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# qtconcurrentfunctionwrappers.h

Go to the documentation of this file.

    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtCore module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QTCONCURRENT_FUNCTIONWRAPPERS_H
    00043 #define QTCONCURRENT_FUNCTIONWRAPPERS_H
    00044
    00045 #include <QtCore/qglobal.h>
    00046
    00047 #ifndef QT_NO_CONCURRENT
    00048
    00049 QT_BEGIN_HEADER
    00050 QT_BEGIN_NAMESPACE
    00051
    00052 QT_MODULE(Core)
    00053
    00054 #ifndef qdoc
    00055
    00056 namespace QtConcurrent {
    00057
    00058 template <typename T>
    00059 class FunctionWrapper0
    00060 {
    00061 public:
    00062     typedef T (*FunctionPointerType)();
    00063     typedef T result_type;
    00064     inline FunctionWrapper0(FunctionPointerType _functionPointer)
    00065     :functionPointer(_functionPointer) { }
    00066
    00067     inline T operator()()
    00068     {
    00069         return functionPointer();
    00070     }
    00071 private:
    00072     FunctionPointerType functionPointer;
    00073 };
    00074
    00075 template <typename T, typename U>
    00076 class FunctionWrapper1
    00077 {
    00078 public:
    00079     typedef T (*FunctionPointerType)(U u);
    00080     typedef T result_type;
    00081     inline FunctionWrapper1(FunctionPointerType _functionPointer)
    00082     :functionPointer(_functionPointer) { }
    00083
    00084     inline T operator()(U u)
    00085     {
    00086         return functionPointer(u);
    00087     }
    00088
    00089 private:
    00090     FunctionPointerType functionPointer;
    00091 };
    00092
    00093 template <typename T, typename U, typename V>
    00094 class FunctionWrapper2
    00095 {
    00096 public:
    00097     typedef T (*FunctionPointerType)(U u, V v);
    00098     typedef T result_type;
    00099     inline FunctionWrapper2(FunctionPointerType _functionPointer)
    00100     :functionPointer(_functionPointer) { }
    00101
    00102     inline T operator()(U u, V v)
    00103     {
    00104         return functionPointer(u, v);
    00105     }
    00106 private:
    00107     FunctionPointerType functionPointer;
    00108 };
    00109
    00110 template <typename T, typename C>
    00111 class MemberFunctionWrapper
    00112 {
    00113 public:
    00114     typedef T (C::*FunctionPointerType)();
    00115     typedef T result_type;
    00116     inline MemberFunctionWrapper(FunctionPointerType _functionPointer)
    00117     :functionPointer(_functionPointer) { }
    00118
    00119     inline T operator()(C &c)
    00120     {
    00121         return (c.*functionPointer)();
    00122     }
    00123 private:
    00124     FunctionPointerType functionPointer;
    00125 };
    00126
    00127 template <typename T, typename C, typename U>
    00128 class MemberFunctionWrapper1
    00129 {
    00130 public:
    00131     typedef T (C::*FunctionPointerType)(U);
    00132     typedef T result_type;
    00133
    00134     inline MemberFunctionWrapper1(FunctionPointerType _functionPointer)
    00135         : functionPointer(_functionPointer)
    00136     { }
    00137
    00138     inline T operator()(C &c, U u)
    00139     {
    00140         return (c.*functionPointer)(u);
    00141     }
    00142
    00143 private:
    00144     FunctionPointerType functionPointer;
    00145 };
    00146
    00147 template <typename T, typename C>
    00148 class ConstMemberFunctionWrapper
    00149 {
    00150 public:
    00151     typedef T (C::*FunctionPointerType)() const;
    00152     typedef T result_type;
    00153     inline ConstMemberFunctionWrapper(FunctionPointerType _functionPointer)
    00154     :functionPointer(_functionPointer) { }
    00155
    00156     inline T operator()(const C &c) const
    00157     {
    00158         return (c.*functionPointer)();
    00159     }
    00160 private:
    00161     FunctionPointerType functionPointer;
    00162 };
    00163
    00164 } // namespace QtConcurrent.
    00165
    00166 #endif //qdoc
    00167
    00168 QT_END_NAMESPACE
    00169 QT_END_HEADER
    00170
    00171 #endif // QT_NO_CONCURRENT
    00172
    00173 #endif