Qt多线程-QtConcurrent并行运算高级API

最新推荐文章于 2025-02-23 19:06:53 发布

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最新推荐文章于 2025-02-23 19:06:53 发布 · 933 阅读

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本文介绍了QtConcurrent模块在Qt中的高级并行运算API，包括map、filter和run的使用，以及如何指定线程池和进行阻塞操作。QtConcurrent::map对容器中的每个元素应用函数，filter根据过滤函数删除元素，run则在另一个线程中执行函数。同时，文章提供了相关API的详细链接和使用示例。

介绍

Qt除了提供基本的QThread实现多线程，并提供QThreadPool实现线程池以外，还提供了QtConcurrent模块用于并行计算。

使用此类需要在pro文件增加QT += concurrent

QtConcurrent命名空间帮助文档，API介绍帮助

API

void blockingFilter(Sequence &sequence, FilterFunction filterFunction)
Sequence blockingFiltered(const Sequence &sequence, FilterFunction filterFunction)
Sequence blockingFiltered(ConstIterator begin, ConstIterator end, FilterFunction filterFunction)
T blockingFilteredReduced(const Sequence &sequence, FilterFunction filterFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce)
T blockingFilteredReduced(ConstIterator begin, ConstIterator end, FilterFunction filterFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce)
void blockingMap(Sequence &sequence, MapFunction function)
void blockingMap(Iterator begin, Iterator end, MapFunction function)
T blockingMapped(const Sequence &sequence, MapFunction function)
T blockingMapped(ConstIterator begin, ConstIterator end, MapFunction function)
T blockingMappedReduced(const Sequence &sequence, MapFunction mapFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce)
T blockingMappedReduced(ConstIterator begin, ConstIterator end, MapFunction mapFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce)
QFuture<void> filter(Sequence &sequence, FilterFunction filterFunction)
QFuture<T> filtered(const Sequence &sequence, FilterFunction filterFunction)
QFuture<T> filtered(ConstIterator begin, ConstIterator end, FilterFunction filterFunction)
QFuture<T> filteredReduced(const Sequence &sequence, FilterFunction filterFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce)
QFuture<T> filteredReduced(ConstIterator begin, ConstIterator end, FilterFunction filterFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce)
QFuture<void> map(Sequence &sequence, MapFunction function)
QFuture<void> map(Iterator begin, Iterator end, MapFunction function)
QFuture<T> mapped(const Sequence &sequence