src/corelib/concurrent/qtconcurrentfunctionwrappers.h

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  41
  42 #ifndef QTCONCURRENT_FUNCTIONWRAPPERS_H
  43 #define QTCONCURRENT_FUNCTIONWRAPPERS_H
  44
  45 #include <QtCore/qglobal.h>
  46
  47 #ifndef QT_NO_CONCURRENT
  48
  49 QT_BEGIN_HEADER
  50 QT_BEGIN_NAMESPACE
  51
  52 QT_MODULE(Core)
  53
  54 #ifndef qdoc
  55
  56 namespace QtConcurrent {
  57
  58 template <typename T>
  59 class FunctionWrapper0
  60 {
  61 public:
  62     typedef T (*FunctionPointerType)();
  63     typedef T result_type;
  64     inline FunctionWrapper0(FunctionPointerType _functionPointer)
  65     :functionPointer(_functionPointer) { }
  66
  67     inline T operator()()
  68     {
  69         return functionPointer();
  70     }
  71 private:
  72     FunctionPointerType functionPointer;
  73 };
  74
  75 template <typename T, typename U>
  76 class FunctionWrapper1
  77 {
  78 public:
  79     typedef T (*FunctionPointerType)(U u);
  80     typedef T result_type;
  81     inline FunctionWrapper1(FunctionPointerType _functionPointer)
  82     :functionPointer(_functionPointer) { }
  83
  84     inline T operator()(U u)
  85     {
  86         return functionPointer(u);
  87     }
  88
  89 private:
  90     FunctionPointerType functionPointer;
  91 };
  92
  93 template <typename T, typename U, typename V>
  94 class FunctionWrapper2
  95 {
  96 public:
  97     typedef T (*FunctionPointerType)(U u, V v);
  98     typedef T result_type;
  99     inline FunctionWrapper2(FunctionPointerType _functionPointer)
 100     :functionPointer(_functionPointer) { }
 101
 102     inline T operator()(U u, V v)
 103     {
 104         return functionPointer(u, v);
 105     }
 106 private:
 107     FunctionPointerType functionPointer;
 108 };
 109
 110 template <typename T, typename C>
 111 class MemberFunctionWrapper
 112 {
 113 public:
 114     typedef T (C::*FunctionPointerType)();
 115     typedef T result_type;
 116     inline MemberFunctionWrapper(FunctionPointerType _functionPointer)
 117     :functionPointer(_functionPointer) { }
 118
 119     inline T operator()(C &c)
 120     {
 121         return (c.*functionPointer)();
 122     }
 123 private:
 124     FunctionPointerType functionPointer;
 125 };
 126
 127 template <typename T, typename C, typename U>
 128 class MemberFunctionWrapper1
 129 {
 130 public:
 131     typedef T (C::*FunctionPointerType)(U);
 132     typedef T result_type;
 133
 134     inline MemberFunctionWrapper1(FunctionPointerType _functionPointer)
 135         : functionPointer(_functionPointer)
 136     { }
 137
 138     inline T operator()(C &c, U u)
 139     {
 140         return (c.*functionPointer)(u);
 141     }
 142
 143 private:
 144     FunctionPointerType functionPointer;
 145 };
 146
 147 template <typename T, typename C>
 148 class ConstMemberFunctionWrapper
 149 {
 150 public:
 151     typedef T (C::*FunctionPointerType)() const;
 152     typedef T result_type;
 153     inline ConstMemberFunctionWrapper(FunctionPointerType _functionPointer)
 154     :functionPointer(_functionPointer) { }
 155
 156     inline T operator()(const C &c) const
 157     {
 158         return (c.*functionPointer)();
 159     }
 160 private:
 161     FunctionPointerType functionPointer;
 162 };
 163
 164 } // namespace QtConcurrent.
 165
 166 #endif //qdoc
 167
 168 QT_END_NAMESPACE
 169 QT_END_HEADER
 170
 171 #endif // QT_NO_CONCURRENT
 172
 173 #endif