std::async - cppreference.com
Oct 28, 2024 · The return type of std::async is std::future<V>, where V is: ... The call to std::async synchronizes with the call to f, and the completion of f is sequenced before making the shared …
c++ - Why should I use std::async? - Stack Overflow
Jul 31, 2013 · C++'s current idea of "async" doesn't really bring anything significant (other than portability) to the table in comparison to other options. Once it gets continuation-on-completion …
std::future - cppreference.com
Mar 12, 2024 · The class template std::future provides a mechanism to access the result of asynchronous operations: An asynchronous operation (created via std::async, …
C++ std::async - Is it just syntactic sugar for launching threads?
Apr 1, 2021 · Is async just syntactic sugar for launching a thread while hiding the promise from view of the programmer? In other words, my question is what is the difference between using …
std::unique_lock - cppreference.com
Apr 21, 2025 · The class unique_lock is a general-purpose mutex ownership wrapper allowing deferred locking, time-constrained attempts at locking, recursive locking, transfer of lock …
В чем разница между std::thread и std::async?
Apr 16, 2024 · std::thread если нужно ручное управление потоками, но в апи ОС лезть не хочется. Для пуула например. std::async если нужно тупо запустить код в другом потоке.
std::thread::join - cppreference.com
Jun 3, 2021 · Blocks the current thread until the thread identified by *this finishes its execution. The completion of the thread identified by *this synchronizes with the corresponding …
How to make sure when task of std::async starts?
Jul 11, 2023 · To answer the question in the title, std::async(f)); (note: no lambda needed) will block until the call to f() has completed. That's because that call ignores the std::future object …
std::shared_future<T>::wait_for - cppreference.com
Aug 28, 2021 · Waits for the result to become available. Blocks until specified timeout_duration has elapsed or the result becomes available, whichever comes first. The return value identifies …
c++ - Is it still valid when the variable passed to `std::async` is out ...
Jun 8, 2022 · 2.The latter one is illegal, since fut_num is passed as a reference to std::async. When fut_num is out of scope, it's illegal to call functions which uses fut_num.