Perform an IAsyncOperation Synchronously

Question

I don't have any problems, but just wanted to share what I thought might be a useful piece of code. Sometimes, doing something asynchronously is just not desirable. This function will cause an asynchronous operation to be performed asynchronously - blocking the current thread till it completes.

template <typename TResult>
TResult PerformSynchronously(Windows::Foundation::IAsyncOperation<TResult>^ asyncOp)
{
	Concurrency::event synchronizer;
 	Concurrency::task<TResult>(asyncOp).then([&](TResult taskResult) {
		synchronizer.set();
	}, Concurrency::task_continuation_context::use_arbitrary() );
	synchronizer.wait();
	return asyncOp->GetResults();
}

Here's an example of use:

Platform::String^ ResourcePath(Platform::String^ fileName)
{
	Windows::ApplicationModel::Resources::Core::ResourceCandidate^ resCandidate;
	resCandidate = Windows::ApplicationModel::Resources::Core::ResourceManager::Current->MainResourceMap->GetSubtree("Files")->GetValue(fileName);
	Windows::Storage::StorageFile^ storageFile = PerformSynchronously(resCandidate->ToFileAsync());
	return storageFile->Path;
}

I originally posted this as an edit in another thread.

Answer 1

What's function do you want to achieve.

---

NEU_ShieldEdge

Answer 2

I don't have any questions. I was just sharing what I thought was a useful piece of code. I'll edit it so that's a little more clear. Thanks!