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Diffstat (limited to 'dotnet/Qpid.Buffer/RefCountingByteBuffer.cs')
| -rw-r--r-- | dotnet/Qpid.Buffer/RefCountingByteBuffer.cs | 336 |
1 files changed, 0 insertions, 336 deletions
diff --git a/dotnet/Qpid.Buffer/RefCountingByteBuffer.cs b/dotnet/Qpid.Buffer/RefCountingByteBuffer.cs deleted file mode 100644 index 0d3fc4b77b..0000000000 --- a/dotnet/Qpid.Buffer/RefCountingByteBuffer.cs +++ /dev/null @@ -1,336 +0,0 @@ -/* - * - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - * - */ -using System; -using System.Text; - -namespace Qpid.Buffer -{ - public class RefCountingByteBuffer : ByteBuffer - { - private ByteBuffer _buf; - - private int _refCount = 1; - private bool _autoExpand; - private bool _pooled; - - public void Init(ByteBuffer buf) - { - lock (this) - { - _buf = buf; - buf.Clear(); - _autoExpand = false; - _pooled = true; - _refCount = 1; - } - } - - public override void Acquire() - { - lock (this) - { - if (_refCount <= 0) - { - throw new Exception("Already released buffer"); - } - _refCount++; - } - } - - public override void Release() - { - lock (this) - { - if (_refCount <= 0) - { - _refCount = 0; - throw new Exception("Already released buffer. Release called too many times"); - } - - _refCount--; - if (_refCount > 0) - { - return; - } - } - - if (_pooled) - { - Release0(_buf); - } - - lock (_containerStack) - { - _containerStack.Push(this); - } - } - - public ByteBuffer Buf - { - get - { - return _buf; - } - } - - public override bool IsAutoExpand - { - get - { - return _autoExpand; - } - - set - { - _autoExpand = value; - } - } - - public override bool Pooled - { - get - { - return _pooled; - } - - set - { - _pooled = value; - } - } - - public override int Capacity - { - get - { - return _buf.Capacity; - } - } - - public override int Position - { - get - { - return _buf.Position; - } - set - { - AutoExpand(value, 0); - _buf.Position = value; - } - } - - public override int Limit - { - get - { - return _buf.Limit; - } - set - { - AutoExpand(value, 0); - _buf.Limit = value; - } - } - - /*public override void Mark() - { - _buf.Mark(); - } - - public override void Reset() - { - _buf.Reset(); - }*/ - - public override void Clear() - { - _buf.Clear(); - } - - public override void Flip() - { - _buf.Flip(); - } - - public override void Rewind() - { - _buf.Rewind(); - } - - public override int Remaining - { - get - { - return _buf.Remaining; - } - } - - public override byte Get() - { - return _buf.Get(); - } - - public override void Put(byte data) - { - AutoExpand(1); - _buf.Put(data); - } - - public override byte Get(int index) - { - return _buf.Get(index); - } - - public override void Compact() - { - _buf.Compact(); - } - - - public override void Get(byte[] destination) - { - _buf.Get(destination); - } - - public override ushort GetUnsignedShort() - { - return _buf.GetUnsignedShort(); - } - - public override uint GetUnsignedInt() - { - return _buf.GetUnsignedInt(); - } - - public override ulong GetUnsignedLong() - { - return _buf.GetUnsignedLong(); - } - - public override string GetString(uint length, Encoding encoder) - { - return _buf.GetString(length, encoder); - } - - public override void Put(byte[] data) - { - AutoExpand(data.Length); - _buf.Put(data); - } - - public override void Put(byte[] data, int offset, int size) - { - AutoExpand(size); - _buf.Put(data, offset, size); - } - - public override void Put(ushort data) - { - AutoExpand(2); - _buf.Put(data); - } - - public override void Put(uint data) - { - AutoExpand(4); - _buf.Put(data); - } - - public override void Put(ulong data) - { - AutoExpand(8); - _buf.Put(data); - } - - public override void Put(ByteBuffer buf) - { - AutoExpand(buf.Remaining); - _buf.Put(buf); - } - - public override void Expand(int expectedRemaining) - { - if (_autoExpand) - { - int pos = _buf.Position; - int limit = _buf.Limit; - int end = pos + expectedRemaining; - if (end > limit) - { - EnsureCapacity(end); - _buf.Limit = end; - } - } - } - - public override void Expand(int pos, int expectedRemaining) - { - if (_autoExpand) - { - int limit = _buf.Limit; - int end = pos + expectedRemaining; - if (end > limit) - { - EnsureCapacity(end); - _buf.Limit = end; - } - } - } - - private void EnsureCapacity(int requestedCapacity) - { - if (requestedCapacity <= _buf.Capacity) - { - return; - } - - int newCapacity = MINIMUM_CAPACITY; - while (newCapacity < requestedCapacity) - { - newCapacity <<= 1; - } - - ByteBuffer oldBuf = _buf; - ByteBuffer newBuf = Allocate0(newCapacity, false); - newBuf.Clear(); - int pos = oldBuf.Position; - int limit = oldBuf.Limit; - oldBuf.Clear(); - newBuf.Put(oldBuf); - newBuf.Position = pos; - newBuf.Limit = limit; - _buf = newBuf; - Release0(oldBuf); - } - - public override byte[] ToByteArray() - { - return _buf.ToByteArray(); - } - - public override string ToString() - { - return "RefCountingByteBuffer: refs= " + _refCount + "buf=" + base.ToString(); - } - } -} - |