/// <summary>
/// get curren plane location
/// </summary>
/// <param name="id">id of plane to find location</param>
/// <returns>current location</returns>
public PathPoint GetCurrentLocation(int id)
{
PathPoint point = null;
if (CheckIfActive(id))
{
InterprocessDTO dto = null;
if (_dtos.TryGetValue(id, out dto) && dto != null)
{
using (MemoryMappedFile mmf = MemoryMappedFile.OpenExisting(dto.MemoryMappedFileName))
{
Mutex mutex = Mutex.OpenExisting(dto.MutexName);
mutex.WaitOne();
using (MemoryMappedViewStream stream = mmf.CreateViewStream())
{
BinaryReader reader = new BinaryReader(stream);
var result = reader.ReadString();
point = JsonConvert.DeserializeObject <PathPoint>(result);
}
mutex.ReleaseMutex();
}
}
}
else
{
point = GetPlaneById(id).CurrentLocation;
}
return(point);
}
/// <summary>
/// starts new process, in wich plane starts flight
/// </summary>
/// <param name="planeId">id of plane to start flight</param>
/// <returns>task object wich starts process for flight</returns>
public Task StartFlight(int planeId)
{
if (!CheckIfActive(planeId))
{
var plane = GetPlaneById(planeId);
var planeString = plane.JsonOut();
return(Task.Run(() =>
{
var fileName = Guid.NewGuid().ToString();
var mutexName = Guid.NewGuid().ToString();
var bufferSize = Encoding.Default.GetByteCount(planeString);
using (MemoryMappedFile mmf = MemoryMappedFile.CreateNew(fileName, bufferSize))
{
bool mutexCreated;
Mutex mutex = new Mutex(true, mutexName, out mutexCreated);
using (MemoryMappedViewStream stream = mmf.CreateViewStream())
{
BinaryWriter writer = new BinaryWriter(stream);
writer.Write(planeString);
}
mutex.ReleaseMutex();
InterprocessDTO dto = new InterprocessDTO()
{
MemoryMappedFileName = fileName,
MutexName = mutexName
};
_dtos.Add(planeId, dto);
var process = Process.Start(Display.ToString(), fileName + " " + mutexName);
process?.WaitForExit();
_dtos.Remove(planeId);
}
}));
}
return(null);
}
