Merge branch '4.8-upstream'

1 files changed, 86 insertions, 546 deletions

diff --git a/src/corelib/concurrent/qtconcurrentmap.h b/src/corelib/concurrent/qtconcurrentmap.h
index 80edf7e..a857ab5 100644
--- a/src/corelib/concurrent/qtconcurrentmap.h
+++ b/src/corelib/concurrent/qtconcurrentmap.h
@@ -110,38 +110,14 @@ namespace QtConcurrent {
 template <typename Sequence, typename MapFunctor>
 QFuture<void> map(Sequence &sequence, MapFunctor map)
 {
-    return startMap(sequence.begin(), sequence.end(), map);
-}
-
-template <typename Sequence, typename T, typename U>
-QFuture<void> map(Sequence &sequence, T (map)(U))
-{
-    return startMap(sequence.begin(), sequence.end(), FunctionWrapper1<T, U>(map));
-}
-
-template <typename Sequence, typename T, typename C>
-QFuture<void> map(Sequence &sequence, T (C::*map)())
-{
-    return startMap(sequence.begin(), sequence.end(), MemberFunctionWrapper<T, C>(map));
+    return startMap(sequence.begin(), sequence.end(), QtPrivate::createFunctionWrapper(map));
 }
 
 // map() on iterators
 template <typename Iterator, typename MapFunctor>
 QFuture<void> map(Iterator begin, Iterator end, MapFunctor map)
 {
-    return startMap(begin, end, map);
-}
-
-template <typename Iterator, typename T, typename U>
-QFuture<void> map(Iterator begin, Iterator end, T (map)(U))
-{
-    return startMap(begin, end, FunctionWrapper1<T, U>(map));
-}
-
-template <typename Iterator, typename T, typename C>
-QFuture<void> map(Iterator begin, Iterator end, T (C::*map)())
-{
-    return startMap(begin, end, MemberFunctionWrapper<T, C>(map));
+    return startMap(begin, end, QtPrivate::createFunctionWrapper(map));
 }
 
 // mappedReduced() for sequences.
@@ -151,88 +127,24 @@ QFuture<ResultType> mappedReduced(const Sequence &sequence,
                                   ReduceFunctor reduce,
                                   ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
 {
-    return startMappedReduced<typename MapFunctor::result_type, ResultType>
-    (sequence, map, reduce, options);
-}
-
-template <typename Sequence, typename MapFunctor, typename T, typename U, typename V>
-QFuture<U> mappedReduced(const Sequence &sequence,
-                         MapFunctor map,
-                         T (reduce)(U &, V),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<typename MapFunctor::result_type, U>
-    (sequence, map, FunctionWrapper2<T, U &, V>(reduce), options);
-}
-
-template <typename Sequence, typename MapFunctor, typename T, typename C, typename U>
-QFuture<C> mappedReduced(const Sequence &sequence,
-                         MapFunctor map,
-                         T (C::*reduce)(U),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<typename MapFunctor::result_type, C>
-    (sequence, map, MemberFunctionWrapper1<T, C, U>(reduce), options);
-}
-
-template <typename ResultType, typename Sequence, typename T, typename U, typename ReduceFunctor>
-QFuture<ResultType> mappedReduced(const Sequence &sequence,
-                                  T (map)(U),
-                                  ReduceFunctor reduce,
-                                  ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, ResultType>
-    (sequence, FunctionWrapper1<T, U>(map), reduce, options);
+    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
+        (sequence,
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
+         options);
 }
 
