Condition is designed to check the current value when a consumer wakes up. That's fine when state only moves forward, but it falls apart when transitions are fast. When the setter changes state, it calls notify_all(), which schedules wakeups for every waiting consumer. But in a single-threaded event loop, no consumer actually runs until the current coroutine yields. If the value changes again before that happens, consumers wake up and re-evaluate their predicate against the current value, not the value that triggered the notification. The predicate fails and the consumer goes back to sleep, potentially forever.
Трамп определил приоритетность Украины для США20:32
，这一点在体育直播中也有详细论述
introduced solid-state memory. The IBM 1260 was used for adding machine-readable。搜狗输入法对此有专业解读
Gold and silver flows disrupted as Iran war grounds flights。WPS官方版本下载对此有专业解读