table of contents
std::experimental::packaged_task(libraryfundamentalsTS)(3) | C++ Standard Libary | std::experimental::packaged_task(libraryfundamentalsTS)(3) |
NAME¶
std::experimental::packaged_task(libraryfundamentalsTS) - std::experimental::packaged_task(libraryfundamentalsTS)
Synopsis¶
Defined in header <experimental/future>
template< class > class packaged_task; //not defined (1)
(library fundamentals TS)
template< class R, class ...Args > (2) (library fundamentals TS)
class packaged_task<R(Args...)>;
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.
Member types¶
Member type Definition
allocator_type std::experimental::erased_type
Member functions¶
constructor constructs the task object
(public member function)
retrieves a pointer to the memory resource used by this object
get_memory_resource to allocate memory
(public member function)
Non-member function
specializes the swap
std::experimental::swap(std::experimental::packaged_task) algorithm
(function template)
Helper classes¶
specializes the
std::uses_allocator<std::experimental::packaged_task>
std::uses_allocator type trait
(class template
specialization)
Members identical to std::packaged_task
Member functions¶
destructor destructs the task object
(public member function of std::packaged_task<R(Args...)>)
operator= moves the task object
(public member function of std::packaged_task<R(Args...)>)
valid checks if the task object has a valid function
(public member function of std::packaged_task<R(Args...)>)
swap swaps two task objects
(public member function of std::packaged_task<R(Args...)>)
Getting the result¶
get_future returns a std::future associated with the promised
result
(public member function of std::packaged_task<R(Args...)>)
Execution¶
operator() executes the function
(public member function of std::packaged_task<R(Args...)>)
executes the function ensuring that the result is ready
make_ready_at_thread_exit only once the current thread exits
(public member function of std::packaged_task<R(Args...)>)
resets the state abandoning any stored results of previous
reset executions
(public member function of std::packaged_task<R(Args...)>)
2022.07.31 | http://cppreference.com |