public static Task WrapInContext(this ConfigureAwait runnable, Func <Task> action)
{
return(Task.Factory.StartNew(() =>
{
return action();
}, CancellationToken.None, TaskCreationOptions.None, scheduler)
.Unwrap());
}
public static void Explain(this ConfigureAwait runnable, TextWriter writer)
{
writer.WriteLine(@"
- `ConfigureAwait` controls whether context capturing is enabled
- Context capturing as a simplification can be understood as restoring the TaskScheduler that was visible before the `await`
- Context capturing affects the continuation of an asynchronous method
```
await Method().ConfigureAwait(true|false);
await Continuation(); // <-- affected by line above
```
");
}
public static void PrintStart(this ConfigureAwait runnable)
{
var visible = TaskScheduler.Current == scheduler ? "visible" : "not visible";
Console.WriteLine($"start context is {visible}");
}
public static void PrintAfterDelayConfigureAwait(this ConfigureAwait runnable)
{
var visible = TaskScheduler.Current == scheduler ? "visible" : "not visible";
Console.WriteLine($" after delay with configure await context is {visible}");
}
