sterben-01
commented
2 years ago 同样的，在async介绍中。如果选用了deferred，则不会产出新线程。
std::launch::deferred **the task is executed on the calling thread the first time its result is requested (lazy evaluation)**Open sterben-01 opened 2 years ago
sterben-01
commented
2 years ago 同样的，在async介绍中。如果选用了deferred，则不会产出新线程。
std::launch::deferred **the task is executed on the calling thread the first time its result is requested (lazy evaluation)**
您好，您提到了async是包装了packaged_task, promise和future的功能。我个人觉得packaged_task和promise没什么特别大的关联。async应该仅仅是包装了thread 和 packaged_task，让执行异步操作更为方便。