paludis  Version 2.6.0
fd_holder.hh
1 /* vim: set sw=4 sts=4 et foldmethod=syntax : */
2 
3 /*
4  * Copyright (c) 2006 Ciaran McCreesh
5  *
6  * This file is part of the Paludis package manager. Paludis is free software;
7  * you can redistribute it and/or modify it under the terms of the GNU General
8  * Public License version 2, as published by the Free Software Foundation.
9  *
10  * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
11  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
13  * details.
14  *
15  * You should have received a copy of the GNU General Public License along with
16  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
17  * Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19 
20 #ifndef PALUDIS_GUARD_PALUDIS_FD_HOLDER_HH
21 #define PALUDIS_GUARD_PALUDIS_FD_HOLDER_HH 1
22 
23 #include <unistd.h>
24 
25 namespace paludis
26 {
27  /**
28  * RAII holder for a file descriptor.
29  */
31  {
32  private:
33  const int _fd;
34  const bool _sync;
35 
36  public:
37  ///\name Basic operations
38  ///\{
39 
40  FDHolder(const int fd, bool sync = true) :
41  _fd(fd),
42  _sync(sync)
43  {
44  }
45 
46  ~FDHolder()
47  {
48  if (-1 != _fd)
49  {
50  if (_sync)
51  ::fsync(_fd);
52  ::close(_fd);
53  }
54  }
55 
56  ///\}
57 
58  /**
59  * Fetch our file descriptor.
60  */
61  operator int () const
62  {
63  return _fd;
64  }
65  };
66 }
67 
68 #endif
Definition: about_metadata-fwd.hh:23
Definition: fd_holder.hh:30
#define PALUDIS_VISIBLE
Definition: attributes.hh:59