public override void MaxFastWritableBytes()
{
IByteBuffer buffer = this.NewBuffer(150, 500).SetWriterIndex(100);
Assert.Equal(50, buffer.WritableBytes);
Assert.Equal(150, buffer.Capacity);
Assert.Equal(500, buffer.MaxCapacity);
Assert.Equal(400, buffer.MaxWritableBytes);
int chunkSize = PooledByteBuf(buffer).MaxLength;
Assert.True(chunkSize >= 150);
int remainingInAlloc = Math.Min(chunkSize - 100, 400);
Assert.Equal(remainingInAlloc, buffer.MaxFastWritableBytes);
// write up to max, chunk alloc should not change (same handle)
long handleBefore = PooledByteBuf(buffer).Handle;
buffer.WriteBytes(new byte[remainingInAlloc]);
Assert.Equal(handleBefore, PooledByteBuf(buffer).Handle);
Assert.Equal(0, buffer.MaxFastWritableBytes);
// writing one more should trigger a reallocation (new handle)
buffer.WriteByte(7);
Assert.NotEqual(handleBefore, PooledByteBuf(buffer).Handle);
// should not exceed maxCapacity even if chunk alloc does
buffer.AdjustCapacity(500);
Assert.Equal(500 - buffer.WriterIndex, buffer.MaxFastWritableBytes);
buffer.Release();
}
public void IncreaseCapacityWrapped()
{
IByteBuffer buffer = this.NewBuffer(8);
IByteBuffer wrapped = buffer.Unwrap();
wrapped.WriteByte(0);
wrapped.SetReaderIndex(wrapped.ReaderIndex + 1);
buffer.SetWriterIndex(buffer.WriterIndex + 1);
wrapped.AdjustCapacity(wrapped.Capacity * 2);
Assert.Equal((byte)0, buffer.ReadByte());
}
public void UsedHeapMemory()
{
IByteBufferAllocator allocator = this.NewAllocator(true);
IByteBufferAllocatorMetric metric = ((IByteBufferAllocatorMetricProvider)allocator).Metric;
Assert.Equal(0, metric.UsedHeapMemory);
IByteBuffer buffer = allocator.HeapBuffer(1024, 4096);
int capacity = buffer.Capacity;
Assert.Equal(this.ExpectedUsedMemory(allocator, capacity), metric.UsedHeapMemory);
// Double the size of the buffer
buffer.AdjustCapacity(capacity << 1);
capacity = buffer.Capacity;
Assert.Equal(this.ExpectedUsedMemory(allocator, capacity), metric.UsedHeapMemory);
buffer.Release();
Assert.Equal(this.ExpectedUsedMemoryAfterRelease(allocator, capacity), metric.UsedHeapMemory);
}
protected override IByteBuffer NewBuffer(int length, int maxCapacity)
{
this.AssumedMaxCapacity = maxCapacity == int.MaxValue;
var buffers = new List <IByteBuffer>();
for (int i = 0; i < length + 45; i += 45)
{
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[1]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[2]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[3]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[4]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[5]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[6]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[7]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[8]));
buffers.Add(Unpooled.Empty);
buffers.Add(Unpooled.WrappedBuffer(new byte[9]));
buffers.Add(Unpooled.Empty);
}
IByteBuffer buffer = Unpooled.WrappedBuffer(int.MaxValue, buffers.ToArray());
// Truncate to the requested capacity.
buffer.AdjustCapacity(length);
Assert.Equal(length, buffer.Capacity);
Assert.Equal(length, buffer.ReadableBytes);
Assert.False(buffer.IsWritable());
buffer.SetWriterIndex(0);
return(buffer);
}
public virtual IByteBuffer AdjustCapacity(int newCapacity)
{
_ = Buf.AdjustCapacity(newCapacity);
return(this);
}