applicationunlocker.h
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1 /*
2  * Copyright (C) 2009 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_APPLICATIONUNLOCKER_H
31 #define TNT_APPLICATIONUNLOCKER_H
32 
33 #include <tnt/httprequest.h>
34 
35 namespace tnt
36 {
44  {
45  HttpRequest& _request;
46  bool _locked;
47 
48  public:
49  explicit ApplicationUnlocker(HttpRequest& request, bool release = true)
50  : _request(request),
51  _locked(request._applicationScopeLocked)
52  {
53  if (_locked && release)
54  _request.releaseApplicationScopeLock();
55  }
56 
58  {
59  if (_locked)
60  _request.ensureApplicationScopeLock();
61  }
62 
63  void unlock()
64  {
65  _request.releaseApplicationScopeLock();
66  _locked = false;
67  }
68 
69  void lock()
70  {
71  _request.ensureApplicationScopeLock();
72  _locked = true;
73  }
74  };
75 }
76 
77 #endif // TNT_APPLICATIONUNLOCKER_H