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, std::packaged_task, or std::promise) can provide a std::future object to the creator of that asynchronous operation. The creator of the asynchronous operation can then use a variety of methods to query, wait for, or extract a value from the std ...

Oct 28, 2024 · The function template std::async runs the function f asynchronously (potentially in a separate thread which might be a part of a thread pool) and returns a std::future that will eventually hold the result of that function call.

Oct 22, 2023 · Transfers the shared state of *this, if any, to a std::shared_future object. Multiple std::shared_future objects may reference the same shared state, which is not possible with std::future. After calling share on a std::future, valid() == false.

Oct 24, 2023 · The class thread represents a single thread of execution. Threads allow multiple functions to execute concurrently. Threads begin execution immediately upon construction of the associated thread object (pending any OS scheduling delays), starting at the top-level function provided as a constructor argument. The return value of the top-level function is ignored and if it terminates by throwing ...

Oct 23, 2023 · The promise is the "push" end of the promise-future communication channel: the operation that stores a value in the shared state synchronizes-with (as defined in std::memory_order) the successful return from any function that is waiting on the shared state (such as std::future::get).

Apr 29, 2025 · C++ includes built-in support for threads, atomic operations, mutual exclusion, condition variables, and futures.

Aug 30, 2023 · Hi all, Check out the first iteration of the public roadmap for Fortnite creators, which includes upcoming features for UEFN, the Fortnite Creative toolset, Discover, and more! We plan to continue expanding this roadmap in the future.

thenApply() is a callback function, which will be executed when supplyAsync() return a value. In code snippet 2, the thread which invoked doSomethingAndReturnA() waits for the function to get executed and return the data. But in some exceptional cases (like making Webservice call and waiting for response), the thread has to wait for long time to get the response, which badly consumes lot of ...

Aug 27, 2021 · Checks if the future refers to a shared state. This is the case only for futures that were not default-constructed or moved from (i.e. returned by std::promise::get_future (), std::packaged_task::get_future () or std::async ()) until the first time get () or share () is called.

Mar 2, 2016 · A future statement is a directive to the compiler that a particular module should be compiled using syntax or semantics that will be available in a specified future release of Python. The future statement is intended to ease migration to future versions of Python that introduce incompatible changes to the language. It allows use of the new features on a per-module basis before the release in ...