Hi all,
I'm interested in objective analysis of which is more performant; calling instance methods of a singleton class or methods of a static class. I've already seen this so I'm not looking for a discussion about the difference between the two or a discussion of which is "better." I'm only interested in relative performance between the two. Thanks in advance.
-Mike
In previous tests that I've done, I've found that calling static methods is faster than calling instance methods, and fractionally more memory efficient.... but the singleton shouldn't be dismissed purely for those reasons.
Unless you're calling them in a tight loop (meaning no other significant code, where the overhead of the call is significant) thousands or hundreds of thousands of times, don't worry about it. The difference is likely going to be under a microsecond, so it's not worth fretting over. Simply make the best architectural choice...
Premature optimization is the root of all evil...
Before you can call the instance method of a singleton pattern object, you need to get the instance first, which requires a static method call:
SomeClass::getInstance()->myMethod();
// versus
SomeClass::myMethod();
So the first time you need access to that object in a function, you need to make a static method call first. Because function calls are never free, you are probably better off making the method static.
