/* 
   adapted from bbum
   http://www.friday.com/bbum/2008/01/26/objective-c-printing-class-name-from-dtrace/
*/

#pragma D option quiet

pid$target::*MyClass*:entry /* change MyClass into your class name */
{
    isaptr = *(uint32_t*)copyin(arg0, 4);
    classnameptr = *(uint32_t*)copyin(isaptr+8, 4);
    classname = copyinstr(classnameptr);
    
    @selCounter[classname, copyinstr(arg1)] = count();
}

END
{
        printa(@selCounter);
}