Automatically decorate every method in a class

I would like to add some logic before and after every time I'm using a method (doesn't really matter if is private, protected or public) in a class.

For example:

class Service 
{
    function test1() {
        Log:start(__METHOD__);
        someLogicInThere(); ....
        Log:end(__METHOD__);
    }

    function test2() {
        Log:start(__METHOD__);
        someLogicInThere(); ....
        Log:end(__METHOD__);
    }
    ...
}

My idea is to finally have something like this:

/**
 * @LogDecorate
 */
class Service
{
    function test1() {
        someLogicInThere();
    }

    function test2() {
        someLogicInThere();
    }
    ...
}

Use annotations is not important. There is any way to do that?