程序包 ark.annotation

注释类型 Permanent

@Retention(CLASS)
@Target(TYPE_USE)
public @interface Permanent

Annotates persistent memory objects.

You can use this class to annotate an object in the new statement as a persistent memory object, so that the object will not be recycled by the RC of the Ark compiler.

Take "Integer cache" from "Integer.java" file as an example:

   private static class IntegerCache {
       static final int low = -128;
       static final int high;
       static final Integer cache[];

       static {
           ...;
           for(int k = 0; k < cache.length; k++)
               cache[k] = new @Permanent Integer(j++);
           ...;
       }
       ...;
   }
 

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