题目内容
对生产者一消费者问题的算法描述如下,按照ABCDEF的顺序选择正确的答案编号()。Producer(){ consumer(){while(l){ while(l){(A); (E);(B); (B);Buffer(in)=m; m=buffer(out);in=(in+1)%n; out = (out + 1) % n;(C); (C);(D); (F);} }} }(1)wait(mutex); (2)signal(mutex); (3)wait(empty); (4)signal(full); (5)wait(full); (6) signal(empty)
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