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std::experimental::packaged_task (library fundamentals TS)

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This page is about the modified version of std::packaged_task with type-erased allocator support provided by the Library Fundamentals TSes. For the version of packaged_task provided by the concurrency TS supporting the std::future improvements made by that TS, see std::experimental::concurrency_v1::packaged_task.

Defined in header <experimental/future>
template< class > class packaged_task; //not defined
(1) (library fundamentals TS)
template< class R, class ...Args >
class packaged_task<R(Args...)>;
(2) (library fundamentals TS)

std::experimental::fundamentals_v1::packaged_task (and std::experimental::fundamentals_v2::packaged_task) is a modified version of std::packaged_task provided by the library fundamentals TS with support for type-erased allocators.

Contents

[edit] Member types

Member type Definition
allocator_type std::experimental::erased_type

[edit] Member functions

constructs the task object
(public member function) [edit]
retrieves a pointer to the memory resource used by this object to allocate memory
(public member function) [edit]

[edit] Non-member function

specializes the swap algorithm
(function template) [edit]

[edit] Helper classes

specializes the std::uses_allocator type trait
(class template specialization) [edit]

Members identical to std::packaged_task

Member functions

destructs the task object
(public member function of std::packaged_task<R(Args...)>) [edit]
moves the task object
(public member function of std::packaged_task<R(Args...)>) [edit]
checks if the task object has a valid function
(public member function of std::packaged_task<R(Args...)>) [edit]
swaps two task objects
(public member function of std::packaged_task<R(Args...)>) [edit]
Getting the result
returns a std::future associated with the promised result
(public member function of std::packaged_task<R(Args...)>) [edit]
Execution
executes the function
(public member function of std::packaged_task<R(Args...)>) [edit]
executes the function ensuring that the result is ready only once the current thread exits
(public member function of std::packaged_task<R(Args...)>) [edit]
resets the state abandoning any stored results of previous executions
(public member function of std::packaged_task<R(Args...)>) [edit]