void ProcessLoadTask()
{
bool invalidate = false;
LoadTask?task = null;
long lastTileLoadTimeMs;
bool stop = false;
#if !PocketPC
Thread ct = Thread.CurrentThread;
string ctid = "Thread[" + ct.ManagedThreadId + "]";
#else
int ctid = 0;
#endif
while (!stop)
{
invalidate = false;
task = null;
lock (tileLoadQueue)
{
while (tileLoadQueue.Count == 0)
{
Debug.WriteLine(ctid + " - Wait " + loadWaitCount + " - " + DateTime.Now.TimeOfDay);
if (++loadWaitCount >= GThreadPoolSize)
{
loadWaitCount = 0;
lock (LastInvalidationLock)
{
LastInvalidation = DateTime.Now;
}
if (OnNeedInvalidation != null)
{
OnNeedInvalidation();
}
lock (LastTileLoadStartEndLock)
{
LastTileLoadEnd = DateTime.Now;
lastTileLoadTimeMs = (long)(LastTileLoadEnd - LastTileLoadStart).TotalMilliseconds;
}
#region -- clear stuff--
{
GMaps.Instance.kiberCacheLock.AcquireWriterLock();
try
{
GMaps.Instance.TilesInMemory.RemoveMemoryOverload();
}
finally
{
GMaps.Instance.kiberCacheLock.ReleaseWriterLock();
}
tileDrawingListLock.AcquireReaderLock();
try
{
Matrix.ClearLevelAndPointsNotIn(Zoom, tileDrawingList);
}
finally
{
tileDrawingListLock.ReleaseReaderLock();
}
}
#endregion
UpdateGroundResolution();
#if UseGC
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
#endif
Debug.WriteLine(ctid + " - OnTileLoadComplete: " + lastTileLoadTimeMs + "ms, MemoryCacheSize: " + GMaps.Instance.MemoryCacheSize + "MB");
if (OnTileLoadComplete != null)
{
OnTileLoadComplete(lastTileLoadTimeMs);
}
}
#if !PocketPC
if (false == Monitor.Wait(tileLoadQueue, WaitForTileLoadThreadTimeout, false))
{
stop = true;
break;
}
#else
wait.Wait();
#endif
}
if (!stop || tileLoadQueue.Count > 0)
{
task = tileLoadQueue.Dequeue();
}
}
if (task.HasValue)
{
try
{
#region -- execute --
var m = Matrix.GetTileWithReadLock(task.Value.Zoom, task.Value.Pos);
if (m == null || m.Overlays.Count == 0)
{
Debug.WriteLine(ctid + " - Fill empty TileMatrix: " + task);
Tile t = new Tile(task.Value.Zoom, task.Value.Pos);
var layers = GMaps.Instance.GetAllLayersOfType(MapType);
foreach (MapType tl in layers)
{
int retry = 0;
do
{
PureImage img;
Exception ex;
// tile number inversion(BottomLeft -> TopLeft) for pergo maps
if (tl == MapType.PergoTurkeyMap)
{
img = GMaps.Instance.GetImageFrom(tl, new Point(task.Value.Pos.X, maxOfTiles.Height - task.Value.Pos.Y), task.Value.Zoom, out ex);
}
else // ok
{
img = GMaps.Instance.GetImageFrom(tl, task.Value.Pos, task.Value.Zoom, out ex);
}
if (img != null)
{
lock (t.Overlays)
{
t.Overlays.Add(img);
}
break;
}
else
{
if (ex != null)
{
lock (FailedLoads)
{
if (!FailedLoads.ContainsKey(task.Value))
{
FailedLoads.Add(task.Value, ex);
if (OnEmptyTileError != null)
{
if (!RaiseEmptyTileError)
{
RaiseEmptyTileError = true;
OnEmptyTileError(task.Value.Zoom, task.Value.Pos);
}
}
}
}
}
if (RetryLoadTile > 0)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + task + " -> empty tile, retry " + retry);
{
Thread.Sleep(1111);
}
}
}
}while(++retry < RetryLoadTile);
}
if (t.Overlays.Count > 0)
{
Matrix.SetTile(t);
}
else
{
t.Clear();
t = null;
}
layers = null;
}
#endregion
}
catch (Exception ex)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + ex.ToString());
}
finally
{
lock (LastInvalidationLock)
{
invalidate = ((DateTime.Now - LastInvalidation).TotalMilliseconds > 111);
if (invalidate)
{
LastInvalidation = DateTime.Now;
}
}
if (invalidate)
{
if (OnNeedInvalidation != null)
{
OnNeedInvalidation();
}
}
#if DEBUG
//else
//{
// lock(LastInvalidationLock)
// {
// Debug.WriteLine(ctid + " - SkipInvalidation, Delta: " + (DateTime.Now - LastInvalidation).TotalMilliseconds + "ms");
// }
//}
#endif
}
}
}
#if !PocketPC
lock (tileLoadQueue)
{
Debug.WriteLine("Quit - " + ct.Name);
GThreadPool.Remove(ct);
}
#endif
}
/// <summary>
/// updates map bounds
/// </summary>
void UpdateBounds()
{
if (MapType == NET.MapType.None)
{
return;
}
lock (tileLoadQueue)
{
tileDrawingListLock.AcquireWriterLock();
try
{
#region -- find tiles around --
tileDrawingList.Clear();
for (int i = -sizeOfMapArea.Width; i <= sizeOfMapArea.Width; i++)
{
for (int j = -sizeOfMapArea.Height; j <= sizeOfMapArea.Height; j++)
{
Point p = centerTileXYLocation;
p.X += i;
p.Y += j;
#if ContinuesMap
// ----------------------------
if (p.X < minOfTiles.Width)
{
p.X += (maxOfTiles.Width + 1);
}
if (p.X > maxOfTiles.Width)
{
p.X -= (maxOfTiles.Width + 1);
}
// ----------------------------
#endif
if (p.X >= minOfTiles.Width && p.Y >= minOfTiles.Height && p.X <= maxOfTiles.Width && p.Y <= maxOfTiles.Height)
{
if (!tileDrawingList.Contains(p))
{
tileDrawingList.Add(p);
}
}
}
}
if (GMaps.Instance.ShuffleTilesOnLoad)
{
Stuff.Shuffle <Point>(tileDrawingList);
}
#endregion
foreach (Point p in tileDrawingList)
{
LoadTask task = new LoadTask(p, Zoom);
{
if (!tileLoadQueue.Contains(task))
{
tileLoadQueue.Enqueue(task);
}
}
}
}
finally
{
tileDrawingListLock.ReleaseWriterLock();
}
#region -- starts loader threads if needed --
#if !PocketPC
while (GThreadPool.Count < GThreadPoolSize)
#else
while (GThreadPool.Count < GThreadPoolSize)
#endif
{
Thread t = new Thread(new ThreadStart(ProcessLoadTask));
{
t.Name = "GMap.NET TileLoader: " + GThreadPool.Count;
t.IsBackground = true;
t.Priority = ThreadPriority.BelowNormal;
}
GThreadPool.Add(t);
Debug.WriteLine("add " + t.Name + " to GThreadPool");
t.Start();
}
#endregion
lock (LastTileLoadStartEndLock)
{
LastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + LastTileLoadStart.TimeOfDay);
}
loadWaitCount = 0;
#if !PocketPC
Monitor.PulseAll(tileLoadQueue);
#else
wait.PulseAll();
#endif
}
if (OnTileLoadStart != null)
{
OnTileLoadStart();
}
}