std :: condition_variable :: wait_until函数

Question

I have a small question about using this method. Will my thread wake up if the std::chrono::high_resolution_clock::now() is greater then the second parameter( abs_time )?

Answer 1

Section 30.2.4 [thread.req.timing] (more-or-less accurate version available at http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3128.html#thread.req.timing ) says:

if Ca > Ct, the waiting function should wake as soon as possible, ie Ca + Di + Dm, since the timeout is already satisfied.

So the answer to your question is "yes".