3 Sep
2011
3 Sep
'11
11:25 p.m.
On Fri, Sep 02, 2011 at 07:50:17AM -0400, Paul Davis wrote:
i'm pretty confused by what you've written
here. i use functors which
have copy semantics, and the "event" classes that contain a functor do
not contain a pointer to a functor, but a functor that is copied. this
is the base class:
struct BaseRequestObject {
RequestType type;
bool valid;
InvalidationRecord* invalidation;
boost::function<void()> the_slot;
BaseRequestObject() : valid (true), invalidation (0) {}
};
the "type" member is still there, but differentiates between requests
that require use of the functor ("the_slot") and those that are just
an enum that can be handled with no data (e.g. telling an event
loop/thread to quit).
Mmm. Did you ever look at what's going on behind the scenes
(/usr/include/boost/function/function/function_base.hpp) ?
Calling a void function(void) is a basic language operation,
supported directly by most CPU instruction sets and normally
translating into just a few CPU instrunctions. If doing this
requires > 900 lines of code (plus all the files included from
the one referred to) I'd say there is something fundamentally
wrong. Even emulating a function call on a different CPU or
a virtual one doesn't take anything like that.
Ciao,
--
FA