Example usage for org.objectweb.asm MethodVisitor visitLdcInsn

List of usage examples for org.objectweb.asm MethodVisitor visitLdcInsn

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitLdcInsn.

Prototype

public void visitLdcInsn(final Object value)

Source Link

Document

Visits a LDC instruction.

Usage

From source file:org.glowroot.agent.advicegen.AdviceGenerator.java

License:Apache License

@RequiresNonNull("methodMetaInternalName")
private void generateMethodMetaConstructor(ClassWriter cw) {
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/lang/reflect/Method;)V", null, null);
    mv.visitCode();/*  www .ja v  a  2s.  co  m*/
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    mv.visitVarInsn(ALOAD, 0);
    if (config.isTraceEntryOrGreater()) {
        String messageTemplate = config.traceEntryMessageTemplate();
        if (messageTemplate.isEmpty() && config.isTransaction()) {
            messageTemplate = config.transactionNameTemplate();
        }
        if (messageTemplate.isEmpty()) {
            mv.visitLdcInsn("<no message template provided>");
        } else {
            mv.visitLdcInsn(messageTemplate);
        }
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/advicegen/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/advicegen/MessageTemplate;",
                false);
    } else {
        mv.visitInsn(ACONST_NULL);
    }
    mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "messageTemplate",
            "Lorg/glowroot/agent/advicegen/MessageTemplate;");
    if (!config.transactionNameTemplate().isEmpty()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(config.transactionNameTemplate());
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/advicegen/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/advicegen/MessageTemplate;",
                false);
        mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "transactionNameTemplate",
                "Lorg/glowroot/agent/advicegen/MessageTemplate;");
    }
    if (!config.transactionUserTemplate().isEmpty()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(config.transactionUserTemplate());
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/advicegen/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/advicegen/MessageTemplate;",
                false);
        mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "transactionUserTemplate",
                "Lorg/glowroot/agent/advicegen/MessageTemplate;");
    }
    int i = 0;
    for (String attrTemplate : config.transactionAttributeTemplates().values()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(attrTemplate);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/advicegen/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/advicegen/MessageTemplate;",
                false);
        mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "transactionAttributeTemplate" + i++,
                "Lorg/glowroot/agent/advicegen/MessageTemplate;");
    }
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.glowroot.agent.weaving.AdviceGenerator.java

