private static ArraySegment <byte> LeaseSmallBuffer()
{
if (!_smallBuffers.TryTake(out ArraySegment <byte> result))
{
// use a throw-away buffer as a fallback
result = new ArraySegment <byte>(new byte[_smallBuffers.BytesPerItem]);
}
return(result);
}
public void BufferPoolBasicUsage()
{
var pool = new MicroBufferPool(8, 4);
ArraySegment <byte>[] segments = new ArraySegment <byte> [5];
Assert.Equal(0, pool.InUse);
Assert.Equal(4, pool.Available);
Assert.True(pool.TryTake(out segments[0]));
Assert.True(pool.TryTake(out segments[1]));
Assert.Equal(2, pool.InUse);
Assert.Equal(2, pool.Available);
Assert.True(pool.TryTake(out segments[2]));
Assert.True(pool.TryTake(out segments[3]));
Assert.False(pool.TryTake(out segments[4]));
Assert.Equal(4, pool.InUse);
Assert.Equal(0, pool.Available);
for (int i = 0; i < 4; i++)
{
Assert.Equal(i * 8, segments[i].Offset);
Assert.Equal(8, segments[i].Count);
}
pool.Recycle(segments[3]);
pool.Recycle(segments[1]);
Assert.Equal(2, pool.InUse);
Assert.Equal(2, pool.Available);
Assert.True(pool.TryTake(out segments[1]));
Assert.True(pool.TryTake(out segments[3]));
Assert.False(pool.TryTake(out segments[4]));
Assert.Equal(4, pool.InUse);
Assert.Equal(0, pool.Available);
Assert.Equal(24, segments[1].Offset);
Assert.Equal(8, segments[3].Offset);
for (int i = 0; i < 4; i++)
{
pool.Recycle(segments[i]);
}
Assert.Equal(0, pool.InUse);
Assert.Equal(4, pool.Available);
}