[理工] [計組]-台大94-資工所

看板Grad-ProbAsk作者DiLegend (JOU)時間14年前 (2012/01/27 23:32)推噓1(1推 0噓 5→)

留言6則, 1人參與討論串3/3 (看更多)

(4) Paging avoids the problem of external fragmentation of memory in a multi-programming environment. (5) If a thread generates an exception while inside a critical section protected by a lock, the OS can just kill the thread and release the lock; other threads should be able to continue accessing that critical section without problem. (Assume that locks are implemented by the kernel so that the OS that knows all the locks that any particular thread is holding at any point in time.) 找到的答案是(4)F(5)T (4)應該是T吧 (5)應該是F吧看前面的討論也是認為(4)T 但(5)也有不少認為是T (5)如果真是T 是為何可以不用管有可能C.S 被執行的程式是因為(Assume that locks are implemented by the kernel so that the OS that knows all the locks that any particular thread is holding at any point in time.) 這句話的關係嗎? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.45.64.133

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