1/****************************************************************************
2**
3** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
4** Contact: http://www.qt-project.org/legal
5**
6** This file is part of the QtCore module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Digia. For licensing terms and
14** conditions see http://qt.digia.com/licensing. For further information
15** use the contact form at http://qt.digia.com/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 2.1 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 2.1 requirements
23** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24**
25** In addition, as a special exception, Digia gives you certain additional
26** rights. These rights are described in the Digia Qt LGPL Exception
27** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
28**
29** GNU General Public License Usage
30** Alternatively, this file may be used under the terms of the GNU
31** General Public License version 3.0 as published by the Free Software
32** Foundation and appearing in the file LICENSE.GPL included in the
33** packaging of this file. Please review the following information to
34** ensure the GNU General Public License version 3.0 requirements will be
35** met: http://www.gnu.org/copyleft/gpl.html.
36**
37**
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QLIBRARY_P_H
43#define QLIBRARY_P_H
44
45//
46// W A R N I N G
47// -------------
48//
49// This file is not part of the Qt API. It exists for the convenience
50// of the QLibrary class. This header file may change from
51// version to version without notice, or even be removed.
52//
53// We mean it.
54//
55
56#ifdef Q_WS_WIN
57# include "QtCore/qt_windows.h"
58#endif
59#include "QtCore/qlibrary.h"
60#include "QtCore/qpointer.h"
61#include "QtCore/qstringlist.h"
62#include "QtCore/qplugin.h"
63#include "QtCore/qsharedpointer.h"
64
65#ifndef QT_NO_LIBRARY
66
67QT_BEGIN_NAMESPACE
68
69bool qt_debug_component();
70
71class QSettings;
72class QLibraryPrivate
73{
74public:
75
76#ifdef Q_WS_WIN
77 HINSTANCE
78#else
79 void *
80#endif
81 pHnd;
82
83 QString fileName, qualifiedFileName;
84 QString fullVersion;
85
86 bool load();
87 bool loadPlugin(); // loads and resolves instance
88 bool unload();
89 void release();
90 void *resolve(const char *);
91
92 static QLibraryPrivate *findOrCreate(const QString &fileName, const QString &version = QString());
93
94 QWeakPointer<QObject> inst;
95 QtPluginInstanceFunction instance;
96 uint qt_version;
97 QString lastModified;
98
99 QString errorString;
100 QLibrary::LoadHints loadHints;
101
102 bool isPlugin(QSettings *settings = 0);
103
104
105private:
106 explicit QLibraryPrivate(const QString &canonicalFileName, const QString &version);
107 ~QLibraryPrivate();
108
109 bool load_sys();
110 bool unload_sys();
111 void *resolve_sys(const char *);
112
113 QAtomicInt libraryRefCount;
114 QAtomicInt libraryUnloadCount;
115
116 enum {IsAPlugin, IsNotAPlugin, MightBeAPlugin } pluginState;
117 friend class QLibraryPrivateHasFriends;
118};
119
120QT_END_NAMESPACE
121
122#endif // QT_NO_LIBRARY
123
124#endif // QLIBRARY_P_H
125