Cfrgtkky

There are two methods that together must be run in parallel, this is due to a time constraint. The next piece of data to work on is coming every 100ms for example.

 List<Widget> widgetList = new List<Widget>() 

 {

     file list with 100 widget objects

 }

 List<Task> tasks = new List<Task>();



 foreach (Widget widget in widgetList)

 {

    Task t = Task.Run(async () =>

    {

       var result = await widget.Analyze(newData);

       ReportResults(result);

    });

    tasks.Add(t);

  }

  Task.WaitAll(tasks.ToArray());

No it is not a complete code example but should be enough for the question which is as follows:
Can I be sure that ReportResults(result) will run to completion per Task or is it possible that if a Task finishes and calls ReportResults(result) and then another task finishes that it can call ReportResults(result) resulting in unpredictable behavior?

TIA,
Doug

Each method will run to completion, unless something tears down the process or application domain.

As the "call ReportResults(result) resulting in unpredictable behavior", it depends on how ReportResults works.

I would do something like this instead:

var results = await Task.WhenAll(

    for widget in widgetList

    select widget.Analyze(newData));



foreach (var result in results)

{

    ReportResults(result);

}

Note: async-await is a C# 5.0 feature, not available in C# 4.0.