53     private final String fullClassName;
  54     private final Type type;
  55     private final List<ValueDescriptor> fields;
  56     private final List<AnnotationElement> annotationElements;
  57 
  58     public EventClassBuilder(List<AnnotationElement> annotationElements, List<ValueDescriptor> fields) {
  59         this.fullClassName = "jdk.jfr.DynamicEvent" + idCounter.incrementAndGet();
  60         this.type = Type.getType(fullClassName.replace(".", "/"));
  61         this.fields = fields;
  62         this.annotationElements = annotationElements;
  63     }
  64 
  65     public Class<? extends Event> build() {
  66         buildClassInfo();
  67         buildConstructor();
  68         buildFields();
  69         buildSetMethod();
  70         endClass();
  71         byte[] bytes = classWriter.toByteArray();
  72         ASMToolkit.logASM(fullClassName, bytes);
  73         return SecuritySupport.defineClass(type.getInternalName(), bytes, Event.class.getClassLoader()).asSubclass(Event.class);
  74     }
  75 
  76     private void endClass() {
  77         classWriter.visitEnd();
  78     }
  79 
  80     private void buildSetMethod() {
  81         GeneratorAdapter ga = new GeneratorAdapter(Opcodes.ACC_PUBLIC, SET_METHOD, null, null, classWriter);
  82         int index = 0;
  83         for (ValueDescriptor v : fields) {
  84             ga.loadArg(0);
  85             ga.visitLdcInsn(index);
  86             Label notEqual = new Label();
  87             ga.ifICmp(GeneratorAdapter.NE, notEqual);
  88             ga.loadThis();
  89             ga.loadArg(1);
  90             Type fieldType = ASMToolkit.toType(v);
  91             ga.unbox(ASMToolkit.toType(v));
  92             ga.putField(type, v.getName(), fieldType);
  93             ga.visitInsn(Opcodes.RETURN);

  53     private final String fullClassName;
  54     private final Type type;
  55     private final List<ValueDescriptor> fields;
  56     private final List<AnnotationElement> annotationElements;
  57 
  58     public EventClassBuilder(List<AnnotationElement> annotationElements, List<ValueDescriptor> fields) {
  59         this.fullClassName = "jdk.jfr.DynamicEvent" + idCounter.incrementAndGet();
  60         this.type = Type.getType(fullClassName.replace(".", "/"));
  61         this.fields = fields;
  62         this.annotationElements = annotationElements;
  63     }
  64 
  65     public Class<? extends Event> build() {
  66         buildClassInfo();
  67         buildConstructor();
  68         buildFields();
  69         buildSetMethod();
  70         endClass();
  71         byte[] bytes = classWriter.toByteArray();
  72         ASMToolkit.logASM(fullClassName, bytes);
  73         return SecuritySupport.defineClass(Event.class, bytes).asSubclass(Event.class);
  74     }
  75 
  76     private void endClass() {
  77         classWriter.visitEnd();
  78     }
  79 
  80     private void buildSetMethod() {
  81         GeneratorAdapter ga = new GeneratorAdapter(Opcodes.ACC_PUBLIC, SET_METHOD, null, null, classWriter);
  82         int index = 0;
  83         for (ValueDescriptor v : fields) {
  84             ga.loadArg(0);
  85             ga.visitLdcInsn(index);
  86             Label notEqual = new Label();
  87             ga.ifICmp(GeneratorAdapter.NE, notEqual);
  88             ga.loadThis();
  89             ga.loadArg(1);
  90             Type fieldType = ASMToolkit.toType(v);
  91             ga.unbox(ASMToolkit.toType(v));
  92             ga.putField(type, v.getName(), fieldType);
  93             ga.visitInsn(Opcodes.RETURN);