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src/java.base/share/classes/jdk/internal/reflect/NativeMethodAccessorImpl.java

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rev 58565 : 8238358: Implementation of JEP 371: Hidden Classes
Reviewed-by: duke
Contributed-by: mandy.chung@oracle.com, lois.foltan@oracle.com, david.holmes@oracle.com, harold.seigel@oracle.com, serguei.spitsyn@oracle.com, alex.buckley@oracle.com, jamsheed.c.m@oracle.com
rev 58567 : [mq]: rename-isHidden


  31 
  32 /** Used only for the first few invocations of a Method; afterward,
  33     switches to bytecode-based implementation */
  34 
  35 class NativeMethodAccessorImpl extends MethodAccessorImpl {
  36     private final Method method;
  37     private DelegatingMethodAccessorImpl parent;
  38     private int numInvocations;
  39 
  40     NativeMethodAccessorImpl(Method method) {
  41         this.method = method;
  42     }
  43 
  44     public Object invoke(Object obj, Object[] args)
  45         throws IllegalArgumentException, InvocationTargetException
  46     {
  47         // We can't inflate methods belonging to vm-anonymous classes because
  48         // that kind of class can't be referred to by name, hence can't be
  49         // found from the generated bytecode.
  50         if (++numInvocations > ReflectionFactory.inflationThreshold()
  51                 && !method.getDeclaringClass().isHiddenClass()
  52                 && !ReflectUtil.isVMAnonymousClass(method.getDeclaringClass())) {
  53             MethodAccessorImpl acc = (MethodAccessorImpl)
  54                 new MethodAccessorGenerator().
  55                     generateMethod(method.getDeclaringClass(),
  56                                    method.getName(),
  57                                    method.getParameterTypes(),
  58                                    method.getReturnType(),
  59                                    method.getExceptionTypes(),
  60                                    method.getModifiers());
  61             parent.setDelegate(acc);
  62         }
  63 
  64         return invoke0(method, obj, args);
  65     }
  66 
  67     void setParent(DelegatingMethodAccessorImpl parent) {
  68         this.parent = parent;
  69     }
  70 
  71     private static native Object invoke0(Method m, Object obj, Object[] args);


  31 
  32 /** Used only for the first few invocations of a Method; afterward,
  33     switches to bytecode-based implementation */
  34 
  35 class NativeMethodAccessorImpl extends MethodAccessorImpl {
  36     private final Method method;
  37     private DelegatingMethodAccessorImpl parent;
  38     private int numInvocations;
  39 
  40     NativeMethodAccessorImpl(Method method) {
  41         this.method = method;
  42     }
  43 
  44     public Object invoke(Object obj, Object[] args)
  45         throws IllegalArgumentException, InvocationTargetException
  46     {
  47         // We can't inflate methods belonging to vm-anonymous classes because
  48         // that kind of class can't be referred to by name, hence can't be
  49         // found from the generated bytecode.
  50         if (++numInvocations > ReflectionFactory.inflationThreshold()
  51                 && !method.getDeclaringClass().isHidden()
  52                 && !ReflectUtil.isVMAnonymousClass(method.getDeclaringClass())) {
  53             MethodAccessorImpl acc = (MethodAccessorImpl)
  54                 new MethodAccessorGenerator().
  55                     generateMethod(method.getDeclaringClass(),
  56                                    method.getName(),
  57                                    method.getParameterTypes(),
  58                                    method.getReturnType(),
  59                                    method.getExceptionTypes(),
  60                                    method.getModifiers());
  61             parent.setDelegate(acc);
  62         }
  63 
  64         return invoke0(method, obj, args);
  65     }
  66 
  67     void setParent(DelegatingMethodAccessorImpl parent) {
  68         this.parent = parent;
  69     }
  70 
  71     private static native Object invoke0(Method m, Object obj, Object[] args);
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