License:Apache License

@RequiresNonNull("methodMetaInternalName")
private void addOnBeforeMethod(ClassWriter cw) {
    MethodVisitor mv = visitOnBeforeMethod(cw, "Lorg/glowroot/agent/plugin/api/TraceEntry;");
    mv.visitCode();/*from   w ww  .  ja  va2s  . co  m*/
    if (!config.traceEntryEnabledProperty().isEmpty() && pluginId != null) {
        mv.visitFieldInsn(GETSTATIC, adviceInternalName, "entryEnabled",
                "Lorg/glowroot/agent/plugin/api/config/BooleanProperty;");
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/config/BooleanProperty", "value",
                "()Z", true);
        Label label = new Label();
        mv.visitJumpInsn(IFNE, label);
        // entryEnabled is false, collect timer only
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETSTATIC, adviceInternalName, "timerName",
                "Lorg/glowroot/agent/plugin/api/TimerName;");
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/ThreadContext", "startTimer",
                "(Lorg/glowroot/agent/plugin/api/TimerName;)" + "Lorg/glowroot/agent/plugin/api/Timer;", true);
        mv.visitInsn(ARETURN);
        mv.visitLabel(label);
    }
    mv.visitVarInsn(ALOAD, 0);
    if (config.isTransaction()) {
        String transactionType = config.transactionType();
        if (transactionType.isEmpty()) {
            mv.visitLdcInsn("<no transaction type provided>");
        } else {
            mv.visitLdcInsn(transactionType);
        }
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, methodMetaInternalName, "getTransactionNameTemplate",
                "()Lorg/glowroot/agent/weaving/MessageTemplate;", false);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/GenericMessageSupplier", "create",
                "(Lorg/glowroot/agent/weaving/MessageTemplate;"
                        + "Ljava/lang/Object;Ljava/lang/String;[Ljava/lang/Object;)"
                        + "Lorg/glowroot/agent/weaving/GenericMessageSupplier;",
                false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/glowroot/agent/weaving/GenericMessageSupplier", "getMessageText",
                "()Ljava/lang/String;", false);
    }
    mv.visitVarInsn(ALOAD, 4);
    mv.visitMethodInsn(INVOKEVIRTUAL, methodMetaInternalName, "getMessageTemplate",
            "()Lorg/glowroot/agent/weaving/MessageTemplate;", false);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitVarInsn(ALOAD, 3);
    mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/GenericMessageSupplier", "create",
            "(Lorg/glowroot/agent/weaving/MessageTemplate;"
                    + "Ljava/lang/Object;Ljava/lang/String;[Ljava/lang/Object;)"
                    + "Lorg/glowroot/agent/weaving/GenericMessageSupplier;",
            false);
    mv.visitFieldInsn(GETSTATIC, adviceInternalName, "timerName", "Lorg/glowroot/agent/plugin/api/TimerName;");
    if (config.isTransaction()) {
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/OptionalThreadContext",
                "startTransaction",
                "(Ljava/lang/String;Ljava/lang/String;" + "Lorg/glowroot/agent/plugin/api/MessageSupplier;"
                        + "Lorg/glowroot/agent/plugin/api/TimerName;)"
                        + "Lorg/glowroot/agent/plugin/api/TraceEntry;",
                true);
    } else {
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/ThreadContext", "startTraceEntry",
                "(Lorg/glowroot/agent/plugin/api/MessageSupplier;"
                        + "Lorg/glowroot/agent/plugin/api/TimerName;)"
                        + "Lorg/glowroot/agent/plugin/api/TraceEntry;",
                true);
    }
    addCodeForOptionalTransactionAttributes(mv);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.glowroot.agent.weaving.AdviceGenerator.java

License:Apache License

private void addCodeForOptionalTransactionAttributes(MethodVisitor mv) {
    if (!config.transactionType().isEmpty() && !config.isTransaction()) {
        mv.visitVarInsn(ALOAD, 0);// www.ja va 2  s . co  m
        mv.visitLdcInsn(config.transactionType());
        mv.visitLdcInsn(Priority.USER_CONFIG);
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/ThreadContext", "setTransactionType",
                "(Ljava/lang/String;I)V", true);
    }
    if (!config.transactionNameTemplate().isEmpty() && !config.isTransaction()) {
        addCodeForSetTransactionX(mv, "getTransactionNameTemplate", "setTransactionName");
    }
    if (!config.transactionUserTemplate().isEmpty()) {
        addCodeForSetTransactionX(mv, "getTransactionUserTemplate", "setTransactionUser");
    }
    int i = 0;
    for (String attrName : config.transactionAttributeTemplates().keySet()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(attrName);
        mv.visitVarInsn(ALOAD, 4);
        // methodMetaInternalName is non-null when transactionAttributeTemplates is
        // non-empty
        checkNotNull(methodMetaInternalName);
        mv.visitMethodInsn(INVOKEVIRTUAL, methodMetaInternalName, "getTransactionAttributeTemplate" + i++,
                "()Lorg/glowroot/agent/weaving/MessageTemplate;", false);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/GenericMessageSupplier", "create",
                "(Lorg/glowroot/agent/weaving/MessageTemplate;"
                        + "Ljava/lang/Object;Ljava/lang/String;[Ljava/lang/Object;)"
                        + "Lorg/glowroot/agent/weaving/GenericMessageSupplier;",
                false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/glowroot/agent/weaving/GenericMessageSupplier", "getMessageText",
                "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/ThreadContext",
                "addTransactionAttribute", "(Ljava/lang/String;Ljava/lang/String;)V", true);
    }
    Integer slowThresholdMillis = config.transactionSlowThresholdMillis();
    if (slowThresholdMillis != null) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(slowThresholdMillis.longValue());
        mv.visitFieldInsn(GETSTATIC, "java/util/concurrent/TimeUnit", "MILLISECONDS",
                "Ljava/util/concurrent/TimeUnit;");
        mv.visitLdcInsn(Priority.USER_CONFIG);
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/ThreadContext",
                "setTransactionSlowThreshold", "(JLjava/util/concurrent/TimeUnit;I)V", true);
    }
    if (config.transactionOuter()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/ThreadContext",
                "setTransactionOuter", "()V", true);
    }
}

