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33 changes: 25 additions & 8 deletions hw1/hw1/Program.cs
Original file line number Diff line number Diff line change
Expand Up @@ -36,24 +36,41 @@ public void Test()
public void Produce()
{
// 可以加东西

Producer.ProduceACake(cake); // 这句话不允许改,但可以在前后加代码

P(sem);
try
{
Producer.ProduceACake(cake); // 这句话不允许改,但可以在前后加代码
pro = true;
}
// 可以加东西
finally
{
V(sem);
}
}

public void Consume()
{
// 可以加东西

Consumer.ConsumeACake(cake); // 这句话不允许改,但可以在前后加代码

if (pro)
{
P(sem);
try
{
Consumer.ConsumeACake(cake); // 这句话不允许改,但可以在前后加代码
}
finally
{
V(sem);
}
}
// 可以加东西
}

// 可以加东西
Semaphore sem = new Semaphore(1, 1);
public bool pro = false;

// ==================================================================================================================
// ==================================================================================================================
}

public class Cake
Expand Down