std::experimental::promise (concurrency TS)

 

C++

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Technical Specifications

 

Technical specifications

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

Library fundamentals 2 (library fundamentals 2 TS)

Extensions for parallelism (parallelism TS)

Extensions for concurrency (concurrency TS)

Concepts (concepts TS)

Ranges (ranges TS)

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Extensions for concurrency

std::future extensions

experimental::future

experimental::shared_future

experimental::when_all

experimental::when_any

experimental::make_ready_future

experimental::make_exceptional_future

Latches and barriers

experimental::latch

experimental::barrier

experimental::flex_barrier

Atomic smart pointers

experimental::atomic_shared_ptr

experimental::atomic_weak_ptr

 

This page is about the modified version of std::promise provided by the concurrency TS supporting the std::future improvements made by that TS. For the version of promise with type-erased allocator support provided by the Library Fundamentals TSes, see std::experimental::fundamentals_v2::promise.

Defined in header <experimental/future>
template< class R > class promise;	(1)	(concurrency TS)
template< class R > class promise<R&>;	(2)	(concurrency TS)
template<>          class promise<void>;	(3)	(concurrency TS)

std::experimental::concurrency_v1::promise is a modified version of std::promise provided by the concurrency TS that works with std::experimental::future.

The only change from std::promise is that the get_future() member function returns a std::experimental::future.