I'm looking at developing a networking framework somewhat styled after
what Mina offers in Java.. but native and optionally scriptable
through wrappers.
I've been looking at doing it in C, but there seems to be so much
extra overhead while implementing data hiding, custom memory
management, and some basic inheritance.
I've recently done some work in C++ and got the taste of the
compacting of certain management tasks into small type-safe pieces of
code.....
I'm hoping that when my library is in good shape that other
open-source developers can consume it, however I've often seen that
C++ is viewed as "evil" and avoided in any projects. Since I plan on
using libev and/or libevent pieces, I figured that the project may be
of the most use to subscribers of this list.... I figured I'd poll you
all....
Basically the plan is to develop objects in this fashion:
* C Interface w/ either publicly exposed structs, or typedefs for
structs not-yet-defines. + usage functions
* C++ Implementation Interface inheriting/implementing from structs in
C interface
* C function implementation calling the C++ implementation interface functions
* C++ Implementation - actual guts
Example:
IoAccepter.h:
struct IoAccepter {
IoManager *manager;
IoHandler *handler;
};
IoAccepter *IoAccepter_new(IoManager *manager, IoHandler *handler);
int IoAccepter_bind(IoAccepter *accepter, const struct sockaddr *addr,
socklen_t addr_len);
IoAccepter.hpp:
class IoAccepter_impl : public IoAccepter {
public:
IoAccepter(IoManager *manager, IoHandler *handler);
int bind(const struct sockaddr *addr, socklen_t addr_len);
private:
/* already-bound sockets -> addresses ... */
}
/* binding layer */
extern "C" {
IoAccepter *IoAccepter_new(IoManager *manager, IoHandler *handler) {
return new IoAccepter_impl(manager, handler);
}
int IoAccepter_bind(IoAccepter *accepter, const struct sockaddr *addr,
socklen_t addr_len) {
return ((IoAccepter_impl*)accepter)->bind(addr, addr_len);
}
IoAccepter.cpp ..... deeper impl
Any views on this... perhaps there's a better solution I hadn't
thought of. (I've seen glib and its large set of utilities for
object-orientation in C... but it seems just too large and clunky....)
--
Thomas Harning Jr.
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