Is it possible to create a conditional zone?

[diverru]

Is it possible to start some zone in one function and end in another, but end only when some condition met?

I know, that there is C Api, allowing to start zone in one function and end in another, but i need to take into account only zones that met condtions. For example

  void Foo() {  StartZone("xxx"); ... } 
  void Bar() {
     ...
     if (some_condition) {
         EndZone("xxx");
     } 

If some_condition that zone should be ignored completely