ttl2-compatible/src/main/java/com/alibaba/ttl/threadpool/agent/transformlet/helper/AbstractExecutorTtlTransformlet.java [146:177]:
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    private boolean updateBeforeAndAfterExecuteMethodOfExecutorSubclass(@NonNull final CtClass clazz) throws NotFoundException, CannotCompileException {
        final CtClass runnableClass = clazz.getClassPool().get(RUNNABLE_CLASS_NAME);
        final CtClass threadClass = clazz.getClassPool().get("java.lang.Thread");
        final CtClass throwableClass = clazz.getClassPool().get("java.lang.Throwable");
        boolean modified = false;

        try {
            final CtMethod beforeExecute = clazz.getDeclaredMethod("beforeExecute", new CtClass[]{threadClass, runnableClass});
            // unwrap runnable if IsAutoWrapper
            String code = "$2 = com.alibaba.ttl.spi.TtlAttachmentsDelegate.unwrapIfIsAutoWrapper($2);";
            logger.info("insert code before method " + signatureOfMethod(beforeExecute) + " of class " +
                    beforeExecute.getDeclaringClass().getName() + ": " + code);
            beforeExecute.insertBefore(code);
            modified = true;
        } catch (NotFoundException e) {
            // clazz does not override beforeExecute method, do nothing.
        }

        try {
            final CtMethod afterExecute = clazz.getDeclaredMethod("afterExecute", new CtClass[]{runnableClass, throwableClass});
            // unwrap runnable if IsAutoWrapper
            String code = "$1 = com.alibaba.ttl.spi.TtlAttachmentsDelegate.unwrapIfIsAutoWrapper($1);";
            logger.info("insert code before method " + signatureOfMethod(afterExecute) + " of class " +
                    afterExecute.getDeclaringClass().getName() + ": " + code);
            afterExecute.insertBefore(code);
            modified = true;
        } catch (NotFoundException e) {
            // clazz does not override afterExecute method, do nothing.
        }

        return modified;
    }
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ttl-agent/src/main/java/com/alibaba/ttl3/agent/transformlet/helper/AbstractExecutorTtlTransformlet.java [146:177]:
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    private boolean updateBeforeAndAfterExecuteMethodOfExecutorSubclass(@NonNull final CtClass clazz) throws NotFoundException, CannotCompileException {
        final CtClass runnableClass = clazz.getClassPool().get(RUNNABLE_CLASS_NAME);
        final CtClass threadClass = clazz.getClassPool().get("java.lang.Thread");
        final CtClass throwableClass = clazz.getClassPool().get("java.lang.Throwable");
        boolean modified = false;

        try {
            final CtMethod beforeExecute = clazz.getDeclaredMethod("beforeExecute", new CtClass[]{threadClass, runnableClass});
            // unwrap runnable if IsAutoWrapper
            String code = "$2 = com.alibaba.ttl3.spi.TtlAttachmentsDelegate.unwrapIfIsAutoWrapper($2);";
            logger.info("insert code before method " + signatureOfMethod(beforeExecute) + " of class " +
                    beforeExecute.getDeclaringClass().getName() + ": " + code);
            beforeExecute.insertBefore(code);
            modified = true;
        } catch (NotFoundException e) {
            // clazz does not override beforeExecute method, do nothing.
        }

        try {
            final CtMethod afterExecute = clazz.getDeclaredMethod("afterExecute", new CtClass[]{runnableClass, throwableClass});
            // unwrap runnable if IsAutoWrapper
            String code = "$1 = com.alibaba.ttl3.spi.TtlAttachmentsDelegate.unwrapIfIsAutoWrapper($1);";
            logger.info("insert code before method " + signatureOfMethod(afterExecute) + " of class " +
                    afterExecute.getDeclaringClass().getName() + ": " + code);
            afterExecute.insertBefore(code);
            modified = true;
        } catch (NotFoundException e) {
            // clazz does not override afterExecute method, do nothing.
        }

        return modified;
    }
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