From source file:org.glowroot.agent.weaving.AdviceGenerator.java

License:Apache License

private void addOnReturnMethod(ClassWriter cw) {
    boolean entryOrTimer = !config.traceEntryEnabledProperty().isEmpty();
    String travelerType = entryOrTimer ? "Ljava/lang/Object;" : "Lorg/glowroot/agent/plugin/api/TraceEntry;";
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "onReturn",
            "(Lorg/glowroot/agent/plugin/api/weaving/OptionalReturn;" + travelerType + ")V", null, null);
    mv.visitParameterAnnotation(0, "Lorg/glowroot/agent/plugin/api/weaving/BindOptionalReturn;", true)
            .visitEnd();/*from   w  w  w .  j av a2s .  c o m*/
    mv.visitParameterAnnotation(1, "Lorg/glowroot/agent/plugin/api/weaving/BindTraveler;", true).visitEnd();
    int travelerParamIndex = 1;
    visitAnnotation(mv, "Lorg/glowroot/agent/plugin/api/weaving/OnReturn;");
    mv.visitCode();
    if (!config.traceEntryEnabledProperty().isEmpty()) {
        mv.visitVarInsn(ALOAD, travelerParamIndex);
        // TraceEntryImpl implements both TraceEntry and Timer so cannot check instanceof Timer
        // to differentiate here (but can check isntanceof TraceEntry)
        mv.visitTypeInsn(INSTANCEOF, "org/glowroot/agent/plugin/api/TraceEntry");
        Label label = new Label();
        mv.visitJumpInsn(IFNE, label);
        mv.visitVarInsn(ALOAD, travelerParamIndex);
        mv.visitTypeInsn(CHECKCAST, "org/glowroot/agent/plugin/api/Timer");
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/Timer", "stop", "()V", true);
        mv.visitInsn(RETURN);
        mv.visitLabel(label);
    }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/weaving/OptionalReturn", "isVoid", "()Z",
            true);
    Label notVoidLabel = new Label();
    Label endIfLabel = new Label();
    mv.visitJumpInsn(IFEQ, notVoidLabel);
    mv.visitLdcInsn("void");
    mv.visitJumpInsn(GOTO, endIfLabel);
    mv.visitLabel(notVoidLabel);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/weaving/OptionalReturn", "getValue",
            "()Ljava/lang/Object;", true);
    mv.visitLabel(endIfLabel);
    mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/GenericMessageSupplier",
            "updateWithReturnValue", "(Lorg/glowroot/agent/plugin/api/TraceEntry;Ljava/lang/Object;)V", false);
    mv.visitVarInsn(ALOAD, travelerParamIndex);
    Integer stackTraceThresholdMillis = config.traceEntryStackThresholdMillis();
    if (stackTraceThresholdMillis == null) {
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/TraceEntry", "end", "()V", true);
    } else {
        mv.visitLdcInsn(stackTraceThresholdMillis.longValue());
        mv.visitFieldInsn(GETSTATIC, "java/util/concurrent/TimeUnit", "MILLISECONDS",
                "Ljava/util/concurrent/TimeUnit;");
        mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/TraceEntry", "endWithStackTrace",
                "(JLjava/util/concurrent/TimeUnit;)V", true);
    }
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.glowroot.agent.weaving.AdviceGenerator.java