-template <typename ResultType, typename Sequence, typename T, typename C, typename ReduceFunctor>
-QFuture<ResultType> mappedReduced(const Sequence &sequence,
-                                  T (C::*map)() const,
+template <typename Sequence, typename MapFunctor, typename ReduceFunctor>
+QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> mappedReduced(const Sequence &sequence,
+                                  MapFunctor map,
                                   ReduceFunctor reduce,
                                   ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
 {
-    return startMappedReduced<T, ResultType>
-    (sequence, ConstMemberFunctionWrapper<T, C>(map), reduce, options);
-}
-
-template <typename Sequence, typename T, typename U, typename V, typename W, typename X>
-QFuture<W> mappedReduced(const Sequence &sequence,
-                         T (map)(U),
-                         V (reduce)(W &, X),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, W>
-    (sequence, FunctionWrapper1<T, U>(map), FunctionWrapper2<V, W &, X>(reduce), options);
-}
-
-template <typename Sequence, typename T, typename C, typename U, typename V, typename W>
-QFuture<V> mappedReduced(const Sequence &sequence,
-                         T (C::*map)() const,
-                         U (reduce)(V &, W),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, V> (sequence, ConstMemberFunctionWrapper<T, C>(map),
-                                    FunctionWrapper2<U, V &, W>(reduce), options);
-}
-
-template <typename Sequence, typename T, typename U, typename V, typename C, typename W>
-QFuture<C> mappedReduced(const Sequence &sequence,
-                         T (map)(U),
-                         V (C::*reduce)(W),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, C> (sequence, FunctionWrapper1<T, U>(map),
-                                     MemberFunctionWrapper1<V, C, W>(reduce), options);
-}
-
-template <typename Sequence, typename T, typename C, typename U,typename D, typename V>
-QFuture<D> mappedReduced(const Sequence &sequence,
-                         T (C::*map)() const,
-                         U (D::*reduce)(V),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, D>(sequence, ConstMemberFunctionWrapper<T, C>(map),
-                                    MemberFunctionWrapper1<U, D, V>(reduce), options);
+    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
+        (sequence,
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
+         options);
 }
 
 // mappedReduced() for iterators
@@ -243,295 +155,85 @@ QFuture<ResultType> mappedReduced(Iterator begin,
                                   ReduceFunctor reduce,
                                   ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
 {
-    return startMappedReduced<ResultType, typename MapFunctor::result_type>
-    (begin, end, map, reduce, options);
-}
-
-template <typename Iterator, typename MapFunctor, typename T, typename U, typename V>
-QFuture<U> mappedReduced(Iterator begin,
-                         Iterator end,
-                         MapFunctor map,
-                         T (reduce)(U &, V),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<typename MapFunctor::result_type, U>
-    (begin, end, map, FunctionWrapper2<T, U &, V>(reduce), options);
-}
-
-template <typename Iterator, typename MapFunctor, typename T, typename C, typename U>
-QFuture<C> mappedReduced(Iterator begin,
-                         Iterator end,
-                         MapFunctor map,
-                         T (C::*reduce)(U),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<typename MapFunctor::result_type, C>
-    (begin, end, map, MemberFunctionWrapper1<T, C, U>(reduce), options);
+    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
+        (begin, end,
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
+         options);
 }
 
-template <typename ResultType, typename Iterator, typename T, typename U, typename ReduceFunctor>
-QFuture<ResultType> mappedReduced(Iterator begin,
+template <typename Iterator, typename MapFunctor, typename ReduceFunctor>
+QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> mappedReduced(Iterator begin,
                                   Iterator end,
-                                  T (map)(U),
-                                  ReduceFunctor reduce,
-                                  ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, ResultType>
-    (begin, end, FunctionWrapper1<T, U>(map), reduce, options);
-}
-
-template <typename ResultType, typename Iterator, typename T, typename C, typename ReduceFunctor>
-QFuture<ResultType> mappedReduced(Iterator begin,
-                                  Iterator end,
-                                  T (C::*map)() const,
+                                  MapFunctor map,
                                   ReduceFunctor reduce,
                                   ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
 {
-    return startMappedReduced<T, ResultType>
-    (begin, end, ConstMemberFunctionWrapper<T, C>(map), reduce, options);
-}
-
-template <typename Iterator, typename T, typename U, typename V, typename W, typename X>
-QFuture<W> mappedReduced(Iterator begin,
-                         Iterator end,
-                         T (map)(U),
-                         V (reduce)(W &, X),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, W>
-    (begin, end, FunctionWrapper1<T, U>(map), FunctionWrapper2<V, W &, X>(reduce), options);
-}
-
-template <typename Iterator, typename T, typename C, typename U, typename V, typename W>
-QFuture<V> mappedReduced(Iterator begin,
-                         Iterator end,
-                         T (C::*map)() const,
-                         U (reduce)(V &, W),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, V>(begin, end, ConstMemberFunctionWrapper<T, C>(map),
-                                   FunctionWrapper2<U, V &, W>(reduce), options);
-}
-
-template <typename Iterator, typename T, typename U, typename V, typename C, typename W>
-QFuture<C> mappedReduced(Iterator begin,
-                         Iterator end,
-                         T (map)(U),
-                         V (C::*reduce)(W),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, C>
-    (begin, end, FunctionWrapper1<T, U>(map), MemberFunctionWrapper1<V, C, W>(reduce), options);
-}
-
-template <typename Iterator, typename T, typename C, typename U,typename D, typename V>
-QFuture<D> mappedReduced(Iterator begin,
-                         Iterator end,
-                         T (C::*map)() const,
-                         U (D::*reduce)(V),
-                         ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
-{
-    return startMappedReduced<T, D>(begin, end, ConstMemberFunctionWrapper<T, C>(map),
-                                    MemberFunctionWrapper1<U, D, V>(reduce), options);
+    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
+        (begin, end,
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
+         options);
 }
 
