C# 通用对象池
是否可以创建一个通用对象池,在其中创建新对象? 另外,如果这个对象创建可以接收参数,那就太好了C# 通用对象池,c#,object-pooling,C#,Object Pooling,是否可以创建一个通用对象池,在其中创建新对象? 另外,如果这个对象创建可以接收参数,那就太好了 public interface IPoolable { void Dispose(); } public class ObjectPool<T> where T : IPoolable { private List<T> pool; public T Get() {
public interface IPoolable
{
void Dispose();
}
public class ObjectPool<T> where T : IPoolable
{
private List<T> pool;
public T Get()
{
if(pool.count > 0)
{
return pool.Pop();
}
else
{
return new T(); // <- How to do this properly?
}
}
}
public class SomeClass : IPoolable
{
int id;
public SomeClass(int id)
{
this.id = id;
}
public void Dispose()
{
}
}
public class OtherClass : IPoolable
{
string name;
int id;
public OtherClass(string name, int id)
{
this.name = name;
this.id = id;
}
public void Dispose()
{
}
}
SomeClass a = myPool.Get(2);
OtherClass b = myOtherPool.Get("foo", 4);
或者,如果参数不可能,这也可以
SomeClass a = myPool.Get();
a.id = 2;
OtherClass b = myOtherPool.Get();
b.name = "foo";
b.id = 4;
你可以使用
像这样
return (T)Activator.CreateInstance(typeof(T), id);
但是,无法指定类型必须为构造函数提供参数;既不在接口声明中,也不在泛型类型约束中,也不在类继承中
像这样
return (T)Activator.CreateInstance(typeof(T), id);
但是,无法指定类型必须为构造函数提供参数;既不在接口声明中,也不在泛型类型约束中,也不在类继承中。您可以这样做:
public class ObjectPool<T>
{
private Queue<T> _pool = new Queue<T>();
private const int _maxObjects = 100; // Set this to whatever
public T Get(params object[] parameters)
{
T obj;
if (_pool.Count < 1)
obj = (T)Activator.CreateInstance(typeof(T), parameters);
else
obj = _pool.Dequeue();
return obj;
}
public void Put(T obj)
{
if (_pool.Count < _maxObjects)
_pool.Enqueue(obj);
}
}
公共类对象池
{
专用队列_pool=新队列();
private const int _maxObjects=100;//将其设置为任意值
公共T获取(参数对象[]参数)
{
T-obj;
如果(_pool.Count<1)
obj=(T)Activator.CreateInstance(typeof(T),参数);
其他的
obj=_pool.Dequeue();
返回obj;
}
公开作废认沽权证(T obj)
{
如果(_pool.Count<_maxObjects)
_排队(obj);
}
}
您可以这样做:
public class ObjectPool<T>
{
private Queue<T> _pool = new Queue<T>();
private const int _maxObjects = 100; // Set this to whatever
public T Get(params object[] parameters)
{
T obj;
if (_pool.Count < 1)
obj = (T)Activator.CreateInstance(typeof(T), parameters);
else
obj = _pool.Dequeue();
return obj;
}
public void Put(T obj)
{
if (_pool.Count < _maxObjects)
_pool.Enqueue(obj);
}
}
公共类对象池
{
专用队列_pool=新队列();
private const int _maxObjects=100;//将其设置为任意值
公共T获取(参数对象[]参数)
{
T-obj;
如果(_pool.Count<1)
obj=(T)Activator.CreateInstance(typeof(T),参数);
其他的
obj=_pool.Dequeue();
返回obj;
}
公开作废认沽权证(T obj)
{
如果(_pool.Count<_maxObjects)
_排队(obj);
}
}
我在寻找类似的东西,遇到了以下问题:
public class ObjectPool<TObject>
{
private int maxPoolSize;
private SpinLock poolLock;
private Dictionary<Type, Stack<TObject>> poolCache;
private Func<TObject> factory;
public ObjectPool(int poolSize)
{
this.maxPoolSize = poolSize;
this.poolLock = new SpinLock(false);
this.poolCache = new Dictionary<Type, Stack<TObject>>();
}
public ObjectPool(int poolSize, Func<TObject> factory) : this(poolSize)
{
this.factory = factory;
}
public T Rent<T>() where T : TObject
=> (T)this.Rent(typeof(T));
public TObject Rent(Type type)
{
bool lockTaken = false;
Stack<TObject> cachedCollection;
this.poolLock.Enter(ref lockTaken);
try
{
if (!this.poolCache.TryGetValue(type, out cachedCollection))
{
cachedCollection = new Stack<TObject>();
this.poolCache.Add(type, cachedCollection);
}
}
finally
{
if (lockTaken)
{
this.poolLock.Exit(false);
}
}
if (cachedCollection.Count > 0)
{
TObject instance = cachedCollection.Pop();
if (instance != null)
return instance;
}
// New instances don't need to be prepared for re-use, so we just return it.