License:Apache License

private void addCodeForSetTransactionX(MethodVisitor mv, String templateGetterName,
        String threadContextSetterName) {
    mv.visitVarInsn(ALOAD, 0);//from   w ww  .  ja  v a2  s . c  o m
    mv.visitVarInsn(ALOAD, 4);
    // methodMetaInternalName is non-null when transactionNameTemplate or
    // transactionUserTemplate are non-empty
    checkNotNull(methodMetaInternalName);
    mv.visitMethodInsn(INVOKEVIRTUAL, methodMetaInternalName, templateGetterName,
            "()Lorg/glowroot/agent/weaving/MessageTemplate;", false);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitVarInsn(ALOAD, 3);
    mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/GenericMessageSupplier", "create",
            "(Lorg/glowroot/agent/weaving/MessageTemplate;Ljava/lang/Object;"
                    + "Ljava/lang/String;[Ljava/lang/Object;)"
                    + "Lorg/glowroot/agent/weaving/GenericMessageSupplier;",
            false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "org/glowroot/agent/weaving/GenericMessageSupplier", "getMessageText",
            "()Ljava/lang/String;", false);
    mv.visitLdcInsn(Priority.USER_CONFIG);
    mv.visitMethodInsn(INVOKEINTERFACE, "org/glowroot/agent/plugin/api/ThreadContext", threadContextSetterName,
            "(Ljava/lang/String;I)V", true);
}

From source file:org.glowroot.agent.weaving.AdviceGenerator.java

License:Apache License

@RequiresNonNull("methodMetaInternalName")
private void generateMethodMetaConstructor(ClassWriter cw) {
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/lang/reflect/Method;)V", null, null);
    mv.visitCode();//from  w  ww.  j av  a 2  s.  co  m
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    mv.visitVarInsn(ALOAD, 0);
    if (config.isTraceEntryOrGreater()) {
        String messageTemplate = config.traceEntryMessageTemplate();
        if (messageTemplate.isEmpty() && config.isTransaction()) {
            messageTemplate = config.transactionNameTemplate();
        }
        if (messageTemplate.isEmpty()) {
            mv.visitLdcInsn("<no message template provided>");
        } else {
            mv.visitLdcInsn(messageTemplate);
        }
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/weaving/MessageTemplate;",
                false);
    } else {
        mv.visitInsn(ACONST_NULL);
    }
    mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "messageTemplate",
            "Lorg/glowroot/agent/weaving/MessageTemplate;");
    if (!config.transactionNameTemplate().isEmpty()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(config.transactionNameTemplate());
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/weaving/MessageTemplate;",
                false);
        mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "transactionNameTemplate",
                "Lorg/glowroot/agent/weaving/MessageTemplate;");
    }
    if (!config.transactionUserTemplate().isEmpty()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(config.transactionUserTemplate());
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/weaving/MessageTemplate;",
                false);
        mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "transactionUserTemplate",
                "Lorg/glowroot/agent/weaving/MessageTemplate;");
    }
    int i = 0;
    for (String attrTemplate : config.transactionAttributeTemplates().values()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(attrTemplate);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "org/glowroot/agent/weaving/MessageTemplate", "create",
                "(Ljava/lang/String;Ljava/lang/reflect/Method;)"
                        + "Lorg/glowroot/agent/weaving/MessageTemplate;",
                false);
        mv.visitFieldInsn(PUTFIELD, methodMetaInternalName, "transactionAttributeTemplate" + i++,
                "Lorg/glowroot/agent/weaving/MessageTemplate;");
    }
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.glowroot.agent.weaving.WeavingClassVisitor.java

