/// <summary>
/// Runs code within a new loader context before firing any pending loaders.
/// </summary>
public static async Task Run(Action <DataLoaderContext> action)
{
if (action == null)
{
throw new ArgumentNullException(nameof(action));
}
var loadCtx = new DataLoaderContext();
var syncCtx = new DataLoaderSynchronizationContext(loadCtx);
using (new DataLoaderContextSwitcher(loadCtx))
using (new SynchronizationContextSwitcher(syncCtx))
{
action(loadCtx);
await loadCtx.CompleteAsync().ConfigureAwait(false);
}
}
/// <summary>
/// Runs code within a new loader context before firing any pending loaders.
/// </summary>
public static async Task Run(Func <DataLoaderContext, Task> func)
{
if (func == null)
{
throw new ArgumentNullException(nameof(func));
}
var loadCtx = new DataLoaderContext();
var syncCtx = new DataLoaderSynchronizationContext(loadCtx);
using (new DataLoaderContextSwitcher(loadCtx))
using (new SynchronizationContextSwitcher(syncCtx))
{
var result = func(loadCtx);
await loadCtx.CompleteAsync().ConfigureAwait(false);
await result.ConfigureAwait(false);
}
}
/// <summary>
/// Creates a new instance of a context.
/// </summary>
/// <remarks>
/// Reserved for internal use only - consumers should use the static <see cref="Run"/> method.
/// </remarks>
internal DataLoaderContext()
{
Factory = new DataLoaderFactory(this);
SyncContext = new DataLoaderSynchronizationContext(this);
TaskScheduler = new DataLoaderTaskScheduler(this);
}
/// <remarks>
/// Use the public static <see cref="o:DataLoaderContext.Run"/> methods - they ensure a context's lifecycle is appropriately managed.
/// </remarks>
private DataLoaderContext()
{
SyncContext = new DataLoaderSynchronizationContext(this);
TaskScheduler = new DataLoaderTaskScheduler(this);
_taskFactory = new TaskFactory(CancellationToken.None, TaskCreationOptions.None, TaskContinuationOptions.None, TaskScheduler);
}