什麼是Java中的Marshal.ReadIntPtr（IntPtr）（C＃）等價物？

Question

Java中的Marshal.ReadIntPtr(IntPtr)（C＃）等效於什麼？

Answer 1

下面的類

在那個階級利益

sun.misc.Unsafe 

方法請看如下：

public native long getAddress(long address); 
public native void putAddress(long address, long value); 
public native long allocateMemory(long size); 
public native long reallocateMemory(long l, long l1); 
public native void setMemory(long l, long l1, byte b); 
public native void copyMemory(long l, long l1, long l2); 

這裏是使用它的一個例子：

import java.lang.reflect.Field; 
import sun.misc.Unsafe; 
public class Direct { 

     public static void main(String... args) { 
      Unsafe unsafe = null; 

      try { 
       Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe"); 
       field.setAccessible(true); 
       unsafe = (sun.misc.Unsafe) field.get(null); 
      } catch (Exception e) { 
       throw new AssertionError(e); 
      } 

      long value = 12345; 
      byte size = 1; 
      long allocateMemory = unsafe.allocateMemory(size); 
      unsafe.putAddress(allocateMemory, value); 
      long readValue = unsafe.getAddress(allocateMemory); 
      System.out.println("read value : " + readValue); 
     } 
    }