Defines a function on request and then remembers the handle.
Can be used to avoid the overhead of defining the function several times in
Constructor & Destructor Documentation
VT_FuncDef (const char *symname, const char *classname)
Member Function Documentation
Stores the function handle, 0 if not defined yet.
Checks whether the function is already defined or not.
Returns handle as soon as it is available, otherwise 0. Defining the function may be impossible for example, because Intel® Trace Collector was not initialized or ran out of memory.