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