So now I need to clean up the dynamic link stuff.
1. get rid of setup
=============
Now, when you initialise a library, first the C++ constructor is called:
thread_frame = lib->thread_frame_creator( gcp);
and then the "body" of the constructor:
start_proc = lib->start_sym(thread_frame, argc, argv, stdin_,stdout_,stderr_);
The start_sym function is created by the compiler using a macro:
#define FLX_START_WRAPPER(mname,name,x)\
extern "C" FLX_EXPORT ::flx::rtl::con_t *name##_flx_start(\
mname::thread_frame_t *__ptf,\
int argc,\
char **argv,\
FILE *stdin_,\
FILE *stdout_,\
FILE *stderr_\
) {\
__ptf->argc = argc;\
__ptf->argv = argv;\
__ptf->flx_stdin = stdin_;\
__ptf->flx_stdout = stdout_;\
__ptf->flx_stderr = stderr_;\
return (new(*__ptf->gcp,mname::x##_ptr_map,false) \
mname::x(__ptf)) ->call(0);\
}
The definition is generated by:
"struct thread_frame_t {";
" int argc;";
" char **argv;";
" FILE *flx_stdin;";
" FILE *flx_stdout;";
" FILE *flx_stderr;";
" ::flx::gc::generic::gc_profile_t *gcp;";
" ::flx::gc::generic::gc_shape_t const * const shape_list_head;";
...
In other words, we pass in the argument array and file channels 0,1,2
to the creator which stores these values in the thread frame before executing
the rest of the init routine (which is typically your program).
NOW: at the moment, plugins ALSO follow that with a setup function that accepts
a string and returns an int. The idea was to parse it, so the string is a
"dynamically
typed initialisation spec".
But why not get rid of setup, and just pass data using the argv/argc mechanism?
There's no particular reason a plugin should see the process argv/argc.
2. The naming of stuff is inconsistent. The init routine is called
moduename_flx_start
but the variable used to store it is called start_sym. But it actually invokes
the program
_init_() procedure ..
--
john skaller
skal...@users.sourceforge.net
http://felix-lang.org
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