License:Apache License

@RequiresNonNull({ "type", "metaHolderInternalName", "loader" })
private void generateMetaHolder() throws Exception {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS + ClassWriter.COMPUTE_FRAMES);
    cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, metaHolderInternalName, null, "java/lang/Object", null);
    Type metaHolderType = Type.getObjectType(metaHolderInternalName);
    MethodVisitor mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
    mv.visitCode();// www. ja  v  a  2 s .com
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitTryCatchBlock(l0, l1, l2, "java/lang/ClassNotFoundException");
    mv.visitLabel(l0);
    for (Type classMetaType : classMetaTypes) {
        String classMetaInternalName = classMetaType.getInternalName();
        String classMetaFieldName = "glowroot$class$meta$" + classMetaInternalName.replace('/', '$');
        FieldVisitor fv = cw.visitField(ACC_PUBLIC + ACC_FINAL + ACC_STATIC, classMetaFieldName,
                "L" + classMetaInternalName + ";", null, null);
        fv.visitEnd();
        mv.visitTypeInsn(NEW, classMetaInternalName);
        mv.visitInsn(DUP);
        loadType(mv, type, metaHolderType);
        mv.visitMethodInsn(INVOKESPECIAL, classMetaInternalName, "<init>", "(Ljava/lang/Class;)V", false);
        mv.visitFieldInsn(PUTSTATIC, metaHolderInternalName, classMetaFieldName,
                "L" + classMetaInternalName + ";");
    }
    for (MethodMetaGroup methodMetaGroup : methodMetaGroups) {
        for (Type methodMetaType : methodMetaGroup.methodMetaTypes()) {
            String methodMetaInternalName = methodMetaType.getInternalName();
            String methodMetaFieldName = "glowroot$method$meta$" + methodMetaGroup.uniqueNum() + '$'
                    + methodMetaInternalName.replace('/', '$');
            FieldVisitor fv = cw.visitField(ACC_PUBLIC + ACC_FINAL + ACC_STATIC, methodMetaFieldName,
                    "L" + methodMetaInternalName + ";", null, null);
            fv.visitEnd();
            mv.visitTypeInsn(NEW, methodMetaInternalName);
            mv.visitInsn(DUP);
            loadType(mv, type, metaHolderType);
            mv.visitLdcInsn(methodMetaGroup.methodName());
            mv.visitIntInsn(BIPUSH, methodMetaGroup.methodParameterTypes().size());
            mv.visitTypeInsn(ANEWARRAY, "java/lang/Class");
            for (int i = 0; i < methodMetaGroup.methodParameterTypes().size(); i++) {
                mv.visitInsn(DUP);
                mv.visitIntInsn(BIPUSH, i);
                loadType(mv, methodMetaGroup.methodParameterTypes().get(i), metaHolderType);
                mv.visitInsn(AASTORE);
            }
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredMethod",
                    "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;", false);
            mv.visitMethodInsn(INVOKESPECIAL, methodMetaInternalName, "<init>", "(Ljava/lang/reflect/Method;)V",
                    false);
            mv.visitFieldInsn(PUTSTATIC, metaHolderInternalName, methodMetaFieldName,
                    "L" + methodMetaInternalName + ";");
        }
    }
    // this is just try/catch ClassNotFoundException/re-throw AssertionError
    mv.visitLabel(l1);
    Label l3 = new Label();
    mv.visitJumpInsn(GOTO, l3);
    mv.visitLabel(l2);
    mv.visitFrame(F_SAME1, 0, null, 1, new Object[] { "java/lang/ClassNotFoundException" });
    mv.visitVarInsn(ASTORE, 0);
    mv.visitTypeInsn(NEW, "java/lang/AssertionError");
    mv.visitInsn(DUP);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/AssertionError", "<init>", "(Ljava/lang/Object;)V", false);
    mv.visitInsn(ATHROW);
    mv.visitLabel(l3);
    mv.visitFrame(F_SAME, 0, null, 0, null);

