/// </summary>
private void _RunLoop()
{
GlobalLog.LogStatus("Variation loop beginning...");
// These are used to synchronize the main controller with this proxy.
// For each variation, the main controller sets the xml in storage, signals
// the proxy to run it, and waits for it to finish.
EventWaitHandle controllerInitializedSignal = EventWaitHandle.OpenExisting("Controller_InitializedSignal");
EventWaitHandle variationStartSignal = EventWaitHandle.OpenExisting("VariationStartSignal");
EventWaitHandle variationDoneSignal = EventWaitHandle.OpenExisting("VariationDoneSignal");
// Signal to the main controller that our initialization is done.
_SetEvent(controllerInitializedSignal);
try
{
//
// Continuously wait for new variations to perform.
// Exit when the controller proxy says we're done.
//
while (_WaitForSignal(variationStartSignal))
{
// Run the current variation item.
VariationItem item = _CurrentVariation;
DispatcherOperation op = this.TestDispatcher.BeginInvoke(
DispatcherPriority.SystemIdle,
(DispatcherOperationCallback) delegate(object obj)
{
item.Execute();
return(null);
},
null);
_WaitForOperation(op);
// Let the controller proxy know that the variation
// is has completed.
_SetEvent(variationDoneSignal);
}
this.EndTest();
}
catch (Exception exception)
{
if (TestLog.Current != null)
{
TestLog.Current.LogEvidence("Unexpected exception:\r\n" + exception.ToString());
TestLog.Current.Result = TestResult.Fail;
}
else
{
GlobalLog.LogStatus("Unexpected exception:\r\n" + exception.ToString());
}
}
finally
{
GlobalLog.LogStatus("Variation loop exiting...");
_IsVariationLoopDone = true;
}
}
