On Thursday, December 26, 2013, Daniel Micay wrote: > A blocking queue is by definition not lock-free/wait-free, > since the wait is known as a lock. It can be done via a spin lock, a > system call like `futex` or the mix used by Linux mutexes but it's a > lock by any other name. >
There are also sleeping waits with a context switch, which in an M:N setup can occur within the same scheduler thread. -- Tony Arcieri
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