C＃vb：System.Func需要多少内存？ [英] C# vb: System.Func takes how much memory?

问题描述

确切地说，System.Func有多少内存？

如果System.Func是1行或1000行，有没有区别？

$ Func<>是委托类型，一个实例在x86 jitter中占用32个字节的存储空间：

$ b $ b

• 8个字节用于对象头


• 4个字节用于Delegate._methodBase字段
  
• 4个字节为Delegate._methodPtr字段
  
• 4个字节用于Delegate._methodPtrAux字段
  
• 4个字节用于Delegate._target字段


• 4个字节用于MulticastDelegate._invocationCount字段


• MulticastDelegate._invocationList字段的4字节
  

目标方法大小不相关，委托对象只存储方法的地址。

exactly how much memory does a System.Func holds?

Is there any difference if the System.Func is 1 line or 1000 lines?

解决方案

Func<> is a delegate type, an instance takes 32 bytes of storage in the x86 jitter:

• 8 bytes for the object header
• 4 bytes for the Delegate._methodBase field
• 4 bytes for the Delegate._methodPtr field
• 4 bytes for the Delegate._methodPtrAux field
• 4 bytes for the Delegate._target field
• 4 bytes for the MulticastDelegate._invocationCount field
• 4 bytes for the MulticastDelegate._invocationList field

The target method size is not relevant, the delegate object only stores the address of the method.

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