我试图实现一个通用的线程安全的Cache方法,我想知道我应该如何实现它的锁.
它应该看起来像这样：
//private static readonly lockObject = new Object();
public T GetCache<T>(string key,Func<T> valueFactory...)
{
// try to pull from cache here
lock (lockObject) // I don't want to use static object lock here because then every time a lock is performed,all cached objects in my site have to wait,regarding of the cache key.
{
// cache was empty before we got the lock,check again inside the lock
// cache is still empty,so retreive the value here
// store the value in the cache here
}
// return the cached value here
}
有什么建议么？
谢谢,
阿米尔.
解决方法
这是您使用
mutex的情况
public T GetCache<T>(string key,Func<T> valueFactory...)
{
// note here that I use the key as the name of the mutex
// also here you need to check that the key have no invalid charater
// to used as mutex name.
var mut = new Mutex(true,key);
try
{
// Wait until it is safe to enter.
mut.WaitOne();
// here you create your cache
}
finally
{
// Release the Mutex.
mut.ReleaseMutex();
}
}