 // mapped() for sequences
 template <typename Sequence, typename MapFunctor>
-QFuture<typename MapFunctor::result_type> mapped(const Sequence &sequence, MapFunctor map)
+QFuture<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType> mapped(const Sequence &sequence, MapFunctor map)
 {
-    return startMapped<typename MapFunctor::result_type>(sequence, map);
-}
-
-template <typename Sequence, typename T, typename U>
-QFuture<T> mapped(const Sequence &sequence, T (map)(U))
-{
-   return startMapped<T>(sequence, FunctionWrapper1<T, U>(map));
-}
-
-template <typename Sequence, typename T, typename C>
-QFuture<T> mapped(const Sequence &sequence, T (C::*map)() const)
-{
-    return startMapped<T>(sequence, ConstMemberFunctionWrapper<T, C>(map));
+    return startMapped<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType>(sequence, QtPrivate::createFunctionWrapper(map));
 }
 
 // mapped() for iterator ranges.
 template <typename Iterator, typename MapFunctor>
-QFuture<typename MapFunctor::result_type> mapped(Iterator begin, Iterator end, MapFunctor map)
-{
-    return startMapped<Q_TYPENAME MapFunctor::result_type>(begin, end, map);
-}
-
-template <typename Iterator, typename T, typename U>
-QFuture<T> mapped(Iterator begin, Iterator end, T (map)(U))
+QFuture<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType> mapped(Iterator begin, Iterator end, MapFunctor map)
 {
-    return startMapped<T>(begin, end, FunctionWrapper1<T, U>(map));
+    return startMapped<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType>(begin, end, QtPrivate::createFunctionWrapper(map));
 }
 
-template <typename Iterator, typename T, typename C>
-QFuture<T> mapped(Iterator begin, Iterator end, T (C::*map)() const)
-{
-    return startMapped<T>(begin, end, ConstMemberFunctionWrapper<T, C>(map));
-}
-
-
+// blockingMap() for sequences
 template <typename Sequence, typename MapFunctor>
 void blockingMap(Sequence &sequence, MapFunctor map)
 {
-    startMap(sequence.begin(), sequence.end(), map).startBlocking();
-}
-
-template <typename Sequence, typename T, typename U>
-void blockingMap(Sequence &sequence, T (map)(U))
-{
-    startMap(sequence.begin(), sequence.end(), QtConcurrent::FunctionWrapper1<T, U>(map)).startBlocking();
-}
-
-template <typename Sequence, typename T, typename C>
-void blockingMap(Sequence &sequence, T (C::*map)())
-{
-    startMap(sequence.begin(), sequence.end(), QtConcurrent::MemberFunctionWrapper<T, C>(map)).startBlocking();
+    startMap(sequence.begin(), sequence.end(), QtPrivate::createFunctionWrapper(map)).startBlocking();
 }
 
+// blockingMap() for iterator ranges
 template <typename Iterator, typename MapFunctor>
 void blockingMap(Iterator begin, Iterator end, MapFunctor map)
 {
-    startMap(begin, end, map).startBlocking();
-}
-
-template <typename Iterator, typename T, typename U>
-void blockingMap(Iterator begin, Iterator end, T (map)(U))
-{
-    startMap(begin, end, QtConcurrent::FunctionWrapper1<T, U>(map)).startBlocking();
-}
-
-template <typename Iterator, typename T, typename C>
-void blockingMap(Iterator begin, Iterator end, T (C::*map)())
-{
-    startMap(begin, end, QtConcurrent::MemberFunctionWrapper<T, C>(map)).startBlocking();
+    startMap(begin, end, QtPrivate::createFunctionWrapper(map)).startBlocking();
 }
 
