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Handy Object Registration Macro
Submitted by |
This is a simple little macro that can be used to perform some type of
one-time, start-up operation. I usually use it to register some object
with some singleton-based server object. For instance, I used this
macro to register several resource objects with a general purpose
resource parser. In order to make this macro more useful, you'd gonna
have to tweak it to make the constructor/destructor do whatever
application specific code you need to do. All static objects are
guarented to be created before you get to a main/WinMain, but the order
of object creation isn't. So you're gonna have to be careful what you
make this macro do. In the case of the resource parser, I did a lazy
creation of the singleton object, i.e. create it when you try to access
it.
#define REGISTER_OBJECT(x) \
class x##_Register \
{ \
public: \
x##_Register() \
{ \
ResourceParser::Register(x##::GetTag(), x##::CreateInstance); \
} \
\
~x##_Register() \
{ \
ResourceParser::Unregister(x##::GetTag()); \
} \
\
static x##_Register object; \
}; \
\
x##_Register x##_Register::object; |
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