if (this.factory == null)
{
return (TObject)Activator.CreateInstance(type);
}
else
{
return this.factory();
}
}
public void Return(TObject instanceObject)
{
Stack<TObject> cachedCollection = null;
Type type = typeof(TObject);
bool lockTaken = false;
this.poolLock.Enter(ref lockTaken);
try
{
if (!this.poolCache.TryGetValue(type, out cachedCollection))
{
cachedCollection = new Stack<TObject>();
this.poolCache.Add(type, cachedCollection);
}
if (cachedCollection.Count >= this.maxPoolSize)
{
return;
}
cachedCollection.Push(instanceObject);
}
finally
{
if (lockTaken)
{
this.poolLock.Exit(false);
}
}
}
}
公共类对象池
{
私有int-maxPoolSize;
私有自旋锁池锁;
专用字典池缓存;
私营Func工厂;
公共对象池(int poolSize)
{
this.maxPoolSize=池大小;
this.poolLock=新自旋锁(false);
this.poolCache=新字典();
}
公共对象池(int poolSize,Func工厂):此(poolSize)
{
这个工厂=工厂;
}
公共T租金()其中T:ToObject
=>(T)该租金(类型(T));
公共托宾租金(类型)
{
bool-locktake=false;
堆栈缓存集合;
this.poolLock.Enter(ref locktake);
尝试
{
if(!this.poolCache.TryGetValue(类型,out cachedCollection))
{
cachedCollection=新堆栈();
this.poolCache.Add(类型,cachedCollection);
}
}
最后
{
如果(已锁定)
{
this.poolLock.Exit(false);
}
}
如果(cachedCollection.Count>0)
{
ToObject实例=cachedCollection.Pop();
if(实例!=null)
返回实例;
}
//新实例不需要为重用做好准备,所以我们只返回它。
if(this.factory==null)
{
return(TObject)Activator.CreateInstance(type);
}
其他的
{
返回此.factory();
}
}
公共无效返回(ToObject instanceObject)
{
Stack cachedCollection=null;
类型=类型的类型(TObject);
bool-locktake=false;
this.poolLock.Enter(ref locktake);
尝试
{
if(!this.poolCache.TryGetValue(类型,out cachedCollection))
{
cachedCollection=新堆栈();
this.poolCache.Add(类型,cachedCollection);
}
如果(cachedCollection.Count>=此.maxPoolSize)
{
回来
}
cachedCollection.Push(instanceObject);
}
最后
{
如果(已锁定)
{
this.poolLock.Exit(false);
}
}
}
}
这是一个非常好的实现,我无耻地从中偷了
它支持对从泛型类型参数继承的任何对象进行池化。我正在寻找类似的对象,并遇到以下问题:
public class ObjectPool<TObject>
{
private int maxPoolSize;
private SpinLock poolLock;
private Dictionary<Type, Stack<TObject>> poolCache;
private Func<TObject> factory;
public ObjectPool(int poolSize)
{
this.maxPoolSize = poolSize;
this.poolLock = new SpinLock(false);
this.poolCache = new Dictionary<Type, Stack<TObject>>();
}
public ObjectPool(int poolSize, Func<TObject> factory) : this(poolSize)
{
this.factory = factory;
}
public T Rent<T>() where T : TObject
=> (T)this.Rent(typeof(T));
public TObject Rent(Type type)
{
bool lockTaken = false;
Stack<TObject> cachedCollection;
this.poolLock.Enter(ref lockTaken);
try
{
if (!this.poolCache.TryGetValue(type, out cachedCollection))
{
cachedCollection = new Stack<TObject>();
this.poolCache.Add(type, cachedCollection);
}
}
finally
{
if (lockTaken)
{
this.poolLock.Exit(false);
}
}
if (cachedCollection.Count > 0)
{
TObject instance = cachedCollection.Pop();
if (instance != null)
return instance;
}
// New instances don't need to be prepared for re-use, so we just return it.
if (this.factory == null)
{
return (TObject)Activator.CreateInstance(type);
}
else
{
return this.factory();
}
}
public void Return(TObject instanceObject)
{
Stack<TObject> cachedCollection = null;
Type type = typeof(TObject);
bool lockTaken = false;
this.poolLock.Enter(ref lockTaken);
try
{
if (!this.poolCache.TryGetValue(type, out cachedCollection))
{
cachedCollection = new Stack<TObject>();
this.poolCache.Add(type, cachedCollection);
}
if (cachedCollection.Count >= this.maxPoolSize)
{
return;
}
cachedCollection.Push(instanceObject);
}
finally
{
if (lockTaken)
{
this.poolLock.Exit(false);
}
}
}
}
公共类对象池
{
私有int-maxPoolSize;
私有自旋锁池锁;
专用字典池缓存;
私营Func工厂;
公共对象池(int poolSize)
{
this.maxPoolSize=池大小;
this.poolLock=新自旋锁(false);
this.poolCache=新字典();
}
公共对象池(int poolSize,Func工厂):此(poolSize)
{
这个工厂=工厂;
}
公共T租金()其中T:ToObject
=>(T)该租金(类型(T));
公共托宾租金(类型)
{
bool-locktake=false;
堆栈缓存集合;
this.poolLock.Enter(ref locktake);
尝试
{
if(!this.poolCache.TryGetValue(类型,out cachedCollection))
{
cachedCollection=新堆栈();
this.poolCache.Add(类型,cachedCollection);
}
}
最后
{
如果(已锁定)
{
this.poolLock.Exit(false);
}
}
如果(cachedCollection.Count>0)
{
ToObject实例=cachedCollection.Pop();
if(实例!=nul