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Update TileImageLoader.cs

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This commit is contained in:
ClemensF 2020-09-25 16:14:52 +02:00
parent 664a3d0884
commit c79f534751
1 changed files with 16 additions and 18 deletions
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34
MapControl/Shared/TileImageLoader.cs
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@ -83,32 +83,30 @@ namespace MapControl
tileQueue.Enqueue(tiles);
var newTasks = Math.Min(tileQueue.Count, MaxLoadTasks) - taskCount;
var numTasks = Math.Min(tileQueue.Count, MaxLoadTasks);
var tasks = Enumerable.Range(0, numTasks).Select(n => LoadTilesFromQueueAsync());
if (newTasks > 0)
{
Interlocked.Add(ref taskCount, newTasks);
var tasks = Enumerable.Range(0, newTasks).Select(n => LoadTilesFromQueueAsync());
await Task.WhenAll(tasks).ConfigureAwait(false);
}
await Task.WhenAll(tasks).ConfigureAwait(false);
}
}
private async Task LoadTilesFromQueueAsync()
{
while (tileQueue.TryDequeue(out Tile tile))
if (Interlocked.Increment(ref taskCount) <= MaxLoadTasks)
{
tile.Pending = false;
while (tileQueue.TryDequeue(out Tile tile))
{
tile.Pending = false;
try
{
await loadTileImage(tile).ConfigureAwait(false);
}
catch (Exception ex)
{
Debug.WriteLine("TileImageLoader: {0}/{1}/{2}: {3}", tile.ZoomLevel, tile.XIndex, tile.Y, ex.Message);
try
{
Debug.WriteLine(Thread.CurrentThread.ManagedThreadId);
await loadTileImage(tile).ConfigureAwait(false);
}
catch (Exception ex)
{
Debug.WriteLine("TileImageLoader: {0}/{1}/{2}: {3}", tile.ZoomLevel, tile.XIndex, tile.Y, ex.Message);
}
}
}