C++

[ltzehan]

I used std::condition_variable::wait without a predicate. What could go wrong?

[MonkeScripts]

@ltzehan in Cpp there are spurious wakeups where threads awake for no reason. We need a predicate to fix this, it offers another gate that ensures the thread only unblocks at the intended condition.

We can also abuse this predicate, where we can 'notify all()' for all threads in a FIFO semaphore. These threads will wake up, do the predicate check and only the semaphore next-in-line would be unblocked.

Apes together stronk 🦍