BS::task_and_future< R > Struct Template Reference

A class that takes a function with a return value (but no arguments), and constructs a task with no return value along with a future used to retrieve the function's return value once the task is executed. Used by submit_task() and submit_bulk(). More...

#include <BS_thread_pool.hpp>

Collaboration diagram for BS::task_and_future< R >:

Public Member Functions
template<typename F , typename = std::enable_if_t<!std::is_same_v<std::decay_t<F>, task_and_future<R>>>>
	task_and_future (F &&func)

Public Attributes
std::future< R >	future
task_t	task

Detailed Description

template<typename R>
struct BS::task_and_future< R >

A class that takes a function with a return value (but no arguments), and constructs a task with no return value along with a future used to retrieve the function's return value once the task is executed. Used by submit_task() and submit_bulk().

Template Parameters

R	The return type of the function (can be void).

Constructor & Destructor Documentation

task_and_future()

template<typename R >

template<typename F , typename = std::enable_if_t<!std::is_same_v<std::decay_t<F>, task_and_future<R>>>>

BS::task_and_future< R >::task_and_future ( F &&  func )

inlineexplicit

    {
        std::promise<R> promise;
        future = promise.get_future();
        task = [task = std::forward<F>(func), promise = std::move(promise)]() mutable
        {
#ifdef __cpp_exceptions
            try
            {
#endif
                if constexpr (std::is_void_v<R>)
                {
                    task();
                    promise.set_value();
                }
                else
                {
                    promise.set_value(task());
                }
#ifdef __cpp_exceptions
            }
            catch (...)
            {
                try
                {
                    promise.set_exception(std::current_exception());
                }
                catch (...)
                {
                }
            }
#endif
        };
    }

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The documentation for this struct was generated from the following file:

• external/threadpool/include/BS_thread_pool.hpp