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// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
namespace SharpCifs.Smb
{
public class BufferCache
{
private static readonly int MaxBuffers = Config.GetInt("jcifs.smb.maxBuffers", 16);
internal static object[] Cache = new object[MaxBuffers];
private static int _freeBuffers;
public static byte[] GetBuffer()
{
lock (Cache)
{
byte[] buf;
if (_freeBuffers > 0)
{
for (int i = 0; i < MaxBuffers; i++)
{
if (Cache[i] != null)
{
buf = (byte[])Cache[i];
Cache[i] = null;
_freeBuffers--;
return buf;
}
}
}
buf = new byte[SmbComTransaction.TransactionBufSize];
return buf;
}
}
internal static void GetBuffers(SmbComTransaction req, SmbComTransactionResponse rsp)
{
lock (Cache)
{
req.TxnBuf = GetBuffer();
rsp.TxnBuf = GetBuffer();
}
}
public static void ReleaseBuffer(byte[] buf)
{
lock (Cache)
{
if (_freeBuffers < MaxBuffers)
{
for (int i = 0; i < MaxBuffers; i++)
{
if (Cache[i] == null)
{
Cache[i] = buf;
_freeBuffers++;
return;
}
}
}
}
}
}
}
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