Mutex specifically refers to OS/processor level constructs that protect critical sections using algorithms such as the bakery algorithm or special CPU instructi

Mutex specifically refers to OS/processor level constructs that protect critical sections using algorithms such as the bakery algorithm or special CPU instructions. None of these are required to protect the critical section in the example above. You can just use a busy flag. I am not familiar with JS, so this is approximate syntax. while (busy) { await busyIsFalse } busy = true Critical Section busy = false notify busyIsFalse Simple boolean flags will work