// This BG process is the first one and will be the only one.
// It has to maintain connection to the UWP app, watch lifecycle and child processes,
// and try to re-establish the connection with the APP if it's closed and opened again.
static void StartAsMaster()
{
// Kickstart static constructors.
// NOTE: All classes are static instead of instance, because they're tightly coupled singletons.
// But static constructors are called on demand (at first access or call to the class), not at startup.
IPC.Init();
// Open named pipe that is used exclusively by this background broker process and potentional future
// broker instances. It is used to signal wheter there's already existing broker to ensure there's always
// only one broker at a time. It's necessary because new instance of UWP app cannot reconnect to preexisting
// background process that was spawned by previous instance of the app.
var slavePipe = new NamedPipe(UWP.name, 100);
// If new connection occurs on the pipe, it means another broker process has been spawned by a new UWP instance
// that has no way of knowing of existence of (let alone connecting to) this broker process.
// But we can connect to the UWP from here.
slavePipe.Connection += () => UWP.Connect();
// Lifecycle & selfclose watchdog.
WatchReferences();
// Open exclusive mutex to signify that this is the master mutex process for the app.
mutex = new Mutex(false, UWP.name);
// TODO: is this even needed?
Application.EnableVisualStyles(); // TODO: remove?
Application.SetCompatibleTextRenderingDefault(false); // TODO: remove?
// Run blockingly. And release the mutex when the app quits.
Application.Run();
Close();
}
static void Main()
{
IPC.Init();
Application.Run();
}