zdata.h
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1 /*
2  * Copyright (C) 2003 Tommi Maekitalo
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * As a special exception, you may use this file as part of a free
10  * software library without restriction. Specifically, if other files
11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
16  * reasons why the executable file might be covered by the GNU Library
17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
23  *
24  * You should have received a copy of the GNU Lesser General Public
25  * License along with this library; if not, write to the Free Software
26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27  */
28 
29 
30 #ifndef TNT_ZDATA_H
31 #define TNT_ZDATA_H
32 
33 #include <cxxtools/atomicity.h>
34 
35 namespace tnt
36 {
37  class Zdata
38  {
39  const char* zptr;
40  const unsigned zdata_len;
41  const unsigned data_len;
42 
43  cxxtools::atomic_t refs;
44  char* data;
45 
46  public:
47  Zdata(const char* zptr_, unsigned zdata_len_, unsigned data_len_)
48  : zptr(zptr_),
49  zdata_len(zdata_len_),
50  data_len(data_len_),
51  refs(0),
52  data(0)
53  { }
54 
55  void addRef();
56  void release();
57 
58  operator const char* () const { return data; }
59  };
60 }
61 
62 #endif // TNT_ZDATA_H
63