When the SPU code finishes or hits a critical error condition, it stops executing and the host process returns from the ioctl call.
当SPU代码执行完成或碰到严重的错误条件时，就会停止执行，宿主进程也会从ioctl调用中返回。
The priority is reset when the process returns to the wait state.
当进程返回到等待状态时，重置该优先级。
The priority is reset when the process returns to the wait state.
当进程返回到等待状态时，重置该优先级。
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