+// blockingMappedReduced() for sequences
 template <typename ResultType, typename Sequence, typename MapFunctor, typename ReduceFunctor>
 ResultType blockingMappedReduced(const Sequence &sequence,
                                  MapFunctor map,
                                  ReduceFunctor reduce,
                                  ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
 {
-    return QtConcurrent::startMappedReduced<typename MapFunctor::result_type, ResultType>
-    (sequence, map, reduce, options).startBlocking();
-}
-
-template <typename Sequence, typename MapFunctor, typename T, typename U, typename V>
-U blockingMappedReduced(const Sequence &sequence,
-                        MapFunctor map,
-                        T (reduce)(U &, V),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<typename MapFunctor::result_type, U>
-        (sequence,
-         map,
-         QtConcurrent::FunctionWrapper2<T, U &, V>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Sequence, typename MapFunctor, typename T, typename C, typename U>
-C blockingMappedReduced(const Sequence &sequence,
-                        MapFunctor map,
-                        T (C::*reduce)(U),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<typename MapFunctor::result_type, C>
-        (sequence,
-         map,
-         QtConcurrent::MemberFunctionWrapper1<T, C, U>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename ResultType, typename Sequence, typename T, typename U, typename ReduceFunctor>
-ResultType blockingMappedReduced(const Sequence &sequence,
-                                 T (map)(U),
-                                 ReduceFunctor reduce,
-                                 QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, ResultType>
+    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
         (sequence,
-         QtConcurrent::FunctionWrapper1<T, U>(map),
-         reduce,
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
          options)
         .startBlocking();
 }
 
-template <typename ResultType, typename Sequence, typename T, typename C, typename ReduceFunctor>
-ResultType blockingMappedReduced(const Sequence &sequence,
-                                 T (C::*map)() const,
+template <typename MapFunctor, typename ReduceFunctor, typename Sequence>
+typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingMappedReduced(const Sequence &sequence,
+                                 MapFunctor map,
                                  ReduceFunctor reduce,
-                                 QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, ResultType>
-        (sequence,
-         QtConcurrent::ConstMemberFunctionWrapper<T, C>(map),
-         reduce,
-         options)
-        .startBlocking();
-}
-
-template <typename Sequence, typename T, typename U, typename V, typename W, typename X>
-W blockingMappedReduced(const Sequence &sequence,
-                        T (map)(U),
-                        V (reduce)(W &, X),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, W>
-        (sequence,
-         QtConcurrent::FunctionWrapper1<T, U>(map),
-         QtConcurrent::FunctionWrapper2<V, W &, X>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Sequence, typename T, typename C, typename U, typename V, typename W>
-V blockingMappedReduced(const Sequence &sequence,
-                        T (C::*map)() const,
-                        U (reduce)(V &, W),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, V>
-        (sequence,
-         QtConcurrent::ConstMemberFunctionWrapper<T, C>(map),
-         QtConcurrent::FunctionWrapper2<U, V &, W>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Sequence, typename T, typename U, typename V, typename C, typename W>
-C blockingMappedReduced(const Sequence &sequence,
-                        T (map)(U),
-                        V (C::*reduce)(W),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, C>
-        (sequence,
-         QtConcurrent::FunctionWrapper1<T, U>(map),
-         QtConcurrent::MemberFunctionWrapper1<V, C, W>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Sequence, typename T, typename C, typename U,typename D, typename V>
-D blockingMappedReduced(const Sequence &sequence,
-                        T (C::*map)() const,
-                        U (D::*reduce)(V),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
+                                 ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
 {
-    return QtConcurrent::startMappedReduced<T, D>
+    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
         (sequence,
-         QtConcurrent::ConstMemberFunctionWrapper<T, C>(map),
-         QtConcurrent::MemberFunctionWrapper1<U, D, V>(reduce),
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
          options)
         .startBlocking();
 }
 
+// blockingMappedReduced() for iterator ranges
 template <typename ResultType, typename Iterator, typename MapFunctor, typename ReduceFunctor>
 ResultType blockingMappedReduced(Iterator begin,
                                  Iterator end,
@@ -539,134 +241,25 @@ ResultType blockingMappedReduced(Iterator begin,
                                  ReduceFunctor reduce,
                                  QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
 {
-    return QtConcurrent::startMappedReduced<typename MapFunctor::result_type, ResultType>
-        (begin, end, map, reduce, options).startBlocking();
-}
-
-template <typename Iterator, typename MapFunctor, typename T, typename U, typename V>
-U blockingMappedReduced(Iterator begin,
-                        Iterator end,
-                        MapFunctor map,
-                        T (reduce)(U &, V),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<typename MapFunctor::result_type, U>
-        (begin,
-         end,
-         map,
-         QtConcurrent::FunctionWrapper2<T, U &, V>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Iterator, typename MapFunctor, typename T, typename C, typename U>
-C blockingMappedReduced(Iterator begin,
-                        Iterator end,
-                        MapFunctor map,
-                        T (C::*reduce)(U),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<typename MapFunctor::result_type, C>
-        (begin,
-         end,
-         map,
-         QtConcurrent::MemberFunctionWrapper1<T, C, U>(reduce),
+    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
+        (begin, end,
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
          options)
         .startBlocking();
 }
 
