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[UWP] Move RunAsync out of VFS implementation

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driver1998 2019-12-05 15:27:08 +08:00 • committed by GH Cao
parent 1392143d14
commit aa19d5180b
4 changed files with 92 additions and 54 deletions
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54
libretro-common/vfs/vfs_implementation_uwp.cpp
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@ -55,62 +55,10 @@ using namespace Windows::Storage::FileProperties;
#include <string/stdstring.h>
#include <retro_environment.h>
#include <uwp/uwp_func.h>
#include <uwp/uwp_async.h>
namespace
{
/* Dear Microsoft
* I really appreciate all the effort you took to not provide any
* synchronous file APIs and block all attempts to synchronously
* wait for the results of async tasks for "smooth user experience",
* but I'm not going to run and rewrite all RetroArch cores for
* async I/O. I hope you like this hack I made instead.
*/
template<typename T>
T RunAsync(std::function<concurrency::task<T>()> func)
{
volatile bool finished = false;
Platform::Exception^ exception = nullptr;
T result;
func().then([&finished, &exception, &result](concurrency::task<T> t) {
try
{
result = t.get();
}
catch (Platform::Exception^ exception_)
{
exception = exception_;
}
finished = true;
});
/* Don't stall the UI thread - prevents a deadlock */
Windows::UI::Core::CoreWindow^ corewindow = Windows::UI::Core::CoreWindow::GetForCurrentThread();
while (!finished)
{
if (corewindow) {
corewindow->Dispatcher->ProcessEvents(Windows::UI::Core::CoreProcessEventsOption::ProcessAllIfPresent);
}
}
if (exception != nullptr)
throw exception;
return result;
}
template<typename T>
T RunAsyncAndCatchErrors(std::function<concurrency::task<T>()> func, T valueOnError)
{
try
{
return RunAsync<T>(func);
}
catch (Platform::Exception^ e)
{
return valueOnError;
}
}
void windowsize_path(wchar_t* path)
{
/* UWP deals with paths containing / instead of \ way worse than normal Windows */