But this isn’t hemming to the definition brought up by GP. “I will now, of my own accord, sleep so the OS scheduler takes over” is fairly precise. And it’s diff

But this isn’t hemming to the definition brought up by GP. “I will now, of my own accord, sleep so the OS scheduler takes over” is fairly precise. And it’s different from both just doing an operation that takes time… and different from the program doing an operation that, incidentally, the OS sees and then forces a sleep due to some OS-internal abstraction But you think about this too much and you can easily get to “well now none of my code is blocking”, because of how stuff is implemented. Or, more precisely, “exactly one function blocks, and that function is select()” or something.