Multiple Query Threads and sqlbreakcallback()

Hello. I have this question: If I have multiple threads querying an Informix database and each thread makes the same sqlbreakcallback() call sqlbreakcallback( 2000, callbackfunc_ptr ); setting the same callback function and, in the process of the callback function being called I cancel, will the proper query be canceled and will the other queries continue? In other words, do I have to define a specific callback function for each query thread, or, can they all share the same callback function code? TIA