-template <typename ResultType, typename Iterator, typename T, typename U, typename ReduceFunctor>
-ResultType blockingMappedReduced(Iterator begin,
+template <typename Iterator, typename MapFunctor, typename ReduceFunctor>
+typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingMappedReduced(Iterator begin,
                                  Iterator end,
-                                 T (map)(U),
-                                 ReduceFunctor reduce,
-                                 QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, ResultType>
-        (begin,
-         end,
-         QtConcurrent::FunctionWrapper1<T, U>(map),
-         reduce,
-         options)
-        .startBlocking();
-}
-
-template <typename ResultType, typename Iterator, typename T, typename C, typename ReduceFunctor>
-ResultType blockingMappedReduced(Iterator begin,
-                                 Iterator end,
-                                 T (C::*map)() const,
+                                 MapFunctor map,
                                  ReduceFunctor reduce,
                                  QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
 {
-    return QtConcurrent::startMappedReduced<T, ResultType>
-        (begin,
-         end,
-         QtConcurrent::ConstMemberFunctionWrapper<T, C>(map),
-         reduce,
-         options)
-        .startBlocking();
-}
-
-template <typename Iterator, typename T, typename U, typename V, typename W, typename X>
-W blockingMappedReduced(Iterator begin,
-                        Iterator end,
-                        T (map)(U),
-                        V (reduce)(W &, X),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, W>
-        (begin,
-         end,
-         QtConcurrent::FunctionWrapper1<T, U>(map),
-         QtConcurrent::FunctionWrapper2<V, W &, X>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Iterator, typename T, typename C, typename U, typename V, typename W>
-V blockingMappedReduced(Iterator begin,
-                        Iterator end,
-                        T (C::*map)() const,
-                        U (reduce)(V &, W),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, V>
-        (begin,
-         end,
-         QtConcurrent::ConstMemberFunctionWrapper<T, C>(map),
-         QtConcurrent::FunctionWrapper2<U, V &, W>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Iterator, typename T, typename U, typename V, typename C, typename W>
-C blockingMappedReduced(Iterator begin,
-                        Iterator end,
-                        T (map)(U),
-                        V (C::*reduce)(W),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, C>
-        (begin,
-         end,
-         QtConcurrent::FunctionWrapper1<T, U>(map),
-         QtConcurrent::MemberFunctionWrapper1<V, C, W>(reduce),
-         options)
-        .startBlocking();
-}
-
-template <typename Iterator, typename T, typename C, typename U,typename D, typename V>
-D blockingMappedReduced(Iterator begin,
-                        Iterator end,
-                        T (C::*map)() const,
-                        U (D::*reduce)(V),
-                        QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
-{
-    return QtConcurrent::startMappedReduced<T, D>
-        (begin,
-         end,
-         QtConcurrent::ConstMemberFunctionWrapper<T, C>(map),
-         QtConcurrent::MemberFunctionWrapper1<U, D, V>(reduce),
+    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
+        (begin, end,
+         QtPrivate::createFunctionWrapper(map),
+         QtPrivate::createFunctionWrapper(reduce),
          options)
         .startBlocking();
 }
@@ -675,97 +268,44 @@ D blockingMappedReduced(Iterator begin,
 template <typename OutputSequence, typename InputSequence, typename MapFunctor>
 OutputSequence blockingMapped(const InputSequence &sequence, MapFunctor map)
 {
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                 QtConcurrent::OrderedReduce);
-}
-
-template <typename OutputSequence, typename InputSequence, typename T, typename U>
-OutputSequence blockingMapped(const InputSequence &sequence, T (map)(U))
-{
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                 QtConcurrent::OrderedReduce);
-}
-
-template <typename OutputSequence, typename InputSequence, typename T, typename C>
-OutputSequence blockingMapped(const InputSequence &sequence, T (C::*map)() const)
-{
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                 QtConcurrent::OrderedReduce);
-}
-#ifndef QT_NO_TEMPLATE_TEMPLATE_PARAMETERS
-
-// overloads for changing the container value type:
-template <template <typename> class Sequence, typename MapFunctor, typename T>
-Sequence<typename MapFunctor::result_type> blockingMapped(const Sequence<T> &sequence, MapFunctor map)
-{
-    typedef Sequence<typename MapFunctor::result_type> OutputSequence;
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                               QtConcurrent::OrderedReduce);
-}
-
-template <template <typename> class Sequence, typename T, typename U, typename V>
-Sequence<U> blockingMapped(const Sequence<T> &sequence, U (map)(V))
-{
-    typedef Sequence<U> OutputSequence;
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                               QtConcurrent::OrderedReduce);
-}
-
-template <template <typename> class Sequence, typename T, typename U, typename C>
-Sequence<U> blockingMapped(const Sequence<T> &sequence, U (C::*map)() const)
-{
-    typedef Sequence<U> OutputSequence;
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                               QtConcurrent::OrderedReduce);
-}
-
-#endif // QT_NO_TEMPLATE_TEMPLATE_PARAMETER
-
-// overloads for changing the container value type from a QStringList:
-template <typename MapFunctor>
-QList<typename MapFunctor::result_type> blockingMapped(const QStringList &sequence, MapFunctor map)
-{
-    typedef QList<typename MapFunctor::result_type> OutputSequence;
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                 QtConcurrent::OrderedReduce);
-}
-
-template <typename U, typename V>
-QList<U> blockingMapped(const QStringList &sequence, U (map)(V))
-{
-    typedef QList<U> OutputSequence;
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                 QtConcurrent::OrderedReduce);
+    return blockingMappedReduced<OutputSequence>
+        (sequence,
+         QtPrivate::createFunctionWrapper(map),
+         &OutputSequence::push_back,
+         QtConcurrent::OrderedReduce);
 }
 
