安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- std::future - cppreference. com
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
- std::shared_future - cppreference. com
Unlike std::future, which is only moveable (so only one instance can refer to any particular asynchronous result), std::shared_future is copyable and multiple shared future objects may refer to the same shared state Access to the same shared state from multiple threads is safe if each thread does it through its own copy of a shared_future object
- C++: Use future. get with timeout and without blocking
But you might want to have a queue of completed jobs to check, instead of a single future This queue would only be consumed by your main thread and can be implemented with a non-blocking thread-safe "try_get" call to get next completed jobs As others commented, you may want to wrap your time-saving logic in a job dispatcher class or similar
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