    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    cw.visitEnd();
    byte[] bytes = cw.toByteArray();
    ClassLoaders.defineClass(ClassNames.fromInternalName(metaHolderInternalName), bytes, loader);
}

From source file:org.glowroot.agent.weaving.WeavingClassVisitor.java

License:Apache License

private static void loadObjectType(MethodVisitor mv, Type type, Type ownerType) {
    // may not have access to type in meta holder, so need to use Class.forName()
    // instead of class constant
    mv.visitLdcInsn(type.getClassName());
    mv.visitInsn(ICONST_0);//  ww  w  .  j a v a 2 s.  co  m
    mv.visitLdcInsn(ownerType);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getClassLoader", "()Ljava/lang/ClassLoader;", false);
    mv.visitMethodInsn(INVOKESTATIC, "java/lang/Class", "forName",
            "(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;", false);
}

From source file:org.graalvm.compiler.core.test.SubWordArrayStoreTest.java

License:Open Source License

@Override
protected byte[] generateClass(String internalClassName) {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cw.visit(52, ACC_SUPER | ACC_PUBLIC, internalClassName, null, "java/lang/Object", null);

    final String fieldName = "array";
    final String fieldDescriptor = "[" + kind.getTypeChar();

    FieldVisitor field = cw.visitField(ACC_PUBLIC | ACC_STATIC, fieldName, fieldDescriptor, null, null);
    field.visitEnd();/* w  w  w  . j  a  v  a  2  s  .  c o m*/

    MethodVisitor clinit = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
    clinit.visitCode();
    clinit.visitIntInsn(BIPUSH, 16);
    clinit.visitIntInsn(NEWARRAY, toASMType(kind));
    clinit.visitFieldInsn(PUTSTATIC, internalClassName, fieldName, fieldDescriptor);
    clinit.visitInsn(RETURN);
    clinit.visitMaxs(1, 0);
    clinit.visitEnd();

    MethodVisitor snippet = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, SNIPPET, "()Z", null, null);
    snippet.visitCode();

    if (unsafeStore) {
        SubWordTestUtil.getUnsafe(snippet);
        snippet.visitFieldInsn(GETSTATIC, internalClassName, fieldName, fieldDescriptor);
        snippet.visitLdcInsn(arrayBaseOffset(kind));
        snippet.visitLdcInsn(value);
        snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                "put" + SubWordTestUtil.getUnsafePutMethodName(kind),
                "(Ljava/lang/Object;J" + kind.getTypeChar() + ")V", false);
    } else {
        snippet.visitFieldInsn(GETSTATIC, internalClassName, fieldName, fieldDescriptor);
        snippet.visitInsn(ICONST_0);
        snippet.visitLdcInsn(value);
        snippet.visitInsn(toArrayStoreOpcode(kind));
    }

    if (unsafeLoad) {
        SubWordTestUtil.getUnsafe(snippet);
        snippet.visitFieldInsn(GETSTATIC, internalClassName, fieldName, fieldDescriptor);
        snippet.visitLdcInsn(arrayBaseOffset(kind));
        snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                "get" + SubWordTestUtil.getUnsafePutMethodName(kind),
                "(Ljava/lang/Object;J)" + kind.getTypeChar(), false);
    } else {
        snippet.visitFieldInsn(GETSTATIC, internalClassName, fieldName, fieldDescriptor);
        snippet.visitInsn(ICONST_0);
        snippet.visitInsn(toArrayLoadOpcode(kind));
    }

    snippet.visitLdcInsn(value);
    SubWordTestUtil.convertToKind(snippet, kind);
    SubWordTestUtil.testEqual(snippet);

    snippet.visitMaxs(5, 0);
    snippet.visitEnd();

    cw.visitEnd();
    return cw.toByteArray();
}

From source file:org.graalvm.compiler.core.test.SubWordFieldStoreTest.java

License:Open Source License

@Override
protected byte[] generateClass(String internalClassName) {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cw.visit(52, ACC_SUPER | ACC_PUBLIC, internalClassName, null, "java/lang/Object", null);

    final String fieldName = "field";
    final String fieldDescriptor = Character.toString(kind.getTypeChar());

