public string Execute(string[] args)
{
using var fileStream = File.OpenRead(Filename);
using var image = Image.NewFromStream(fileStream);
Parallel.For(0, 1000, new ParallelOptions {
MaxDegreeOfParallelism = NetVips.ConcurrencyGet()
},
i => RandomCrop(image, TileSize).WriteToFile($"x_{i}.png"));
return("Done!");
}
public string Execute(string[] args)
{
NetVips.CacheSetMax(0);
using var fileStream = File.OpenRead(Filename);
using var image = Image.NewFromStream(fileStream);
for (var i = 0; i < 1000; i++)
{
using var crop = image.Crop(0, 0, 256, 256);
var _ = crop.Avg();
Console.WriteLine($"reference count: {image.RefCount}");
// RefCount should not increase (i.e. operation should be freed)
Debug.Assert(image.RefCount == 2u);
}
var count = 0;
var locker = new object();
Parallel.For(0, 1000, new ParallelOptions {
MaxDegreeOfParallelism = NetVips.ConcurrencyGet()
},
i =>
{
Interlocked.Increment(ref count);
using var crop = image.Crop(0, 0, 256, 256);
lock (locker)
{
var _ = crop.Avg();
Console.WriteLine($"reference count: {image.RefCount} with {count} active threads");
// RefCount -1 must be lower than or equal to the number of active threads
Debug.Assert(image.RefCount - 1 <= (uint)count);
}
Interlocked.Decrement(ref count);
});
return("All done!");
}