public string Read(int key)
{
cacheLock.EnterReadLock();
try
{
return(innerCache[key]);
}
finally
{
cacheLock.ExitReadLock();
}
}
public void Test()
{
System.Console.WriteLine("\nTest case 3 start!");
ReentrantReaderWriterLock rwLock = new ReentrantReaderWriterLock();
ManualResetEvent mre = new ManualResetEvent(false);
int threadCount = 2;
// 测试读锁重入写锁
Task.Run(() =>
{
rwLock.EnterWriteLock();
rwLock.EnterReadLock();
rwLock.EnterReadLock();
System.Console.WriteLine("读锁重入写锁成功");
rwLock.ExitReadLock();
rwLock.ExitReadLock();
rwLock.ExitWriteLock();
Interlocked.Decrement(ref threadCount);
if (threadCount == 0)
{
mre.Set();
}
});
// 测试写锁重入写锁
Task.Run(() =>
{
rwLock.EnterWriteLock();
rwLock.EnterWriteLock();
rwLock.EnterWriteLock();
System.Console.WriteLine("写锁重入写锁成功");
rwLock.ExitWriteLock();
rwLock.ExitWriteLock();
rwLock.ExitWriteLock();
Interlocked.Decrement(ref threadCount);
if (threadCount == 0)
{
mre.Set();
}
});
mre.WaitOne();
// 测试读锁重入读锁
Task.Run(() =>
{
rwLock.EnterReadLock();
rwLock.EnterReadLock();
System.Console.WriteLine("读锁重入读锁成功");
rwLock.EnterReadLock();
rwLock.EnterReadLock();
});
}
