List of usage examples for org.objectweb.asm Opcodes ACC_SYNCHRONIZED
int ACC_SYNCHRONIZED
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From source file:sg.atom.core.actor.internal.codegenerator.ActorProxyCreator.java
License:Apache License
/** * Creates a synchronized delegate method for a message method. * * @param actorClass the actor class//w w w. j a v a 2s .c om * @param classNameDescriptor the descriptor of the resulting class * @param cw the class writer to write to * @param method the method being invoked * @param simpleDescriptor the descriptor of the method * @param genericSignature the generic signature of the method * @param isSynchronized true to make the method synchronized, false * otherwise */ private static void writeSuperProxyMethod(Class<?> actorClass, String classNameDescriptor, ClassWriter cw, Method method, String simpleDescriptor, String genericSignature, boolean isSynchronized) throws NoSuchMethodException { MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC + (isSynchronized ? Opcodes.ACC_SYNCHRONIZED : 0), String.format(SUPER_CALLER_NAME_FORMAT, method.getName()), simpleDescriptor, genericSignature, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(Opcodes.ALOAD, 0); for (int j = 0; j < method.getParameterTypes().length; j++) { mv.visitVarInsn(Type.getType(method.getParameterTypes()[j]).getOpcode(Opcodes.ILOAD), j + 1); } mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(actorClass), method.getName(), simpleDescriptor); mv.visitInsn(Type.getType(method.getReturnType()).getOpcode(Opcodes.IRETURN)); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", classNameDescriptor, null, l0, l1, 0); for (int j = 0; j < method.getParameterTypes().length; j++) { mv.visitLocalVariable("arg" + j, Type.getDescriptor(method.getParameterTypes()[j]), GenericTypeHelper.getSignatureIfGeneric(method.getGenericParameterTypes()[j]), l0, l1, j + 1); } mv.visitMaxs(0, 0); mv.visitEnd(); }
From source file:sg.atom.core.actor.internal.codegenerator.ActorProxyCreator.java
License:Apache License
/** * Creates and loads the actor's proxy class. * * @param actorClass the Actor class/*w w w . ja v a2 s .c o m*/ * @param acd the actor's class descriptor * @throws ConfigurationException if the agent is not configured correctly */ @SuppressWarnings("unchecked") private static Class<?> generateProxyClass(Class<?> actorClass, final ActorClassDescriptor acd) throws NoSuchMethodException { BeanClassDescriptor bcd = acd.getBeanClassDescriptor(); String className = String.format("%s__ACTORPROXY", actorClass.getName()); final String classNameInternal = className.replace('.', '/'); String classNameDescriptor = "L" + classNameInternal + ";"; final Type actorState = Type .getType(acd.getConcurrencyModel().isMultiThreadingCapable() ? MultiThreadedActorState.class : SingleThreadedActorState.class); ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES); MethodVisitor mv; cw.visit(codeVersion, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_SUPER + Opcodes.ACC_SYNTHETIC, classNameInternal, null, Type.getInternalName(actorClass), new String[] { "org/actorsguildframework/internal/ActorProxy" }); cw.visitSource(null, null); { for (int i = 0; i < acd.getMessageCount(); i++) { cw.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC, String.format(MESSAGE_CALLER_NAME_FORMAT, i), "Lorg/actorsguildframework/internal/MessageCaller;", "Lorg/actorsguildframework/internal/MessageCaller<*>;", null).visitEnd(); } cw.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL, "actorState__ACTORPROXY", actorState.getDescriptor(), null, null).visitEnd(); } BeanCreator.writePropFields(bcd, cw); { mv = cw.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V", null, null); mv.visitCode(); for (int i = 0; i < acd.getMessageCount(); i++) { Class<?> caller = createMessageCaller(acd.getMessage(i).getOwnerClass(), acd.getMessage(i).getMethod()); String mcName = Type.getInternalName(caller); mv.visitTypeInsn(Opcodes.NEW, mcName); mv.visitInsn(Opcodes.DUP); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, mcName, "<init>", "()V"); mv.visitFieldInsn(Opcodes.PUTSTATIC, classNameInternal, String.format(MESSAGE_CALLER_NAME_FORMAT, i), "Lorg/actorsguildframework/internal/MessageCaller;"); } mv.visitInsn(Opcodes.RETURN); mv.visitMaxs(0, 0); mv.visitEnd(); } BeanCreator.writeConstructor(actorClass, bcd, classNameInternal, cw, new BeanCreator.SnippetWriter() { @Override public void write(MethodVisitor mv) { mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitTypeInsn(Opcodes.NEW, actorState.getInternalName()); mv.visitInsn(Opcodes.DUP); mv.visitVarInsn(Opcodes.ALOAD, 1); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, actorState.getInternalName(), "<init>", "(Lorg/actorsguildframework/internal/Controller;Lorg/actorsguildframework/Actor;)V"); mv.visitFieldInsn(Opcodes.PUTFIELD, classNameInternal, "actorState__ACTORPROXY", actorState.getDescriptor()); } }); BeanCreator.writePropAccessors(bcd, classNameInternal, cw); { mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "getState__ACTORPROXYMETHOD", "()Lorg/actorsguildframework/internal/ActorState;", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitFieldInsn(Opcodes.GETFIELD, classNameInternal, "actorState__ACTORPROXY", actorState.getDescriptor()); mv.visitInsn(Opcodes.ARETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", classNameDescriptor, null, l0, l1, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } for (int i = 0; i < acd.getMessageCount(); i++) { MessageImplDescriptor mid = acd.getMessage(i); Method method = mid.getMethod(); String simpleDescriptor = Type.getMethodDescriptor(method); String genericSignature = GenericTypeHelper.getSignature(method); writeProxyMethod(classNameInternal, classNameDescriptor, cw, i, actorState, acd.getConcurrencyModel(), mid, method, simpleDescriptor, genericSignature); writeSuperProxyMethod(actorClass, classNameDescriptor, cw, method, simpleDescriptor, genericSignature, !acd.getConcurrencyModel().isMultiThreadingCapable()); } { mv = cw.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_SYNCHRONIZED, "toString", "()Ljava/lang/String;", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "toString", "()Ljava/lang/String;"); mv.visitInsn(Opcodes.ARETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", classNameDescriptor, null, l0, l1, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } cw.visitEnd(); try { return (Class<? extends ActorProxy>) GenerationUtils.loadClass(className, cw.toByteArray()); } catch (Exception e) { throw new ConfigurationException("Failure loading ActorProxy", e); } }
From source file:sg.atom.core.actor.internal.codegenerator.BeanCreator.java
License:Apache License
/** * Writes the accessor methods for/*w w w .ja v a 2 s . com*/ * * @Prop generated properties. * @param bcd the class descriptor * @param classNameInternal the internal name of this class * @param cw the ClassWriter to write to */ public static void writePropAccessors(BeanClassDescriptor bcd, String classNameInternal, ClassWriter cw) { String classNameDescriptor = "L" + classNameInternal + ";"; MethodVisitor mv; for (int i = 0; i < bcd.getPropertyCount(); i++) { PropertyDescriptor pd = bcd.getProperty(i); if (!pd.getPropertySource().isGenerating()) { continue; } { Type t = Type.getType(pd.getPropertyClass()); Method orig = pd.getGetter(); mv = cw.visitMethod( GenerationUtils.convertAccessModifiers(orig.getModifiers()) + (bcd.isThreadSafe() ? Opcodes.ACC_SYNCHRONIZED : 0), orig.getName(), Type.getMethodDescriptor(orig), GenericTypeHelper.getSignature(orig), null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitFieldInsn(Opcodes.GETFIELD, classNameInternal, String.format(PROP_FIELD_NAME_TEMPLATE, pd.getName()), Type.getDescriptor(pd.getPropertyClass())); mv.visitInsn(t.getOpcode(Opcodes.IRETURN)); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", classNameDescriptor, null, l0, l1, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } if (pd.getAccess().isWritable()) { Type t = Type.getType(pd.getPropertyClass()); Method orig = pd.getSetter(); mv = cw.visitMethod( GenerationUtils.convertAccessModifiers(orig.getModifiers()) + (bcd.isThreadSafe() ? Opcodes.ACC_SYNCHRONIZED : 0), orig.getName(), Type.getMethodDescriptor(orig), GenericTypeHelper.getSignature(orig), null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitVarInsn(t.getOpcode(Opcodes.ILOAD), 1); mv.visitFieldInsn(Opcodes.PUTFIELD, classNameInternal, String.format(PROP_FIELD_NAME_TEMPLATE, pd.getName()), Type.getDescriptor(pd.getPropertyClass())); mv.visitInsn(Opcodes.RETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", classNameDescriptor, null, l0, l1, 0); mv.visitLocalVariable("value", Type.getDescriptor(pd.getPropertyClass()), null, l0, l1, 1); mv.visitMaxs(0, 0); mv.visitEnd(); } } }
From source file:the.bytecode.club.bytecodeviewer.decompilers.bytecode.MethodNodeDecompiler.java
License:Open Source License
private static String getAccessString(int access) { // public, protected, private, abstract, static, // final, synchronized, native & strictfp are permitted List<String> tokens = new ArrayList<String>(); if ((access & Opcodes.ACC_PUBLIC) != 0) tokens.add("public"); if ((access & Opcodes.ACC_PRIVATE) != 0) tokens.add("private"); if ((access & Opcodes.ACC_PROTECTED) != 0) tokens.add("protected"); if ((access & Opcodes.ACC_STATIC) != 0) tokens.add("static"); if ((access & Opcodes.ACC_ABSTRACT) != 0) tokens.add("abstract"); if ((access & Opcodes.ACC_FINAL) != 0) tokens.add("final"); if ((access & Opcodes.ACC_SYNCHRONIZED) != 0) tokens.add("synchronized"); if ((access & Opcodes.ACC_NATIVE) != 0) tokens.add("native"); if ((access & Opcodes.ACC_STRICT) != 0) tokens.add("strictfp"); if ((access & Opcodes.ACC_BRIDGE) != 0) tokens.add("bridge"); if ((access & Opcodes.ACC_VARARGS) != 0) tokens.add("varargs"); if (tokens.size() == 0) return ""; // hackery delimeters StringBuilder sb = new StringBuilder(tokens.get(0)); for (int i = 1; i < tokens.size(); i++) { sb.append(" "); sb.append(tokens.get(i));//from ww w . j a v a 2 s . c om } return sb.toString(); }