thread join yield
yield方法和join方法
to ‘yield’ means to let go, to give up, to surrender. 放弃
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join方法
thread join（要求当前线程交出cpu执行权、等待t.join()， 等待t线程执行结束）
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image.png
to ‘yield’ means to let go, to give up, to surrender. 放弃
thread join（要求当前线程交出cpu执行权、等待t.join()， 等待t线程执行结束）