-template <typename U, typename C>
-QList<U> blockingMapped(const QStringList &sequence, U (C::*map)() const)
+template <typename MapFunctor, typename InputSequence>
+typename QtPrivate::MapResultType<InputSequence, MapFunctor>::ResultType blockingMapped(const InputSequence &sequence, MapFunctor map)
 {
-    typedef QList<U> OutputSequence;
-    return blockingMappedReduced(sequence, map, &OutputSequence::push_back,
-                                 QtConcurrent::OrderedReduce);
+    typedef typename QtPrivate::MapResultType<InputSequence, MapFunctor>::ResultType OutputSequence;
+    return blockingMappedReduced<OutputSequence>
+        (sequence,
+         QtPrivate::createFunctionWrapper(map),
+         &OutputSequence::push_back,
+         QtConcurrent::OrderedReduce);
 }
 
 // mapped()  for iterator ranges
 template <typename Sequence, typename Iterator, typename MapFunctor>
 Sequence blockingMapped(Iterator begin, Iterator end, MapFunctor map)
 {
-    return blockingMappedReduced(begin, end, map, &Sequence::push_back,
-                                 QtConcurrent::OrderedReduce);
-}
-
-template <typename Sequence, typename Iterator, typename T, typename U>
-Sequence blockingMapped(Iterator begin, Iterator end, T (map)(U))
-{
-    return blockingMappedReduced(begin, end, map, &Sequence::push_back,
-                                 QtConcurrent::OrderedReduce);
+    return blockingMappedReduced<Sequence>
+        (begin, end,
+         QtPrivate::createFunctionWrapper(map),
+         &Sequence::push_back,
+         QtConcurrent::OrderedReduce);
 }
 
-template <typename Sequence, typename Iterator, typename T, typename C>
-Sequence blockingMapped(Iterator begin, Iterator end, T (C::*map)() const)
-{
-    return blockingMappedReduced(begin, end, map, &Sequence::push_back,
-                                 QtConcurrent::OrderedReduce);
+template <typename Iterator, typename MapFunctor>
+typename QtPrivate::MapResultType<Iterator, MapFunctor>::ResultType blockingMapped(Iterator begin, Iterator end, MapFunctor map)
+{
+    typedef typename QtPrivate::MapResultType<Iterator, MapFunctor>::ResultType OutputSequence;
+    return blockingMappedReduced<OutputSequence>
+        (begin, end,
+         QtPrivate::createFunctionWrapper(map),
+         &OutputSequence::push_back,
+         QtConcurrent::OrderedReduce);
 }
 
 } // namespace QtConcurrent