On 02.07.2019 15:14, Liu Hao wrote: > 在 2019/7/2 下午8:00, Jonathan Wakely 写道: >> The C++ standard says: >> >> "The library may reuse the value of a thread::id of a terminated >> thread that can no longer be joined." >> >> So that's not a reason to use a handle. > > According to MSDN [1] a thread ID is valid 'until the thread has been > terminated' so I presume a terminated but unclosed thread does not have > a thread ID. >
Good point. In NT world, as long as a handle for a resource exists, the resource itself also exists, even if it's in a state that makes it unusable. Until a handle is explicitly closed, it remains valid. Until all handles to a resource are closed, the resource exists.
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