    FieldVisitor field = cw.visitField(ACC_PUBLIC | ACC_STATIC, fieldName, fieldDescriptor, null, value);
    field.visitEnd();/*from w ww  .  ja va2  s . c o m*/

    MethodVisitor snippet = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, SNIPPET, "()Z", null,
            new String[] { "java/lang/NoSuchFieldException" });
    snippet.visitCode();

    if (unsafeStore) {
        snippet.visitLdcInsn(Type.getObjectType(internalClassName));
        snippet.visitLdcInsn(fieldName);
        snippet.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getField",
                "(Ljava/lang/String;)Ljava/lang/reflect/Field;", false);
        snippet.visitVarInsn(ASTORE, 0);

        SubWordTestUtil.getUnsafe(snippet);
        snippet.visitVarInsn(ALOAD, 0);
        snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "staticFieldBase",
                "(Ljava/lang/reflect/Field;)Ljava/lang/Object;", false);
        snippet.visitVarInsn(ASTORE, 1);

        SubWordTestUtil.getUnsafe(snippet);
        snippet.visitVarInsn(ALOAD, 0);
        snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "staticFieldOffset",
                "(Ljava/lang/reflect/Field;)J", false);
        snippet.visitVarInsn(LSTORE, 2);

        SubWordTestUtil.getUnsafe(snippet);
        snippet.visitVarInsn(ALOAD, 1);
        snippet.visitVarInsn(LLOAD, 2);
        snippet.visitLdcInsn(value);
        snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                "put" + SubWordTestUtil.getUnsafePutMethodName(kind),
                "(Ljava/lang/Object;J" + kind.getTypeChar() + ")V", false);
    } else {
        snippet.visitLdcInsn(value);
        snippet.visitFieldInsn(PUTSTATIC, internalClassName, fieldName, fieldDescriptor);
    }

    if (unsafeLoad) {
        if (!unsafeStore) {
            snippet.visitLdcInsn(Type.getObjectType(internalClassName));
            snippet.visitLdcInsn(fieldName);
            snippet.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getField",
                    "(Ljava/lang/String;)Ljava/lang/reflect/Field;", false);
            snippet.visitVarInsn(ASTORE, 0);

            SubWordTestUtil.getUnsafe(snippet);
            snippet.visitVarInsn(ALOAD, 0);
            snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "staticFieldBase",
                    "(Ljava/lang/reflect/Field;)Ljava/lang/Object;", false);
            snippet.visitVarInsn(ASTORE, 1);

            SubWordTestUtil.getUnsafe(snippet);
            snippet.visitVarInsn(ALOAD, 0);
            snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "staticFieldOffset",
                    "(Ljava/lang/reflect/Field;)J", false);
            snippet.visitVarInsn(LSTORE, 2);
        }
        SubWordTestUtil.getUnsafe(snippet);
        snippet.visitVarInsn(ALOAD, 1);
        snippet.visitVarInsn(LLOAD, 2);
        snippet.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                "get" + SubWordTestUtil.getUnsafePutMethodName(kind),
                "(Ljava/lang/Object;J)" + kind.getTypeChar(), false);
    } else {
        snippet.visitFieldInsn(GETSTATIC, internalClassName, fieldName, fieldDescriptor);
    }

    snippet.visitLdcInsn(value);
    SubWordTestUtil.convertToKind(snippet, kind);
    SubWordTestUtil.testEqual(snippet);

    snippet.visitMaxs(5, 4);
    snippet.visitEnd();

    cw.visitEnd();
    return cw.toByteArray();
}